JP5276398B2 - Information equipment and program - Google Patents

Description

The present invention relates to an information device that receives a digital broadcast, and more particularly to pseudo speedup of channel switching.

  A certain period of time is required for channel switching of digital broadcasting. This is because, normally, before data decoding, data is once buffered and decoded. However, when switching channels, the buffered data (data before channel switching) is discarded, and a new This is because channel data is buffered.

  The time required for such switching is very troublesome for the viewer, and makes it particularly annoying when zapping to find a desired program.

  Here, while having two tuners and receiving the broadcast of the broadcast station which is one tuner, the other tuner buffers the program of another broadcast channel, and there is a channel switching. Japanese Patent Application Laid-Open No. 2004-228688 discloses a digital broadcast receiver that immediately outputs buffered video when a buffered channel is selected.

JP 2006-67599 A

  However, in the technique described in Patent Document 1, it is necessary to provide a receiver with a plurality of tuners, and this technique cannot be adopted in a receiver having only one tuner.

  Therefore, the present invention provides an information device capable of receiving a digital broadcast that can reduce the annoyance of waiting time for channel switching, even if the information device receives a digital broadcast having only one tuner. The purpose is to provide.

The information device capable of receiving the first digital broadcast of the present invention has a tuner, a frame buffer is constructed for at least one frame of the program of the channel being received , the channel number is set, the program title and the buffer The buffer stored in the buffer information table in which the number is a column and stored in the buffer number column in the buffer information table is excluded from the overwriting target, and the tuner uses the When an instruction to switch from the first channel to the second channel is given by the viewer, the row of the second channel number is referenced from the buffer information table, and the program title and buffer number are stored in the column of the buffer information table. If it is stored, it is determined that there is a switching image, and the program title stored in the buffer information table is determined. And program title of the second channel is determined whether or not the same program as, if it is determined that the same program, prior to display of the actual program of the second channel, the switching allowance A switching proxy image corresponding to the buffer number excluded from the overwriting object from the buffer information table is displayed as an image.

The information device capable of receiving the second digital broadcast according to the present invention has a tuner, a frame buffer for at least one frame of the program of the received channel , a channel number, a program title and a buffer number. The buffer stored in the buffer information column stored in the buffer information table as a column and stored in the buffer number column in the buffer information table is excluded from the overwriting target and stored by the tuner and the tuner. When an instruction to switch from the first channel to the second channel is given by the viewer, the row of the second channel number is referenced from the buffer information table, and the program title and buffer number are stored in the column of the buffer information table. If stored, the means for determining that there is a switching image and the buffer information table are stored. Means for the program title and program title of said second channel is to determine whether the same program, if it is determined that the same program, the display of the actual program of the second channel Prior to the above, a control means for displaying a switching proxy image corresponding to a buffer number excluded from the overwriting object from the buffer information table as the switching proxy image is provided.

In the program of the present invention, a frame buffer is constructed in a computer of an information device having a tuner capable of receiving a digital broadcast, and at least one frame of a program of a channel being received , a channel number is set, a program title and a buffer stores the number in the memory buffer information table is stored for a column, the buffer stored in the column of the buffer number in the buffer information table, the process of storing removed from overwrite target, by the tuner When an instruction to switch from the first channel to the second channel is given by the viewer, the row of the second channel number is referenced from the buffer information table, and the program title and buffer number are displayed in the buffer information table column. Is stored, the process for determining that there is a switching image, and A process is stored in the file information table was the program title and the program title of the second channel to determine whether the same program, if it is determined that the same program, the actual second channel Prior to the display of the program, a process of displaying a switching proxy image corresponding to the buffer number excluded from the overwriting object from the buffer information table as the switching proxy image is realized. To do.

  ADVANTAGE OF THE INVENTION According to this invention, the information equipment which can receive the digital broadcast which can reduce the troublesome waiting time of the switching of a channel can be provided.

  The best mode for carrying out the present invention will be described below with reference to the drawings. First, the outline of the embodiment of the present invention will be briefly described. An information device capable of receiving digital broadcasting according to the present embodiment has one tuner, and when a channel is received, At least one frame is stored. When a channel switching instruction is received from the viewer, the stored frame (group) of the channel is displayed prior to the actual program display. It should be noted that the present invention is more effective if the frame is displayed only when the stored program information of the frame matches the program information of the actual program.

  Here, the program information is EIT (Event Information Table) [Schedule] or EIT [p / f (present / follow)] defined in the ARIB standard of digital broadcasting. In EIT [schedule], information such as a program title and a broadcast time is shown, and information for several days is shown. EIT [p / f] is program information transmitted in synchronization with the distribution of the program, and EIT [p / f] has information on the current program, such as the title of the program, and information on the next program. It is shown. Details will be described below.

  FIG. 1 is a configuration diagram of an information device according to the present embodiment. Referring to FIG. 1, the information device 10 includes a tuner 11 that receives TS data, a channel analysis unit 12, a decoding processing unit 13, a memory 14, and a display control unit 15. In the memory 14, a frame buffer 16 is constructed and a buffer information table is stored. The display control unit 15 has a switching control unit 17. The switching control unit 17 executes a predetermined program.

  Next, the operation of the information device 10 according to the present embodiment will be described.

  FIG. 2 is a flowchart for explaining the operation of the information device 10 according to the present embodiment.

  Referring to FIG. 2, when the user performs a channel switching operation (step S1), the tuner 11 switches received broadcast TS data.

  And the channel analysis part 12 analyzes SI part in TS data, and detects channel switching. Further, the channel analysis unit 12 acquires the program title from the channel number and EIT data from the data, and notifies these to the switching control unit 17 (step S2).

