JP2006186443A - Television receiver and control program for the television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver capable of automatically selecting a sub channel desired by a user, when the main channels of High Vision broadcast programs are switched into a plurality of sub-channels of standard broadcast programs. <P>SOLUTION: When the main channel of high vision broadcast program selected and viewed is switched into a plurality of sub channels of standard broadcast programs, a CPU 8 analyzes the viewing times of the broadcast programs of the selected channels and selects one of the sub channels of the standard broadcast program from among a plurality of the sub channels, according to the history of the result of the analysis. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a television receiver that receives terrestrial digital broadcasting and a control program for the television receiver.

  In terrestrial digital broadcasting, which began broadcasting in some areas from December 2003, multiple types of information are multiplexed with the transport stream of the MPEG-2 system by the OFDM (Orthogonal Frequency Division Multiplexing) method, The 6 MHz band is divided into 13 segments for transmission. Furthermore, it is planned that a plurality of standard broadcasts can be performed by 3 segments out of 13 segments. Therefore, when sports broadcasts such as professional baseball and soccer on the main channel by high-definition broadcasting are extended, the main channel is switched to standard broadcasting on multiple subchannels, and sports broadcasting is extended on one subchannel. In addition, a service for broadcasting a program originally scheduled on another subchannel is planned. For this reason, when the main channel is switched to a plurality of subchannels, the user performs an operation of selecting one subchannel desired to be viewed. For this reason, proposals have been made for viewing a desired program without performing a channel selection operation.

In a proposed digital broadcast receiver and its control method, it is a high-definition broadcast of one main channel based on a packet ID in a transport stream obtained by demodulating a received digital broadcast signal, or a plurality of A configuration is disclosed in which it is determined whether the broadcast is a standard broadcast of a subchannel, and when it is determined that the broadcast is a standard broadcast of a plurality of subchannels, a subchannel set and input in advance is selected. (See Patent Document 1)
JP 11-355225 A

However, even if the subchannel to be selected is set and input in advance as in Patent Document 1, if the time schedule of the program is changed for an unexpected reason, the subchannel that is set and input is selected. I can't. For example, it can be expected that sports broadcast programs such as professional baseball and soccer will be extended. However, even if the initial time schedule ends, it is possible to set in advance so that the extended program can be watched continuously. When a program that normally ends at 6:00 pm, such as a large sumo broadcast, is extended due to several unexpected sumo with water, the sumo relay is extended and broadcast. The channel cannot be preset.
The present invention is to solve such a conventional problem, and can automatically select a desired subchannel when the main channel of high-definition broadcasting is switched to a plurality of subchannels of standard broadcasting. The purpose is to do so.

  The television receiver according to claim 1 is a first channel selection unit that selects one main channel or one subchannel from a plurality of main channels or subchannels to be received in accordance with a channel selection signal input by an operation. Means (corresponding to the CPU 8 in FIG. 1 in the embodiment) and program analyzing means for analyzing the broadcast program of the channel selected by the first channel selecting means (corresponding to the CPU 8 in FIG. 1 in the embodiment). ), And the main channel selected by the first channel selection means is switched from the high-definition broadcast to the standard broadcast of the plurality of subchannels, the standard broadcast of the plurality of subchannels according to the analysis result by the program analysis means Second channel selection means (actual In the embodiment has a structure having the equivalent to CPU8 in Figure 1), the.

  In the television receiver according to claim 1, as described in claim 2, the program analysis means analyzes the viewing time when the high-definition broadcast before switching to the standard broadcast is selected by the first channel selection means, When the ratio of the viewing time analyzed by the program analysis means is greater than a certain value, the channel selection means of 2 selects a subchannel for subsequently broadcasting the high-definition broadcast program. You may make it the structure which does.

  2. The television receiver according to claim 1, wherein the program analysis means analyzes the user's preference and stores the history of the analysis result in a database for viewers to select the second channel. The means may be configured to select a subchannel having the highest user preference among a plurality of subchannels switched from the high-definition broadcast based on the database.

  4. The television receiver according to claim 3, wherein the program analyzing means analyzes the program name and genre of the program of the channel selected by the first channel selecting means, and according to the analysis result. The database may be updated.

