JP2007312151A - Program guide display device, program guide display method and digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To promptly display a program guide based on highly reliable program information to a display request for the program guide in an on-vehicle digital broadcast receiver etc. <P>SOLUTION: This program guide display device displays program information accumulated at the time to the display request for the program guide. At this time, display attributes (such as character size, character colors or background colors) of a program are changed and displayed according to elapsed time after the program information is updated. Thus, a user learns whether or not each piece of program information of the program guide is a new piece of information and understands its reliability. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiving apparatus, and a program guide display device and method for displaying a program guide (including a back program guide).

  In digital broadcasting, an encoded image or sound called ES (Elementary Stream) is divided into a certain size into packets called PES (Packetized Elementary Stream), which are in a multiple signal format called TS (Transport Stream). Multiplex. TS is obtained by dividing PES into 188-byte fixed-length packets called transport packets. As a result, it is possible to simultaneously transmit a plurality of programs in one frequency band, and it is possible to broadcast more programs than in the analog system.

  Since a TS includes a plurality of programs, information about what programs exist in the TS and which service each ES included in the TS belongs to is necessary. Therefore, program specifying information called PSI (Program Specification Information) is inserted into the TS. In digital broadcasting in Japan, for the convenience of program selection, PSI is further expanded to define program arrangement information called SI (Service Information) including more detailed program information. The SI defines a plurality of tables classified for each type of information, and one of them is an EIT (Event Information Table) which is a table describing information for creating a program table. .

  In the EIT, for each program, various information related to the program such as a program name, a broadcast start date and time, a program length, and program contents are described. In EIT operated by digital terrestrial broadcasting, there is a table called EITp / f in which program information relating to the current broadcast program of the own station and program information relating to the next program is described, and program information relating to the subsequent program of the own station. A table called EITsch (EITschule) described is used in a distinguished manner. EITp / f is retransmitted every few seconds, but EITsch is retransmitted every few minutes, and the EITsch retransmission cycle becomes longer for programs that are scheduled to be broadcast later (future).

  In addition, Japanese digital broadcasting uses a transmission system that is resistant to multipath and fading, and is therefore being applied to in-vehicle or mobile digital broadcast receivers. As with home digital broadcast receivers, in-vehicle digital broadcast receivers that have already been put to practical use, a program table that allows users to browse programs scheduled to be broadcast on each channel and programs on each channel that is currently being broadcast A possible program guide (called a back program guide) can be seen (for example, Non-Patent Document 1).

Matsushita Electric Industrial Co., Ltd., “Strada [Strada] Car TV TU-DTV100”, [online], [Search April 20, 2006], Internet, <URL: http://panasonic.jp/car/av/products /TV/tu-dtv100/tokucho.html>

  Here, in-vehicle digital broadcast receivers, unlike home (installation type) receivers, are not always turned on, so program information is not updated frequently, resulting in digital broadcast reception. There is a possibility that the program information stored in the apparatus becomes old and changes in the broadcast schedule are not sufficiently reflected. Therefore, the program information displayed in the program guide may differ from the program that is actually broadcast.

  In addition, if a vehicle equipped with a digital broadcast receiver moves outside the service area of a channel that has been received and cannot receive that channel, select the service displayed in the program guide. May not be received.

  In response to such a problem, when a program guide display request is made, if the program guide is displayed after all the program information of the channels to be displayed is collected, the correct program information of the currently receivable channel is displayed. Can be displayed. However, in this method, since the program guide cannot be displayed until the program information is collected, it takes time to display the program guide. Also, when a program guide display request is made, if the vehicle is in a place where it cannot be temporarily received such as behind a tunnel or a building, information on services that can be actually received may be missed.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to display a program guide based on program information promptly and with high reliability in response to a program guide display request. There is.

  The program guide display device according to the present invention comprises: storage means for storing program information for displaying a program guide; information indicating the update time of the program information; and display control means for displaying the program guide. And display control means for performing control to display the program information included in the program guide with a display attribute corresponding to an elapsed time since the program information was updated.

  The program guide display method according to the present invention is a program guide display method for displaying a program guide using storage means for storing program information for displaying the program guide and information indicating the update time of the program information. And displaying the program guide, wherein the program information included in the program guide is displayed with a display attribute corresponding to an elapsed time since the program information was updated. .

