JP2008263534A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver for efficiently selecting a channel by a channel allocation key when a plurality of organization channels for transmitting the same broadcasting program data and an organization channel for transmitting broadcasting program data different from the broadcasting program transmitted by the plurality of organization channels exist in the same transport stream. <P>SOLUTION: In a digital television receiver 100, when it is determined that an organization channel being output is assigned to one direct channel selection key 22 operated and it is further determined that one specified organization channel shares an event with the organization channel being output, switching to one organization channel which shares the event is skipped and a channel is set which does not share the event with the organization channel being output among the plurality of organization channels included in the same TS. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiving apparatus that receives a digital broadcast signal for multiplex broadcasting.

In the field of digital broadcasting, multiplex broadcasting is performed in which a plurality of SD (Standard Definition) programs are multiplexed and transmitted in one transport stream.
As a method of selecting a channel for multiplex broadcasting in a digital broadcast receiving apparatus, a method of switching a television service to be input and output by inputting the same channel selection signal as that of a receiving station (see, for example, Patent Document 1) There are known a method of assigning a channel to be selected to a direct channel selection key in advance, a method of selecting a channel by inputting a multi-digit channel number, a method of selecting a channel using a channel up / down key, and the like.

In recent years, event sharing (program sharing) in which the same broadcast program data is transmitted may be performed by a plurality of channels (organized channels) in one transport stream. When event sharing is performed in the same transport stream, even if the user switches channels, the same broadcast program data will be selected again, so the channel selection operation is performed efficiently. There was a problem that it was not easy to use for users.
Therefore, for example, in Patent Document 2, when the same component group is transmitted with a plurality of channel numbers at the same time in the same transport stream, the plurality of channels are treated as one channel and the channels are sequentially selected. There has been disclosed a channel selection method that performs channel selection and display at the time of the station, and does not select the channel of the same event multiple times and present it to the user.
Further, in Patent Document 3, even when the remote control key ID in the TS information descriptor is assigned to a plurality of broadcasting stations in a duplicated manner, one of the overlapping broadcasting stations is normally selected while the other is selected. There has been proposed a digital broadcast receiver capable of sub-selecting a broadcast station.
JP 2003-319274 A JP-A-2005-218131 JP 2004-015138 A

However, the above-mentioned Patent Document 2 is a technique related to sequential channel selection, and does not support channel selection using a channel assignment key (direct channel selection key) assigned to a channel in advance that is provided in a remote controller.
Further, according to the technique of Patent Document 3, a sub broadcast station can be selected by pressing a predetermined button after selecting a normally selected broadcast station. If there are both a plurality of channels sharing an event and a channel not sharing an event in the port stream, efficient channel tuning cannot be performed.

  An object of the present invention is to provide a plurality of organized channels for transmitting the same broadcast program data and an organized channel for transmitting broadcast program data different from the broadcast program data transmitted by the plurality of organized channels in the same transport stream. In such a case, it is an object to provide a digital broadcast receiver capable of performing an efficient channel selection operation using a channel assignment key.

In order to solve the above-mentioned problem, the invention described in claim 1 is a digital broadcast receiving apparatus, wherein the receiving means receives a transport stream in which broadcast program data of a plurality of organization channels are multiplexed,
A key operation unit that includes a channel assignment key to which the plurality of organization channels included in the same transport stream are assigned, and a channel up / down key, and receives a key operation by a user;
Each time the channel up / down key in the key operation unit is pressed, sequential switching means for sequentially switching the knitting channels from among a plurality of knitting channels included in the transport stream received by the receiving means;
Output means for performing output based on broadcast program data of the switched organization channel among the plurality of organization channels included in the transport stream received by the receiving unit;
Extracting means for extracting event sharing information from broadcast program data of the organized channel included in the transport stream received by the receiving means;
Whether or not an organization channel of broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated based on the key operation of the one channel assignment key in the key operation unit First judging means for judging
When it is determined by the first determining means that the channel assignment key of the broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated, the channel that has been key-operated A specifying means for specifying one of the plurality of composition channels assigned to the assignment key based on a predetermined order;
A second determination is made based on the event sharing information extracted by the extraction means whether or not the one formation channel specified by the specifying means shares an event with the composition channel being output by the output means. Judgment means,
When the second determining means determines that the one knitting channel specified by the specifying means shares an event with the knitting channel being output by the output means, the one sharing the event While switching to the composition channel is skipped, among the plurality of composition channels included in the same transport stream as the composition channel being output by the output means, the event is not shared with the composition channel being output by the output means. Switching means for switching, and
It is characterized by providing.

