JP2006054538A - Reception management device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide reception management device and program in which the time remaining before starting recording is not required to be altered in succession even when recording of a digital broadcast program is reserved in a vehicle such as an automobile. <P>SOLUTION: As the time information becoming a reference for starting reproduction or recording of a reserved program, conventionally used time information included in a digital broadcast wave is not used but time information obtained by receiving a radio wave from GPS satellites is employed. Operation for altering the time remaining before starting recording, incident to different time information included in the broadcast wave, is not required for every broadcast wave from a receiving relay station, and a user can be released from troublesomeness. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a reception management apparatus and program suitable for use in a digital broadcast receiving apparatus.

  Conventionally, a digital broadcast receiving apparatus receives a transport stream, extracts reservation control information (RCI) for controlling a reserved program for accepting a program reservation, and outputs the reservation screen by superimposing the information on the broadcast program video. To do. In addition, in accordance with an instruction from the viewer, the reservation information for accepting the program reservation and specifying the program is stored, and after recording the program according to the reservation information, if there is a reproduction instruction from the viewer, the reservation information is specified. Play and output the program.

  By the way, in digital broadcasting, a delay of about several seconds is caused by processing such as compression of video and audio and transfer (relay) between bases. In addition, when a digital broadcast is received by a vehicle such as an automobile, the relay station to be received is switched as it moves. FIG. 14 is a diagram showing how the vehicle moves, and the vehicle 100 receives a broadcast wave transmitted from the broadcast station 200 directly or via each relay station 300. When receiving via the relay station 300, as shown in the figure, a delay occurs with respect to a transmission time when the actually presented time is transmitted from the broadcast station 200.

  Also, when performing scheduled recording, since the broadcast wave from the receiving relay station and the time information included in the broadcast wave differ for each broadcast station, it is necessary to sequentially change the remaining time until the start of recording. Conventionally, recording is started based on TDT (Time Data Table) multiplexed in the transport stream, and from start_time (for example, 19:00) and duration (54 minutes) of EIT (Event Information Table) in the transport stream. The end time is calculated, and the recording is ended when the end time is reached (see, for example, Patent Document 1).

JP-A-11-284968

  However, when a digital broadcast program is scheduled to be recorded in a vehicle such as an automobile, as described above, the time information included in the broadcast wave is different for each broadcast wave from the relay station to be received. If the content is not changed sequentially, playback or recording cannot be performed from the beginning of the content, and the operation is troublesome and troublesome.

  The present invention has been made in view of such circumstances, and even when a broadcast program is reproduced or recorded while moving by a vehicle such as an automobile, the reproduction or recording from the beginning to the end of the content is not affected by the delay of the broadcast wave. It is an object of the present invention to provide a reception management apparatus and program capable of recording.

The above object is achieved by the following configuration or program.
(1) In a reception management apparatus that manages time for playing or recording a reserved digital broadcast program, positioning satellite receiving means for receiving radio waves from a positioning satellite and starting to play or record the reserved program Time management means for setting the time reference for the time information included in the radio wave received by the positioning satellite receiving means and the time reference for ending the reproduction or recording as time information included in the digital broadcast wave; .

(2) In a reception management device that manages the time for playing or recording a reserved digital broadcast program, a standard radio wave receiving means for receiving a standard radio wave carrying time information, and playing or recording the reserved program The time reference for starting the time is the time information included in the radio wave received by the standard radio wave receiving means, and the time reference for ending the reproduction or recording is the time information included in the digital broadcast wave Management means.

(3) The digital broadcast receiver includes the reception management device according to (1) or (2).

(4) The car television device includes the reception management device according to (1) or (2).

(5) Time for obtaining time information from a positioning satellite receiver that receives radio waves transmitted from a positioning satellite in a program used in a reception management apparatus that manages the time for playing or recording a reserved digital broadcast program The acquisition procedure and the time reference for starting the playback or recording of the reserved program is the time information acquired in the time acquisition procedure, and the time reference for ending the playback or recording is the digital broadcast wave. And causing the computer to execute a time management procedure that includes the time information included.

(6) Time acquisition for acquiring time information from a standard radio wave receiver that receives a standard radio wave including time information in a program used in a reception management apparatus that manages time for playing or recording a reserved digital broadcast program The procedure and the time reference for starting the playback or recording of the reserved program is the time information acquired in the time acquisition procedure, and the time reference for ending the playback or recording is included in the digital broadcast wave The computer executes a time management procedure for obtaining the time information.

