JP2008294869A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver capable of performing view reservation setting even on a near video on demand (NVOD) program following a program to which a view reservation has been set, by effectively utilizing services of NVOD without requesting troublesome and complicated work to a user. <P>SOLUTION: Regarding SDT described in program information of a program desired to view, it is verified whether or not an NVOD reference service descriptor and a time-shifted service descriptor that are descriptors about NVOD, are described within the SDT and when there is a description, based on contents of the descriptor described therein, view reservation setting is performed also on a time-shifted NVOD program. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiver that has a broadcast program viewing reservation function and uses information included in data added to a digital broadcast broadcast signal to make a viewing reservation setting.

    With the development of digital technology in recent years, digitalization has also progressed in the field of broadcasting, and digital broadcasting such as terrestrial digital television broadcasting / BS (Broadcasting Satellite) digital broadcasting / CS (Communications Satellite) digital broadcasting has been widely put into practical use. .

  With the spread of digital television broadcasting, analog television broadcasting that has been performed in Japan has been scheduled to be finished by the end of July 2011. After that, multi-channel / high quality / It is planned to completely shift to digital television broadcasting that can realize high functionality (such as providing interactive services).

  In digital television broadcasting such as terrestrial digital television broadcasting, an attempt to provide a useful service to viewers has already been started, and one of such services is NVOD (Near Video On Demand).

  NVOD is a program that delays the start time of a program at regular intervals and broadcasts the same program on another channel, so that even if the viewer misses a desired program for some reason, it can be viewed again from the start of the program. It is a service that provides a broadcasting system that can do this.

  However, this NVOD is not a service such as VOD (Video On Demand) that allows viewers to select and view a program that they want to watch at the time they want to watch, so there are programs that they want to watch and the broadcast start time Channels that receive digital broadcasts, turn on receiving devices such as television receivers that have the function of displaying video, make them available for viewing, and broadcast programs to be viewed It is necessary to take measures such as the method of waiting for the start of the broadcast start time in that state and the method of making the view ready in accordance with the broadcast start time by setting the viewing reservation in advance. There is.

  In addition, as described above, NVOD is a broadcast form in which the start time of a program is sequentially delayed by a certain time interval and the same program is broadcast on another channel. If it is desired to view the broadcast, it is necessary to take the above-mentioned means every time it is desired to view it.

  Furthermore, if the broadcasting time is changed for some reason, it is necessary to reset the viewing reservation set in advance, and these operations described above are troublesome and troublesome for the user.

  In Patent Document 1 described later, program information that is updated in a timely manner is stored in a work memory for each update, a program that is desired to be viewed is registered in the work memory as a reserved program for viewing, and information on the registered reserved viewing program and By comparing with the program information stored in the work memory, it is confirmed whether there is a change in the broadcast start time or broadcast end time of the reserved program, and there is a change in the program information and other reservations already registered When there is no overlap with the date and time of the program, a reception processing reservation device is described that changes the reservation date and time of the reserved program.

  Further, in Patent Document 2 described later, only event_id described in a program table obtained in advance is input at the time of viewing reservation setting, and transmitted to the receiver, thereby setting the viewing reservation setting of the program desired to be viewed. A digital broadcast receiver that can be performed in a short time is described.

  Furthermore, in Patent Document 3 described later, the program information is extracted from the received broadcast signal, and the extracted program information is stored in the first memory. Based on the program information stored in the first memory, It is determined whether or not the program selected by the user is an NVOD program. If the program is an NVOD program, all program information belonging to the NVOD is extracted based on the program information stored in the first memory. There is described a digital broadcast receiver capable of viewing an NVOD program having the shortest elapsed time from the channel selection start time based on the information stored in the memory and stored in the second memory.

JP 2003-169264 A JP-A-10-322607 JP-A-11-164278

  In the above Patent Documents 1 to 3, the program information updated timely and the set viewing reservation information are compared, and if there is a difference, a receiver that changes the reservation content based on the updated program information, By inputting only the event_id and transmitting it to the receiver, it is possible to make a reservation for viewing in a short time, and to determine whether it is an NVOD program based on program information extracted from the broadcast signal. In this case, a digital broadcast receiver capable of viewing the NVOD program having the shortest elapsed time from the broadcast start time is described.