The invention according to claim 2 is a digital broadcast receiving apparatus, wherein the receiving means receives a transport stream in which broadcast program data of a plurality of organization channels are multiplexed,
A key operation unit including a channel assignment key to which the plurality of organization channels included in the same transport stream are assigned, and accepting a key operation by a user;
Output means for performing output based on broadcast program data of the switched organization channel among the plurality of organization channels included in the transport stream received by the receiving unit;
Extracting means for extracting event sharing information from broadcast program data of the organized channel included in the transport stream received by the receiving means;
Whether or not an organization channel of broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated based on the key operation of the one channel assignment key in the key operation unit First judging means for judging
When it is determined by the first determining means that the channel assignment key of the broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated, the channel that has been key-operated A specifying means for specifying one of the plurality of composition channels assigned to the assignment key based on a predetermined order;
A second determination is made based on the event sharing information extracted by the extraction means whether or not the one formation channel specified by the specifying means shares an event with the composition channel being output by the output means. Judgment means,
When the second determining means determines that the one knitting channel specified by the specifying means shares an event with the knitting channel being output by the output means, the one sharing the event The switching to the composition channel is skipped, and among the plurality of composition channels included in the same transport stream as the composition channel being output by the output means, the event is not shared with the composition channel being output by the output means. Switching means for switching, and
It is characterized by providing.

According to the first aspect of the present invention, the receiving means receives a transport stream in which broadcast program data of a plurality of organized channels are multiplexed, and a plurality of organized channels included in the same transport stream are allocated. A channel assignment key, a channel up / down key, and a key operation unit that accepts a key operation by a user. Each time the channel up / down key in the key operation unit is pressed by the sequential switching unit, the reception unit Of the plurality of organization channels included in the received transport stream, the organization channels are sequentially switched, and the output unit switches among the plurality of organization channels included in the transport stream received by the reception unit. Of organized channels Output is performed based on the transmitted program data, and the event sharing information is extracted from the broadcast program data of the organized channel included in the transport stream received by the receiving means by the extracting means, and the key operation is performed by the first determining means. Based on the key operation of one channel assignment key in the section, it is determined whether or not the channel channel of the broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated. If it is determined by the means that the first determination means determines that the channel assignment key of the broadcast program data being output is assigned by the output means to the one channel assignment key that has been key-operated, the channel that has been key-operated One organized channel among multiple organized channels assigned to the assigned key The extraction means extracts whether the one knitting channel specified by the specifying means is shared with the knitting channel being output by the output means by the second judging means. Determined based on the event sharing information, and the switching means determines that the one knitting channel specified by the specifying means by the second determining means shares an event with the knitting channel being output by the output means. In this case, switching to the one organization channel sharing the event is skipped, and output from the plurality of organization channels included in the same transport stream as the organization channel being output by the output unit is being output. Switching to a channel that does not share events with other organization channels.
Therefore, the key operation of the channel assignment key prohibits the switching of the plurality of organization channels in the same transport stream to the organization channel that transmits the same broadcast program data as one organization channel, and different broadcast programs. Since switching is performed only between organized channels that transmit data, a plurality of organized channels that transmit the same broadcast program data in the same transport stream, and broadcast program data that is transmitted by the plurality of organized channels When there is an organized channel for transmitting broadcast program data different from the above, a digital broadcast receiving apparatus capable of performing an efficient channel selection operation using a channel assignment key can be provided.

According to the second aspect of the present invention, the receiving means receives a transport stream in which broadcast program data of a plurality of organized channels are multiplexed, and a plurality of organized channels included in the same transport stream are allocated. A broadcast program of a switched knitting channel among a plurality of knitting channels included in a transport stream provided with a channel assignment key, receiving a key operation by a user, and received by a receiving means by an output means The output is performed based on the data, and the event sharing information is extracted from the broadcast program data of the organization channel included in the transport stream received by the receiving means by the extracting means, and the first determining means in the key operation unit One channel assignment key Based on the key operation, it is determined whether or not the channel channel of the broadcast program data being output by the output means is assigned to the one channel assignment key that has been operated by the key. , When it is determined by the output means that the channel of the broadcast program data being output is assigned to one channel assignment key that has been keyed, a plurality of keys assigned to the channel assignment key that has been keyed One knitting channel is identified from the knitting channels based on a predetermined order, and the second deciding means shares one event with the knitting channel being output by the output means. Is determined based on the event sharing information extracted by the extraction means, and the switching means Thus, when the second determination means determines that the one knitting channel specified by the specifying means shares an event with the knitting channel being output by the output means, the one knitting that shares the event Switching to the channel is skipped, and among the plurality of organization channels included in the same transport stream as the organization channel being output by the output means, the output means switches to a channel that does not share an event with the organization channel being output. Is done.
Therefore, by operating the channel assignment key, among the plurality of organized channels in the same transport stream, the organized channel that transmits the same broadcast program data as one organized channel is skipped, and different broadcast program data is transmitted. Since switching is performed only between organized channels, a plurality of organized channels transmitting the same broadcast program data in the same transport stream and a broadcast different from the broadcast program data transmitted by the plurality of organized channels It is possible to provide a digital broadcast receiving apparatus capable of performing an efficient channel selection operation using a channel assignment key when there is an organized channel for transmitting program data.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram illustrating a main configuration of a digital television receiver 100 as a digital broadcast receiving apparatus in the present embodiment.
As shown in FIG. 1, a digital television receiver 100 according to the present embodiment includes a remote controller 2 as a key operation unit and a receiver body 1 that is remotely operated by the remote controller 2. Yes.