The television receiver control program according to claim 5 is a first program for selecting one main channel or one subchannel in response to a channel selection signal input by operation from a plurality of main channels or subchannels to be received. Step, a second step of analyzing the broadcast program of the channel selected by the first step, and a case where the main channel selected by the first step is switched from a high-definition broadcast to a standard broadcast of a plurality of subchannels. The third step of selecting one subchannel from the standard broadcast of a plurality of subchannels according to the analysis result of the second step is executed.
The first to third steps correspond to the processing of the CPU 8 in FIG. 1 in the embodiment.

  In the control program for a television receiver according to claim 5, as described in claim 6, the second step analyzes the viewing time when the high-definition broadcast before being switched to the standard broadcast is selected by the first step. In the third step, when the ratio of the viewing time analyzed in the second step with respect to the broadcast time of the high-definition broadcast is larger than a certain value, the subchannel for continuously broadcasting the high-definition broadcast program is selected. You may make it the structure which selects.

  In the control program for a television receiver according to claim 5, as described in claim 7, the second step analyzes the user's preference and stores the analysis result history in a database, and the third step includes A configuration may be adopted in which a subchannel having the highest user preference is selected from a plurality of subchannels switched from high-definition broadcasting based on the database.

  8. The control program for a television receiver according to claim 7, wherein, as described in claim 8, the second step analyzes the program name and genre of the program of the channel selected by the first step, and the analysis result The database may be updated according to the situation.

  According to the present invention, when switching from a main channel of high-definition broadcasting to a plurality of sub-channels of standard broadcasting, it is possible to automatically select a desired sub-channel.

Hereinafter, a first embodiment and a second embodiment of a television receiver according to the present invention will be described with reference to FIGS.
FIG. 1 is a block diagram showing an internal configuration of the television receiver 100 in each embodiment. The television receiver 100 has a configuration in which a signal processing system and a control system are connected by a system bus. That is, as shown in FIG. 1, the signal processing system includes an antenna 1, a tuner 2, a demodulation processing unit 3, an audio / video separation unit 4, an audio decoding unit 5, and a video decoding unit 6. It is connected to the. The control system includes a CPU 8, a ROM 9, a RAM 10, and an operation unit 11, and each is connected to the system bus 7.

  In the signal processing system, the tuner 2 selects a digital terrestrial broadcast of one channel from the digital terrestrial broadcast received via the antenna 1, removes the carrier wave, and compresses and encodes an audio signal, a video signal, A digital signal of a transport stream (TS) such as character information is output to the demodulation processing unit 3. The demodulation processing unit 3 branches the digital signal output from the tuner 2 and selectively selects the gate G1, the gate G2, and the digital signal selected by the gate G2 into three digital signals according to the frequency. BPF2a, BPF3b, and BPF3c that are band pass filters, a demodulator 3d that demodulates the digital signal output from the gate G1, and a demodulator 3e that demodulates the digital signal output from the BPF2a, BPF3b, and BPF3c, respectively. Yes. The demodulator 3 d and demodulator 3 e output the demodulated digital signal to the audio / video separator 4. The audio / video separation unit 4 separates the digital signal output from one of the demodulation unit 3d and the demodulation unit 3e into an audio signal and a video signal, and outputs them to the audio decoding unit 5 and the video decoding unit 6, respectively. . The audio decoding unit 5 decodes the audio signal output from the audio / video separation unit 4 and outputs the audio to a speaker (not shown). The video decoding unit 6 decodes the video signal output from the audio / video separation unit 4 and outputs the video to a display (not shown).

  In the control system, the CPU 8 exchanges data and commands with each part of the signal processing system and each part of the control system via the system bus 7 to control the entire television receiver 100. The ROM 9 stores in advance a control program executed by the CPU 8 and initial data. The RAM 10 has an area for temporarily storing various types of data processed by the CPU 8 and an area for various registers, flags, and pointers (variables) necessary for executing the control program. In the state where the power switch of the apparatus is on, the operation unit 11 inputs commands such as on / off of the television switch and channel change to the CPU 8 according to the operation.

