JP2008236788A - Broadcast receiver and broadcast reception method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiver and a broadcast reception method which allow a down channel selection operation meeting user's request to be realized by defining a rule of down channel selection, which considers the case that a plurality of broadcasts having the same three-digit channel number can be received. <P>SOLUTION: In the broadcast receiver wherein branch numbers (0), (1) and (2) different by broadcasting channels are added to a channel number (011) in the case that a plurality of broadcasting channels to which the same channel number (011) is added are received, the channel selection operation is performed in the descending order of channel numbers and in the order of branch numbers (0), (1) and (2) of the same channel number (011) when down channel selection for broadcasting channels is requested. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a broadcast receiving apparatus and a broadcast receiving method particularly suitable for receiving digital terrestrial broadcasting.

  As is well known, in recent years, digitization of television broadcasting has been promoted. In Japan, not only satellite digital broadcasting such as BS (Broadcasting Satellite) digital broadcasting and 110-degree CS (Communication Satellite) digital broadcasting but also terrestrial digital broadcasting is started.

  Since this digital terrestrial broadcasting is premised on the foundation of the current analog terrestrial broadcasting, the concept of 12 positions with 12 keys for channel direct channel selection and the whole of Japan divided into multiple regions. In addition, the concept of regional unit that establishes a broadcasting station for each region is incorporated in its operational rules.

  The broadcasting stations in each region, together with the program information, control information (region identification) indicating which region the broadcast is for, and which of the 12 positions the own broadcast channel is set to. Control information (remote_control_key_id) that specifies whether to allocate is transmitted.

  In digital terrestrial broadcasting, each broadcast channel is distinguished by a channel number consisting of a three-digit number. This three-digit channel number is defined so that the same three-digit channel number is not duplicated in the same region based on the concept of the region unit described above.

  However, this three-digit channel number can be duplicated between different regions. For this reason, in the cross-border area, in addition to the broadcast in its own residential area, the broadcast in the adjacent area can also be viewed, so there is a possibility that a plurality of broadcasts with the same 3-digit channel number will be received.

  When multiple broadcasts with the same 3-digit channel number are received in this way (more precisely, when multiple broadcasts with the same remote_control_key_id can be received), in the terrestrial digital broadcast operation rules, the duplicates are caused by the processing on the receiver side. A 1-digit branch number is automatically assigned to a 3-digit channel number.

  This branch number can be added from “0” to a maximum of “9”. In this case, the branch number “0” is preferentially assigned to the broadcast for the user's residential area (intra-area broadcast), and the branch number is set to “1” for the broadcast outside the user's residential area (out-of-area broadcast). They are allocated in order.

  Here, in terrestrial digital broadcasting, the up / down channel selection operation of a broadcast channel is basically performed by sequentially selecting three-digit channel numbers in ascending or descending order.

  However, when multiple broadcasts with the same remote_control_key_id can be received as described above, that is, when there are multiple broadcasts with the same 3-digit channel number, simply select the 3-digit channel numbers sequentially in ascending or descending order. Therefore, there arises a problem that the up / down channel selection method cannot be adopted.

  Patent Document 1 discloses a configuration in which initial synchronization can be quickly achieved and new transmission parameters can be acquired by referring to a reception area-to-transmission parameter correspondence table stored in advance from the reception area. .

  Further, in Patent Document 2, a channel selection table is created from received data, and a CPU (Central Processing Unit) that receives a channel up or down signal refers to the table from the currently displayed channel. A configuration in which the next channel is selected is disclosed.

  Further, Patent Document 3 discloses a configuration in which when a channel number is directly input, if there are a plurality of channel numbers that are the same as the input value, they are simultaneously presented to the user for selection. Yes.

However, as described above, these Patent Documents 1 to 3 do not provide any countermeasures for the case where a plurality of broadcasts having the same 3-digit channel number are received in the up / down channel selection. It is not described.
JP 2002-218339 A JP 2001-177778 A JP 2002-094889 A

  Therefore, the present invention has been made in consideration of the above circumstances, and provides rules for down-tuning considering the case where a plurality of broadcasts having the same 3-digit channel number can be received, and down-selection according to the user's request. An object of the present invention is to provide a broadcast receiving apparatus and a broadcast receiving method capable of realizing a station operation.