FIG. 2 is a plan view of the remote controller 2 provided in the digital television receiver 100 according to this embodiment.
A remote controller (hereinafter referred to as “remote controller”) 2 includes a plurality of keys for the user to input various instructions to the receiver body 1, detects a key pressing operation by the user, By outputting a remote control signal corresponding to the pressed key, the receiver body 1 is remotely operated. Specifically, when the user presses a key with the remote control 2 facing the receiver body 1, a remote control signal such as an infrared ray corresponding to the pressed key is generated and output, and the input operation signal is received by the receiver. The signal is received by the remote control signal light receiving unit 3 provided on the front panel or the like of the main body 1.
Specifically, for example, as shown in FIG. 2, the remote controller 2 displays a power key 21 for turning on / off the power of the receiver body 1 and numbers “0” to “12” respectively. , A direct channel selection key 22 (described later) as a channel assignment key to which the organization channel included in each transport stream is assigned, a channel up key 23a for “+1” the channel number, and “−1” for the channel number. A channel up / down key 23 (to be described later) which is composed of a channel down key 23b and sequentially switches the knitting channel, a terrestrial digital key 24 for selecting terrestrial digital broadcasting, and a BS key 25 for selecting BS broadcasting, , CS key 26 for selecting CS broadcast and various menu screens are displayed on the video output unit New key 27, confirmation key 28 for confirming input, clear key 29 for erasing input, volume up / down key 30 for adjusting volume, voice mode switching key 31 for selecting and switching voice modes, and the previous state And a return key 32 for returning to the screen.
Such a key operation group may be provided on the front surface of the receiver body 1 or the like.

  The receiver body 1 includes a remote control signal light receiving unit 3 that receives a remote control signal from a remote controller 2, an antenna 4 that receives a broadcast signal, and a receiving unit that selects a predetermined broadcast signal from the broadcast signal received by the antenna 4. As a tuner 5, a demodulator 6 that demodulates a broadcast signal selected by the tuner 5 into a transport stream (hereinafter referred to as “TS”), and a separator 7 that separates the TS demodulated by the demodulator 6. A video decoder 8 and an audio decoder 9 that decode the stream separated by the separation unit 7, a video processing unit 10 that performs predetermined processing on the video signal decoded by the video decoder 8, and a decoding performed by the audio decoder 9. The audio processing unit 11 that performs predetermined processing on the audio signal that has been processed, and the OSD data on the video signal processed by the video processing unit 10 An OSD circuit 12 to be added, a display unit 13 that outputs a video signal processed by the video processing unit 10, an audio output unit 14 that outputs an audio signal processed by the audio processing unit 11, and the digital television receiver 100. A control unit 15 that performs overall control of the whole and the like are provided, and each unit is connected by a bus 16.

  For example, although not shown, the remote control signal light receiving unit 3 includes a photodiode, a SUBCPU, an amplification unit, a demodulation unit, a decoder, and the like, and a remote control signal transmitted from the remote control 2. Is received by the photodiode provided on the front panel, and is amplified by the amplifying unit and then demodulated by the demodulating unit under the control of the SUBCPU. Further, the decoder performs various processes such as waveform shaping, error correction, etc. 15 is output.

The antenna 4 includes, for example, a BS antenna, a CS antenna, and a terrestrial digital antenna. The antenna 4 is arranged in a predetermined direction outdoors and is transmitted from a television broadcast station (not shown) or the like. Receive broadcast signals (RF signals).
For example, although not shown, the tuner 5 includes a high-frequency amplifier circuit and a frequency conversion circuit including a local oscillation circuit and a mixing circuit. The tuner 5 receives a television broadcast signal input from the antenna 4 or the like. The signal is amplified in the high frequency amplifier circuit and mixed with the local oscillation signal output from the local oscillation circuit in the mixing circuit. Further, in response to a control output from the control unit 15 for selecting a specific frequency, an intermediate frequency signal (IF signal) in a specific frequency band is received, a predetermined process is performed on the intermediate frequency signal, and a demodulation unit 6 is output.

For example, the demodulating unit 6 performs processing such as digital demodulation and error correction on the intermediate frequency signal output from the tuner 5 based on the control from the control unit 15, generates a TS, and generates the TS. Output to.
TS is a series of TS packets generated by dividing PES (Packetized Elementary Stream) in which video data and audio data composing a broadcast program are encoded and packetized into 188-byte fixed-length packets. Each TS packet includes a PID (Packet Identifier) for identifying the contents of the TS packet.