  According to the present invention, since the program information stored in the storage means is displayed when the program guide display request is received, the program guide is displayed after all the program information is collected. The program guide can be displayed quickly. Further, since the program information included in the program guide is displayed with a display attribute corresponding to the time since the update, the user who viewed the program guide has new information (that is, highly reliable information) for each program information. You can know whether or not.

Embodiment 1 FIG.
1 (A) to 1 (F) are diagrams showing a transition of a program guide screen in the program guide display device according to Embodiment 1 of the present invention. FIG. 2 is a diagram illustrating a configuration of a remote controller that is an input device of the program guide display device according to the first embodiment. FIG. 3 is a block diagram showing a basic configuration of a digital broadcast receiving apparatus including the program guide display apparatus according to the first embodiment.

  As shown in FIG. 2, a remote controller (hereinafter referred to as a remote controller) 60 includes numeric buttons 61 for switching services (organization channels), direction buttons 62 for operating a program guide and a menu screen, A program guide button 63 for displaying a program guide for browsing information on programs scheduled to be broadcast on the channel, and a back program guide button 64 for displaying a back program guide for browsing information on programs currently broadcast on each channel. And.

  As shown in FIG. 3, the digital broadcast receiver includes an antenna 100, a tuner 101, a demodulator 102, a demultiplexer 103, an audio decoder 104, a video decoder 105, a graphics processor 106, An audio output unit 107 and a video output unit 108 are provided. The digital broadcast receiver further includes an input / output interface 109, a CPU 110 as display control means, a program information storage device (memory) 111 as storage means, a ROM 112, a RAM 113, and a bus 114.

  The input / output interface 109 receives an operation signal issued from the remote controller 60, and this operation signal is sent to the CPU 110 via the bus 114. The CPU 110 analyzes the received operation signal and sends a channel processing command to the tuner 101. The tuner 101 extracts a broadcast signal having a frequency corresponding to a channel designated by a command from the CPU 110. The demodulator 102 demodulates the broadcast signal extracted by the tuner 101 and outputs a TS (transport stream). The demultiplexer 103 separates the TS output from the demodulator 102 into video and audio. The video decoding device 105 and the audio decoding device 104 decode the video and audio decomposed by the demultiplexer 103, respectively, and output them to the video output unit (monitor) 108 and the audio output unit 107. When outputting the video decoded by the video decoding device 105 to the video output unit 108, the graphics processing device 106 superimposes and displays a GUI screen or the like.

  The CPU 110 decodes the control information stream output from the demultiplexer 103, extracts EIT, which is information for creating a program guide, from the SI information, and stores it in the program information storage device 111. In current Japanese terrestrial digital broadcasting, EIT (EITp / f) related to a program being broadcast and the next program is retransmitted in units of several seconds, and EIT (EITsch) related to subsequent programs is retransmitted in units of minutes. The CPU 110 updates the program information held in the program information storage device 111 every time the EIT is retransmitted.

  Further, when receiving an operation signal from the remote controller 60 to display the program guide or the back program guide, the CPU 110 controls the graphics processing unit 106 and displays the program guide or the back program guide on the video output unit 108. Let Note that the basic configuration of the digital broadcast receiving apparatus shown in FIG. 3 is merely an example, and can be changed as appropriate.

  Next, how the program guide screen displayed on the video output unit 108 is changed by the operation of the remote controller 60 will be described with reference to FIGS. Here, it is assumed that the TV broadcast screen 11 is displayed as shown in FIG. When the user presses the program guide button 63 (FIG. 2) of the remote controller 60, the program guide screen 12 shown in FIG. 1 (B) is displayed. The program guide screen 12 includes a service name (organization channel name) 1 of the currently selected channel, program information 2 (program title, broadcast start time, end time) regarding the currently viewed program, and current time 3 Is displayed.

  The program guide screen 12 further displays a program currently being broadcast and a program scheduled to be broadcast thereafter in time series. In the program guide screen 12 of FIG. 1, two hours of program start times and program names are displayed for the three services, but the number of services to be displayed and the time width are considered in view of ease of viewing. It can be set arbitrarily. In the program guide screen 12, the date selection button 4 is arranged so that eight days can be displayed. For example, in the program guide that displays only one day, the date selection button 4 is not arranged. May be.