  The broadcast receiving apparatus according to the present invention selectively receives a plurality of broadcast channels each having a channel number, and when a plurality of broadcast channels having the same channel number are received, It is intended to add a different branch number for each broadcast channel. And, in a state in which down channel selection of the broadcast channel is requested, it is provided with a channel selection control means for performing a channel selection operation in the order of the channel number and in the order of the branch number for the same channel number. Down channel selection means for switching the channel number in descending order when a down channel selection of the broadcast channel is requested and switching the branch number in descending order among the same channel number when there are a plurality of the same channel numbers. It is intended to be prepared.

  Further, the broadcast receiving method according to the present invention selectively receives a plurality of broadcast channels each having a channel number, and when a plurality of broadcast channels having the same channel number are received, those channels are received. A method of adding a different branch number for each broadcast channel to the number is targeted. Then, in a state where down channel selection of the broadcast channel is requested, the channel numbers are switched in descending order, and when there are a plurality of the same channel numbers, the branch numbers are switched in descending order among the same channel numbers. It is a thing.

  According to the above-described configuration and method, when selecting a broadcast channel down, the channel selection operation is performed in the descending order of the channel numbers and in the descending order of the branch numbers for the same channel numbers. It is possible to define a down channel selection rule considering a case where a plurality of channel number broadcasts can be received, and to realize a down channel selection operation in response to a user request.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a digital television broadcast receiver that supports reception of terrestrial digital broadcasts.

  That is, the terrestrial digital broadcast signal received by the digital antenna 11 is supplied to the tuner 12 and a predetermined transmission channel is selected, and then output to the error correction circuit 13.

  The error correction circuit 13 performs demodulation processing on the received signal output from the tuner 12, performs error correction processing, and then outputs the signal to the scramble control circuit 14.

  When the input received signal is scrambled, the scramble control circuit 14 performs descrambling to release the scramble and outputs the scramble control circuit 14 to the multiplexed data separation circuit 15. In this case, the data supplied from the scramble control circuit 14 to the multiplexed data separation circuit 15 is multiplexed data including a plurality of channels and program data.

  The multiplexed data separation circuit 15 separates the packets based on the identification information ID included in the bit stream of the received signal. When the multiplexed data separation circuit 15 separates the program information of SI (Service Information) information, the multiplexed data separation circuit 15 supplies the program information to the control control circuit 16 and, for each packet video signal, MPEG (Moving Picture Experts Group). ) The video signal is supplied to the video reproduction circuit 17 and the audio signal is supplied to the MPEG audio reproduction circuit 18.

  Since the input video signal is compression-encoded, the MPEG video reproduction circuit 17 performs a decoding process on the compression-encoded data and outputs it as an analog video signal.

  The control control circuit 16 generates an OSD signal required for display based on the SI information acquired from the multiplexed data separation circuit 15 and outputs the OSD signal to the OSD circuit 19.

  The OSD circuit 19 superimposes the video signal output from the MPEG video playback circuit 17 and the OSD signal supplied from the control control circuit 16 and outputs the superimposed signal to a CRT (Cathode Ray Tube) 20 for video display. Let

  Further, the MPEG audio reproduction circuit 18 is obtained by compressing and encoding the input audio signal, so that the audio signal is subjected to a decoding process and an analog audio signal after the decoding process is output. The audio signal output from the MPEG audio reproduction circuit 18 is guided to the speaker 21 for audio reproduction.

  Here, all operations of the digital television broadcast receiver are comprehensively controlled by the control control circuit 16. The control control circuit 16 incorporates a CPU (Central Processing Unit) (not shown), receives operation information sent from the remote controller 22, and controls each circuit unit so that the operation content is reflected. is doing.