Next, regarding the operation of the first embodiment of the television receiver 100 shown in FIG. 1, the flowchart of the CPU 8 shown in FIGS. 2 to 5, the viewing program according to the passage of time shown in FIG. 6, and the display shown in FIG. This will be described based on the display screen.
2 and 3 are flowcharts of the main routine of the CPU 8. In FIG. 2, after predetermined initialization (step SA1), it is determined whether or not the television switch is turned on by operating the operation unit 11 (step SA2). If this switch is not turned on, an EPG (electronic program guide) is determined. ) Is acquired (step SA3). If the TV switch is on, the viewing program is detected (step SA4).

  FIG. 4 is a flowchart of the viewing program detection process. The current time is acquired (step SB1), and the reception channel CH is acquired (step SB2). Then, the program name and broadcast time are acquired from the EPG based on the current time and CH (step SB3). Next, the reception channel viewing time (CH) count is started (step SB4), and the process returns to the main routine. For example, in the viewing program corresponding to the passage of time shown in FIG. 6, when the sumo relay is started from time t1 in the high-definition broadcast of channel 1, when viewing starts from time t1, the elapsed time of channel 1 ( 1) is counted from t1.

  After detecting the viewing program, the transport stream of the viewing program is detected in FIG. 2 (step SA5), and the program is displayed on the high-definition broadcast (HD) by the PSI (program identification information) of the transport stream. It is detected whether there is a standard broadcast (SD) (step SA6). If the viewing program is high-definition broadcast, the gate G1 is turned on and the gate G2 is turned off (step SA7). Therefore, the digital signal output from the tuner 2 of FIG. 1 is supplied to the demodulator 3d through the gate G1.

Next, a flag SF indicating sub-channel viewing is set to 0 (high-vision reception) (step SA8), demodulated by the demodulator 3d, and separated into an audio signal and a video signal by the audio / video separator 4. Then, the audio and video decoded and acquired by the audio decoding unit 5 and the video decoding unit 6 are output (step SA9). Thereafter, it is determined whether or not the channel CH has been changed by the operation of the operation unit 11 (step SA10). When the channel CH has been changed, the reception channel viewing time (CH) count is stopped (step SA). SA11). Then, a channel selection signal is output to the tuner 2 to change the reception frequency (step SA12).
For example, in the viewing program corresponding to the passage of time shown in FIG. 6, when the high-definition broadcast is changed from channel 1 sumo to channel 3 at time t2, counting of the channel viewing time (1) is stopped. Accordingly, the viewing time of (t2-t1) is stored in the channel 1 counter.

  Thereafter, in step SA4, the viewing program of the changed channel is detected. Accordingly, in the viewing program corresponding to the passage of time in FIG. 6, counting of the viewing time (3) of channel 3 is started from time t2. On the other hand, when the channel CH is not changed, it is determined whether or not the TV switch is turned off (step SA13). When this switch operation is performed, the viewing time () of the counted channel is set to 0. (Step SA14), and in step SA2, it is determined whether or not the TV switch is turned on. If the TV switch-off operation is not performed, a transport stream is detected in step SA5.

  When the standard broadcast is detected in step SA6, that is, when the high-definition broadcast is switched to the standard broadcast, the gate G1 in FIG. 1 is turned off and the gate G2 is turned on (step SA15). Therefore, the digital signal output from the tuner 2 passes through the gate G2, and each standard broadcast is frequency-separated by the BPFs 3a, 3b, and 3c, and is supplied to the demodulator 3e. Next, in the flowchart of FIG. 3, it is determined whether or not the flag SF is 0 (step SA16). When switching from the high-definition broadcast to the standard broadcast, the SF is still 0, so the subchannel detection process is executed (step SA17).

  FIG. 5 is a flowchart of the subchannel detection process. The broadcast time of the high-definition broadcast is read from the EPG (step SC1), and the viewing time is acquired (step SC2). For example, in the viewing program corresponding to the passage of time shown in FIG. 6, the broadcast time of the relay of sumo on channel 1 is (t4-t1) from time t1 to time t4. During this broadcast time, another program on channel 3 is viewed at time t2, and channel 1 is viewed again at time t3. Therefore, the viewing time of the sumo relay on channel 1 is the sum of the time (t2-t1) from time t1 to t2 and (t4-t3) from time t3 to t4 {(t2-t1) + (t4 -T3)}.

