JP2003338800A - Audio output switcher and satellite broadcast receiving / reproducing device - Google Patents

Abstract

(57) [Summary] [Problem] To prevent the sound of a speaker from being interrupted even when reception of satellite broadcasting is poor. SOLUTION: A first input terminal connected to a high-speed digital interface terminal of the satellite broadcast receiving / reproducing device, a second input terminal connected to an audio output terminal of the satellite broadcast receiving / reproducing device, and an audio signal for audio equipment. Music data storage means for storing music data encoded with high efficiency compression in a casing equipped with an output terminal for outputting music data, and reproduction control means for reading music data from the storage means and reproducing the music by decoding and reproduction means. And an audio signal A input to the second input terminal and an audio signal B output from the decoding / reproducing means.
A switching circuit that outputs one of the signals from the output terminal; a reception failure detection unit; and a switching circuit that controls the switching circuit in response to a detection signal of the reception failure detection unit. Is detected during the audio signal B
From the output terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio output switching device and a satellite broadcast receiving / reproducing apparatus, and more particularly to a technique for dealing with poor reception of satellite broadcast radio waves.

[0002]

2. Description of the Related Art A block diagram of a satellite broadcast receiving / reproducing apparatus is shown in FIG. The control unit 10 centrally controls each unit via the CPU bus 20 to input / output data and controls the overall operation. An intermediate frequency (IF) signal received / converted by a parabolic antenna or the like is input to the tuning unit 30. here,
The demodulation unit 40 demodulates the program multiplexed data in which a plurality of programs are multiplexed from the carrier by tuning to the IF of the carrier wave including the selected channel (program). The program multiplexing data is demultiplexed by the demultiplexing unit 50 into the program data of each channel. The demultiplexing unit 50 also performs error correction and descrambling. The MPEG2 decoding unit 60 performs decoding processing of audio / video signals. Audio / video signals are sent to each control unit 70
It is output to a TV monitor and an audio amplifier (not shown) via a and 70b. A high-speed digital interface section 80 is connected to the CPU bus 20, and outputs an ID output signal from the demultiplexing section 50 and descrambled transport data. Further, the CPU bus 20 is connected with a modem 110 for communicating with the outside and an operation input unit 120 for receiving a user's operation input.

[0003]

The problem is that the received radio wave is attenuated due to bad weather or the like. At this time, the music that had been playing up to that point suddenly cuts off from the speaker connected to the audio amplifier. At present, digital multi-channel satellite broadcasting is being introduced into homes and stores in place of the conventional cable broadcasting music programs.
Even though I use it after paying the monthly reception fee, users get angry if the music they are enjoying is interrupted. In addition, in a karaoke business, a service for playing music by satellite broadcasting programs is provided between accompaniment music performed by the karaoke device. Sudden interruption of this service may adversely affect the mood in the store and hinder business.

The present invention has been made in view of the above problems, and an audio output switch and a satellite broadcast reception / reproduction that keep the audio output to the outside even if the satellite broadcast cannot be received normally. The purpose is to provide a device.

[0005]

An audio output switching device according to a first aspect of the present invention is an audio output switching device for relaying an audio signal from an external satellite broadcast receiving / reproducing apparatus to an external audio device. A first input terminal connected to the high-speed digital interface terminal of the reception / reproduction device, and a second input terminal connected to the audio output terminal of the satellite broadcast reception / reproduction device;
In a casing equipped with an output terminal for outputting an audio signal to an audio device, a music data storage means for storing music data that has been subjected to high-efficiency compression coding, and to decode the music data that has been subjected to high-efficiency compression coding. Decoding / reproducing means for reproducing an audio signal, and reproduction controlling means for reading music data from the accumulating means and reproducing music by the decoding / reproducing means
A switching circuit for outputting from the output terminal either the audio signal A input to the second input terminal or the audio signal B output from the decoding / reproducing means, and satellite broadcasting based on the signal input to the first input terminal. Receiving failure detecting means for detecting that the receiving / reproducing apparatus is in a poor receiving state, and controlling the switching circuit in response to the detection signal of the poor receiving detecting means, receiving the audio signal A during the period not in the poor receiving state. The switching control means for outputting the audio signal B from the output terminal is mounted during the period when the defect is detected.

According to the present invention, in addition to the above configuration, an audio output switching device can be provided which appropriately has the following requirements (A) to (H). (A) A first user interface unit for selecting a reproduction tune in a poor reception state is provided, and in the poor reception state, the reproduction control unit reads the music data designated by the first user interface unit from the storage unit and reproduces it. A voice output switching device characterized by the above.

(B) A second user interface unit for instructing to forcibly output the stored music is provided.
A voice output switcher, wherein the switching control means outputs a voice signal B from the output terminal when a command is input from the user interface means. (C) A voice output switcher characterized in that the second user interface means specifies a song to be played.

(D) Music selection information storage means for extracting and updating the music selection information from the signal input to the first input terminal is stored, and the reproduction control means stores the stored information in the music selection information storage means in a poor reception state. An audio output switching device which reads the music data corresponding to the above from the storage means and reproduces it.

(E) A means for extracting highly efficient compression-encoded music data from the signal input to the first input terminal and storing it in the storage means, and the reproduction control means is provided for the music stored by this means. An audio output switching device characterized by processing data.

