JPH11215075A - Parallel broadcasting system and broadcasting system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To endure both a failure in a certain channel or a certain time zone, suppress waste of a band, and suppress power consumption of a receiving terminal device as much as possible. SOLUTION: A broadcasting station, in a set of a row or a column constituted by a data page generated by blocking two-dimensional data and parity data of the data page, a channel to be broadcast by each page constituting each set and an order of a channel. Are arranged so that they do not appear in the same row and column on the two-dimensional array, and broadcast in parallel while synchronizing each page for each channel. The receiving terminal device acquires a target page of the designated row (column) while switching the receiving frequency. If any one of the data pages cannot be normally received, the data is restored based on the other successfully received pages in the same set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcasting system, and more particularly, to a data broadcasting schedule system and a receiving terminal device for broadcasting digital data from a broadcasting station using a plurality of frequencies, and for ensuring that a receiving terminal device takes in only necessary data. The present invention relates to a broadcast schedule method capable of reducing power consumption on a terminal device side.

[0002]

2. Description of the Related Art With the recent development of mobile communication, an era has come in which a user can carry around a portable information terminal device (mobile terminal) and carry out communication from anywhere. It is considered that such communication from outside the office is basically premised on being able to be realized wirelessly, but this wireless communication is suitable for receiving the same information by a plurality of information terminals at the same time. ing. However, on the other hand, there is a disadvantage that the error probability of the signal is higher than that of the wired communication.
For this reason, in order to improve the reliability of wireless communication, especially in the case of broadcasting, it is possible to reduce the bandwidth and simplify the unilateral broadcasting, which is an advantage of the broadcasting type with securing an uplink communication path to the transmitting station. It defeats the purpose. Further, retransmission of a part of a large number of receiving stations only for a failed station may reduce the efficiency of the entire broadcast and may cause the schedule to be out of order. For this reason, in data broadcasting, a transmitting station repeatedly broadcasts the same type of information, and a terminal that has failed to correctly receive broadcast content generally waits until re-broadcasting to obtain target information.

As an example of the above-mentioned method, for example,
FIG. 12 shows a relationship between each frame and a slot in order to explain a digital cordless telephone transmission system disclosed in Japanese Patent Publication No. 207107 (hereinafter, referred to as “conventional example 1”). The operation of Conventional Example 1 will be described with reference to FIG.

[0004] The transmitting side uses A, B,
, And the same data is transmitted from another slot with a time difference. According to FIG. 12, the first data is transmitted in the first slot, and the same data is transmitted in the second slot with the same data delayed by two frames. Thereby, when the data of the first slot cannot be received, the data of the second slot is read.
In this way, by doubling the transmission data and transmitting the data at a delayed time, the reliability of the transmission data can be improved, and in particular, the probability of occurrence of a failure due to time can be reduced.

FIG. 13 shows the Proceedings of IEEE RT.
AS96: The Real Time Technology and Application Sym
posium Boston MA June 1996 `` AIDA-based
FIG. 4 is a conceptual diagram showing a data broadcasting method of “Real-Time Fault-Tolerant Broadcast Disks” (hereinafter, referred to as “conventional example 2”).

[0006] Broadcast data is composed of m blocks as shown in FIG. The transmitting side multiplies this by a matrix of N rows and m columns (N> m) and spreads it into N blocks. Then, the N blocks are broadcast. On the receiving side, the original m blocks are restored by multiplying by an undo matrix of m rows and N columns. As a result, even if (N−m) or less block failures occur, the original m blocks can be restored, so that a plurality of failures can be tolerated and the redundancy can be flexibly constructed.

[0007]

However, in the above-mentioned conventional example 1, even if the reliability of transmission data can be improved, and in particular, the probability of occurrence of a failure due to time can be reduced, time division is performed in the same band. Since data is transmitted, it is not possible to cope with a long-term burst error.

[0008] Further, in the system in which the transmission data is simply continuously transmitted in each slot as in the conventional example 1, the data transmitted first and the delayed data are not received simultaneously. As long as there is a delay in receiving the data, there is a problem that the data cannot be returned to the originally transmitted data.

Further, the above-mentioned prior art example 2 has an advantage that it is possible to construct a system that is resistant to obstacles and highly flexible, but the computational load required to obtain such an advantage is enormous. . The channel used is 1
Since there is only one type, there is a problem that it is not possible to cope with a failure in the channel. Even if the same data is broadcast in parallel on a plurality of channels, the bandwidth is wasted and a failure common to all channels cannot be dealt with.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and is durable to both a channel-specific fault and a fault that occurs in common to all channels at a certain time, and reduces the waste of bandwidth. It is an object of the present invention to provide a parallel broadcasting system that can be made as small as possible.

It is another object of the present invention to provide a broadcast system and a parallel broadcast system that minimize power consumption by reducing unnecessary reception of data other than target data as much as possible for a receiving terminal device.

[0012]

In order to achieve the above object, a parallel broadcasting system according to a first aspect of the present invention comprises a broadcasting station for broadcasting data in parallel on a plurality of channels, and a broadcasting station for broadcasting data. A receiving terminal device capable of receiving data from a plurality of channels for receiving data to be transmitted, and broadcasting data including a unit of correction and redundancy information for enabling data correction while sequentially switching channels. / Reception.

[0013] A parallel broadcasting system according to a second aspect of the present invention is a broadcast station that broadcasts a data page generated by dividing data to be broadcast into a plurality of blocks from a plurality of channels in parallel, and a broadcast station that broadcasts the data page. In the parallel broadcasting system having a receiving terminal device capable of receiving data of the channel, the broadcast station specifies a predetermined number of data pages to be broadcast from the data pages to be broadcast, and specifies each of the specified data pages. Broadcast schedule control means for generating a redundant page capable of correcting a data page and generating a set together with the specified data page, and the broadcast on a two-dimensional array composed of broadcast channels and broadcast orders. A set of a data page and a redundant page generated by the schedule control means is displayed in the same channel and the same broadcast order for each page. A page sequence means arranged to odd, and has a data broadcast control unit for broadcasting in parallel a two-dimensional array of data by the page arrangement means.

[0014] In a parallel broadcasting system according to a third invention, in the second invention, in the second invention, the broadcasting station is configured so that the data page is included in a set of a data page and a redundancy page generated by the broadcasting schedule control means. This is for broadcasting data arranged in descending order of the probability of being received by the receiving terminal device.

According to a fourth aspect of the present invention, in the parallel broadcast system according to the second aspect, the broadcast schedule control means includes:
The set is generated by specifying a data page to be broadcast so that the broadcast frequency of the data page having a high probability of being received by the receiving terminal device is high, and the page arrangement means,
In the set of the data page and the redundant page generated by the broadcast schedule control means, the data pages having a high broadcast frequency are rearranged to the rear of the data page arrangement, and
They are arranged on a dimensional array.