However, in these receivers, when there is an NVOD program that follows a program to be reserved for viewing at the time of the first viewing reservation setting, the viewing reservation setting for the program to be reserved for viewing and the NVOD program that follows the program is simultaneously performed. It is not possible.
For this reason, it is necessary to separately set viewing reservations for each of the following NVOD programs, and the user is required to perform troublesome and complicated work.

  In view of the above-described problems, the present invention follows a program to be reserved for viewing by effectively using the NVOD service without requiring troublesome and cumbersome work for the user at the time of initial viewing reservation setting. It is an object of the present invention to provide a digital broadcast receiver capable of simultaneously setting viewing reservations for NVOD programs.

In the present invention, a channel selection unit for selecting a digital broadcast received from a plurality of transmission sources, a tuner for receiving a broadcast signal of the digital broadcast selected by the channel selection unit, and a broadcast signal received by the tuner In a digital broadcast receiver comprising: a demodulator for demodulating a signal; and a broadcast signal processor for extracting a video signal, an audio signal and a data signal included in the broadcast signal demodulated by the demodulator A viewing reservation setting unit for making a viewing reservation of a program desired to be viewed, a reservation information holding unit for holding viewing reservation information set by the viewing reservation setting unit, and a viewing reservation by the viewing reservation setting unit A program information verification unit for verifying program information of a program, a data signal processing unit for extracting program information included in a data signal extracted by a broadcast signal processing unit, and a data signal processing unit. It is provided with program information holding unit for holding the program information.
Then, the program information verification unit extracts the program information of the viewing reservation target program from the program information held in the program information holding unit when the viewing reservation setting is performed by the viewing reservation setting unit, and the extracted program information Perform verification.
As a result of the verification, when the viewing reservation target program is an NVOD (Near Video On Demand) program, the viewing reservation setting unit simultaneously sets the viewing reservation setting of the viewing reservation target program and the NVOD program following the program, When the viewing reservation target program is not an NVOD program, the viewing reservation setting unit sets viewing reservation only for the viewing reservation target program.

  By doing in this way, when the viewing reservation target program is an NVOD program, it is possible to simultaneously set the viewing reservation for the NVOD program following the viewing reservation target program. Even if it is missed, the viewing reservation setting for the following NVOD program is retained, so that it is possible to watch from the start of the broadcast after the next broadcast time has arrived. Therefore, it is possible to make a viewing reservation setting without requiring troublesome and complicated work.

  In the digital broadcast receiver of the present invention, the program information verification unit verifies the service description table described in the extracted program information, and is described in the NVOD standard service descriptor or the NVOD standard service descriptor in the service description table. Verify whether there is a time-shift service descriptor that time-shifts the service.

  In this way, the user does not need to verify whether or not the program to be reserved for viewing is an NVOD program using the program table. Therefore, the user can use the NVOD service effectively and be troublesome for the user. Viewing reservation setting can be performed without requiring complicated work.

  In the digital broadcasting receiver of the present invention, when a channel different from the channel on which the program reserved for viewing is selected when the broadcast start time of the program for which viewing reservation is set in advance is reached, the viewing reservation is selected. A display prompting the user to change the channel to the channel on which the program is broadcast is displayed.

  In this way, even if the user is obsessed with other broadcasts and forgets to start a program reserved for viewing, it is possible to avoid missing a program for which viewing reservation settings have been set in advance.

According to the present invention, the program information of the viewing reservation target program is verified. As a result of the verification, if the viewing reservation target program is an NVOD program, the viewing reservation is simultaneously performed for the NVOD program following the viewing reservation target program. Settings can be made.
Therefore, by making effective use of the NVOD service without requiring troublesome and complicated work from the user, the viewing reservation setting can be made for the NVOD program that follows the program for which the viewing reservation setting has been made.