(F) A spare voice input terminal and a third user interface means for setting valid / invalid of the spare voice input terminal are provided, and the switching circuit outputs the voice signal C input to the spare voice input terminal. It is possible to output from the output terminal, and when the switching control circuit is set to be valid by the third user interface means, the switching control circuit outputs the audio signal C from the output terminal during the period when the reception failure is detected. And audio output switch.

(G) A fourth user interface means for instructing to forcibly output the audio signal C input to the auxiliary audio input terminal is provided, and switching control is performed when an instruction is input by the fourth user interface means. The means outputs a voice signal C from the output terminal.

A satellite broadcast receiving / reproducing apparatus according to a second aspect of the present invention includes a music data storage unit that stores music data that has been subjected to high-efficiency compression coding, and a music signal that is decoded by decoding the music data that has been subjected to high-efficiency compression coding. Decoding / reproducing means for reproducing, reproduction control means for reading out music data from the accumulating means and reproducing music by the decoding / reproducing means, audio signal A input to the second input terminal and audio signal B output from the decoding / reproducing means.
A switching circuit for outputting any one of the above from the output terminal, a reception defect detecting means for detecting that the reception signal is in a reception failure state based on a reception signal, and a first user for selecting a reproduction song in the reception failure state. Interface means, music selection means for selecting and reproducing music data designated by the first user interface means from music data stored in the accumulating means when a reception failure state is detected, and reception failure First switching control means for controlling the switching circuit in response to the detection signal of the detection means, and outputting the audio signal A from the output terminal while the reception failure is detected and the audio signal B when the reception failure is detected. And a second user interface means for instructing to forcibly output the stored music, and a voice when an instruction is input by the second user interface means. In which the No. B and a second switching control means for outputting from the output terminal.

According to the present invention, in addition to the above-mentioned structure, a satellite broadcast receiving / reproducing apparatus can be provided which appropriately has the following requirements (a) to (d). (A) A satellite broadcast receiving / reproducing apparatus characterized in that the second user interface means specifies a song to be played. (B) The music selection information storage means for extracting and updating the music selection information from the received reproduction signal and storing the music selection information is provided. In the poor reception state, the music selection means uses the reproduction control means for music data corresponding to the storage information of the music selection information storage means. A satellite broadcast receiving and reproducing apparatus characterized by reproducing.

(C) As a configuration for replacing the first user interface means, there is provided music selection information storage means for extracting and updating the music selection information from the received reproduction signal, and the music selection means stores the music selection information in a poor reception state. A satellite broadcast receiving / reproducing apparatus characterized in that the reproduction control means is caused to reproduce the music data corresponding to the storage information of the means.

(D) A means for extracting highly efficient compression-encoded music data from the received reproduction signal and storing the music data in the storage means, and the reproduction control means processes the music data stored by this means. A satellite broadcast receiving and reproducing apparatus characterized by the above.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION ===== First Mode ===== <<<< Overview >>>> As one embodiment, a conventional satellite broadcast receiving / reproducing apparatus (see FIG. 1) is used. A mode in which the audio output switching device of the present invention is externally attached will be described. As shown in the system configuration diagram of FIG.
The audio output system of 0 is connected to the amplifier 300 via the audio output switcher 200. The audio output from the amplifier 300 is output to the speaker 400. The video output is output to the TV monitor 500 as usual. While the reception radio wave is normally received, the audio output switcher 200 outputs the audio signal output from the reception / reproduction device 100 to the amplifier 300.
Relay to. When it falls into the poor reception state, the built-in synthesizer outputs an audio signal.

<<< Audio Output Switch >>> The configuration and operation of the audio output switch 200 will be described with reference to the block circuit diagram of FIG. The control unit 210 is composed of a CPU, a ROM and a RAM, and uniformly controls the operation of the audio output switching device 200. An operation / display panel section 220, a high-speed digital interface section 230, a MIDI sound source section 240 as a synthesizer, an audio signal switching section 250, and a genre selection switch 260 are connected to the control section 210. The number of the channel being received by the reception / reproduction device is displayed on the operation / display panel unit 220. The control unit 210 executes a predetermined operation according to the operation input received by the operation / display panel unit 220. High-speed digital interface section 2
A high-speed digital interface terminal on the receiving and reproducing apparatus side is connected to 30, and an ID output signal is input. This ID output signal is ID-DATA, ID-CLOCK,
It consists of three types of signals, ID-SYNC. The ID output signal is input to the control unit 210 through the high speed digital interface unit 230. SE for ID-DATA signal
RVICE-ID is included, and this SERVICE
The control unit 210 monitors the input of the ID to detect a poor reception state. The SERVICE-ID originally indicates a channel number being received, and can be obtained at a maximum cycle of 100 milliseconds.

As a method of detecting the poor reception state by monitoring the SERVICE-ID, the number of times the SERVICE-ID could not be detected is counted, and when the continuous failure cannot be detected for a predetermined number of times or more, it is determined that the poor reception state has occurred. To do. As a result, a reception error occurs momentarily even though the normal reception state is maintained, and the SERVICE-ID
It is possible to prevent an erroneous determination as a poor reception state when is not detected several times.