  FIG. 2 shows the external appearance of the remote controller 22. The remote controller 22 is provided with a 12-position key group 23. The 12-position corresponding key group 23 is composed of 12 channel selection keys numbered 1 to 12, and the user can directly select a desired broadcast channel.

  The remote controller 22 is provided with an up / down channel selection key 24 so that an up / down channel selection operation can be realized in various forms to be described later.

  FIG. 3 shows service identification information (16 bits) in the SI information. This service identification information is composed of 6-bit area identification information, 1-bit prefecture multiple flag, 2-bit service type information, 4-bit area operator identification information, and 3-bit service number.

  Of these, the area identification information is information that specifies whether the broadcast is a prefectural area broadcast or a wide area broadcast. The prefectural composite flag is “1” when there is a prefectural composite broadcasting station. The service type information is “0” TV type, “1” / “2” data type (excluding partial reception service), and “3” data type (partial reception service). The partial reception service is a data broadcasting service for portable receivers. The regional operator identification information is identification information of a broadcaster defined for each region identification. A service number of 0 to 7 can be specified for each broadcaster.

The three-digit channel number is calculated from the service type information, remote_control_key_id, and service number. That is,
3-digit channel number = (service type x 200) + (remote_control_key_id x 10)
+ (Service number + 1)
It becomes.

  Here, when the user sets a residential area in the digital television broadcast receiver, the control control circuit 16 sequentially scans physical channels on which terrestrial digital broadcasting is performed, and a plurality of broadcasting stations having the same three-digit channel number. A terrestrial digital broadcast receiving broadcast station table is also created. The broadcast channel up / down channel selection operation is performed with reference to the received broadcast station table.

  FIG. 4 shows an example of a reception broadcast station table when the area identification of the digital television broadcast receiver is 24. That is, this reception broadcast station table is a list in which broadcast station names, area identifications, remote_control_key_id, service types, and 3-digit channel numbers including branch numbers are associated with each other.

  Hereinafter, various types of up / down channel selection operations with reference to the reception broadcast station table shown in FIG. 4 will be described. First, the up / down channel selection operation according to the first embodiment is an up / down channel selection operation in the order of three-digit channel numbers and the same three-digit channel numbers in the order of branch numbers.

  This is because, for example, when an up channel selection is performed from a three-digit channel number including a branch number 011 (0), first, the same three-digit channel number 011 in the ascending order of branch numbers 011 (1), 011 (2 ). Thereafter, the next ascending three-digit channel number 012 is selected as 012 (0), 012 (1), and 012 (2) in ascending order of branch numbers.

  For down channel selection, the operation is the reverse of the above. That is, when down-tuning is performed from a 3-digit channel number including a branch number of 012 (2), first, 012 (1) and 012 (0) are selected in descending order of the branch number from the same 3-digit channel number 012. Bureau. Then, the next descending 3-digit channel number 011 is selected as 011 (2), 011 (1), 011 (0) in descending order of branch numbers.

  As described above, by defining a rule for performing an up / down channel selection operation in the order of three-digit channel numbers and in the order of branch numbers for the same three-digit channel numbers, a plurality of broadcasts having the same three-digit channel numbers can be received. Even in this case, it is possible to perform efficient up / down tuning.

  Next, the up / down channel selection operation of the second embodiment will be described. The up / down channel selection operation of the second mode is first performed in the order of remote_control_key_id, the same remote_control_key_id in the order of branch numbers, and the same branch number in the order of up / down channel selection in the order of three-digit channel numbers. is there.

  For example, when an up channel selection is performed from a 3-digit channel number including a branch number 011 (0), first, in the same broadcast station, that is, remote_control_key_id is “1” and the branch number is (0), Channels 012 (0) and 013 (0) are selected in ascending order of the three-digit channel number.

  After that, in the same remote_control_key_id “1”, for the next ascending branch number (1), the channels are selected as 011 (1), 012 (1), 013 (1) in ascending order of the 3-digit channel number, Furthermore, among the same remote_control_key_id “1”, the next ascending branch number (2) is selected as 011 (2), 012 (2), and 013 (2) in ascending order of the 3-digit channel number. .