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

FIG. 1 is a block diagram showing an example of a digital broadcast receiver according to the present invention.
In the figure, 100 is a digital broadcast receiver that receives digital broadcasts, 1 is a microprocessor that controls the entire digital broadcast receiver 100, 2 is a power supply unit that supplies power to each unit in the digital broadcast receiver 100, A channel selection unit for selecting a digital broadcast to be received from a plurality of transmission sources, 4 an antenna for receiving radio waves of the digital broadcast, and 5 a digital broadcast signal selected by the channel selection unit 3 via the antenna 4 A tuner 6 for receiving, a demodulator for demodulating the broadcast signal received by the tuner 5, and a broadcast signal processing 7 for extracting a video signal, an audio signal and a data signal from the broadcast signal demodulated by the demodulator 6. Part.

In the video signal processing unit 8, image processing is performed on the video signal extracted from the broadcast signal by the broadcast signal processing unit 7, and the video signal subjected to the image processing is an LCD connected to the digital broadcast receiver 100. (Liquid Crystal Display) 9
Similarly, in the audio signal processing unit 10, audio processing is performed on the audio signal extracted from the broadcast signal by the broadcast signal processing unit 7, and the audio signal subjected to the audio processing is sent to the digital broadcast receiver 100. Output to the connected speaker 11.

In the data signal processing unit 12, program information and other information are extracted from the data signal extracted from the broadcast signal by the broadcast signal processing unit 7.
Other information extracted by the data signal processing unit 12 is subjected to information processing corresponding to the information in the information processing unit 13, and the program information extracted by the data signal processing unit 12 is obtained from, for example, a memory or the like. It is held in the configured program information holding unit 14.

Reference numeral 16 denotes a viewing reservation setting unit that reserves viewing of a program based on a user operating a setting button (not shown) provided on the front panel or remote control of the digital broadcast receiver 100. 15 is a program for extracting the program information of the viewing reservation target program from the program information held in the program information holding unit 14 and verifying the extracted program information when the viewing reservation setting unit 16 sets the viewing reservation. It is an information verification unit.
Reference numeral 17 denotes a reservation information holding unit that holds the viewing reservation information set by the viewing reservation setting unit 16, and is constituted by a memory, for example.

  FIG. 2 is a flowchart showing a viewing reservation setting procedure by the digital broadcast receiver 100 described above.

  In step S1, the user refers to a list of programs published in a newspaper or the like, or displays a program table (not shown) created based on program information held in the program information holding unit 14 on the LCD 9, By selecting the program, the program desired to be viewed is selected.

In step S2, the viewing reservation setting unit 16 is operated by the user, and a setting screen for setting the viewing reservation is displayed on the LCD 9, whereby the viewing reservation setting is started.
The setting screen displayed on the LCD 9 is, for example, as shown in FIG.

  3, 200 is a viewing reservation setting screen displayed on the LCD 9, 20 is a program table listing program information held in the program information holding unit 14, 21 is a viewable channel name, 22 is a program broadcast time, 23 is a program to be broadcast, 24 is a viewing reservation setting field for making a viewing reservation for the program, 25 is a display screen for displaying the program being viewed by the user, 26 is a reservation determination button for determining a designated reservation, and 27 is a setting content. Is a cancel button, and 28 is an end button for ending the display of the viewing reservation setting screen 200.

In step S3, the user operates a setting button provided on the above-described front panel or remote control, so that a program to be reserved for viewing is selected from each program 23 in the program table 20 shown in FIG. 3 (in FIG. 3). Is an F ** recipe that starts broadcasting at 18:00), an outline of the selected program is displayed in the viewing reservation setting field 24 (in FIG. 3, the broadcast start time and the broadcast program name are displayed).
Program information relating to a program selected as a viewing reservation target program is extracted from the program information holding unit 14 by the program information verification unit 15, and is described in the extracted program information (Service Description Table; hereinafter referred to as SDT). (Abbreviation) is verified.
The SDT to be verified is, for example, as shown in FIG.