The separation unit 7 separates a video stream, an audio stream, and PSI (Program Specific Information: Program Specific Information) / SI (Service Information: Program Sequence Information) from the TS input from the demodulation unit 6.
The PSI is four tables of PMT (Program Map Table), PAT (Program Association Table), NIT (Network Information Table), and CAT (Conditional Access Table), and is used for program selection and the like. Among these, the PID for identifying each TS packet is described in the PAT, and the PID assigned to the video and audio constituting the broadcast program data is described in the PMT. When the TS is input from the demodulating unit 6, the separating unit 7 separates the PAT from the input TS, and identifies the PID described in the PAT. Further, based on the identified PID, the PMT of the target organization channel is referred to, and necessary TS packets are separated from the TS based on the PID of the PMT. Then, among the separated TS packets, a video stream under the MPEG2 (Moving Picture Experts Group 2) standard is output to the video decoder 8 and an audio stream is output to the audio decoder 9.
SI is various tables such as SDT (Service Description Table), EIT (Event Information Table), BAT (Bouquet Association Table), TDT (Time Date Table), etc. Used to display EPG information. Specifically, whether or not event sharing in which the same broadcast program data is transmitted by a plurality of organization channels included in one TS is performed is determined based on the SI EIT separated from the broadcast program data of each organization channel. It is identified by analysis. In this case, the EIT is used as event sharing information.

  The video decoder 8 decodes the video stream input from the separation unit 7, performs inverse DCT conversion, motion compensation control, and the like, generates video data, and outputs the video data to the video processing unit 10. The audio decoder 9 decodes the audio stream input from the separation unit 7, generates audio data, and outputs the audio data to the audio processing unit 11.

  The video processing unit 10 performs various processes such as D / A conversion on the video data input from the video decoder 8 to generate a video signal. The audio processing unit 11 performs various processes such as D / A conversion on the audio data input from the audio decoder 9 to generate an audio signal. The generated video signal is output to the display unit 13, and the audio signal is output to the audio output unit 14.

  The OSD circuit 12 performs a process of synthesizing OSD data (not shown) with the video signal output from the video processing unit 10 in response to an instruction output from the control unit 15.

The display unit 13 includes a display 13a such as an LCD (Liquid Crystal Display) or a PDP (Plasma Display Panel), and displays an image based on the video signal input from the video processing unit 10 on the display 13a.
The audio output unit 14 includes, for example, a speaker 14a, and causes the speaker 14a to output audio based on the audio signal input from the audio processing unit 11.

  The control unit 15 includes a CPU (Central Processing Unit) 151, a memory unit 152, a ROM (Read Only Memory) 153, and the like.

  The CPU 151 executes various programs stored in the ROM 153 in accordance with input signals input from the respective units of the receiver body 1 and input operation signals input by pressing various keys on the remote controller 2. The overall operation of the digital television receiver 100 is comprehensively controlled by outputting an output signal to each part of the receiver body 1 based on the program.

  The memory unit 152 includes a work area 1521 made of a volatile memory such as a RAM (Random Access Memory), for example. The processing result generated when various programs are executed by the CPU 151, input data, etc. The work area 1521 is stored.

  The memory unit 152 includes a data area 1522 made of a nonvolatile memory such as an EPROM (Erasable Programmable ROM). The data area 1522 stores, for example, channel information 1522a.

For example, as shown in FIG. 3, the channel information 1522a includes, for each of the direct channel selection keys 22 provided in the remote controller 2, the TS physical channel, the name of the broadcasting station that transmits the TS, the frequency of the physical channel, and the like. This is a table that stores the association channels included in the TS in association with each other.
When a remote control signal generated in response to pressing of the direct channel selection key 22 is input to the receiver body 1 via the remote control signal light receiving unit 3, the CPU 151 is pressed based on the remote control key ID of the remote control signal. The direct channel selection key 22 is identified. Then, referring to the channel information 1522a, the TS is received based on the physical channel associated with the pressed direct channel selection key 22 and its frequency. Further, when broadcast program data of a plurality of organization channels is multiplexed in the received TS, the separation unit 7 uses the organization channel having the smallest number among the plurality of organization channels (hereinafter referred to as the same TS). TS packet which is the broadcast program data of the smallest number among the plurality of composition channels existing in FIG.
For example, when any channel is not selected or another channel is selected, when the direct channel selection key “1” 22 is pressed, the channel is associated with the direct channel selection key 22. When a TS is received by the tuner 5 based on the frequency of the physical channel and there are three formation channels “011”, “012”, and “013” in the TS, the main channel “011” "" Is selected and output.

  The ROM 153 has a program storage area composed of a nonvolatile memory. Specifically, the extraction program 153a, the first determination program 153b, the specific program 153c, the second determination program 153d, the switching program 153e, and the sequential switching program 153f. And an output program 153g.

The extraction program 153a is a program for causing the CPU 151 to realize a function of extracting event sharing information from broadcast program data of a plurality of channels received by the tuner 5, for example.
Specifically, when executing the second determination program 153d described later, the CPU 151 extracts SI from the broadcast program data of the organization channel included in the TS input from the demodulation unit 6 in the separation unit 7, and extracts the extracted SI. By analyzing the EIT, the event sharing information multiplexed and transmitted to the broadcast program data of the organization channel is extracted.
The CPU 151 functions as an extraction unit together with the separation unit 7 by executing the extraction program 153a.