Next, the ratio of viewing time to broadcast time is calculated (step SC3). That is, the ratio RATIO is calculated by the following arithmetic expression.
RATIO = {(t2-t1) + (t4-t3)} / (t4-t1)
And it is discriminate | determined whether the calculated ratio is larger than a fixed value (step SC4). When the ratio of the viewing time to the broadcast time is larger than a certain value, the process of continuously viewing the subchannel that broadcasts the same program as the high-definition broadcast is performed. That is, the audio / video separation unit 4 is instructed to select a subchannel for broadcasting the program name recorded based on the EPG (step SC5). If the ratio is below a certain value, the audio / video separation unit 4 is instructed to select an arbitrary subchannel (step SC6). For example, the news program of channel 1-1 is selected from the subchannels shown in FIG.

  Note that the demodulator 3e may be instructed to select a subchannel, and only the selected subchannel may be supplied to the audio / video separator 4. In this case, the audio / video separation unit 4 may be a single decoding processing unit. Alternatively, the tuner 2 may be instructed to select a subchannel, and only the selected subchannel may be supplied to the demodulator 3e via the gate G2. In this case, a band-pass filter is not necessary, and the demodulator 3e can be a single circuit.

  In step SC5 or SC6 in FIG. 5, after the subchannel selection is instructed, the name of the program to be broadcast is additionally displayed on the display together with the message “subchannel is present” (step SC7). FIG. 7 is a diagram showing an additional display of subchannel switching on the display when a subchannel is selected in step SC5 of FIG. In the example of FIG. 7, since the sub-channel is selected so that the sumo wrestling broadcast watched in the high-definition broadcast is continuously watched in the standard broadcast, the fact is additionally displayed. After the additional display, the flag DF is set to 1 (additional display on) (step SC8), and the display timer is started (step SC9). Thereafter, the process returns to the main routine of FIG. 3, and the flag SF is set to 1 (standard broadcast) (step SA18).

  After setting SF to 1, it is determined whether or not there is an instruction to change the subchannel by the operation unit 11 (step SA19). When there is a sub-channel change instruction, a channel selection signal is given to the audio / video separation unit 4 to perform sub-channel change processing (step SA20). In addition, the stored viewing time () of each channel is cleared to 0 (step SA21). Next, the message “Channel is changed” and the program name to be broadcast are displayed on the display (step SA22). Then, DF is set to 1 (step SA23), and the display timer is started (step SA24). After this, or when there is no subchannel change instruction in step SA19, the process proceeds to step SA9 in FIG. 1, and the audio and video obtained by decoding by the audio decoding unit 5 and the video decoding unit 6 are output. To do.

  In step SA16 in FIG. 3, if SF is 1, it is determined whether DF is 1 (step SA25). If DF is 1, it is determined whether or not the count value of the display timer started in step SC9 of the subchannel detection process of FIG. 5 has passed a certain value (for example, several seconds) (step SA26). When the predetermined value has elapsed, the display timer is stopped (step SA27), and the additional display is erased (step SA28). Then, DF is reset to 0 (step SA29). Thereafter, in step SA19, it is determined whether or not there is a subchannel change instruction by the operation unit 11.

As described above, according to the first embodiment, when the main channel selected and viewed is switched from the high-definition broadcast to the standard broadcast of a plurality of subchannels, the CPU 8 The viewing time of the broadcast program is analyzed, and one subchannel is selected from standard broadcasts of a plurality of subchannels according to the history of the analysis result. That is, the viewing time of the high-definition broadcast before switching to the standard broadcast is analyzed, and if the ratio of the viewing time to the broadcast time of the high-definition broadcast is greater than a certain value, the high-definition broadcast program is broadcast continuously. Select a subchannel.
Therefore, when the main channel of the high-definition broadcast is switched to a plurality of sub-channels of the standard broadcast, the user can automatically select the desired sub-channel.

  In the first embodiment, the subchannel for broadcasting the program is selected when the ratio of the viewing time to the broadcast time of the high-definition broadcast is larger than a certain value. As an alternative, the sub-channel of the program that has been viewed most frequently in the past several hours may be selected. Or you may make it the structure which selects the subchannel of the program which selected the most frequency | count in the past several hours.