A parallel broadcast system according to a fifth aspect of the present invention is generated by dividing data to be broadcast into a plurality of blocks on the same channel and the same broadcast order on a two-dimensional array composed of broadcast channels and broadcast orders. A broadcasting station that broadcasts in parallel from a plurality of channels broadcast data arranged such that each page in a set composed of a data page and a redundant page that enables correction of the data page is not displayed, A receiving terminal device for receiving broadcast data broadcasted by the broadcasting station, wherein the receiving terminal device receives only pages in the set by switching a receiving frequency from broadcast data broadcasted by the broadcasting station. It has a data reception processing means to perform the processing.

According to a sixth aspect of the present invention, in the parallel broadcasting system according to the fifth aspect, the data reception processing means includes a step of: When it is desired to receive only a specific data page from the group, the data page is received from the head in the group including the specific data page, and the data reception is stopped when the specific data page can be normally received. .

[0018] In a parallel broadcasting system according to a seventh invention, in the sixth invention, the data reception processing means receives all the pages in the set when the specific data page cannot be normally received, This restores the specific data page that could not be received based on other pages in the set.

[0019] In a parallel broadcasting system according to an eighth invention, in the fifth invention, in the fifth invention, the data reception processing means is arranged so that the broadcasting station arranges a data page having a high broadcast frequency in the group after the arrangement of the data pages. If the broadcast data is broadcast in parallel and only the specific data page is desired to be received from the broadcast data, only the data pages arranged rearward in the group within the group including the specific data page To receive.

A broadcast system according to a ninth aspect of the present invention provides a broadcast station that broadcasts a data page generated by dividing data to be broadcast into a plurality of blocks, and a receiving terminal device that receives data broadcast by the broadcast station. In the broadcast system having a broadcast station, the broadcast station specifies a predetermined number of data pages to be broadcast from the data pages to be broadcast, and generates a redundant page that enables correction of the specified data pages. Broadcast schedule control means for generating a set together with the specified data page, and data broadcast control means for broadcasting data that is a set of the data page and the redundant page generated by the broadcast schedule control means, Broadcasting data arranged in a set in descending order of the probability that the data page is received by the receiving terminal device in a set A.

[0021] A broadcast system according to a tenth aspect of the present invention is a broadcast system, comprising: a data page generated by dividing data to be broadcast into a plurality of blocks; and a redundant page capable of correcting the data page. A broadcast station that broadcasts after arranging the data pages in the order of high probability of being received, and a receiving terminal device that receives broadcast data broadcast by the broadcast station, wherein the receiving terminal device has a specific data page A data reception processing means for stopping data reception when the specific data page can be normally received in the set including the specific data page in the transmitted broadcast data when only receiving the specific data page It is.

[0022] The broadcast system according to the eleventh invention is characterized in that
0, the data reception processing means receives all the pages in the set when the specific data page cannot be normally received, and specifies the specific data page which could not be received based on other pages in the set. The data page is restored.

[0023] A broadcast system according to a twelfth aspect of the present invention is a broadcast system for broadcasting a data page generated by dividing broadcast data into a plurality of blocks, and a receiving terminal device for receiving data broadcast by the broadcast station. In the broadcast system having a broadcast station, the broadcast station, from among the data pages to be broadcast, a predetermined number of data pages to be broadcast such that the broadcast frequency of the data pages having a high probability of being received by the receiving terminal device becomes high. A broadcast schedule control means for generating a redundant page enabling identification and correction of each of the identified data pages and generating a set together with the identified data page; Page that arranges frequently broadcast data pages behind the data page list A column unit, and has a data broadcast control unit for broadcasting the sequence data by the page arrangement means.

A broadcast system according to a thirteenth aspect of the present invention provides a broadcast system in which a data page generated by dividing data to be broadcast into a plurality of blocks and a redundant page enabling correction of the data page are included. A broadcast station that broadcasts after arranging a data page with a high broadcast frequency after the arrangement of the data pages, and a receiving terminal device that receives broadcast data broadcast by the broadcast station, wherein the receiving terminal device has a specific When it is desired to receive only the data page, only the data page arranged rearward in the set including the specific data page in the transmitted broadcast data is received.

The parallel broadcast system according to the fourteenth invention is
A broadcast station that broadcasts the same data in parallel with a time difference by delaying the data broadcast from the regular channel and separately broadcasting from the backup channel, and receives the data broadcast by the broadcast station from the regular channel or the backup channel. In the parallel broadcasting system having the receiving terminal device, the broadcasting station broadcasts the broadcast data by periodically inserting non-broadcast time between a series of data.

A parallel broadcasting system according to a fifteenth aspect of the present invention comprises:
A broadcasting station that broadcasts the same data in parallel with a time difference by delaying the data broadcast from the regular channel and broadcasting separately from the backup channel, and a receiving channel when a failure occurs when receiving data from the regular channel. In a parallel broadcasting system having a receiving terminal device that continuously performs broadcast reception by switching to a backup channel, the receiving terminal device is periodically inserted when receiving broadcasted data from the backup channel. The reception channel is returned to the regular channel when the non-broadcasting time is reached.

[0027]

Preferred embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 is a schematic configuration diagram showing an embodiment of a broadcasting system according to the present invention. This system includes a broadcasting station 1 that broadcasts data in parallel and a receiving terminal device 2 that receives broadcast data emitted by the broadcasting station 1. In FIG. 1, one receiving terminal device 2
Only one of them is shown as a representative. In the description of the present embodiment, components that are not particularly relevant, such as a display and an input device, will be omitted.

The broadcasting station 1 has a database server 3, a distribution data distribution device 4, and a plurality of radio broadcasting devices 5. The database server 3 stores data to be broadcast in a two-dimensional database. The stored data is data links from external systems,
Alternatively, the information is inputted and updated directly or irregularly directly from an input device attached to the database server 3. The distribution data distribution device 4 distributes the data to be broadcast extracted from the database server 3 to the respective radio broadcasting devices 5. For this purpose, the distribution data distribution device 4 specifies a predetermined number of data pages to be broadcast from the database server 3,
As a broadcast schedule control means for generating a redundant page capable of correcting each of the specified data pages and generating a set together with the specified data pages, and a two-dimensional system comprising a broadcasting channel and a broadcasting order. On the array, a data page included in a set serving as a data correction unit and a redundant page of the data page are provided as page arranging means for arranging the respective pages so that the respective pages do not appear in the same channel and the same broadcast order. I have. Details regarding the page will be described later. Further, the distribution data distribution device 4 is provided as a data broadcast control unit that broadcasts the two-dimensionally arranged data in parallel through the wireless broadcast device 5. Each wireless broadcasting device 5 includes a distribution data distribution device 4
Are broadcast on different frequencies that are less likely to interfere with each other. The broadcast station 1 transmits the broadcast data (two-dimensional database) in a plurality of channels in parallel with the above configuration.