For example, the first determination program 153b is output to the CPU 151 by executing the output program 153g to the one direct channel selection key 22 that is key-operated based on the key operation of the one direct channel selection key 22 on the remote controller 2. This is a program for realizing a function of determining whether or not an organization channel of broadcast program data in the middle is assigned.
Specifically, a remote control signal is generated based on the pressing operation of any direct channel selection key 22 provided on the remote controller 2, and the generated remote control signal is input to the receiver body 1 via the remote control signal light receiving unit 3. Then, the CPU 151 identifies the directly selected channel selection key 22 based on the remote control key ID of the remote control signal. Then, the above-mentioned channel information 1522a stored in the memory unit 152 is read out, and whether or not the organization channel being viewed being output by the execution of the output program 153g is assigned to the identified direct channel selection key 22 or not. Based on this, it is determined whether or not the direct channel selection key 22 assigned to the organization channel being viewed has been operated.
For example, when the channel selection channels “011” to “013” are assigned to the direct channel selection key “1” 22 and the channel being viewed is “011”, the direct channel selection key “1” 22 is assigned. When “1” 22 is pressed, the CPU 151 refers to the channel information 1522a and assumes that the viewing channel “011” being assigned to the pressed direct channel selection key “1” 22 is currently being viewed. It is determined that the direct channel selection key 22 to which the organization channel is assigned is operated.
The CPU 151 functions as a first determination unit by executing the first determination program 153b.

In the specific program 153c, for example, in the execution of the first determination program 153b, the channel 151 of the broadcast program data being output by the output program 153g is assigned to the one direct channel selection key 22 that has been key-operated. In order to realize a function of identifying one knitting channel based on a predetermined order from among a plurality of knitting channels assigned to the direct channel selection key 22 that has been key-operated. It is a program.
Specifically, in the execution of the first determination program 153b described above, when determining that the direct channel selection key 22 to which the organization channel being viewed is assigned has been operated, the CPU 151 sets the TS of the organization channel being viewed. Among the plurality of organization channels included, the organization channel having the next highest number after the organization channel being viewed is identified.
For example, when it is determined that the direct channel selection key “1” 22 to which the viewing channel “011” being viewed is assigned is pressed, the CPU 151 exists in the same TS as the viewing channel “011”. Among the three organization channels “011” to “013”, “012” is identified by “+1” the organization channel “011” being viewed.

For example, the second determination program 153d allows the CPU 151 to determine whether the knitting channel specified in the execution of the specifying program 153c shares an event with the knitting channel that is being output by the execution of the output program 153g. This is a program for realizing a function of making a determination based on event sharing information extracted by execution.
Specifically, in the execution of the first determination program 153b, it is determined that the direct channel selection key 22 to which the organization channel being viewed is assigned has been key-operated. When the organization channel having the next highest number after the organization channel that is being viewed is identified from among the plurality of organization channels existing in, the CPU 151 indicates that the broadcast program data transmitted by the identified organization channel is being viewed. Whether or not event sharing that is the same as the broadcast program data transmitted by the organization channel is performed is determined based on the event sharing information extracted from the broadcast program data of these organization channels by executing the extraction program 153a. To do.
For example, when the viewing channel is “011”, the direct channel selection key “1” 22 associated with the scheduling channel is pressed, and the number of the viewing channel is “+1”. When “012” is specified, the CPU 151 analyzes the SI multiplexed in the broadcast program data of the respective organized channels “011” and “012” by executing the extraction program 153a described above, thereby sharing the event. Extract information. Then, based on the extracted event sharing information, it is determined whether or not the identified organization channel “012” is sharing an event with the organization channel “011” being viewed. For example, when “012” transmits the same broadcast program data as “011”, the CPU 151 determines that the identified channel “012” shares an event with the viewing channel “011” being viewed. In addition, when the identified organization channel “012” is transmitting different broadcast program data from the organization channel “011” being viewed, the identified channel “012” is the organization channel “011” being viewed. ”And determine that the event is not shared.
The CPU 151 functions as a second determination unit by executing the second determination program 153d.

The switching program 153e, for example, causes the CPU 151 to share the event of the one knitting channel specified by the execution of the specifying program 153c with the execution of the second determination program 153d with the knitting channel being output by the execution of the output program 153g. When it is determined that there is a plurality of knitting channels included in the same TS as the knitting channel being output by executing the output program 153g, the switching to one knitting channel sharing the event is skipped. This is a program for realizing a function of switching to a channel not sharing an event with the organization channel being output by executing the output program 153g.
Specifically, when executing the second determination program 153d, the CPU 151 determines that the organization channel specified in the execution of the specifying program 153c does not share an event with the organization channel being viewed. Switch to the organization channel determined to be not. In the execution of the specific program 153c, when it is determined that the organization channel specified in the execution of the specific program 153c shares an event with the organization channel that is being viewed, it is determined that the event is shared. Skips switching to the organization channel.
Further, when skipping the switching to the composition channel determined to be sharing the event, the CPU 151 executes the above-described specific program 153c and second determination program 153d again, and sets the TS of the composition channel being viewed. From among the plurality of composition channels included, a composition channel having the next highest number after the composition channel for which switching has been skipped is newly specified. Then, the above-described processing is repeated based on the newly identified organization channel, and it is determined whether the identified organization channel shares an event with the organization channel being viewed. When the CPU 151 determines that the organization channel specified in the execution of the specific program 153c does not share an event with the organization channel being viewed, the CPU 151 switches to the organization channel determined not to share the event. On the other hand, if it is determined that the organization channel identified in the execution of the specific program 153c is sharing an event with the organization channel being viewed, switching to the organization channel determined to be sharing the event Is skipped, and the specific program 153c and the second determination program 153d are executed again.
Each time the direct channel selection key 22 is pressed, the CPU 151 shares the above-described processing by executing the first determination program 153b, the specific program 153c, and the second determination program 153d in the execution of the second determination program 153d. Repeat until there is a channel switch to a non-organized channel. Further, the CPU 151 switches to the main channel having the smallest number again when the direct channel selection key 22 is pressed after switching to the composition channel having the largest number among the plurality of composition channels existing in the same TS. I do. That is, when the direct channel selection key 22 is continuously pressed, the channels are sequentially switched between the knitting channels that do not share the event with each other.