  After this 013 (2), the same remote_control_key_id “1” does not exist, and therefore, the next ascending order of remote_control_key_id “2” with the smallest branch number (0) is 021 ( 0), 022 (0).

  For down channel selection, the operation is the reverse of the above. That is, when down-tuning is performed from the 3-digit channel number including the branch number 022 (0), first, in the same remote_control_key_id “2”, the branch number is (0), the descending order of the 3-digit channel number 021 (0) is selected.

  After that, since the same remote_control_key_id “2” does not exist, 013 (2) and 012 (2) in descending order of the three-digit channel numbers for the next branch_number remote_control_key_id “1” having the largest branch number (2). , 011 (2). Further, in the same remote_control_key_id “1”, the next descending branch number (1) is selected as 013 (1), 012 (1), 011 (1) in descending order of the three-digit channel number. . After that, among the same remote_control_key_id “1”, the next descending branch number (0) is selected as 013 (0), 012 (0), 011 (0) in descending order of the 3-digit channel number. .

  In this way, by defining a rule for performing an up / down channel selection operation in the order of remote_control_key_id, in the order of branch numbers for the same remote_control_key_id, and in the order of three-digit channel numbers for the same branch number, the same three digits Even when a plurality of channel number broadcasts can be received, efficient up / down channel selection can be performed.

  Next, the up / down channel selection operation of the third embodiment will be described. The up / down channel selection operation of the third mode is performed in the order of service type, in the order of remote_control_key_id for the same service type, in order of branch number for the same remote_control_key_id, and for the same branch number. This is an up / down channel selection operation in order of three-digit channel numbers.

  For example, when channel selection is performed from a 3-digit channel number including a branch number 031 (0), first, among the service types “0” to which 031 (0) belongs, remote_control_key_id is “3” In the same service type “0”, the next ascending order remote_control_key_id “4” is selected. In this remote_control_key_id “4”, 041 (0) is selected in the ascending order of the three-digit channel number for the smallest branch number (0).

  After that, remote_control_key_id “4” is the largest among the service types “0”, so the service type “1” in the next ascending order is selected, and among these service types “1”, the smallest remote_control_key_id “3” is selected. Is done. Among the remote_control_key_id “3”, 211 (0) is selected in ascending order of the three-digit channel number for the smallest branch number (0).

  Thereafter, since there is no other service type “1” to which 211 (0) belongs, the remote_control_key_id “3” or more does not exist, so the smallest remote_control_key_id “3” in the next ascending service type “2”. Is selected. And in this remote_control_key_id “3”, 411 (0) is selected in the ascending order of the three-digit channel number for the one with the smallest branch number (0).

  For down channel selection, the operation is the reverse of the above. That is, when down-tuning is performed from the three-digit channel number including the branch number from 411 (0), first, among the service types “2” to which 411 (0) belongs, remote_control_key_id is “3” or less. Since there is no other, the largest remote_control_key_id “3” is selected from the next descending service type “1”. And in this remote_control_key_id “3”, 211 (0) is selected in descending order of the 3-digit channel number for the one with the largest branch number (0).

  After that, since there is no other service type “1” with remote_control_key_id “3” or less, the largest remote_control_key_id “4” is selected from the next descending service type “0”. Of the remote_control_key_id “4”, 041 (0) is selected in descending order of the 3-digit channel number for the one with the largest branch number (0).

  Thereafter, since there is no other remote_control_key_id “4” in the service type “0”, the next remote_control_key_id “3” in descending order is selected. Of the remote_control_key_id “3”, 031 (0) is selected in descending order of the 3-digit channel number for the one with the largest branch number (0).

  Thus, in the order of service type, in the order of remote_control_key_id for the same service identification, in the order of the branch number for the same remote_control_key_id, and in the order of up / down channel selection for the same branch number in the order of the three-digit channel number. By defining the rules to be performed, even when a plurality of broadcasts having the same three-digit channel number can be received, efficient up / down channel selection can be performed.