On the other hand, the receiving terminal device 2 is provided with a frequency switching device 6 for switching the receiving frequency and a data processing device 7 for performing switching control of the frequency switching device 6, data restoration processing, and the like as data reception processing means. When the broadcast station 1 receives the data broadcasted, the reception frequency is switched to receive only the desired, that is, the page of the desired two-dimensional database row or column of the two-dimensional database.

FIG. 2 is a diagram showing the structure of data broadcast in the present embodiment. The broadcast data is
It has a two-dimensional structure, and information belonging to each category is put together in rows and columns. In the present embodiment, data to be broadcast is divided into blocks of the same size. In the present embodiment, this data block (block) is called a page. That is, a page is a unit of one information. Data transmitted at a certain time has a relational database structure, and has p rows ×
It is composed of q columns of pages. In FIG. 2, p = q
= 4, and what is represented by A1, B1, etc. corresponds to a page. In the present embodiment, a page based on effective data stored in a database is particularly called a data page. In the present embodiment, the data to be broadcasted is stored in the database server 3 in a state where the data is divided into data pages. Needless to say, since it is sufficient that pages are formed before being broadcast from the wireless broadcasting device 5, the distribution data distribution device 4 may sequentially generate data pages.

FIG. 3 is a diagram showing an array of channels and ranks for broadcasting the data shown in FIG. The present embodiment is characterized in that the data is arranged so that the same row and the same column of the data broadcast in the same order as each channel do not appear. This arrangement method will be described below.

First, the data of the first row of a certain row in FIG. 2 is arranged at the head of the row and column, and both the row and column are sequentially shifted by one. Finally, a page of parity data is arranged as a redundant page of the row. This is called a parity page. For example, the data A (data pages A1, A2, A3, A4) as a data correction unit and the parity page AP constituting the set on the first row are 5 bits from the 1st row and 1st column of the array composed of channels and ranks. Each of the pages A1 to A4 and the AP are arranged so as not to appear on the same channel and the same broadcast order while sequentially shifting both the row and the column one by one up to the fifth row. Next, the data B (data pages B1, B2, B3,
B4) and its parity page BP are obtained by shifting each row and column from the first data page A1 of the previous row by one row, that is, from the third row to the first column to the second row and the fifth column, one by one. B1 to B4 and BP are arranged so as not to appear on the same channel and the same broadcast order. Note that the row following the bottom row of the sequence listing is the top row. Therefore, all arrays can be arranged only when the number of columns is the same as the number of odd rows including the row of parity. By performing such arrangement processing, a two-dimensional arrangement can be obtained based on the structure of the effective data to be broadcasted as shown in FIG. 2 and the channels and the ranks as shown in FIG.

Here, the array method in which the pages in the row direction are set as a group has been described, but in the case of two-dimensional data, the pages in the column direction also form a set as is clear from FIG. Therefore, an array method in which pages in the column direction are set may be used. Further, in the present embodiment, each page is simply arranged on a two-dimensional array by using the above-described method. However, the pages are arranged so that they do not appear on the same channel and the same broadcast order. If so, another method may be adopted.

Next, the operation of the present embodiment will be described with reference to the flowchart of the broadcasting station 1 shown in FIG. 4 and the flowchart of the receiving terminal 2 shown in FIG. Note that the broadcast station 1 in the present embodiment includes (m
=) It is assumed that five wireless broadcasting devices 5 are installed. It is assumed that data broadcast at one time includes a total of 16 pages of p (= m-1 = 4) rows and q (= m-1 = 4) columns as shown in FIG.

In the broadcasting station 1, the distribution data distribution device 4
Selects a predetermined number of data pages to be broadcasted this time, that is, data pages of 4 rows and 4 columns from the two-dimensional data to be broadcast from the database server 3 (step 1).
01), redundancy is performed by means of parity, CRC code, or other means so that it is possible to detect that the page could not be normally detected (step 102). Each page is composed of a plurality of subpages in order to avoid a burst error, each of which has an error detection function, and also needs to perform a so-called interleave arrangement in which a parity calculation to be described later is performed corresponding to the relative position of the subpage in the page. However, since this is not the gist of the present invention, the description is omitted.

The distribution data distribution device 4 generates a parity page for each of the rows A to D composed of the redundant pages A1 to D4 by calculating the logical sum of the data at each relative position of each page (step). 103). These are designated as AP to DP. Similarly, the distribution data distribution device 4 generates a parity page for each of columns 1 to 4 by calculating the logical sum of the data at each relative position of each page (step 104). These are designated as P1 to P4. When the pages necessary for the broadcast are generated in this way, the distribution data distribution device 4 forms the arrangement as shown in FIG. 3 by using the above-described method (step 105). Then, while synchronizing each page of the arranged channels, broadcasting is performed via each wireless broadcasting device 5 in the order shown in FIG. 3 (step 1).
06).

On the other hand, the data processing device 7 in the receiving terminal device 2 selects a channel to be received from the broadcast data transmitted from the broadcasting station 1 (step 201), and operates the frequency switching device 6 to receive the data. The page of the target designated matrix is acquired while switching the frequency (step 202). The switching control conforms to a method in which each page is arranged in a two-dimensional array in the broadcasting station 1. This is repeated until all pages to be acquired are received (step 20).
3). In the present embodiment, for example, if data of row A is received, the reception frequency is sequentially switched while synchronizing from channel 1 to channel 5 to acquire five data pages A1 to A4 and parity page AP. . If data of column 1 is to be received, channels 1, 5, 4, 3, 2 from channel 1 to channel 2
, The reception frequency is sequentially switched while synchronizing in the order of 5 to obtain five data pages A1 to D1 and parity page P1. If the data page to be received is not included in the transmitted 16 pages, the reception is not performed.

When all the pages (for five pages) have been acquired, the data processing device 7 determines whether or not all the pages have been normally received (step 204). When all the pages have not been received normally, it is determined whether or not it is only one page (step 205). If two or more pages have not been properly received, it is determined that the page could not be normally received in that cycle. Since the processing after the abnormal termination is not the gist of the present embodiment, the description is omitted. on the other hand,
If only one page cannot be received normally, it is determined whether or not it is a parity page (step 20).
6). If the page is not a parity page, the failed page determined to be abnormally received is restored from the other four pages that were normally received, thereby obtaining four pages of normal data as a result (step 207).

As described above, the first data broadcast including 16 pages of the broadcast data is performed,
When a data page that is not broadcast among the two-dimensional data to be broadcast remains in the database server 3, the broadcast station 1 further performs the above steps 101 to 101.
By repeating step 106, a series of broadcast data is broadcast (steps 107 and 108). For example, if the two-dimensional data to be broadcast is composed of eight columns, the page data A5 to D8 are broadcast in the next process (step 107), and the two-dimensional data is composed of eight rows. In this case, the page data E1 to H4 are broadcasted in the subsequent processing (step 10).
8).