  As described above, since the retransmission cycle is different between EITp / f and EITsch, and because the EIT cannot be received for a service with a different TS from the selected service (in the case of terrestrial digital broadcasting), the program information storage device 111 In the program information stored in, there are new information that has just been updated, and old information that has passed since the update.

  Therefore, on the program guide screen 12, the background color of the program information is changed according to the freshness (newness) of the program information stored in the program information storage device 111. That is, since the program information 6 of the service currently being viewed (TV Kansai) is new program information, the background color is white. On the other hand, since the program information 7 and 8 of the service that is not viewed (every morning broadcast, TV Kyoto) has passed for a certain period of time since the last updated time, it is determined that the information is old and the background color is gray. To do.

  The program guide screen 12 expresses a difference in freshness of program information by changing the background color. For example, a method of changing the size or color of characters, a method of changing the thickness or color of a frame, or A method of blinking characters, a frame or a background is also conceivable. Moreover, you may combine these suitably. Any method may be selected as long as it can inform the user of the difference in freshness of the program information.

  FIG. 1C shows the program guide screen 12 when the program guide is displayed immediately after switching the service from the state shown in FIG. 1B (here, immediately after switching from TV Kansai to broadcasting every morning). . In the selected service (broadcast every morning), the program information 5 that is currently being viewed and the program information 9 of the next program can be received immediately after channel selection because EITp / f with a short retransmission cycle is selected, so that the background color is white. . On the other hand, since the program information 7 of the program starting from 11:00 is transmitted by EITsch having a long retransmission cycle, it cannot be received at this time, and the background color is gray.

  FIG. 1D is a diagram showing a program guide screen 12 when EITsch is received after a lapse of time from the state shown in FIG. By receiving the EITsch, the background color of the program information 7 of the program after the program being viewed in the selected service is changed from gray to white.

  FIG. 1E is a diagram showing the program guide screen 12 when the user operates the date button of the program guide and presses the button 10 of 3/7 (March 7). When the 3/7 date button 10 is pressed, since the EITsch has not been received yet, the background color of the program information 6, 7, 8 is displayed in gray.

  FIG. 1 (F) is a diagram showing a program guide screen 12 when EITsch is received after a lapse of time from the state of FIG. 1 (E). By receiving the EITsch, the background color of the program information 7 is changed from gray to white.

  The transition of the program guide screen 12 described with reference to FIGS. 1A to 1F is based on data stored in the program information storage device 111 of the received EIT. FIG. 4 is a diagram showing a data structure of data for creating a program table stored in the program information storage device 111.

  In analog broadcasting, only one program can be transmitted on one channel (referred to as one organization channel), but in digital broadcasting, a plurality of programs can be transmitted simultaneously on one physical channel (referred to as multiple organization channels). This organized channel is defined as a service. Each record 32 in the service information table 31 has a one-to-one correspondence with a physical channel. The record 32 includes an identifier TS_ID 33 assigned to the TS, a physical channel number 34, and n pieces of service information 35. The value of n is specified in the technical document TR-B14 formulated by the Radio Industry Association (ARIB).

  Further, each service information 36 included in the n pieces of service information 35 includes SERVICE_ID 37 that is an identifier for identifying each service in the TS, and valid data of the program information table 42 that stores the program information. It is composed of a start record number 38 indicating the first record, an end record number 39 indicating the last record of valid data, a storage number 40 indicating the number of valid data, and a representative service identification 41 indicating whether it is a representative service. . The representative service refers to a service assigned to the numeric number of the remote controller among a plurality of services in the TS.

  One program information table 42 exists for each service. Each record 43 in the program information table 42 includes a broadcast start time 45 of the program, a program length 46 indicating the broadcast time, a program name 47 indicating the name of the program, a program description 48 indicating the contents of the program, and the presence or absence of subtitles. And a program attribute 49 indicating a sound mode such as stereo, and an update date and time 44 indicating the timing at which these pieces of information are received and stored. In the program information table 42, the records are stored while being incremented. When the last record is stored, the next record is overwritten on the first record, and thereafter, the record is incremented and stored. After writing a new record, the end record number 39 in the service information table 31 is updated. The start record number 38 of the service information table 31 is updated when the start time of the next program has passed.