  In the reception management device described in (1) above, the time information included in the digital broadcast wave that has been used conventionally is not used as the time information that is the reference for starting the reproduction or recording of the reserved program. Time information obtained by receiving radio waves from GPS satellites, for example, is used, so even when a broadcast program is played or recorded while moving by a vehicle such as an automobile, the beginning of the content is not affected by the delay of the broadcast wave. Playback or recording can be performed from the end to the end. In addition, since time information obtained by receiving radio waves transmitted from positioning satellites is used, time information with higher accuracy can be obtained as compared with the case where a built-in clock is provided.

  In the reception management device described in (2) above, the time information included in the digital broadcast wave that has been conventionally used is not used as the time information that is the starting reference for the reproduction or recording of the reserved program. Since the time information obtained by receiving the included standard radio wave is used, even when a broadcast program is played or recorded while moving by a vehicle such as an automobile, it is not affected by the delay of the broadcast wave, and it is not affected by the delay of the broadcast wave. Playback or recording can be performed up to the tail. In addition, since the standard radio wave is received and the time information included in the standard radio wave is used, time information with higher accuracy can be obtained compared to the case where a built-in clock is provided.

  The digital broadcast receiving apparatus described in (3) above includes the reception management apparatus described in (1) or (2) above, so that this apparatus is mounted on a vehicle such as an automobile to play a broadcast program or Even when recording, it is possible to reproduce or record from the beginning to the end of the content without being affected by the delay of the broadcast wave. In addition, since time information obtained by receiving radio waves transmitted from positioning satellites or standard radio waves including time information is used, time information with higher accuracy can be obtained as compared with the case where a built-in clock is provided.

  Since the car TV device described in (4) above includes the reception management device described in (1) or (2) above, even when a broadcast program is played or recorded while moving in a vehicle such as an automobile, broadcasting is possible. Playback or recording can be performed from the beginning to the end of the content without being affected by the wave delay. In addition, since time information obtained by receiving radio waves transmitted from positioning satellites or standard radio waves including time information is used, time information with higher accuracy can be obtained as compared with the case where a built-in clock is provided.

  In the program described in (5) above, the positioning information (for example, GPS) is used without using the time information included in the digital broadcast wave that has been used in the past as the time information that is the reference for starting the playback or recording of the reserved program. Time information obtained by receiving radio waves from a satellite) is used, so even when a broadcast program is played or recorded while moving by a vehicle such as an automobile, it is not affected by the delay of the broadcast wave, and it is not affected by the delay of the broadcast wave. Playback or recording can be performed up to the tail. In addition, since time information obtained by receiving radio waves transmitted from positioning satellites is used, time information with higher accuracy can be obtained as compared with the case where a built-in clock is provided.

  In the program described in (6) above, the time information that is the reference for starting the playback or recording of the reserved program does not use the time information included in the digital broadcast wave that has been used in the past, but includes time information. Since the time information obtained by receiving standard radio waves is used, even when a broadcast program is played or recorded while moving on a vehicle such as an automobile, it is not affected by the delay of the broadcast wave, and the content is from the beginning to the end. Playback or recording can be performed. In addition, since the standard radio wave is received and the time information included in the standard radio wave is used, time information with higher accuracy can be obtained compared to the case where a built-in clock is provided.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a digital broadcast receiving apparatus according to an embodiment of the present invention. In this figure, the digital broadcast receiving apparatus according to the present embodiment includes a receiving unit 10, a TS (transport stream) decoder unit 11, an A / V decoder unit 12, a reproducing unit 13, and an audio output unit 14. , Video output unit 15, system table storage unit 16, reservation control information storage unit 17, input reception unit 18, reception control unit 19, reservation information storage unit 20, time management unit 21, GPS reception unit 22.

  The receiving unit 10 receives a transport stream transmitted from a digital broadcast transmitting device (not shown), and inputs only the transport stream corresponding to transport_stream_id specified by the reception control unit 19 to the TS decoder unit 11. The TS decoder unit 11 uses the PID (packet identifier) designated by the reception control unit 19 as a separation condition, and converts each system table such as NIT, SDT, EIT, PAT, and PMT from the transport stream input from the reception unit 10. Extracted and written in the system table storage unit 16.