According to the present embodiment, rows (A to D) and columns (1 to 4) of each page generated by dividing data to be broadcast in broadcast station 1 into page units correspond to channels to be broadcast. Since the receiving terminal device 2 is arranged so that it does not appear in the same row and column on the order array, even if a failure occurs in any of the channels, the receiving terminal device 2 corrects the target data page from the other page. Can be obtained normally. In other words, even if a failure over the entire broadcasting time zone occurs in a specific channel, a target data page can be normally obtained by correcting from a page of another channel. This makes it possible to cope with a long-term burst error. Further, even if a failure common to all channels occurs in a specific time zone, a target data page can be normally obtained by correcting from a page in another time zone. As a result, it is possible to cope with a failure in a specific time zone which occurs commonly to all channels. As described above, in the present embodiment, within the range of the page (page 25) received at one time shown in FIG. 3, when a page cannot be received normally, another page that can be received normally is used. Since restoration can be performed, the probability of waiting for a page that could not be received to be retransmitted can be reduced.

In a case where the receiving terminal device 2 for receiving data related to a certain row and the receiving terminal device 2 for receiving data related to a certain column are mixed, for example, the respective data pages are corrected and the target data page is processed. Can be obtained.

Further, since the same data is not broadcast in parallel, a broadcast system with good communication efficiency can be provided without wasting the frequency band used for broadcasting. Further, as apparent from the above operation, a large amount of arithmetic processing is not required when broadcasting data.

In the present embodiment, when the receiving terminal device 2 that performs the above-described reception control is present in the system, the broadcasting station 1 can achieve the above-described effects by performing the above operation. it can. In addition, when the broadcast station 1 is broadcasting the broadcast data having the above-described content, the receiving terminal device 2 can achieve the above-described effect by performing the reception control.

In this embodiment, the arrangement of the channels and the order is set to 5 rows × 5 columns in accordance with the case where five radio broadcasting apparatuses 5 are installed. However, the present invention is not limited to this. is not.

Further, as an embodiment of the parallel broadcasting system according to the present invention, the configuration shown in FIG. 1 is used in the present embodiment, but the configuration is not limited to this as long as the configuration operates similarly. Absent.

Embodiment 2 In the first embodiment, 2
Although the one-dimensional data is the data to be broadcast, the present embodiment describes a case where the broadcasting station 1 broadcasts a database in which one or more one-dimensional data is divided into one-dimensional groups through a plurality of channels. Further, the broadcast receiving side wants to receive only desired data of a group in which the user is interested, or receives only specific data (specific page) in a certain group.
A broadcast system in the case where there is a mix of will be described.

FIG. 6 is a diagram showing the structure of data broadcast in the present embodiment. The data handled in the present embodiment has a one-dimensional structure, and each row summarizes information (for example, stock price information and weather information) belonging to each category. The number of pages constituting each row may be different. However, in order to improve communication efficiency, it is desirable that the number of pages in each row is made as uniform as possible by forming a group by combining a plurality of data. At this time,
Each row arranged with the number of pages m is composed of a part or all of each information or a combination with other information, and the unit composed of m pages is called a subgroup. . In the present embodiment, since one-dimensional data is handled, a set of pages is formed only in the row direction. In the present embodiment, one of the features is to sort the pages in the subgroup in descending order of the probability of being received by the receiving terminal device 2 (hereinafter, referred to as “reception probability”). FIG. 6 shows an example of a data structure that is not aligned to m = 4. According to FIG. 6, each of the subgroups A to E has a data page number of 4, 4, 3, 3, respectively. 2 is comprised.

FIG. 7 is a diagram showing an array of channels and ranks for broadcasting the data shown in FIG. The rules for the arrangement of each data are basically the same as in the first embodiment,
The same rows (A to E) and columns (1 to 4, P) are arranged so as not to appear while shifting one by one on the array of the channels to be broadcast and the order. However, in the first embodiment, one line can be opened in the first data page of the previous line when the next data is arranged, but in the present embodiment, the next data is arranged without opening one line. Therefore, the number of rows in the array may be even or odd.

Next, the operation according to the present embodiment will be described. In the broadcast station 1, as a unit of a page broadcast at one time, in the first embodiment, m rows × m columns (data pages (m−1 ) Rows x (m-1) columns),
In the present embodiment, m rows × m columns (data page m rows × (m
-1) column), and the distribution data distribution device 4 receives a data page in a set composed of a data page and a redundant page after the processing of step 101 and before the processing of step 103. The description is omitted because it is the same as that of the first embodiment except that a process of rearranging in the order of higher probability is added.

Regarding the receiving terminal device 2, the processing for receiving all the pages included in the set is the same as that of the first embodiment.
Therefore, the description is omitted. Here, the operation when the receiving terminal device 2 receives only a specific data page will be described with reference to the flowchart shown in FIG.

The receiving terminal device 2 does not perform reception until a subgroup including a specific data page appears (step 211). Then, when the subgroup is broadcast, the data processing device 7 receives the data from the first page of the subgroup while controlling the frequency switching device 6 to switch the frequency (step 212). If the received page is not the specific data page, the reception of the page is repeated until the specific data page appears (step 21).
3,214). If the received page is a specific data page and the reception is successful, the subsequent reception is terminated (steps 213 and 215). This is because the intended specific data page has been received. If the received page is a specific data page and the reception is not successful, all other pages in the same subgroup are received (steps 213, 215 and 216). It is assumed that other pages have been normally received. Then, a specific data page that cannot be normally received is restored from another normally received page (step 21).
7).

The receiving terminal device 2 according to the present embodiment
By performing reception control as described above, only a specific data page can be normally received or restored.

By the way, in the present embodiment, the data pages are arranged and broadcast in descending order of the reception probability in the subgroup. However, the following effects can be obtained.

For example, it is assumed that the probability that one page can be normally received alone is 99%. Assuming that the target specific data page in a certain receiving terminal device 2 is the data page A1 in the subgroup A shown in FIG. 7, 99% can obtain the target data page A1 by only one reception. . Data page A1 with 1% probability
However, in this case, a total of five receptions are performed to receive the subsequent pages A2 to A4 and the AP. Strict calculation in a case where a reception error occurs simultaneously in two or more pages in a subgroup will be omitted. In this case, the average number of receptions is (9
9% × 1 time + 1% × 5 times =) 1.04 times. That is, the number of receptions can be significantly reduced as compared with the first embodiment in which the number of receptions is always five by receiving all the pages in the subgroup (row). Thereby, the power consumption of the receiving terminal device 2 can be reduced. Of course, when the data page A4 is a specific data page, the average number of receptions increases, but in the present embodiment, the data pages are arranged and broadcast in descending order of the reception probability in the subgroup. Therefore, a specific data page should be able to be received earlier and in a smaller number of times. Therefore, the power consumption of the receiving terminal device 2 can be reduced in the long term or in the entire system.