  Here, in FIG. 4, 30 is an SDT in which an organization channel name, a broadcaster name, etc. are described, 31 is an example of a descriptor described in SDT 30, and an NVOD standard indicating a list of services constituting the NVOD service A service descriptor (Near Video On Demand Reference Descriptor) 32 is an example of a descriptor described in the SDT 30 as in the case of 31, and is a time-shift service descriptor for time-shifting the service described in the NVOD reference service descriptor 31. (Time Shifted Service Descriptor) 33 is an example showing details of the NVOD standard service descriptor 31 and the time shifted service descriptor 32, and an event information table in which information about the program such as program name, broadcast date and time, and program content is described. (Event Information Table; hereinafter abbreviated as EIT), 34 is attached to each EIT 33 A D (Identification).

  In step S4, it is verified whether or not the NVOD standard service descriptor 31 and the time shift service descriptor 32, which are descriptors related to NVOD, are included in the SDT 30 verified in step S3. : YES), the process proceeds to step S5, and if not described (step S4: NO), the process proceeds to step S7 and subsequent steps.

  In step S5, it is determined whether or not the viewing reservation is executed for the NVOD program to be time-shifted in addition to the reservation target program. When the user operates the setting button provided on the above-described front panel or remote control and selects whether or not the NVOD setting is set in the viewing reservation setting field 24 shown in FIG. (Step S5: YES), the process proceeds to Step S6. If “No” (Step S5: NO), the process proceeds to Step S7 and subsequent steps.

  In step S6, the reservation reservation button 26 shown in FIG. 3 is used to reserve viewing of the NVOD program that is time-shifted in addition to the program to be reserved for viewing.

  In step S7, the reservation determination button 26 is used to make a viewing reservation only for the program that is to be reserved for viewing.

  In step S8, the display of the viewing reservation setting screen 200 is terminated by the end button 28, and the viewing reservation of the program desired to be viewed is completed.

  FIG. 5 is a flowchart showing from a viewing start to a viewing end of a preset viewing reservation program.

  In step S11, it is determined whether or not the main power supply of the digital broadcast receiver 100 is ON before the preset viewing reservation date and time arrives (for example, 3 minutes before), and if the main power supply is ON (step S11). : YES), the process proceeds to step S12, and if it is OFF (step S11: NO), in preparation for the arrival of the broadcast date and time of the next NVOD program to be time-shifted.

  In step S12, the viewing reservation execution mode for executing the viewing reservation is automatically activated.

  In step S13, it is determined whether or not the channel selection state of the digital receiver 100 is a channel selection state different from the viewing reservation content. If the channel selection is different (step S13: YES), the process proceeds to step S14. If the channel selection state is not different (step S13: NO), the process proceeds to step S16 and thereafter.

In step S14, in order to execute a preset viewing reservation, a display prompting channel change to a channel on which the program reserved for viewing is broadcasted (for example, “The channel you are viewing is not a reserved channel. ○ ”.
In this case, the display content is displayed on the LCD 9 connected to the digital broadcast receiver 100.

  In step S15, it is determined whether or not to view the program reserved for viewing. Based on the display in step S14, the user changes the channel and selects whether or not to view the program reserved for viewing. When viewing (step S15: YES), the process proceeds to step S16 and the channel is not changed. When not viewing (step S15: NO), the process proceeds to step S18 and thereafter.

  In step S16, when the viewing reservation date and time arrives, viewing based on a preset viewing reservation is started, and viewing ends in step S17.

  In step S18, regarding the NVOD program that is time-shifted after the end of viewing in step S17, the user selects whether or not to continue the viewing reservation, and if the viewing reservation is continued (reviewing is desired) ( (Step S18: YES), in order to prepare for the arrival of the broadcast date and time of the next time-shifted NVOD program, the process returns to Step S11, and when the viewing reservation is not continued (does not desire to watch again) (Step S18: NO) The process proceeds to step S19.

  In step S19, the user operates a setting button provided on the above-described front panel or remote control to display a viewing reservation setting list (not shown) on the LCD 9, and cancels the viewing reservation of a program that does not desire continuous viewing.