When it is determined that the reception is poor, the control unit 210 reads out predetermined MIDI data. This MIDI data is prepared for each music genre for a predetermined number of songs and is stored in the ROM of the control unit 210. The MIDI sound source unit 240 is controlled based on this MIDI data to generate an audio signal. At the same time, the audio signal switching unit 25
0 is switched to use the external output as the audio signal from the MIDI sound source unit 240. The audio signal switching unit 250 is composed of a well-known semiconductor switch.

When reading MIDI data in the poor reception state, the music genre designated by the genre selection switch 260 is selected. A genre identifier is attached to each MIDI data, and the corresponding MIDI data is read out as appropriate. As specific music genres in this embodiment, there are four genres such as pops, enka, light music, and classical music. Two tunes are prepared for each genre, and these two tunes are alternately repeated during poor reception.

When the normal reception state is restored by returning from the poor reception state, the voice output switching unit 200 is immediately actuated to switch the external output to the reproduced voice of the received radio wave and stop the performance by the MIDI data. As a method of detecting the recovery of the reception state, the number of times the SERVICE-ID has been detected is counted, and the case where the SERVICE-ID has been continuously detected a predetermined number of times or more is determined as the normal reception state. As a result, the SERVICE-ID can be detected several times even though it is only a momentary malfunction or a momentary recovery while the poor reception state continues, and therefore, the reception state is erroneously determined to be a normal reception state. It is possible to prevent the output from being switched.

Further, even when the power of the receiving / reproducing apparatus is turned off, the SERVICE-ID cannot be detected.
It is necessary to take measures against this. At this time, SE
There may be a case where it is desired to avoid receiving the audio signal by the MIDI sound source unit 240 as an external output, because the RVICE-ID cannot be detected and the reception is considered to be poor reception. In this case, the presence or absence of the input level of the ID-CLOCK signal of the ID output signals is monitored. If this is not the case, it is considered that the power supply of the reception / reproduction device is off, and the reception failure detection operation is not performed. On the contrary, when the user does not want to hear the reproduced sound because the power of the receiving / reproducing apparatus is off, if the user wants the MIDI sound source section 240 to play the music from the speaker, the ID-CLOCK signal is ignored and the reception failure detection operation is performed. To be executable.

An example of the external appearance of the audio output switch 200 is shown. As shown in the front view of FIG. 4A, a display 220a and a switch group 220b forming the operation / display panel unit 220 are attached. Display 2
20a displays the channel number being received by the satellite broadcast receiving and reproducing apparatus. By operating the switch group 220b, the audio output to the amplifier 300 is transmitted to the MIDI sound source section 240.
Forcibly switches to the audio signal. This forced switching can be executed during normal reception regardless of the broadcast reception state. The switch group 220b is composed of three switches and is identified by the numbers 1 to 3. Each switch is assigned a specific song such as "Warship March" for pachinko parlors and the like, and a predetermined music is output by selectively turning on this switch.

As shown in the rear view of FIG. 4B, the audio output switch 200 is provided with an audio input terminal 250a, an audio output terminal 250b, a data input terminal 230a and a genre selection switch 260. The audio signal reproduced from the reception / reproduction device 100 is input to the audio input terminal 250a. An audio signal is output from the audio output terminal 250b to the amplifier 300. The ID output signal is input to the data input terminal 230a. The genre selection switch 260 is a well-known DIP switch. A large number of DIP switches associated with each music genre are arranged side by side, and one of them is turned on to select the music genre.

<<< Others >>> (a) There are various methods for selecting the genre of music played from the speaker 400 in the poor reception state. For example, it is selected according to the channel being received. Channels may have program contents specialized for each music genre or category. It is a channel dedicated to pop music and a channel dedicated to foreign rock. The control unit 2 uses the channel data being received from the ID output signal as genre information.
It is stored in the RAM 10 at any time. On the other hand, the data table in which the music genres are associated with the channels is previously RO
Store it in M. For example, it is assumed that the channel number 401 is foreign lock and the channel number 450 is classic. When the reception failure occurs, the channel data is read from the RAM and the music genre is determined by referring to the data table. In addition to this, there is also a method of using program data multiplexed in the received radio wave.
The transport data from the high-speed digital interface terminal on the receiving and reproducing device side is used. This data is captured by the high speed digital interface unit 230. When a music program is broadcast, music category data is attached to the program data as broadcast content. This category data is stored in the RAM as genre information at any time. On the other hand, a data table in which music genres are associated with category data is stored in the ROM in advance. When the reception failure occurs, the category information is read from the RAM and the music genre is determined by referring to the data table.

(B) MIDI data of music sounded from a speaker in a poor reception state may be multiplexed with broadcast radio waves for distribution. This eliminates the need to store MIDI data in ROM in advance. MI of different music each time
If the DI data is distributed, it is sufficient to prepare a memory capable of storing several songs, which requires a relatively small capacity. Specifically, MIDI data is extracted from the transport data of broadcast waves and stored in an appropriate memory such as a RAM for use. Also, MIDI
When multiplexing data on broadcast waves, MIDI data of the same music as the broadcast music may be multiplexed and distributed. In other words, just before or during the broadcasting of a certain music, it is repeated with an appropriate time interval, and the corresponding MIDI
Distribute one song of data. The memory capacity is enough for this one song. Then, when the reception failure occurs, the MIDI data that is the same as the broadcast music that was being received is immediately started to be output to the outside. From the speaker, the music of the same music as the received radio waves flows without interruption.