  In addition, the TS decoder unit 11 extracts presentation information having a PID designated by the reception control unit 19 and inputs it to the A / V decoder unit 12. In addition, the TS decoder unit 11 extracts the RCI using the PID specified by the reception control unit 19 as a separation condition, and writes it in the reservation control information storage unit 20. The A / V decoder unit 12 decodes the presentation information input from the TS decoder unit 11 and inputs it to the reproduction unit 13.

  The playback unit 13 separates the presentation information decoded by the A / V decoder unit 12 into audio data and video data under the control of the reception control unit 19. The reproduction unit 13 converts the separated audio data into an audio signal and inputs the audio signal to the audio output unit 14. Further, the playback unit 13 converts the separated video data into a video signal and inputs the video signal to the video output unit 15 in synchronization with the audio signal. At this time, when the reception control unit 19 is notified of the screen data of the display element information for program reservation, the reproduction unit 13 superimposes the screen data on the separated video data and converts it into a video signal. Input to the output unit 15.

  The audio output unit 14 directly inputs the digital audio signal input from the reproduction unit 13 into an analog audio signal and inputs the analog audio signal to an external speaker (not shown). The video output unit 15 converts the digital video signal input from the playback unit 13 into an analog video signal according to the NTSC system, the PAL system, or the like, and inputs the analog video signal to an external display such as a CRT. Further, when there is a recording instruction from the reception control unit 19, the reproducing unit 13 records (that is, records) a digital audio signal and a digital video signal in a recording device (not shown). Note that the playback unit 13 may output the digital video signal to an external display as it is.

  The system table storage unit 16 includes a RAM or the like, and stores each system table extracted by the TS decoder unit 11. For example, the system table storage unit 16 stores NIT 201, SDT 301, EIT 401, PAT 501, and PMT 601 shown in FIGS. 2 to 6 at 12:00 on January 1, 2004. In addition, when the first episode of the program “Nippon Journey” is reserved by the viewer, at 10:00 on January 1, each system shown in FIGS. 7 to 10 below in addition to the NIT 201 shown in FIG. The table is stored.

  FIG. 7 shows an SDT 701 corresponding to transport_stream_id “2”. FIG. 8 shows an EIT 801 in which the broadcast start time “start_time” of the first episode of the program “Nippon Journey” is described. FIG. 9 shows a PAT 901 corresponding to service_id “9”. FIG. 10 shows a PMT 1001 in which the PID of the presentation information of the first episode of the program “Nippon Journey” is described.

  The reservation control information storage unit 17 includes a RAM or the like, and stores the RCI extracted by the TS decoder unit 11. FIG. 12 shows an RCI 1201 that may be stored in the reservation control information storage unit 17 from 12:00 to 12:05 on January 1, 2004. The RCI 1201 is different from the RCI stored in the digital broadcast transmitting apparatus (not shown) only in that presentation information is identified by a script “change_presentation0x0051” and a packet identifier in the display control information 1202 and 1203.

  Returning to FIG. 1, the input receiving unit 18 receives input signals such as program selection, program recording, and program reservation by a viewer's remote control operation or the like. The received signal is notified to the reception control unit 19. The reception control unit 19 includes a CPU, a ROM that stores a control program for transport stream reception control and RCI interpretation, and a RAM that is a working storage area, and performs processing according to the control program. I do.

  The reservation information storage unit 20 is composed of a nonvolatile RAM or the like, and when the program is reserved by the viewer, the identification number of any one of the program specification information 1204, 1205, and 1206 in the RCI 1201 that specifies the reserved program. Are stored. FIG. 11 shows the stored contents of the reservation information storage unit 20 when the first episode of the program “Nippon Journey” is reserved by the viewer. Reservation information 1101 that is a set of identification numbers (8, 2, 9, 38) is a set of original_network_id, transport_stream_id, service_id, and event_id that identifies the first episode of “Japan Travel”. Of course, when there are a plurality of reserved programs, a plurality of reservation information is stored. Alternatively, the program start_time may be recorded in the reservation information 1101, and extraction of each system table may be started a predetermined time before the start_time.