  Next, the up / down channel selection operation of the fourth mode will be described. The up / down channel selection operation of the fourth embodiment is an up / down channel selection operation in the order of branch numbers and in the order of three-digit channel numbers for the same branch number.

  For example, when channel selection is performed from a 3-digit channel number including a branch number 011 (0), first, 012 (0), 013 (0) in ascending order of the 3-digit channel number from the branch number (0). , ..., 211 (0) and 411 (0) are selected.

  Thereafter, when the three-digit channel number of the branch number (0) becomes the maximum, 011 (1), 012 (1), 013 (1) in ascending order of the three-digit channel number from the next ascending branch number (1). Is selected. Further, when the 3-digit channel number of the branch number (1) becomes the maximum, the next ascending order of the branch number (2) starts from the next ascending order of the 3-digit channel number 011 (2), 012 (2), 013 (2) Is selected.

  For down channel selection, the operation is the reverse of the above. That is, when down-tuning is performed from the 3-digit channel number including the branch number 013 (2), first, 012 (2), 011 (2) in descending order of the 3-digit channel number from the branch number (2). Is selected.

  After that, when the 3-digit channel number of the branch number (2) becomes the smallest, 013 (1), 012 (1), 011 (1) in descending order of the 3-digit channel number from the next descending branch number (1). Is selected. Further, when the three-digit channel number of the branch number (1) becomes the maximum, 411 (0), 211 (0),..., 012 in descending order of the three-digit channel number from the next descending branch number (0). (0) and 011 (0) are selected.

  As described above, by defining a rule for performing an up / down channel selection operation in the order of branch numbers and in the order of three-digit channel numbers for the same branch numbers, a plurality of broadcasts with the same three-digit channel numbers can be received. However, it is possible to perform efficient up / down tuning.

  Next, the up / down channel selection operation of the fifth mode will be described. The up / down channel selection operation of the fifth mode is an up / down channel selection operation in the order of branch numbers, in the order of remote_control_key_id for the same branch number, and in order of three-digit channel number for the same remote_control_key_id. .

  For example, when an up channel selection is performed from a 3-digit channel number including a branch number of 011 (0), first, the smallest remote_control_key_id “1” is selected from those having a branch number of (0). Then, in this remote_control_key_id “1”, 012 (0) and 013 (0) are selected in ascending order of the 3-digit channel number.

  When the 3-digit channel number becomes the maximum, the next ascending remote_control_key_id “2” is selected in the same branch number (0), and the ascending order of the 3-digit channel number in this remote_control_key_id “2” is 021 (0 ), 022 (0) is selected.

  In this way, when the 3-digit channel number becomes maximum, the next ascending order remote_control_key_id “3” is selected in the same branch number (0), and in this remote_control_key_id “3”, the ascending order of 3-digit channel numbers 031 (0), 211 (0), and 411 (0) are selected.

  Further, when the three-digit channel number becomes the maximum, the next ascending remote_control_key_id “4” is selected in the same branch number (0), and the ascending order of the three-digit channel number in this remote_control_key_id “4” is 041 (0 ) Is selected.

  Then, since the branch number (0) ends, the smallest remote_control_key_id “1” in the next ascending branch number (1) is selected. Then, in this remote_control_key_id “1”, 011 (1), 012 (1), and 013 (1) are selected in ascending order of the three-digit channel number.

  For down channel selection, the operation is the reverse of the above. That is, when down-tuning is performed from the 3-digit channel number including the branch number 013 (1), first, the largest remote_control_key_id “1” is selected among those having the branch number (1). Then, in this remote_control_key_id “1”, 012 (1) and 011 (1) are selected in descending order of the 3-digit channel number.

  In this way, when the three-digit channel number is minimized, the branch number (1) ends, so the next descending branch number (0) is selected. Then, the largest remote_control_key_id “4” is selected in the branch number (0), and 041 (0) is selected in ascending order of the three-digit channel number in the remote_control_key_id “4”.