(C) For example, as shown in FIG. 5, the audio output switching device 200 incorporated in the receiving / reproducing apparatus 100 to be integrated is also included in the present invention. In this case, the control unit 1
0 reads MIDI data from the ROM and controls the MIDI sound source unit 130 to generate an audio signal. At the same time, the audio signal switching unit 140 is switched to use the external output as the audio signal from the MIDI sound source unit 130. The function of genre selection may be provided in the operation input unit 120, or a genre selection switch may be separately provided. Also, the audio signal switching unit 1
A configuration without 40 is also possible, and the MIDI sound source unit 13
The audio signal from 0 may be directly output to the outside.

(D) The mechanism for detecting poor reception can be changed in various ways. For example, a decrease in the reception level of the antenna may be detected.

===== Second Mode ===== <<<< Example 1 >>>> In the satellite broadcast receiving / reproducing apparatus of the present invention, an audio signal is generated during normal reception and during poor reception of broadcast radio waves. The playback operation is completely different. As a block diagram, the delay accumulation memory is connected to the CPU bus 20 in the above-mentioned conventional FIG. This delay storage memory is composed of RAM.

During normal reception, a real-time audio signal is output to the outside by an operation similar to that of the conventional apparatus of FIG. Further, in parallel with this operation, the MPE obtained from the demultiplexing unit 50.
The G2 audio stream is written in the RAM while being sequentially updated for the latest fixed time (for example, 10 minutes).

When the reception failure occurs, the real-time audio signal output operation and the RAM writing operation are stopped. This is because even if a poorly received audio stream is written, it cannot be used later. At the same time, RAM
Read an audio stream from. The order of reading is sequentially from the oldest one (for example, 10 minutes ago) to the one recorded immediately before. The read audio stream is decoded and an audio signal is output. The method of this decoding output is the same as in the case of real-time reproduction. Even if reception failure occurs due to this read / playback operation, it is possible to avoid a state where the audio output is interrupted. The method and operation for detecting the poor reception state are the same as those in the first embodiment described above.
The control unit 10 monitors the input of the E-ID to detect the poor reception state.

A specific operation of reading the audio stream from the RAM will be described. As the address to start reading, an appropriate packet immediately after the address in which the writing is stopped due to the poor reception state is set. The packet immediately before the writing is stopped should have stored a packet with poor reception. On the other hand, the oldest recorded packet (for example, received 10 minutes ago) is stored after the stopped address, and the packet is read from this packet and reproduced. That is, the packet at the start of reading was voice output 10 minutes ago. For example, in the case of a certain music being played 10 minutes before the broadcast, if a poor reception occurs, the audio signal being output 10 minutes before will be replaced with the audio signal being output so far. Will be output again suddenly. It is undeniable that hearing this from a speaker causes a feeling of strangeness.

One means for solving the problem of discomfort will be described. The address at the moment when writing is stopped due to poor reception is stored. Reading and reproduction are started from a packet (for example, one second before the stop of writing) which is appropriately traced back from the address written up to immediately before. At this time, start while fading out. Then, when the packet after the last address (the one received and recorded 10 minutes before) is reached, it is reproduced while fading in. That is, at the moment when the reception failure occurs, the audio signal of one second before being reproduced and output in real time is repeatedly output again while fading out, and the audio signal of ten minutes before fades in. This will reduce discomfort.

Next, the case where the poor reception state is recovered and the state is recovered will be described. When the normal reception state is restored, the operation of reading the audio stream from the RAM and reproducing and outputting the audio stream is immediately stopped. At the same time, a real-time audio signal output operation and a RAM writing operation are started. The method of detecting the recovery of the reception state is the same as in the first embodiment described above, and the recovery is detected by counting the number of times the SERVICE-ID is detected.

<<<< Second Embodiment >>>> A second embodiment will be described as a means for more effectively solving the above-described uncomfortable feeling in the first embodiment. The parts other than the means for solving the discomfort are the same as those in the first embodiment. The different points will be mainly described. First, when a song is digitally broadcast from the broadcasting station side, an audio packet group for each song is included. In addition, in the audio packet group that constitutes each music data, data indicating the start of the performance is attached to the head data packet, and data indicating the end of the performance is attached to the last data packet. The performance section is specified by these start and end data.

FIG. 6 shows a satellite broadcast receiving / reproducing apparatus according to the second embodiment. RAM as the delay memory in the first embodiment
In multiple music storage units 1 to n (n is an integer of 2 or more)
Secure. A recording completion flag, which will be described later, is provided in each of the music storage units 1 to n. During normal reception, music data for one song is recorded in each of the song storage units 1 to n. Among the limited number of music storage units 1 to n, the oldest music data is recorded and the latest one is overwritten and updated. Every time the control unit 10 monitors the data stream separated from the demultiplexing unit 50 and detects the data of the performance start, the audio stream from that point is overwritten from the top address of the music storage unit. At this time, the recording completion flag is cleared. When the performance end data is detected, a predetermined termination code is written to complete the music data write, and the detection of the next performance start data is awaited. When the writing is completed, the recording completion flag is set.