For example, in the execution of the specific program 153c, “012” obtained by adding “+1” to the composition channel “011” being viewed is identified, and in the execution of the second determination program 153d, the identified “012” is the composition channel currently being viewed. When it is determined that the event is shared with “011”, the CPU 151 skips the composition channel “012” that is determined to be shared with the event, and also “+1” the composition channel “012”. “013” is newly specified. Then, it is determined whether or not the newly specified organization channel “013” shares an event with the currently viewed organization channel “011”, and “013” shares an event with the currently viewed organization channel “011”. If it is determined that it is not, the channel is switched to “013”.
Therefore, when the viewing channel is “011”, “012” shares an event with “011”, and “013” does not share an event with these channels. Each time the key “1” 22 is pressed, the channels are switched between the knitted channels that do not share the event, such as “011” → “013” → “011” →. .
The CPU 151 functions as a switching unit by executing the switching program 153e.

The sequential switching program 153f is for realizing a function of sequentially switching the knitting channels from the plurality of knitting channels included in the TS received by the tuner 5 each time the channel up / down key 23 in the remote controller 2 is pressed. It is a program.
Specifically, every time the channel up key 23a or the channel down key 23b provided on the remote controller 2 is pressed, the CPU 151 determines whether or not another organization channel exists in the same TS as the organization channel being viewed. When it is determined that there is another knitting channel, each time the channel up key 23a or the channel down key 23b is pressed, the knitting channel is sequentially switched between the plurality of knitting channels existing in the same TS. I do. Further, the CPU 151 switches the channel number to the largest / smallest among the plurality of organization channels existing in the same TS, and when the channel up key 23a or the channel down key 23b is pressed, the channel number becomes the highest. Switch to the channel with the smallest channel / largest channel number.

For example, when the channel being viewed is “011”, when the channel up key 23a of the remote controller 2 is pressed, the CPU 151 determines whether there is another organization channel in the TS including “011”. When it is determined that there are other organization channels “012” and “013”, the channel number of the organization channel “011” being viewed is switched to the next organization channel “012” obtained by adding “+1”. The CPU 151 repeats this process every time the channel up key 23a is pressed, and when the channel up key 23a is pressed after switching to the knitting channel having the highest channel number (for example, “013”), the channel number is the highest. Switch to a smaller main channel (eg, “011”). On the other hand, in the case of the key operation of the channel down key 23b, when the channel down key 23b is pressed after switching to the main channel having the smallest channel number (for example, “011”), the organization having the largest channel number is set. Switch to the channel (eg, “013”).
That is, every time the channel up key 23a is pressed, regardless of whether or not the event is shared, the composition existing in the same TS, such as “011” → “012” → “013” → “011” →. Channels are sequentially switched by “+1” between channels. Similarly, every time the channel down key 23b is pressed, regardless of whether the event is shared, “013” → “012” → “011” → “013” →... The channels are sequentially switched by “−1” between the existing knitting channels.
Therefore, if the channel up key 23a or the channel down key 23b is pressed, the same channel is formed without skipping the channel for sharing the event for transmitting the same broadcast program between the plurality of channel in the same TS. Channels can be sequentially switched to all the knitting channels in the TS. For this reason, for example, even when the reception status of one organized channel is poor due to radio wave interference, etc., the channel up / down key 23 is used to switch to another organized channel for sharing events with the organized channel. It can be performed. Also, for example, when the same broadcast program with different audio modes and image quality is being broadcast on other organized channels that share the event, a plurality of organized channels that share the event by operating the channel up / down key 23 Therefore, it becomes possible to select a knitting channel having a desired voice mode and image quality.
The CPU 151 functions as a sequential switching unit by executing the sequential switching program 153f.

The output program 153g is, for example, a program for causing the CPU 151 to realize a function of performing output based on broadcast program data of a switched knitting channel among a plurality of knitting channels included in the TS received by the tuner 5. is there.
Specifically, when the knitting channel is switched by executing the switching program 153e or the sequential switching program 153f, the CPU 151 separates the TS packet of the knitting channel switched in the separation unit 7 based on the switching, and separates the TS packet. The video decoder 8 and audio decoder 9 perform decoding processing on the TS packet, and the video processing unit 10 and audio processing unit 11 perform predetermined video and audio processing. And it outputs to the display part 13 and displays a video | video on the display 13a, and it outputs to a video | video output part and outputs a sound from the speaker 14a.
The CPU 151 functions as an output unit by executing the output program 153g.