In the present embodiment, when the receiving terminal devices 2 that perform reception control as described above coexist, the broadcasting station 1 rearranges and broadcasts the data pages in descending order of the reception probability to perform the reception. The power consumption of the terminal device 2 can be reduced. Further, according to receiving terminal device 2 of the present embodiment, when broadcast station 1 broadcasts data pages arranged in descending order of reception probability, power consumption is reduced by performing reception control as described above. can do.

In this embodiment, the data pages obtained at the time of distribution by the distribution data distribution device 4 are rearranged in descending order of the reception probability. 3 may be stored.

Although the receiving terminal device 2 can receive only one channel at a time, a configuration may be adopted in which all channels are simultaneously received and all pages are fetched. In this case, data restoration can be performed even when one or both of a failure in a specific channel and a specific time zone occurs.

The broadcasting system described in the present embodiment can also be applied to a system in which only one radio broadcasting apparatus 5 does not use a plurality of channels, that is, does not broadcast in parallel.

Embodiment 3 In the second embodiment, the data pages are arranged and broadcast in the descending order of the reception probability in the subgroup. In the present embodiment, the probability that the reception terminal device 2 receives the data pages in the arrangement of the data pages is the highest. It is characterized in that the data page is arranged at the end, that is, immediately before the parity page, and the rest are arranged in descending order of reception probability and broadcast.

By the way, in general, it is considered that the number of receiving terminal devices 2 that want to acquire the data in the system differs depending on the type of the data. That is, the reception probability is not uniform depending on the data page. For pages of high user interest, the reception probability, including rebroadcasts, will be high, and other pages will be relatively low. Therefore, a more efficient broadcast system can be provided by increasing the number of broadcasts, that is, the broadcast frequency, by shortening the cycle of repeatedly broadcasting information (pages) of interest to the user. Therefore, the broadcast station 1 periodically broadcasts the same content or the same type of data at different broadcast frequencies depending on the type of the data, so that the reception terminal 2 Thus, a desired page can be acquired at an earlier timing. Here, the data having the same content means the same data page, and broadcasting the same data periodically corresponds to rebroadcasting. The receiving terminal device 2 can obtain a desired page by receiving a rebroadcast portion other than restoring a page as described in the above embodiment. Further, the same type of data means a data page of data (for example, a stock price of a certain company) that changes with time even if the same data.

In other words, information (pages) of high user interest is data with a high reception probability, so that efficient broadcasting can be achieved if the data pages with a high reception probability are broadcast at a high frequency. Can be realized. Therefore, it is assumed that the broadcasting station 1 in the present embodiment broadcasts in such a manner that the frequency of broadcasting the data page having a high reception probability increases accordingly. Note that the reception probability involves not only the factors related to the degree of interest of the user but also factors such as the communication performance and quality of each channel. Therefore, it is necessary to calculate the reception probability strictly considering all these factors. Although it is considered that there is, it is not considered in this embodiment.

Next, the operation of the present embodiment will be described. The basic processing flow on the broadcast station 1 side is the same as that of the second embodiment. Means that a predetermined number of data pages are acquired from the database server 3 so that the broadcast frequency of the data page having a high reception probability is high. In the present embodiment, the data page with the highest reception probability (highest broadcast frequency) in the set of the data page and the parity page is located immediately before the parity page, and the other data pages are implemented in the same manner. As in the second embodiment, the reception probability is arranged in descending order.

Hereinafter, the operation of receiving terminal apparatus 2 will be described. However, since the operation is basically the same as that of the second embodiment, only different points will be described. When the target page has the highest reception probability in the sub-group, the receiving terminal device 2 immediately receives only the page without performing reception from the head of the sub-group. That is, only the data page immediately before the parity page is received. If it cannot be received normally, it waits for the next broadcast, that is, receives the rebroadcast page. If the target page does not have the highest reception probability in the subgroup, the page is received from the first page in the subgroup as in the second embodiment. The operation as described above has the following effects.

In the present embodiment, when a desired page cannot be normally received, if the page has the highest reception probability, a page having the same content is retransmitted in a short cycle. A case in which it is more effective to wait for the next broadcast and receive the number of times than receiving and restoring all pages in the group, and consequently it is effective in consideration of the power consumption of the receiving terminal device 2 There is. That is, when all pages in a subgroup are received and restored,
According to the sub-group A in FIG. 7, it is necessary to receive five times, but if it can be received at the next broadcast, it can be obtained with two times of reception. Since the broadcast frequency of the page with the highest reception probability is high, there is no need to wait so much. Note that if attention is paid only to the data page having the highest reception probability, the same effect can be obtained regardless of where the data page is arranged.

On the other hand, the other pages are received in order from the first page by the same method as in the second embodiment because the retransmitted cycle is relatively long. In some cases, all pages will be received. Embodiment 2
Assuming that the data pages are arranged in descending order of reception probability, for example, the fourth data page of the subgroup receives at least four times each time. However, by arranging the data page with the highest reception probability after that, the fourth data page can be raised to the third and simply reduce the number of receptions for each time. In addition, the data page having a relatively low reception probability has a relatively low broadcast frequency, so that the time to wait before being rebroadcast is not short. Therefore, data pages other than the data page having the highest reception probability are sequentially received from the top of the page as described in the above embodiment, and it is more effective to obtain the data page by restoring it if the reception fails. Conceivable. In this case, all pages are received, but the number of receptions in a normal state can be reduced by one each time as described above. On the other hand, the data page with the highest reception probability does not receive another data page that was previously broadcast in the same subgroup, and cannot be restored when reception fails. In other words, there is no choice but to wait for the rebroadcast, but since the broadcast frequency is high, a long waiting time is not required.

As described above, according to the present embodiment, the data page having the highest probability of being received by receiving terminal device 2 in the subgroup is arranged immediately before the parity page, and the rest are arranged in the descending order of the reception probability. Since the broadcast is performed side by side, the number of receptions as a whole can be reduced, and as a result, the power consumption of the reception terminal device 2 can be reduced.

In the case where the receiving terminal device 2 that performs reception control as described above is mixed, the broadcasting station 1 according to the present embodiment arranges the data page having the highest reception probability immediately before the parity page and broadcasts the data page. By doing so, the power consumption of the receiving terminal device 2 can be reduced. Further, according to receiving terminal apparatus 2 in the present embodiment, when broadcast station 1 is broadcasting a data page with the highest reception probability placed immediately before a parity page, reception control is performed as described above. By doing so, power consumption can be reduced.

In the present embodiment, only the data page with the highest reception probability is arranged at the end of the sub-group list. If the power consumption is high and the effect of reducing the power consumption described above is exerted, the sub-groups may be arranged in the rear part. The number of data pages to be rearranged is a trade-off between the number of receptions and the page waiting time.