When the reception failure occurs, the music data is read from any of the music storage units 1 to n and the reproduced music signal is output. At this time, one of the music storage units 1 to n to be read selects one of which the recording completion flag is set. If the termination code is read without recovering the reception state during the process of reading and reproducing music data, the music data is read from another music storage unit 1-n (recording completion flag is already set). To play.

*** Another specific example of performance section *** When broadcasting a performance of one music on the broadcast side, the corresponding music IDs are continuously multiplexed from the start to the end of the performance. The detection of the start of the performance is judged by starting to detect a new music ID, and the detection of the end of the performance is judged by stopping the music ID or starting to detect another new music ID. The performance section is specified by monitoring the reproduced voice level of the received music data. When the voice level exceeds a certain level, it is determined that the performance is started, and when the state of being attenuated below the certain level continues for a predetermined time or more, it is determined that the performance is finished. A song with a silent part in the song is judged to be a different song before and after that, but there is no problem as a content for audio output during poor reception. Although such a method is a rough method for detecting a performance section, it is not necessary to multiplex data for specifying a performance section in broadcast data.

*** Others *** (b) It is sufficient if the number of music storage units is at least two. The music data is updated alternately during normal reception. When a reception failure occurs, it is considered that the music data being received is currently being written to one of the music storage units. That is, the music data written in this music storage unit is incomplete because it is not recorded until the end. Therefore, the complete music data written in the remaining music storage unit is read and reproduced. On the other hand, if a large number of music storage units are prepared, complete music data can be prepared in abundance.

Further, the storage capacity of each of the music storage units 1 to n for storing one music data may be set to about 5 minutes in which normal music data fits. Depending on the song, it may exceed 15 minutes. For a classical song that exceeds 60 minutes in total, each movement may be regarded as one song. In this case, the start and end data of the performance is multiplexed for each movement, or different song IDs are multiplexed for each movement. However, if the music is not stored in one music storage unit 1-n, the capacity is exhausted, and the music can be recorded up to the middle of the music, the recording completion flag remains cleared, and thus the music is not normally reproduced. However, there is a case where the recording completion flags of all the music storage units 1 to n are cleared and the end of the music data is reproduced without stopping. In this case, when the address of the final portion is reproduced, fade-out processing is performed to make it easier to hear.

(B) When the power is turned on or the receiving channel is switched, the music data is immediately written even in the middle of the music without detecting the performance start data. At this time, even if the reception failure occurs immediately after the power is turned on or the channel is switched, the music data written up to immediately before is reproduced and output. This avoids going into silence. Also in this case, the recording completion flags of all the music storage units 1 to n are cleared, and the incomplete music data is reproduced unavoidably.

(C) As in the case of (b) above, when music data is not completely recorded from the start to the end of the performance in any of the music storage units 1 to n, it is incomplete at the time of poor reception. Music data will be reproduced and output to avoid silence. At this time, the address at the moment when writing is stopped due to poor reception is stored. Based on this address, the music data that has been received and recorded until immediately before is faded out and started to be reproduced, and the fade-in is performed from the head address of the music data or another music data. This makes it possible to appropriately perform a read operation that is easy to hear.

(D) As a method of selecting the music storage units 1 to n to be overwritten and updated among the plurality of music storage units 1 to n,
In addition to the method of determining the order in advance and updating in the order, it may be selected at random. That is, in the case of random selection, the music data is recorded in the randomly selected music storage units 1 to n while performing the writing operation in the order of broadcasting. As a result, the music data played at the time of poor reception can be made irrelevant to the order in which it was broadcast, and as a result, recording and playback can be skipped from among the songs being broadcast until the poor reception. The effect is obtained.

(E) The mechanism for detecting poor reception can be changed in various ways. For example, a decrease in the reception level of the antenna may be detected.

(F) SERVICE-ID cannot be detected even when the power of the receiving / reproducing apparatus is turned off. At this time, there may be a case where it is desired to avoid receiving a voice signal based on music data as an external output because the SERVICE-ID cannot be detected and the reception is considered to be poor. In this case, the presence or absence of the input level of the ID-CLOCK signal of the ID output signals is monitored. If this is not the case, it is considered that the power supply of the reception / reproduction device is off, and the reception failure detection operation is not performed. On the other hand, even when real-time playback audio cannot be obtained because the power of the receiving / playback device is off, R
If you want to reproduce and output the music data recorded in AM,
The ID-CLOCK signal is ignored and the reception failure detection operation can be executed.

<< Embodiment 3 >> A mode in which an audio output switching device 200 as shown in the block circuit diagram of FIG. 7 is externally attached to the above-described conventional satellite broadcast receiving / reproducing apparatus (see FIG. 1). explain. The audio output switcher 200 is provided with the characteristic function of the receiving and reproducing apparatus in the first and second embodiments. In this case, only the real-time audio signal (IRD audio) being received can be obtained from the external audio output of the connected receiving and reproducing apparatus. In other words, this voice output switch 200 is
It relays and outputs a real-time audio signal (IRD audio input) from the reception / reproduction device. In addition, in parallel with this relay operation, the audio stream is sequentially written into the RAM 210c for the latest fixed time. When the reception failure occurs, the real-time voice output operation and writing operation are stopped. At the same time, it reads the audio stream from the RAM 210c, decodes it, and outputs an audio signal.
The operation of reading and writing the audio stream is the same as that in the second embodiment.