Next, the operation of the second embodiment of the television receiver of the present invention will be described with reference to the flowcharts of the CPU 8 shown in FIGS.
FIGS. 8 and 9 are flowcharts of the main routine of the CPU 8 in the second embodiment, but are the same as the flowcharts of the main routine of the first embodiment shown in FIGS. Therefore, the overlapping description is omitted and different parts will be described. Since the viewing time is not counted in the second embodiment, the processing for clearing the viewing time in step SA11, step SA14 in FIG. 2 and step SA21 in FIG. 3 is deleted in FIGS. However, in the second embodiment, the CPU 8 manages a database (DB) for storing history data of viewing programs for each viewer. For this reason, processing of a flag IF indicating whether or not a viewer ID has been input is added to step SA30 in FIG. Other parts are the same as those in FIGS.

  FIG. 10 is a flowchart of the viewing program detection process in step SA4 of FIG. It is determined whether or not the flag IF is 0 (viewer ID is not set) (step SD1). If IF is 0, it is determined whether or not the viewer ID is input from the operation unit 11 (step SD1). Step SD2). At this time, a screen for prompting the input of the viewer ID may be displayed on the display. When the viewer ID is input, IF is set to 1 (viewer ID setting) (step SD3). After setting IF to 1 or when IF is 1 in step SD1, the current time is acquired (step SD4), and the reception channel CH is acquired (step SD5). Next, program name and program genre data are acquired from the EPG based on the current time and channel CH (step SD6). Then, the viewer database is changed based on the acquired data (step SD7). After updating the database, the process returns to the main routine of FIG. When the TV switch-off is operated in step SA13 in FIG. 8, IF is reset to 0 (step SA30).

  FIG. 11 is a flowchart of the subchannel detection process in step SA17 of FIG. The program name of one subchannel and the genre of the program are acquired from the EPG (step SE1), and the preference is detected by comparison with the viewer database (step SE2). After detecting the preference, it is determined whether or not there is another subchannel (step SE3). If there are other subchannels, the processing of step SE1 and step SE2 is repeated to detect the preference of the subchannel. When the preference of all the subchannels being broadcast is detected, the audio / video separation unit 4 is instructed to select the subchannel with the highest preference (step SE4). Then, the flag DF is set to 1 (additional display) (step SE5), and the display timer is started (step SE6). Thereafter, the process returns to the main routine of FIG.

As described above, according to the second embodiment, the CPU 8 analyzes the viewer database when the main channel selected and viewed is switched from the high-definition broadcast to the standard broadcast of a plurality of subchannels. Then, one subchannel is selected from standard broadcasts of a plurality of subchannels according to the analysis result. That is, by searching the viewer database, analyzing the viewer's preference based on the program name and genre of the program viewed in the past, the viewer's preference is the highest from the standard broadcasting of multiple subchannels. Select a higher subchannel.
Therefore, when the main channel of the high-definition broadcast is switched to a plurality of sub-channels of the standard broadcast, the user can automatically select the desired sub-channel.

  In the second embodiment, the viewer database is updated based on the data acquired according to the program name and genre of the program to be viewed. However, the viewer selects data for updating the database. It may be. Or you may make it the structure which selects the data registered into a database from EPG in the state which is not viewing a program. Or you may make it a structure which updates a viewer database based on the data acquired by the program name and genre of the program in which the recording command was input from the operation part 11. FIG.

  In the television receiver 100 of the above-described embodiment, the invention of the device in which the CPU 8 executes the control program stored in advance in the ROM 9 has been described. However, the television receiver 100 is recorded on a storage medium such as a flexible disk (FD), CD, or MD. It is also possible to install a control program or a control program downloaded from a network such as the Internet in a non-volatile flash memory or the like of the television receiver, and the CPU 8 can execute the control program. In this case, the invention of the control program used for the television receiver and the invention of the recording medium storing the control program can be realized.

That is, a control program for a television receiver according to the present invention is:
A first step of selecting one main channel or one sub-channel in response to a channel selection signal input by operation from a plurality of main channels or sub-channels to be received, and a channel selected by the first step A second step of analyzing a broadcast program; and when the main channel selected in the first step is switched from a high-definition broadcast to a standard broadcast of a plurality of subchannels, according to the analysis result by the program analysis means And a third step of selecting one sub-channel from a plurality of sub-channel standard broadcasts.