Next, channel selection processing by key operation of the direct channel selection key 22 will be described with reference to the flowchart of FIG.
First, in step S <b> 1, the CPU 151 determines whether any direct channel selection key “X” 22 provided on the remote controller 2 is pressed. When the CPU 151 determines that the direct channel selection key “X” 22 is pressed based on the remote control signal based on the direct channel selection key “X” 22 being input to the control unit 15 (step S1; Yes), the step In S2, the channel information 1522a is read out, and the physical channel assigned to the pressed direct channel selection key 22 is associated with the organization channel being viewed and outputting the video / audio by executing the output program 153g. It is determined whether or not the viewing channel that is being viewed is assigned to the direct channel selection key “X” 22 that has been key-operated. When CPU 151 determines in step S2 that the channel channel being viewed is not assigned to the direct channel selection key “X” 22 that has been key-operated (step S2; No), in channel information 1522a in step S3, The main channel with the smallest number is selected from the organization channels associated with the direct channel selection key “X” 22, and this processing is terminated. On the other hand, if the CPU 151 determines in step S2 that the organization channel being viewed is assigned to the direct channel selection key “X” 22 that has been key-operated (step S2; Yes), the process proceeds to step S4.

In step S4, the CPU 151 sets “YYY” as the channel currently being viewed. In step S5, it is determined whether or not there is a “YYY + 1” knitting channel in which “YYY” is “+1”. If the CPU 151 determines in step S5 that there is a “YYY + 1” knitting channel in which “YYY” is “+1” (step S5; Yes), the process proceeds to step S7, while in step S5 “YYY” is changed to “+1”. If it is determined that there is no knitted channel “YYY + 1” (step S5; No), “YY1” (that is, the main channel) is set to “YYY + 1” in step S6, and the process proceeds to step S7.
That is, for example, when there are three composition channels “011” to “013” in the same TS and the composition channel “YYY” currently being viewed is “013”, “014” is “YYY + 1”. ”Does not exist,“ 011 ”, which is the main channel with the smallest number among the plurality of organization channels in the same TS, is set to“ YYY + 1 ”.

In step S <b> 7, the CPU 151 determines whether the “YYY + 1” organization channel shares an event with the “YYY” organization channel based on the event sharing information extracted from the broadcast program data of both channels. If the CPU 151 determines in step S7 that the knitting channel “YYY + 1” shares an event with the knitting channel “YYY” (step S7; Yes), “YYY + 1” is set to “YYY” in step S8. Returning to step S5, the above processing is repeated. On the other hand, if the CPU 151 determines in step S7 that the knitting channel “YYY + 1” does not share an event with the knitting channel “YYY” (step S7; No), the knitting channel “YYY + 1” is selected in step S9. Channel selection and channel switching are performed, and this process ends.
That is, for example, when “012” shares an event with “011” and “013” does not share an event with these composition channels, the composition channel “YYY” being viewed is “011”. In step S7, it is determined that “012” which is “YYY + 1” shares an event with “011” which is “YYY”. In subsequent step S8, “012” is changed to “YYY”, and step S5 is performed again. Will proceed to. In step S5, it is determined that “YYY + 1” and “013” exist. In step S7, “013” that is “YYY + 1” is determined not to share an event with “012” that is “YYY”. Then, the channel is switched to the knitting channel “013”.

According to the digital television receiver 100 in the present embodiment described above, a TS in which broadcast program data of a plurality of organization channels is multiplexed is received from the tuner 5 and a plurality of organization channels included in the same TS are allocated. Provided with a direct channel selection key 22 and a channel up / down key 23, and a remote controller 2 for accepting a key operation by the user. The channel up / down key 23 of the remote controller 2 is depressed by executing the sequential switching program 153f. Each time, the knitting channels are sequentially switched from among the plurality of knitting channels included in the TS received by the tuner 5, and the output program 153 g selects among the plurality of knitting channels included in the TS received by the tuner 5. , Switched knitting The output is performed based on the broadcast program data of the channel, and by executing the extraction program 153a, event sharing information is extracted from the broadcast program data of the organization channel included in the TS received by the tuner 5, and the first determination program 153b. By executing the key, the channel of the broadcast program data being output to the one direct channel selection key 22 that is key-operated based on the key operation of the one direct channel selection key 22 on the remote controller 2 by executing the output program 153g. Is transmitted to the one direct channel selection key 22 that has been key-operated by the execution of the first determination program 153b by the execution of the specific program 153c. If a program data organization channel is assigned In the case of a disconnection, one knitting channel is identified based on a predetermined order from among the plurality of knitting channels assigned to the direct channel selection key 22 that has been key-operated, and the second determination program 153d is executed. In the event sharing information extracted by the execution of the extraction program 153a, whether one knitting channel specified by the execution of the specifying program 153c shares an event with the knitting channel being output by the execution of the output program 153g. Based on the execution of the switching program 153e, the one knitting channel specified by the execution of the specific program 153c by the execution of the second determination program 153d shares an event with the knitting channel being output by the execution of the output program 153g. If it is determined that Switching to the one knitting channel sharing the event is skipped, and output by executing the output program 153g among a plurality of knitting channels included in the same TS as the knitting channel being output by executing the output program 153g. Switching to a channel that does not share events with the organization channel inside.
Therefore, by pressing the direct channel selection key 22, switching among the plurality of organization channels in the same TS to the organization channel transmitting the same broadcast program data as one organization channel is prohibited, and different broadcast programs Since switching is performed only between organized channels that transmit data, a plurality of organized channels that transmit the same broadcast program data in the same TS and broadcast program data transmitted by the plurality of organized channels are different. When there is an organized channel for transmitting broadcast program data, it is possible to provide the digital television receiver 100 that can perform an efficient channel selection operation using the direct channel selection key 22.