The configuration and operation of the voice output switch 200 will be described with reference to FIG. The control unit 210 has a CPU 21.
0a, ROM 210b and RAM 210c, and controls the operation of the audio output switcher 200 in a unified manner.
The control unit 210 includes a high-speed digital interface unit 23.
0, operation / display panel section 220, MPEG2 decoding section 270, audio control section 280, and audio signal switching section 250 are connected. The configuration of the RAM 210c is the same as that of the music storage units 1 to n shown in FIG. The audio signal switching unit 250 is composed of a well-known semiconductor switch.

The number of the channel being received by the receiving / reproducing apparatus is displayed on the operation / display panel section 220. operation/
The control unit 210 executes a predetermined operation according to the operation input received by the display panel unit 220. The high-speed digital interface unit 230 is connected to a high-speed digital interface unit on the receiving and reproducing apparatus side via a predetermined cable,
The descrambled transport data and the ID output signal are input. The above-mentioned audio stream is extracted from this transport data. Further, the ID output signal is input to the control unit 210. The controller 210 controls the input of the SERVICE-ID included in the ID-DATA signal.
To detect a poor reception state. SERVI
The method of detecting the poor reception state by monitoring the CE-ID is the same as in the case of the first embodiment described above.

When the poor reception state is detected, the control unit 210
Reads out predetermined music data from the RAM 210c. This music data is decoded into an audio signal by the MPEG2 decoding unit 270 and output to the audio signal switching unit 250 via the audio control unit 280. At this time, the music data is written / read based on the performance section data as in the second embodiment. At the same time, the audio signal switching unit 250 is switched to use the external output as the audio signal from the audio control unit 280.

When the normal reception state is restored by recovering from the poor reception state, the audio signal switching section 250 is immediately actuated to switch the external output to the real-time reproduced voice from the receiving / reproducing apparatus and read / reproduce the music data. Abort. The method of detecting the recovery of the reception state is the same as in the case of the first embodiment described above.

As described above, in addition to recording a voice signal highly efficient coded in the MPEG2 standard in the audio stream and decoding and reproducing it in the MPEG2 decoding section 270, the decoded IRD voice input signal is recorded in the P stream.
It may be digitally recorded in a format such as CM. In this case M
The PEG2 decoding unit 270 can be omitted. If the audio signal to be switched and output is analog, an AD converter and D
A converter is required.

===== Third Mode ===== When the poor reception condition is prolonged, or when the poor reception condition frequently occurs in a heavy snowfall area, the MIDI data or the recorded data in the first and second forms described above is recorded. The user gets tired of repeatedly reproducing the voice of the music. This is because MIDI data and recorded music are recorded in a memory with a limited capacity, and there are limits to the types. Therefore, the above-mentioned first
In the second embodiment, the audio signal input system is increased by another and the audio signal switching unit outputs the audio signals. This other input system is a spare input system here. It is also possible to adopt a configuration in which a plurality of auxiliary voice input systems are provided. An output signal from an external audio reproducing device such as a CD player is supplied to this input system.

First, the audio output switch 200 of the first embodiment will be described. As shown in FIG. 3, the preliminary audio input system is connected to the audio signal switching unit 250. The genre selection switch 260 is provided with a switch for switching the external output to the preliminary input voice. Alternatively, the operation / display panel unit 22
The operation input is accepted from 0 and the external audio output is switched to the auxiliary audio. There are three types of audio output in this example, and they can be switched to any one of received broadcast audio, audio from the MIDI sound source unit 240, and preliminary input audio. When the external audio reproducing device is a CD player, the CD audio will not be interrupted by setting the repeat reproducing mode.

The switching to the preliminary input voice can be performed during the output of the voice signal by the MIDI data in the poor reception state. Alternatively, the preset input voice may be externally output from the beginning when it is preset and falls into a poor reception state. Further, when the input level of the preliminary voice is detected and an input is made, the output mode of the preliminary voice may be automatically set. In addition, it should be possible to switch to the standby voice not only during poor reception but also during normal reception.

A well-known audio output device other than the CD player can be used as the source of the preliminary audio input. Audio output from various terrestrial broadcasting including radio and cable broadcasting receivers is also available. The voice output by these voice output devices is started by the user's operation in advance. Alternatively, a control signal output system to the remote control terminal of the audio output device is provided in the audio output switcher 200, and the control unit 210 controls the audio output device in response to the switching to the preliminary input audio and outputs the audio. May be started.

Next, the receiving / reproducing apparatus 100 of the first embodiment will be described. As shown in FIG. 5, the standby audio input system is connected to the audio signal switching unit 140. There are three types of audio output in this example, and they can be switched to any one of the received broadcast audio, the audio from the MIDI sound source unit 130, and the preliminary input audio. Upon receiving an operation input from the operation input unit 120, the sound output to the outside is switched to the preliminary sound. In addition to this, the matters relating to this auxiliary voice input system are shown in FIG.
This is the same as the case of the voice output switching device 200.