  The switching control unit 17 refers to the notified channel number row in the buffer information table, an example of which is shown in FIG. 3, and when the program title and buffer number are stored in the table, there is a switching proxy image. (Step S3).

  If it is determined in step S3 that there is a switching image, the switching control unit 17 compares the program title stored in the buffer information table with the program title notified from the channel analysis unit. That is, it is determined whether or not they are the same program (step S4).

  If it is determined in step S4 that the programs are the same, the display control unit 15 under the control of the switching control unit 17 displays the image (video) of the buffer number as a switching proxy image (video) until the program reproduction starts. It is displayed on the display (step S5).

  On the other hand, if it is determined in step S4 that the programs are not the same, the image for switching is old and the image is deleted from the frame buffer. Specifically, the data of the corresponding channel row in the buffer information table is initialized (step S6).

  As soon as sufficient data for reproducing the moving image can be stored in the memory 14, the display control unit 15 starts reproducing the moving image. That is, the switching control unit 17 controls the display control unit 15 to reproduce a moving image instead of the switching proxy image (step S7).

  During playback of a moving image, the switching control unit 17 constantly updates and stores the notified program title and the latest buffer number displayed during playback in the row of the channel number currently being viewed in the buffer information table.

  In addition, briefly explaining the relationship between the video playback and the buffer information table, generally, the frame buffer for storing the image generated by the decoding processing unit is limited, and during video playback, the newly decoded image is The oldest buffer that has already been displayed is overwritten, and the buffer is reused. In this embodiment, a buffer information table is created, and the buffer stored in the buffer number column in the table is not overwritten at the time of decoding, and is removed from the order of buffer reuse. As a result, the above-described switching proxy image is maintained without being erased in the buffer. By controlling in this way, at the time of channel switching, the switching control unit 17 can obtain and display the buffer number of the switching proxy image by referring to the buffer information table. A method of copying and storing in a memory different from the buffer is also conceivable.

  As described above, in the information device according to the present embodiment, even if the user has a single tuner, when the channel is switched, a switching image is displayed prior to the actual program. Since the substitute image is the same program as the desired channel, it contributes to easily grasping the currently broadcast program when the user performs zapping or the like.

  In other words, the information device according to the present embodiment enables visual content grasp of the switching destination channel program content as much as possible during the digital broadcast channel switching standby time, and contributes to obtaining the same effect as improving the channel switching response. Can do.

1 is a configuration diagram of an information device 10. FIG. 4 is a flowchart for explaining the operation of the information device 10. It is an example of a buffer information table.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Information apparatus 11 Tuner 12 Channel analysis part 13 Decoding process part 14 Memory 15 Display control part 16 Frame buffer 17 Switching control part

Claims (6)

A tuner having a tuner and storing at least one frame of a program of a received channel in a memory in which a frame buffer is constructed, and a buffer information table having a channel number as a row and a program title and a buffer number as a column is stored. The buffer stored in the buffer number column in the buffer information table is excluded from the overwriting target,
When the viewer gives an instruction to switch from the first channel to the second channel by the tuner, the row of the second channel number is referenced from the buffer information table, and the program title is displayed in the column of the buffer information table. When the buffer number is stored, it is determined that there is a switching image, and it is determined whether the program title stored in the buffer information table and the program title of the second channel are the same program, If it is determined that the programs are the same , prior to the display of the actual program of the second channel , the switching number corresponds to the buffer number excluded from the overwriting target in the buffer information table. An information device capable of receiving digital broadcasting, characterized by displaying a switching image to be displayed.   2. The frame is displayed when the stored program information of the frame of the second channel is the same as the program information of the actual program of the second channel. Information equipment.   The information apparatus according to claim 2, wherein the program information is an EIT (Event Information Table). Tuner,
At least one frame of the program of the channel being received is stored in a memory in which a frame buffer is constructed , a buffer information table having a channel number as a row, a program title and a buffer number as a column is stored, and the buffer information The buffer stored in the buffer number column in the table is stored as a storage unit that is excluded from the overwriting target ,
When the viewer gives an instruction to switch from the first channel to the second channel by the tuner, the row of the second channel number is referenced from the buffer information table, and the program title is displayed in the column of the buffer information table. When the buffer number is stored, means for determining that there is a switching image,
Means for determining whether or not the program title stored in the buffer information table and the program title of the second channel are the same program;
If it is determined that the programs are the same , prior to the display of the actual program of the second channel , the switching number corresponds to the buffer number excluded from the overwriting target in the buffer information table. An information device capable of receiving a digital broadcast, comprising: a control means for displaying a switching image to be displayed.   A determination means for determining whether or not the stored program information of the frame of the second channel is the same as the program information of the actual program of the second channel; The information device according to claim 4, wherein: To computer of information equipment having tuner that can receive digital broadcast,
At least one frame of the program of the channel being received is stored in a memory in which a frame buffer is constructed , a buffer information table having a channel number as a row, a program title and a buffer number as a column is stored, and the buffer information buffers stored in the column of the buffer number in the table, a processing of storing removed from overwrite target,
When the viewer gives an instruction to switch from the first channel to the second channel by the tuner, the row of the second channel number is referenced from the buffer information table, and the program title is displayed in the column of the buffer information table. When the buffer number is saved, a process for determining that there is a switching image,
A process of determining whether or not the program title stored in the buffer information table and the program title of the second channel are the same program;
If it is determined that the programs are the same , prior to the display of the actual program of the second channel , the switching number corresponds to the buffer number excluded from the overwriting target in the buffer information table. Processing to display the switching image to be
A program to realize

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