As described above, in the above-described embodiment of the present invention, regarding the SDT described in the program information of the program desired to be viewed, the NVOD standard service descriptor and the time shift service descriptor that are descriptors related to NVOD in the SDT. If there is a description, the NVOD program that is time-shifted based on the contents of the descriptor is also viewed at the same time as setting the viewing reservation for the program that you want to view. Reservation settings can be made.
For this reason, by making effective use of the NVOD service without requiring troublesome and complicated work from the user, it is possible to simultaneously set the viewing reservation for the NVOD program following the viewing reservation target program.

  In the above embodiment, the digital broadcast receiver 100 is taken up as a single unit, but the digital broadcast receiver of the present invention may be incorporated in a main video device or sub-video device such as a television receiver or STB (Set Top Box). Is possible.

  Further, in the above embodiment, when a different channel is selected before the broadcast start date and time of the broadcast reserved for viewing, the display for prompting the channel change is displayed, but the item for forcibly changing the channel is displayed. By providing it on the viewing reservation setting screen (not shown) and specifying at the time of viewing reservation setting, for example, even when a doze is performed when the reservation date and time arrives, it is possible to start viewing the program for which viewing setting has been made it can.

  Furthermore, in the present invention, the reservation content held in the reservation information holding unit is shared with a DVD (Digital Versatile Disk) recorder (not shown) or the like to record a program to be viewed in conjunction with a preset viewing reservation. It is also possible.

It is the block diagram which showed an example of the digital broadcast receiver which concerns on this invention. It is a flowchart which shows the viewing-and-listening setting procedure by the digital broadcast receiver which concerns on this invention. It is an example of the setting screen at the time of performing viewing reservation setting. It is a figure which shows an example of the service description table described in program information, and an event information table. It is a flowchart from the viewing start to the viewing end based on the set viewing reservation.

Explanation of symbols

7 broadcast signal processing unit 12 digital signal processing unit 14 program information holding unit 15 program information verification unit 16 viewing reservation setting unit 17 reservation information holding unit 20 program table 30 service description table 31 NVOD standard service descriptor 32 time shift service descriptor 33 Event information table 100 Digital broadcast receiver 200 Viewing reservation setting screen

Claims (3)

A channel selection unit for selecting a digital broadcast received from a plurality of transmission sources;
A tuner for receiving a broadcast signal of a digital broadcast selected by the channel selection unit;
A demodulator for demodulating the broadcast signal received by the tuner;
A broadcast signal processing unit for extracting a video signal, an audio signal, and a data signal included in the broadcast signal demodulated by the demodulation unit;
In a digital broadcast receiver equipped with
A viewing reservation setting section for making a viewing reservation for a program desired to be viewed;
A reservation information holding unit for holding the viewing reservation information set in the viewing reservation setting unit;
A program information verification unit for verifying program information of a program reserved for viewing by the viewing reservation setting unit;
A data signal processing unit for extracting program information included in the data signal extracted by the broadcast signal processing unit;
A program information holding unit for holding the program information extracted by the data signal processing unit,
The program information verification unit extracts program information of a viewing reservation target program from the program information held in the program information holding unit when the viewing reservation setting is performed by the viewing reservation setting unit, and the extracted program Verify the information,
As a result of the verification, when the viewing reservation target program is an NVOD (Near Video On Demand) program, the viewing reservation setting unit simultaneously sets the viewing reservation setting of the viewing reservation target program and the NVOD program following the program. And when the viewing reservation target program is not an NVOD program, the viewing reservation setting unit sets a viewing reservation setting for only the viewing reservation target program. The digital broadcast receiver according to claim 1, wherein
The program information verification unit verifies a service description table described in the extracted program information, and time-shifts the NVOD standard service descriptor in the service description table or the service described in the NVOD standard service descriptor. A digital broadcasting receiver characterized by verifying the presence or absence of a time shift service descriptor. The digital broadcast receiver according to claim 1, wherein
If a channel different from the channel on which the program is broadcast is selected when the broadcast start time of the program for which the viewing reservation setting has been set in advance, the channel selection to the channel on which the program is broadcast is changed. A digital broadcast receiver characterized by a prompting display.

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