Next, the receiving / reproducing apparatus 100 of Examples 1 and 2 in the second mode will be described. As shown in FIG. 8 according to the second embodiment, the preliminary audio input system is connected to the audio signal switching unit 140. In the case of FIG. 1 of the first embodiment as well, as in the case of FIG. 8, the preliminary input voice and the voice signal of the voice control unit 70a can be switched and output from the voice signal switching unit 140. There are three types of audio output in this example, and any one of received broadcast audio, audio stream of delay storage memory, reproduced audio of music data in the music storage units 1 to n, and preliminary input audio can be switched. Operation input unit 12
The operation input is accepted from 0 and the external audio output is switched to the auxiliary audio. The switching to the preliminary input sound can be performed while the reproduction sound is output from the audio stream or music data from the RAM in the poor reception state. In addition to this, the matters relating to this auxiliary voice input system are shown in FIG.
This is the same as the case of the voice output switching device 200.

Next, the audio output switching device 200 of the third embodiment in the second mode will be described. As shown in FIG.
The standby voice input system is connected to the voice signal switching unit 250. There are three types of audio output in this example, and any one of received broadcast audio, audio stream of delay storage memory, reproduced audio of music data in the music storage units 1 to n, and preliminary input audio can be switched. An operation input is received from the operation / display panel unit 220, and the audio output to the outside is switched to the auxiliary audio. This switching to the preliminary input voice can be performed during the reception failure state while outputting the reproduced voice signal of the audio stream of the delay accumulation memory or the music data of the music storage units 1 to n. In addition to the above, the matters relating to the auxiliary voice input system are the voice output switching device 200 of FIG.
It is similar to the case of.

In the first to third embodiments described above, assuming that the amplifier 300 is provided with a digital audio input terminal, correspondingly, the audio output switching device 200 side corresponds to the digital audio signal. May be switched and output. High-quality music can be played.

[0060]

As described above, when the audio signal is generated by the synthesizer when the audio signal cannot be obtained from the broadcast radio wave due to the poor reception condition, the music can be continuously output from the speaker.

The audio signal generated at this time is based on music data of the synthesizer control system, not the actually recorded music. Therefore, the memory for storing the music data has a relatively small capacity and can be miniaturized.

The music data of the synthesizer control system is divided into genres, and if this genre can be designated or the genre is suitable for the music program that has been received until then, the music played from the speaker in the poor reception state will be , It can be made to be the same as the one that was flowing until then.

Further, when the audio data cannot be obtained from the broadcast radio wave due to the poor reception state, if the audio data read from the recording means is reproduced and output, the audio for the fixed time which has been received and output until immediately before. The data is stored, read out, and reproduced and output. For this reason, the voice immediately before the poor reception is output again, and the voice output can be continued without feeling awkward. If the music data recorded in all the performance sections is selectively reproduced during the detection of the poor reception state, the completely recorded music data can be reproduced and output from the start to the end of the performance, and the incomplete recording No need to play music data. This makes it possible to output audio with less discomfort. Further, even when the poor reception state is prolonged or frequently falls into a poor reception state such as a heavy snowfall area, the sound from the external device can be output through the auxiliary sound input terminal. Therefore, a variety of timeless sounds can be output to the outside.

Not only in bad weather, but also when the direction of the antenna is deviated or the receiving / reproducing apparatus malfunctions and an audio signal cannot be obtained from the received radio wave, the above effect can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of a satellite broadcast receiving / reproducing apparatus common to a conventional example and a first embodiment of a second mode of the present invention.

FIG. 2 is a system configuration diagram using a voice output switching device according to the present invention.

FIG. 3 is a block diagram of an audio output switcher according to the first and third aspects of the present invention.

FIG. 4 is an external view of an audio output switcher according to the present invention, in which (a) is a front view and (b) is a rear view.

FIG. 5 is a block diagram of a satellite broadcast receiving / reproducing apparatus according to the first and third aspects of the present invention.

FIG. 6 is a block diagram of a satellite broadcast receiving / reproducing apparatus in Example 2 of the second mode of the present invention.

FIG. 7 is a block diagram of a third embodiment of the second mode of the present invention and an audio output switcher in the third mode.

FIG. 8 is a block diagram of a satellite broadcast reception / reproduction device according to a third embodiment of the present invention.

[Explanation of symbols]

10 Control unit 20 CPU bus 30 Tuning section 40 Demodulator 50 demultiplexer 60 MPEG2 decoding section 70a voice control unit 70b Video control unit 80 High-speed digital interface section 90 IC card IF section 100 Satellite Broadcast Receiving / Reproducing Device 110 modem 120 Operation input section 130 MIDI sound source section 140 audio signal switching unit 200 audio output switch 210 control unit 210a CPU 210b ROM 210c RAM 220 Operation / display panel section 220a display 220b switch group 230 High-speed digital interface section 230a Data input terminal 240 MIDI sound source section 250 audio signal switching unit 250a voice input terminal 250b audio output terminal 260 genre selection switch 270 MPEG2 decoding unit 280 Voice control unit 300 amp 400 speakers 500 TV monitor

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinji Sakurai             5-5-26 Kitashinagawa, Shinagawa-ku, Tokyo Co., Ltd.             Inside Daiichi Kosho F-term (reference) 5D045 DA00                 5D378 QQ05 QQ11 QQ38                 5K061 AA03 BB06 BB10 CC45 JJ07