The present invention is not limited to the scope of the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, the determination of the presence / absence of event sharing is not limited to the case of performing an analysis of SI superimposed on broadcast program data as in the above embodiment, and other methods may be selected.

It is a block diagram which illustrates the principal part structure of the digital television receiver in this embodiment. It is a top view of the remote controller with which the digital television receiver in this embodiment is equipped. It is an example of channel information. It is a flowchart which shows the channel selection process by the key operation of a direct channel selection key.

Explanation of symbols

100 Digital television receiver (digital broadcast receiver)
2 Remote controller (key operation unit)
22 Direct channel selection key (channel assignment key)
23 Channel Up / Down Key 23a Channel Up Key (Channel Up / Down Key)
23b Channel down key (Channel up / down key)
5 Tuner (Receiving means)
7 Separation part (extraction means)
151 CPU (extraction means, first judgment means, identification means, second judgment means, switching means, sequential switching means, output means)
153a Extraction program (extraction means)
153b First determination program (first determination means)
153c Specific program (specific means)
153d Second judgment program (second judgment means)
153e switching program (switching means)
153f Sequential switching program (sequential switching means)
153g Output program (output means)

Claims (2)

Receiving means for receiving a transport stream in which broadcast program data of a plurality of organization channels are multiplexed;
A key operation unit that includes a channel assignment key to which the plurality of organization channels included in the same transport stream are assigned, and a channel up / down key, and receives a key operation by a user;
Each time the channel up / down key in the key operation unit is pressed, sequential switching means for sequentially switching the knitting channels from among a plurality of knitting channels included in the transport stream received by the receiving means;
Output means for performing output based on broadcast program data of the switched organization channel among the plurality of organization channels included in the transport stream received by the receiving unit;
Extracting means for extracting event sharing information from broadcast program data of the organized channel included in the transport stream received by the receiving means;
Whether or not an organization channel of broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated based on the key operation of the one channel assignment key in the key operation unit First judging means for judging
When it is determined by the first determining means that the channel assignment key of the broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated, the channel that has been key-operated A specifying means for specifying one of the plurality of composition channels assigned to the assignment key based on a predetermined order;
A second determination is made based on the event sharing information extracted by the extraction means whether or not the one formation channel specified by the specifying means shares an event with the composition channel being output by the output means. Judgment means,
When the second determining means determines that the one knitting channel specified by the specifying means shares an event with the knitting channel being output by the output means, the one sharing the event While switching to the composition channel is skipped, among the plurality of composition channels included in the same transport stream as the composition channel being output by the output means, the event is not shared with the composition channel being output by the output means. Switching means for switching, and
A digital broadcast receiving apparatus comprising: Receiving means for receiving a transport stream in which broadcast program data of a plurality of organization channels are multiplexed;
A key operation unit including a channel assignment key to which the plurality of organization channels included in the same transport stream are assigned, and accepting a key operation by a user;
Output means for performing output based on broadcast program data of the switched organization channel among the plurality of organization channels included in the transport stream received by the receiving unit;
Extracting means for extracting event sharing information from broadcast program data of the organized channel included in the transport stream received by the receiving means;
Whether or not an organization channel of broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated based on the key operation of the one channel assignment key in the key operation unit First judging means for judging
When it is determined by the first determining means that the channel assignment key of the broadcast program data being output by the output means is assigned to the one channel assignment key that has been key-operated, the channel that has been key-operated A specifying means for specifying one of the plurality of composition channels assigned to the assignment key based on a predetermined order;
A second determination is made based on the event sharing information extracted by the extraction means whether or not the one formation channel specified by the specifying means shares an event with the composition channel being output by the output means. Judgment means,
When the second determining means determines that the one knitting channel specified by the specifying means shares an event with the knitting channel being output by the output means, the one sharing the event The switching to the composition channel is skipped, and among the plurality of composition channels included in the same transport stream as the composition channel being output by the output means, the event is not shared with the composition channel being output by the output means. Switching means for switching, and
A digital broadcast receiving apparatus comprising:

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