  The second step analyzes the viewing time when the high-definition broadcast before switching to the standard broadcast is selected by the first step, and the third step calculates the program for the broadcast time of the high-definition broadcast. When the proportion of the viewing time analyzed by the analyzing means is larger than a certain value, the subchannel for selecting the subsequent high-definition broadcast program is selected.

In the second step, the user's preference is analyzed and the history of the analysis result is stored in a database. In the third step, among the plurality of subchannels switched from the high-definition broadcast based on the database. The subchannel with the highest user preference is selected.
In this case, the second step analyzes the program name and genre of the program of the channel selected by the first step, and updates the database according to the analysis result.

The block diagram of the television receiver of 1st Embodiment and 2nd Embodiment of this invention. The flowchart of the main routine in 1st Embodiment of CPU of FIG. The flowchart of the main routine of CPU following FIG. The flowchart of the program detection process in FIG. The flowchart of the subchannel detection process in FIG. The figure which shows the viewing-and-listening program according to time passage. The figure which shows the screen of the additional display in a display. The flowchart of the main routine in 2nd Embodiment of CPU of FIG. The flowchart of the main routine of CPU following FIG. The flowchart of the program detection process in FIG. 10 is a flowchart of subchannel detection processing in FIG. 9.

Explanation of symbols

2 Tuner 3 Demodulation Processing Unit G1, G2 Gate 3a, 3b, 3c Band Pass Filter 3d, 3e Demodulation Unit 4 Audio / Video Separation Unit 5 Audio Decoding Unit 6 Video Decoding Unit 7 System Bus 8 CPU
9 ROM
10 RAM
11 Operation unit

Claims (8)

First channel selection means for selecting one main channel or one sub-channel from a plurality of main channels or sub-channels to be received according to a channel selection signal input by the operation;
Program analysis means for analyzing a broadcast program of the channel selected by the first channel selection means;
When the main channel selected by the first channel selection means is switched from the high-definition broadcast to the standard broadcast of a plurality of subchannels, the standard broadcast of the plurality of subchannels is changed according to the analysis result by the program analysis means. Second channel selection means for selecting one subchannel;
A television receiver comprising:   The program analysis means analyzes the viewing time when the high-definition broadcast before switching to the standard broadcast is selected by the first channel selection means, and the second channel selection means determines the broadcast time of the high-definition broadcast. 2. The television reception according to claim 1, wherein when the proportion of the viewing time analyzed by the program analysis means is larger than a certain value, a sub-channel for continuously broadcasting the high-definition broadcast program is selected. apparatus.   The program analysis means analyzes user's preference and stores the history of analysis results in a database for viewers, and the second channel selection means has a plurality of channels switched from high-definition broadcasting based on the database. The television receiver according to claim 1, wherein a subchannel having the highest user preference is selected from the subchannels.   The said program analysis means analyzes the program name and genre of the program of the channel selected by the said 1st channel selection means, and updates the said database according to the analysis result. TV receiver. A first step of selecting one main channel or one sub-channel in response to a channel selection signal input by operation from a plurality of main channels or sub-channels to be received;
A second step of analyzing the broadcast program of the channel selected by the first step;
When the main channel selected in the first step is switched from the high-definition broadcast to the standard broadcast of a plurality of subchannels, 1 is selected from the standard broadcasts of the plurality of subchannels according to the analysis result in the second step. A third step of selecting two subchannels;
Control program for a television receiver that executes   The second step analyzes the viewing time when the high-definition broadcast before switching to the standard broadcast is selected by the first step, and the third step compares the broadcast time of the high-definition broadcast with respect to the broadcast time of the high-definition broadcast. 6. The television receiver according to claim 5, wherein, when the ratio of the viewing time analyzed in step 2 is larger than a certain value, a subchannel for continuously broadcasting the high-definition broadcast program is selected. Control program.   In the second step, the user's preference is analyzed and the history of the analysis result is stored in a database. In the third step, among the plurality of subchannels switched from the high-definition broadcast based on the database. 6. The television receiver control program according to claim 5, wherein a subchannel having the highest user preference is selected.   The said 2nd step analyzes the program name and genre of the program of the channel selected by the said 1st step, and updates the said database according to the analysis result. Control program for television receiver.

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