Claims (13)

[Claims] 1. A voice output switcher for relaying a voice signal from an external satellite broadcast receiving / reproducing apparatus to an external audio device, the first input terminal connected to a high-speed digital interface terminal of the satellite broadcast receiving / reproducing apparatus. , A high-efficiency compression-encoded music data in a casing equipped with a second input terminal connected to the audio output terminal of the satellite broadcast receiving and reproducing apparatus, and an output terminal for outputting an audio signal to the audio device. Music data storage means that stores the data, a decoding / reproduction means that decodes the music data that has been encoded with high efficiency compression and reproduces an audio signal, and a reproduction control that reads the music data from the storage means and reproduces the music by the decoding / reproduction means. Means, and a switch for outputting either the audio signal A input to the second input terminal or the audio signal B output from the decoding / reproducing means from the output terminal. And a reception failure detecting means for detecting that the satellite broadcast receiving and reproducing apparatus is in a reception failure state based on a signal input to the first input terminal, and switching in response to the detection signal of the reception failure detecting means. Switching control means for controlling the circuit and outputting the audio signal A from the output terminal during the period when the poor reception is detected and the audio signal B during the period when the poor reception is detected are mounted. Audio output switch. 2. A first user interface means for selecting a reproduction music piece in the poor reception state, wherein the reproduction control means reads the music data designated by the first user interface means from the storage means in the poor reception state. The audio output switching device according to claim 1, wherein the audio output switching device reproduces. 3. A second user interface means for instructing to forcibly output the stored music, and when there is a command input by the second user interface means, the switching control means outputs the audio signal B to the output terminal. The audio output switching device according to claim 1, wherein the audio output switching device outputs the audio output from the audio output switching device. 4. The second user interface means specifies a song to be played.
The audio output switch described in. 5. A music selection information storage means for extracting music selection information from a signal input to the first input terminal and updating it and storing it, wherein the reproduction control means stores the music information in the music selection information storage means in a poor reception state. 5. The corresponding music data is read out from the storage means and reproduced.
The audio output switching device according to any one of 1. 6. A means for extracting highly efficient compression-encoded music data from a signal input to the first input terminal and storing the music data in a storage means, wherein the reproduction control means has the music data stored by this means. 6. The audio output switching device according to claim 1, wherein: 7. An auxiliary audio input terminal and a third user interface means for setting the validity / invalidity of the auxiliary audio input terminal, wherein the switching circuit comprises an audio signal C input to the auxiliary audio input terminal.
Is output from the output terminal, and the switching control circuit outputs the audio signal C from the output terminal during a period in which reception failure is detected when the switching control circuit is set to be valid by the third user interface means. The audio output switching device according to any one of claims 1 to 7, characterized in that: 8. A fourth user interface means for instructing to forcibly output the audio signal C input to the auxiliary audio input terminal, and switching control means when there is an instruction input by the fourth user interface means. The audio output switch according to claim 1, wherein the audio signal C is output from the output terminal. 9. A music data storage means for storing music data encoded by high efficiency compression coding, a decoding reproduction means for decoding the music data encoded by high efficiency compression coding and reproducing an audio signal, and music from the storage means. Reproduction control means for reading data and reproducing music by the decoding / reproducing means, and switching for outputting either the audio signal A input to the second input terminal or the audio signal B output from the decoding / reproducing means from the output terminal. A circuit, a reception failure detection means for detecting a reception failure state based on a received signal, a first user interface means for selecting a reproduction song in the reception failure state, and a reception failure state detected The music data specified by the first user interface means from the music data stored in the storage means, the music selection means for reproducing the music data. A first switching circuit that controls the switching circuit in response to the detection signal of the reception failure detecting means to output the audio signal A from the output terminal while the reception failure is detected and the audio signal B when the reception failure is detected. Control means, second user interface means for instructing to forcibly output the accumulated music, and second switching control means for outputting the audio signal B from the output terminal when a command is input by the second user interface means. And a satellite broadcast receiving / reproducing apparatus comprising: 10. The satellite broadcast receiving / reproducing apparatus according to claim 9, wherein the second user interface means specifies a song to be played. 11. A music selection information storage means for extracting music selection information from a received reproduction signal and updating and storing the music selection information, wherein the music selection means reproduces music data corresponding to the storage information of the music selection information storage means in a poor reception state. The satellite broadcast receiving / reproducing apparatus according to claim 9 or 10, wherein the satellite broadcasting receiving / reproducing apparatus is adapted to reproduce. 12. A structure for replacing the first user interface means with music selection information storage means for extracting music selection information from a received reproduction signal and storing it while updating it, and in a poor reception state, the music selection means stores the music selection information storage means. 11. The satellite broadcast receiving / reproducing apparatus according to claim 9, wherein the reproduction control means reproduces the music data corresponding to the stored information. 13. A means for extracting highly efficient compression-encoded music data from a received reproduction signal and storing the music data in a storage means, and the reproduction control means sets the music data stored by this means as a processing target. 9. The method according to claim 9, wherein
The satellite broadcast receiving and reproducing apparatus according to any one of 1.