The broadcasting system described in the present embodiment can be applied to a system in which only one radio broadcasting apparatus 5 does not use a plurality of channels, that is, does not broadcast in parallel.

Embodiment 4 In each of the above embodiments, a system in which the same data is not broadcast in parallel has been described. However, in the present embodiment, even if the frequency band is used to some extent inefficiently, the same data is transmitted in parallel. A description will be given of a broadcasting system that ensures data reception in a receiving terminal device by broadcasting.
Although the operation is slightly different as described later, the configuration itself may be the same as that of FIG.

FIG. 9 is a diagram showing a schedule of data to be broadcasted in the present embodiment. As shown in FIG. 9, in the present embodiment, a plurality of channels are used to broadcast the same data pages A1 to A4 and B1 to B4. Also, a broadcast time to which a page is not allocated, that is, a non-broadcast time (pause time) is indicated by a hyphen "-". In this embodiment, a channel normally used for data broadcasting is a normal channel, and a channel for broadcasting the same data as data broadcast from the normal channel in parallel with a certain time delay is a backup channel. Respectively. In the method of broadcasting a plurality of the same data in parallel as described above, when the receiving terminal device 2 fails to receive a certain page when using the regular channel, the receiving frequency is switched to the backup channel and the same data is received with a delay. Thus, data can be recovered.

A feature of this embodiment is that a non-broadcasting time is periodically inserted between a series of pages broadcast on each channel. Thereby, the receiving terminal device 2 can return the receiving channel to the regular channel when the non-broadcasting time is reached while receiving data from the backup channel.

Next, the operation in the present embodiment will be described with reference to the flowchart on the broadcast station 1 side shown in FIG. 9 and the flowchart on the receiving terminal device 2 side shown in FIG. Note that, in the present embodiment, the wireless broadcasting device 5-
1 is a normal channel, and the wireless broadcasting device 5-2 is a backup channel.

The distribution data distribution device 4 obtains data to be broadcast from the database server 3 (step 121),
Generates a page to be broadcasted, and sets the radio broadcast device 5-1 to m
Data broadcasting is performed continuously for (m ≧ 3) pages (step 122). Thereafter, after pausing by leaving a broadcast time for n (n ≧ 2) pages (step 123), if there is data to be broadcast (step 124), m pages continue from the wireless broadcasting device 5-1 again. To broadcast data (step 122).

Further, in parallel with the above processing, the distribution data distribution device 4 sets a broadcast time for n pages (step 125), and then broadcasts m pages continuously from the radio broadcast device 5-2 for m pages. Broadcast (step 12
6). If there is data to broadcast (step 12
7) The above process (steps 125 and 126) is repeated. In this way, the broadcasting station 1 broadcasts pages of the same content in parallel.

Data processing device 7 in receiving terminal device 2
Uses the frequency switching device 6 to adjust the reception frequency to the regular channel corresponding to the radio broadcasting device 5-1 (step 221), and receives the broadcast data (step 22).
2). Here, when the page cannot be received normally (step 223), the reception frequency is switched by operating the frequency switching device 6 to match the backup channel corresponding to the radio broadcasting device 5-2 (step 22).
4). Thereafter, the receiving terminal device 2 receives the data broadcast from the backup channel (step 225). However, from the backup channel, a page having the same content as the page that cannot be normally received is delayed by n pages. Therefore, a page that cannot be normally received on the regular channel can be received. When the time required for non-broadcasting time has been reached in receiving from the backup channel, the data processing device 7 operates the frequency switching device 6 to return the reception frequency to the regular channel of the wireless broadcasting device 5-1 (step 221). , Data reception is continued (step 222).

According to the present embodiment, non-broadcast time is periodically inserted between a series of broadcasted pages. Therefore, even when the receiving channel is once switched to the backup channel, the non-broadcast time is maintained. To the regular channel.

By the way, in the present embodiment, the non-broadcasting time n is set to two or more pages in consideration of the assumed maximum burst length width, that is, that a failure occurs across pages. Also, a series of data (page) length m is
(N + 1) pages or more. It is theoretically efficient to set m = n + 1.

In the above description, the number of backup channels is one. However, a failure may occur during reception from the backup channel. Therefore, the reliability is improved by providing a plurality of backup channels. You may do so.

[0081]

According to the present invention, each page in a set composed of a data page to be broadcast and a redundant page of the data page appears in the same row and column on the array of channels and ranks to be broadcast. As a result, the receiving terminal device can normally obtain a target data page by correcting from another page even if a failure occurs in any channel or during a certain time zone. . Even if a long-term burst error occurs, or if a failure common to all channels occurs in a specific time zone, it can be dealt with. Therefore, the probability of waiting for data that could not be received normally to be retransmitted can be reduced.

Further, since the same data is not broadcast in parallel, the band of the frequency used for the broadcast is not wasted, and a large amount of arithmetic processing is not required when broadcasting the data. Can be provided.

Further, since the number of receptions can be greatly reduced, the power consumption of the receiving terminal device can be reduced.

Since the non-broadcast time is periodically inserted between a series of data to be broadcast, even if the receiving channel is once switched to the backup channel, it is necessary to return to the regular channel during the non-broadcast time. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a broadcasting system according to the present invention.

FIG. 2 is a diagram showing a structure of data broadcast in the first embodiment.

FIG. 3 is a diagram showing an array of channels and ranks for broadcasting the data shown in FIG. 2;

FIG. 4 is a flowchart showing an operation on the broadcast station side according to the first embodiment.

FIG. 5 is a flowchart showing an operation on the receiving terminal device side in the first embodiment.

FIG. 6 is a diagram showing a structure of data broadcast in a second embodiment.

FIG. 7 is a diagram showing an array of channels and ranks for broadcasting the data shown in FIG. 6;

FIG. 8 is a flowchart showing an operation on the receiving terminal device side in the second embodiment.

FIG. 9 is a diagram showing a schedule of data to be broadcast in the fourth embodiment.

FIG. 10 is a flowchart showing an operation on the broadcast station side according to the fourth embodiment.

FIG. 11 is a flowchart showing an operation on the receiving terminal device side in the fourth embodiment.

FIG. 12 is a diagram showing a relationship between each frame and a slot for explaining a conventional digital cordless telephone transmission system.

FIG. 13 is a conceptual diagram showing a conventional data broadcasting system.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 broadcast station, 2 receiving terminal device, 3 database server, 4 distribution data distribution device, 5 wireless broadcasting device, 6
Frequency switching device, 7 Data processing device.