  Thereafter, when the 3-digit channel number becomes the smallest, the next remote_control_key_id “3” in the descending order is selected from the same branch number (0), and 411 (0) in the descending order of the 3-digit channel number in the remote_control_key_id “3”. ), 211 (0), 031 (0) are selected.

  Further, when the 3-digit channel number becomes the smallest, the next descending order of remote_control_key_id “2” is selected in the same branch number (0), and 022 (0 in descending order of the 3-digit channel number in this remote_control_key_id “2”. ), 021 (0) is selected.

  After that, when the 3-digit channel number becomes the smallest, the next descending remote_control_key_id “1” is selected from the same branch number (0). Then, in this remote_control_key_id “1”, 013 (0), 012 (0), and 011 (0) are selected in descending order of the three-digit channel number.

  In this way, the same three-digit channel is defined by defining a rule for performing an up / down channel selection operation in the order of branch numbers, in the order of remote_control_key_id for the same branch number, and in the order of three-digit channel number for the same remote_control_key_id. Even when a plurality of broadcasts of numbers can be received, it is possible to perform efficient up / down channel selection.

  The above-described up / down channel selection operations in the five forms have been described as the order of switching the reception channels. For example, in the case of displaying a list of reception channels by GUI (Graphical User Interface), the up / down tuning in the above five forms is performed. It is also possible to display in the order of channel selection.

  Further, the above-described up / down channel selection operations in the five forms can be selectively set by the user operating the remote controller 22.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by variously modifying the constituent elements without departing from the scope of the invention in the implementation stage.

  Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements according to different embodiments may be appropriately combined.

The block block diagram shown in order to demonstrate the embodiment of this invention and to demonstrate the signal processing system of a digital television broadcast receiver. The figure shown in order to demonstrate the external appearance of the remote controller in the digital television broadcast receiver. The figure shown in order to demonstrate the service identification information in SI information contained in the digital television broadcast in the embodiment. The figure shown in order to demonstrate an example of the receiving broadcast station table which the digital television broadcast receiver produced by the channel scan.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Digital antenna, 12 ... Tuner, 13 ... Error correction circuit, 14 ... Scramble control circuit, 15 ... Multiplex data separation circuit, 16 ... Control control circuit, 17 ... MPEG video reproduction circuit, 18 ... MPEG audio reproduction circuit, 19 ... OSD circuit, 20 ... CRT, 21 ... speaker, 22 ... remote controller, 23 ... key group corresponding to 12 positions, 24 ... up / down tuning key.

Claims (5)

When a plurality of broadcast channels each having a channel number are selectively received and a plurality of broadcast channels having the same channel number are received, a different branch number is assigned to each broadcast channel. In the broadcast receiving device to be added,
Channel selection control means for performing a channel selection operation in the order of the channel numbers and in the order of the branch numbers for the same channel numbers in a state where down-tuning of the broadcast channel is requested,
The channel selection control means includes
Down channel selection in which the channel number is switched in descending order in the state where down channel selection of the broadcast channel is requested, and the branch number is switched in descending order within the same channel number when there are a plurality of the same channel numbers. A broadcast receiving apparatus comprising: means.   2. The broadcast receiving apparatus according to claim 1, further comprising a tuner for selecting a predetermined broadcast channel from the terrestrial digital broadcast received by the antenna.   2. The broadcast receiving apparatus according to claim 1, further comprising a remote controller for issuing a request for down-tuning to the channel selection control means.   4. The broadcast receiving apparatus according to claim 1, further comprising display means for displaying a video signal of a channel switched by the channel selection control means. When a plurality of broadcast channels each having a channel number are selectively received and a plurality of broadcast channels having the same channel number are received, a different branch number is assigned to each broadcast channel. In the broadcast receiving method to be added,
In a state where down-tuning of the broadcast channel is requested, the channel number is switched in descending order, and when there are a plurality of the same channel number, the branch number is switched in descending order within the same channel number. A broadcast receiving method characterized by the above.

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