  Returning to FIG. 1, the GPS receiver 22 receives a radio wave transmitted from a GPS satellite (positioning satellite) via the antenna 23, and inputs time information indicating the current time to the time manager 21. The time management unit 21 manages time and notifies the current time in response to the time inquiry from the reception control unit 19. Here, since the time information included in the broadcast wave is different for each broadcast wave from the receiving relay station, when the broadcast program is reserved for recording, the time management unit 21 acquires the time acquired from the GPS reception unit 22 at the start of recording. Information is notified to the reception control unit 19, and time information acquired from the broadcast wave is notified to the reception control unit 19 at the end of recording. Note that the time information includes year, month, day, and time information.

  The reception control unit 19, time management unit 21, GPS reception unit 22, and antenna 23 constitute a reception management device 30.

  Next, the recording operation of the program reservation in the digital broadcast receiving apparatus having the above configuration will be described with reference to the flowchart of FIG. First, the reception control unit 19 waits for the reservation information 1101 to be stored in the reservation information storage unit 20, and instructs the reception unit 10 to receive a transport stream corresponding to transport_stream_id = 2 described in the reservation information 1101. , PID “0x0012” is notified to the TS decoder unit 11 to instruct EIT extraction. The reception control unit 19 acquires the start_time of the program corresponding to event_id = 38 described in the reservation information 1101 with reference to the EIT 801 stored in the system table storage unit 16.

  The reception control unit 19 inquires of the time management unit 21 about the current time. The time management unit 21 acquires the time from the GPS reception unit 22 and notifies the reception control unit 19 (step S10). The reception control unit 19 refers to the reservation information storage unit 20 (step S11), and determines whether or not the current time notified from the time management unit 21 matches the start time (step S12). If they do not match, the reception control unit 19 returns to step S10, and if they match, the corresponding system table stored in the system table storage unit 16 is referred to and the PID for identifying presentation information is set as a TS decoder. This is notified to the section 11 to instruct the extraction of presentation information.

  The TS decoder unit 11 sends the presentation information of the reserved program to the A / V decoder unit 12. The A / V decoder unit 12 decodes the presentation information and inputs it to the reproduction unit 13. In this case, since it is recording, the digital audio signal and the digital video signal from the reproduction unit 13 are input to a recording device (not shown), and recording is started (step S13).

  That is, the system table storage unit 16 stores the NIT 201 shown in FIG. 2, the SDT 301, the EIT 401, the PAT 501, and the PMT 601 shown in FIGS. Based on each of these system tables, video data and audio data with PIDs “0x0080” and “0x0081” are extracted by the TS decoder unit 11, and recording of the first episode of the reserved program “Nihon no Juku” is started.

  Next, the reception control unit 19 reads the start_time and duration of the EIT 1401 stored in the system table storage unit 16, calculates start_time_duration (reproduction end time), inquires the time management unit 21 about the time, 21 acquires time information from the broadcast wave (step S14).

  Then, the reception control unit 19 refers to the reservation information storage unit 20 (step S15), and determines whether or not the current time notified from the time management unit 21 matches the end time (step S16). If they do not match, the reception control unit 19 returns to step S14 to continue recording. If they match, the reception control unit 19 gives an instruction to stop the extraction of presentation information to the TS decoder unit 11, ends the recording, and reserve information The reservation information stored in the storage unit 20 is deleted, and this process is terminated.

  As described above, according to the digital broadcast receiving apparatus of the present embodiment, the time information included in the digital broadcast wave that has been conventionally used is used as the time information that is a reference for starting the reproduction or recording of the reserved program. First, since time information obtained by receiving radio waves from GPS satellites is used, even when a broadcast program is played or recorded while moving by a vehicle such as an automobile, the start of the content is not affected by the delay of the broadcast wave. Playback or recording can be performed from the end to the end. In addition, since time information obtained by receiving radio waves transmitted from GPS satellites is used, time information with higher accuracy can be obtained compared to the case where a built-in clock is provided.

  In the present embodiment, the time reference for starting the reproduction or recording of the reserved program is the time information included in the radio wave received by the GPS receiver 22, but it is used by a radio clock or the like. Time information included in the standard radio wave may be used. In this case, the device as the standard radio wave receiving means may be replaced with the GPS receiving unit 22.

  Further, although the present embodiment is a digital broadcast receiving device, it may be a car television device or a car navigation system having a television function. In short, any device that can receive digital broadcasts may be used.