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[Procedure amendment]

[Submission date] February 19, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

1. A of a broadcast station broadcasting the data page generated by blocking plurality of data to be broadcast from a plurality of channels in parallel, at least any one the broadcast station broadcasts channel
And a receiving terminal device for receiving data from the broadcast station, wherein the broadcast station specifies a predetermined number of data pages to be broadcast from the data pages to be broadcast, and specifies each of the specified data pages. Broadcast schedule control means for generating a redundant page enabling correction of the above, and generating a set together with the specified data page; and controlling the broadcast schedule control on a two-dimensional array composed of broadcast channels and broadcast orders. Page arranging means for arranging a set of a data page and a redundant page generated by the means so that the respective pages do not appear on the same channel and in the same broadcast order; and data arranged two-dimensionally by the page arranging means in parallel. A parallel broadcast system comprising: a data broadcast control unit for broadcasting.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

[0012]

In order to achieve the above object, a parallel broadcasting system according to the present invention provides a broadcasting system .
Data generated by blocking multiple data
Broadcasting stations that broadcast tappages from multiple channels in parallel
And at least one channel broadcast by the broadcasting station.
A receiving terminal device for receiving data from the channel.
In the column broadcasting system, the broadcasting station is a broadcasting target.
A predetermined number of data pages to be broadcast from among the data pages
Page and correct each specified data page
A redundant page to enable
Broadcast schedule control means for generating a set together with a page,
Two-dimensional distribution consisting of broadcasting channels and broadcasting order
On the column, the data generated by the broadcast schedule control means is shown.
Page and the redundant page are the same
Channels and pages that are arranged so that they do not appear in the same broadcast order.
Two-dimensional array by means of a page array and a page array
Data broadcasting control means for broadcasting the
Have

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013] Further , the receiving terminal device is adapted to transmit the data.
Receiving the two-dimensionally arranged data broadcast by the transmission control means;
Data page that could not be received normally when
Data page and the same channel or broadcast time zone
Data reception to restore using other pages that can always be received
It has processing means .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

[0014] Further , the broadcasting station transmits the data page to the receiving terminal device in a set of a data page and a redundant page generated by the broadcast schedule control means.
In which side by side feeding release the highest reception probability order with.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Further , the broadcast schedule control means includes:
Wherein as broadcast frequency of high data page reception probability by receiving terminal apparatus is high, identifies the data page to be broadcast to generate the set, the page sequence means, data to which the broadcast schedule control means has generated In a set of pages and redundant pages, data pages with a high broadcast frequency are rearranged after the data pages and are arranged on the two-dimensional array.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

A parallel broadcast system according to another invention is generated by dividing data to be broadcast into a plurality of blocks on the same channel and the same broadcast order on a two-dimensional array composed of broadcast channels and broadcast orders. A broadcasting station that broadcasts in parallel from a plurality of channels broadcast data arranged such that each page in a set composed of a data page and a redundant page that enables correction of the data page is not displayed, A receiving terminal device for receiving broadcast data broadcasted by a broadcasting station, wherein the receiving terminal device receives only the specific set by switching a receiving frequency from broadcast data broadcasted by the broadcasting station. It has reception processing means.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

Further, the data reception processing means, each
When it is desired to receive only a specific data page from among the broadcast data in which the data pages constituting the set are arranged in descending order of the reception probability, the data page is received from the top in the set including the specific data page. The data reception is stopped when the specific data page can be normally received.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

Further, the data reception processing means receives all the pages in the set when the specific data page cannot be normally received, and receives the specific page which cannot be received based on another page in the set. The data page is restored.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Further , the data reception processing means includes :
Broadcast high data page of the broadcasting frequency in a set from among the broadcast data which is located at the rear of the arrangement of the data page
When frequently received data pages cannot be received normally
Wait for retransmission and receive other data pages normally.
If not received, receive all pages in the group
And the page could not be received based on other pages in the group.
The data page is restored .

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

A broadcasting system according to another invention comprises a broadcasting station for broadcasting a data page generated by dividing data to be broadcast into a plurality of blocks, and a receiving terminal device for receiving data broadcast by the broadcasting station. In the broadcasting system having, the broadcast station specifies a predetermined number of data pages to be broadcast from among the data pages to be broadcast, and generates a redundant page that enables correction of the specified data pages. A broadcast schedule control unit for generating a set together with the specified data page; and a data broadcast control unit for broadcasting data obtained by combining the data page generated by the broadcast schedule control unit and the redundant page, data pages constituting side by high probability of reception order by the receiving terminal device <br/> a is for feeding release.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

According to another aspect of the present invention, there is provided a broadcasting system comprising a set of a data page generated by dividing data to be broadcast into a plurality of blocks, and a redundant page capable of correcting the data page. includes a broadcasting station for sending release side by side the data page having a high probability of reception order, and a receiving apparatus that receives broadcast data which the broadcasting station broadcasts, the receiving terminal apparatus receiving only specific data page If it is desired to do so, it has a data reception processing means for stopping data reception when the specific data page can be normally received in the set including the specific data page in the transmitted broadcast data.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

Further , the data reception processing means receives all the pages in the set when the specific data page cannot be normally received, and receives the specific page which cannot be received based on another page in the set. The data page is restored.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

[0023] A broadcasting system according to another invention includes a broadcasting station that broadcasts a data page generated by dividing data to be broadcast into a plurality of blocks, and a receiving terminal device that receives data broadcast by the broadcasting station. in the broadcasting system comprising, the broadcast station, the so broadcast frequency of high data page reception probability by the reception terminal apparatus from the data page is increased to be broadcast target, specifying a predetermined number of data pages to be broadcast Broadcast schedule control means for generating a redundant page enabling correction of each of the specified data pages and generating a set together with the specified data pages; and providing the data page generated by the broadcast schedule control means with redundancy. Page arranging means for arranging a frequently broadcast data page in the set of pages behind the data page arrangement; Those having a data broadcast control means for broadcasting the data arranged by said page sequence means.

[Procedure amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

According to another aspect of the present invention, there is provided a broadcast system having a reception probability.
Are arranged so that the broadcast frequency of data pages with high
A data page generated by blocking plurality of broadcast data, the data sequence page high data page of the broadcast frequency in the set composed of the redundant page that enables correction of the data page of a broadcasting station to transmit release disposed rearwardly, and a receiving apparatus that receives broadcast data which the broadcasting station broadcasts, the receiving terminal apparatus, the broadcast frequency in the set within in the broadcast data high
If the data page cannot be received normally, resend
Wait, can't receive other data pages normally
Received all the pages in the group,
Data page that could not be received based on other pages
To restore the image.

[Procedure amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

A parallel broadcasting system according to another aspect of the present invention provides a broadcasting station that delays data broadcast from a regular channel and separately broadcasts from a backup channel to broadcast data of the same content in parallel with a time difference, and the broadcast station And a receiving terminal device for receiving data to be broadcast from a regular channel or a backup channel, wherein the broadcasting station broadcasts by periodically inserting non-broadcasting time between a series of data. .

[Procedure amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

A parallel broadcasting system according to another invention comprises a broadcasting station that delays data broadcasted from a regular channel and separately broadcasts the data from a backup channel to broadcast the same data in parallel with a time difference, In a parallel broadcasting system having a receiving terminal device that continuously performs broadcast reception by switching a receiving channel to a backup channel when a failure occurs during data reception, the receiving terminal device backs up broadcasted data. The reception channel is returned to the normal channel when the non-broadcasting time periodically inserted during reception from the channel is reached.

Claims (15)

[Claims] 1. A broadcast station for broadcasting data in parallel on a plurality of channels, and a receiving terminal device capable of receiving data from the plurality of channels for receiving data broadcast by the broadcast station, A parallel broadcast system for performing broadcast / reception of broadcast data including redundancy information for enabling data correction while sequentially switching channels. 2. A broadcast station for broadcasting data pages generated by dividing data to be broadcast into a plurality of blocks from a plurality of channels in parallel, and receiving data of any of the channels broadcast by the broadcast stations. In the parallel broadcasting system including: a receiving terminal device, the broadcast station specifies a predetermined number of data pages to be broadcast from the data pages to be broadcast, and enables correction of the specified data pages. A broadcast schedule control means for generating a redundant page and generating a set together with the specified data page; and a data page generated by the broadcast schedule control means on a two-dimensional array composed of broadcast channels and broadcast orders. Page arrangement means for arranging a set of a redundant page and a redundant page so that the respective pages do not appear in the same channel and the same broadcast order. If, parallel broadcasting system characterized by having a data broadcast control unit for broadcasting in parallel a two-dimensional array of data by the page arrangement means. 3. The broadcast station, in a set of a data page and a redundant page generated by the broadcast schedule control means, arranged in the order in which the probability that the data page is received by the receiving terminal device is high. 3. The parallel broadcast system according to claim 2, wherein the broadcast is performed. 4. The broadcast schedule control means generates the set by specifying a data page to be broadcast so that a broadcast frequency of a data page having a high probability of being received by the receiving terminal device is high, and generating the set. The means is arranged such that a data page having a high broadcast frequency is rearranged after the data page in the set of the data page and the redundant page generated by the broadcast schedule control means, and is arranged on the two-dimensional array. The parallel broadcasting system according to claim 2, wherein 5. A data page generated by dividing broadcast data into a plurality of blocks on the same channel and the same broadcast order on a two-dimensional array composed of channels to be broadcast and broadcast orders, and a data page of the data page. A broadcast station that broadcasts broadcast data arranged in parallel so that each page in a set composed of a redundant page that enables correction does not appear from a plurality of channels, and broadcast data broadcast by the broadcast station. A receiving terminal device for receiving, and wherein the receiving terminal device has data reception processing means for receiving only pages in the set by switching a receiving frequency from broadcast data broadcasted by the broadcast station. A parallel broadcasting system characterized by the following. 6. The data reception processing means, when it is desired to receive only a specific data page from broadcast data in which the data pages are arranged in descending order of the probability of being received in the group, 6. The parallel broadcasting system according to claim 5, wherein a data page is received from the head in the set including the page, and the data reception is stopped when the specific data page can be normally received. 7. The data reception processing means receives all the pages in the set when the specific data page cannot be normally received, and specifies the specific data page which cannot be received based on another page in the set. 7. The parallel broadcasting system according to claim 6, wherein the data page is restored. 8. The data reception processing means, when the broadcast station broadcasts, in parallel, broadcast data in which a data page with a high broadcast frequency is arranged behind the data page in the set, the broadcast data is included in the broadcast data. 6. The parallel broadcasting system according to claim 5, wherein, when it is desired to receive only a specific data page from the group, only the data page rearranged in the group including the specific data page is received. 9. A broadcasting system comprising: a broadcasting station that broadcasts a data page generated by dividing data to be broadcast into a plurality of blocks; and a receiving terminal device that receives data broadcast by the broadcasting station. The broadcast station specifies a predetermined number of data pages to be broadcast from the data pages to be broadcast, generates a redundant page that enables correction of each of the specified data pages, and generates a redundant page together with the specified data page. Broadcast schedule control means for generating a set, and data broadcast control means for broadcasting data in which a data page generated by the broadcast schedule control means and a redundant page are combined, and the data page in the set is provided. Broadcasting data arranged in descending order of probability of being received by the receiving terminal device 10. Within a set composed of a data page generated by dividing data to be broadcast into a plurality of blocks and a redundant page enabling correction of the data page, the probability of reception is high. A broadcasting station that broadcasts after arranging the data pages, and a receiving terminal device that receives broadcast data broadcasted by the broadcasting station, wherein the receiving terminal device transmits when only a specific data page is to be received. A broadcast system comprising: a data reception processing unit that stops data reception when the specific data page can be normally received in the set including the specific data page in the received broadcast data. 11. The data reception processing means receives all pages in the set when the specific data page cannot be received normally, and specifies the specific data page which could not be received based on other pages in the set. 11. The broadcasting system according to claim 10, wherein the data page is restored. 12. A broadcasting system, comprising: a broadcasting station that broadcasts a data page generated by dividing data to be broadcast into a plurality of blocks; and a receiving terminal device that receives data broadcast by the broadcasting station. The broadcasting station specifies a predetermined number of data pages to be broadcast from the data pages to be broadcast such that the data page having a high probability of being received by the receiving terminal device has a high broadcast frequency. A broadcast schedule control unit that generates a redundant page that enables correction of the data page and generates a set together with the specified data page; and in the set of the data page and the redundant page generated by the broadcast schedule control unit, Page arranging means for arranging a data page with a high broadcast frequency after the arrangement of the data pages; And a data broadcast control means for broadcasting data arranged by the means. 13. A data page having a high broadcast frequency in a set including a data page generated by dividing data to be broadcast into a plurality of blocks and a redundant page capable of correcting the data page. A broadcasting station that broadcasts after being arranged behind the arrangement of pages, and a receiving terminal device that receives broadcast data broadcast by the broadcasting station, wherein the receiving terminal device wants to receive only a specific data page A broadcast system that receives only data pages that are rearranged in the group including the specific data page in the transmitted broadcast data. 14. A broadcasting station that delays data broadcast from a regular channel and separately broadcasts from a backup channel to broadcast data of the same content in parallel with a time difference, and transmits data broadcast by the broadcasting station to a regular channel or A parallel broadcasting system comprising: a receiving terminal device for receiving from a backup channel; and wherein the broadcasting station periodically inserts non-broadcasting time between a series of data and broadcasts. 15. A broadcasting station that delays data broadcast from a regular channel and separately broadcasts it from a backup channel to broadcast data of the same content in parallel with a time difference, and a failure occurs when receiving data from the regular channel. And a receiving terminal device that continuously performs broadcast reception by switching the receiving channel to a backup channel, when the receiving terminal device is receiving broadcast data from the backup channel. A parallel broadcasting system characterized by returning a receiving channel to a regular channel when a non-broadcast time period regularly inserted into the broadcast channel is reached.