  The present invention has an effect that even when a broadcast program is played or recorded while moving on a vehicle such as an automobile, it can be played or recorded from the beginning to the end of the content without being affected by the delay of the broadcast wave. In addition, it can be applied to a digital broadcast receiving device, a car TV device, a car navigation system having a TV broadcast receiver function, and the like.

The block diagram which shows the structure of the digital broadcast receiver which concerns on one embodiment of this invention The figure which shows an example of NIT produced | generated with the digital broadcast transmitter which transmits the broadcast wave which the digital broadcast receiver which concerns on the said embodiment receives The figure which shows an example of SDT produced | generated with the digital broadcast transmitter which transmits the broadcast wave which the digital broadcast receiver which concerns on the said embodiment receives The figure which shows an example of EIT produced | generated with the digital broadcast transmitter which transmits the broadcast wave which the digital broadcast receiver which concerns on the said embodiment receives The figure which shows an example of PAT produced | generated with the digital broadcast transmitter which transmits the broadcast wave which the digital broadcast receiver which concerns on the said embodiment receives The figure which shows an example of PMT produced | generated with the digital broadcast transmitter which transmits the broadcast wave which the digital broadcast receiver which concerns on the said embodiment receives The figure which shows an example of SDT memorize | stored in the system table memory | storage part of the digital broadcast receiver which concerns on the said embodiment. The figure which shows an example of EIT memorize | stored in the system table memory | storage part of the digital broadcast receiver which concerns on the said embodiment. The figure which shows an example of PAT memorize | stored in the system table memory | storage part of the digital broadcast receiver which concerns on the said embodiment. The figure which shows an example of PMT memorize | stored in the system table memory | storage part of the digital broadcast receiver which concerns on the said embodiment. The figure which shows an example of the reservation information memorize | stored in the reservation information storage part of the digital broadcast receiver which concerns on the said embodiment. The figure which shows an example of the reservation control information memorize | stored in the digital broadcast transmitter which transmits the broadcast wave which the digital broadcast receiver which concerns on the said embodiment receives The flowchart for demonstrating the recording operation of the program reservation in the digital broadcast receiver which concerns on the said embodiment Diagram for explaining problems in digital broadcasting transmission / reception system

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Reception part 11 TS decoder part 12 A / V decoder part 13 Playback part 14 Audio | voice output part 15 Video | video output part 16 System table storage part 17 Reservation control information storage part 18 Input reception part 19 Reception control part 20 Reservation information storage part 21 Time Management unit 22 GPS reception unit 23 Antenna 30 Reception management device

Claims (6)

In a reception management device that manages the time for playing or recording a reserved digital broadcast program,
Positioning satellite receiving means for receiving radio waves from positioning satellites;
The time reference for starting the reproduction or recording of the reserved program is set as time information included in the radio wave received by the positioning satellite receiving means, and the time reference for ending the reproduction or recording is a digital broadcast wave. Time management means to be time information included in
A reception management device comprising: In a reception management device that manages the time for playing or recording a reserved digital broadcast program,
Standard radio wave receiving means for receiving standard radio waves with time information,
The time reference for starting playback or recording of the reserved program is set as time information included in the radio wave received by the standard radio wave receiving means, and the time reference for ending the playback or recording is set as a digital broadcast wave. Time management means to be time information included in
A reception management device comprising:   A digital broadcast receiver comprising the reception management device according to claim 1.   A car television device comprising the reception management device according to claim 1. In a program used in a reception management apparatus that manages time for playing or recording a reserved digital broadcast program,
A time acquisition procedure for acquiring time information from a positioning satellite receiver that receives radio waves transmitted from a positioning satellite;
Time information for starting playback or recording of a reserved program is set as the time information acquired in the time acquisition procedure, and time reference for ending the playback or recording is included in the digital broadcast wave A time management procedure and
A program that causes a computer to execute. In a program used in a reception management apparatus that manages time for playing or recording a reserved digital broadcast program,
A time acquisition procedure for acquiring time information from a standard radio wave receiver that receives a standard radio wave including time information;
Time information for starting playback or recording of a reserved program is set as the time information acquired in the time acquisition procedure, and time reference for ending the playback or recording is included in the digital broadcast wave A time management procedure and
A program that causes a computer to execute.

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