  Data for creating a program table is constructed by the service information table 31 and the program information table 42 created as described above.

  FIG. 5 is a flowchart showing a process of displaying a program guide using the above-mentioned program guide creation data. FIG. 6 is a flowchart showing a process of acquiring the start record number of the program information table, which is executed in the process of FIG. FIG. 7 is a flowchart showing a process for determining the freshness of the program information, which is executed in the process of FIG.

  When the user presses the program guide button 63 on the remote controller 60 (FIG. 2), the program guide display process shown in FIG. 5 is executed. In order to extract the program information of the service currently being viewed, it is necessary to specify the record of the program information table 42, so the TS_ID and service ID of the service currently being viewed are acquired (step S21), and the data The process of acquiring the start record number 38 of the program information table 42 is executed (step S22).

  In the start record number acquisition process (step S22), as shown in FIG. 6, the TS_ID is searched from the service information table, the record number including the TS_ID is specified (step S61), and further included in the record. The service ID is searched to obtain the start record number of the service (step S62).

  After obtaining the start record number, the process returns to the processing of FIG. 5, and the update date 44 is obtained by referring to the record specified by the start record number 38 in the program information table 42 corresponding to the service ID (step S23). Freshness determination processing is executed (step S24).

  In the information freshness determination process (step S24), as shown in FIG. 7, the elapsed time since the program information was last updated is calculated from the update date 44 and the current date (step S71) and compared with the reference time. (Step S72). If the elapsed time is longer than the reference time (YES in step S72), it is determined as old information (step S74). If the elapsed time is less than the reference time (NO in step S72), it is determined as new information. (Step S73).

  Based on the determination result of the information freshness determination process (step S24), in step S25 shown in FIG. 5, display attributes (drawing attributes) such as background color, character color, and character size to be displayed on the program guide are determined, and the program guide screen is displayed. 12 shows the program information of the program (step S26). In the example of FIG. 1 described above, the background color of old program information is displayed in gray, and the background color of new program information is displayed in white.

  Subsequently, the record number of the program information table 42 to be referred to next is set (step S27) and compared with the end record 39 of the service information table 31 (step S28). If the end record 39 has not been reached (NO in step S28), the update date and time is obtained from the next record in the program information table 42 (step S23), and the processes in steps S24 to S28 are repeated. If the end record 39 has been reached in step S28 (YES in step S28), it is checked whether there is a next service to be displayed on the program guide (step S29). If the next service exists (NO in step S29), the next service is specified from the service information table 31 (step S30), and the processes in steps S22 to S30 are repeated. In step S29, when there is no next service to be displayed on the program guide (YES in step S29), the program guide display processing is terminated.

  As described above, according to the first embodiment, all program information is collected in order to display the program information stored in the program information storage device 111 at the time when the program guide display request is received. Compared with the case where the program guide is displayed later, the program guide can be displayed quickly.

  Further, since the freshness of each program information included in the program guide is displayed, the user knows whether each program information included in the program guide is new information that has just been updated or old information that has elapsed since the update. Thus, the reliability of the program information can be grasped.

  Further, since the freshness of the information in the program guide is expressed by changing the display attributes (background color, etc.), the freshness of the program information can be conveyed in an easy-to-understand manner by appealing to the user's vision.

Embodiment 2. FIG.
While the program guide is displayed, the EIT is periodically transmitted, and the program information table 42 (FIG. 4) is updated accordingly. Therefore, in the second embodiment, the program guide is updated in accordance with the update of the program information table 42.

  FIG. 8 is a flowchart showing a program guide update process according to Embodiment 2 of the present invention. The program guide display apparatus according to the second embodiment has a timer that emits a signal at regular intervals in addition to the same configuration as that of the first embodiment.

  The update process of the program guide screen shown in FIG. 8 is started by a time signal issued from the timer at regular intervals. In the update process of the program guide screen, first, the TS_ID and SERVICE_ID of the service displayed in the program guide are acquired (step S81), and the start record number 38 of the program information table 42 is acquired from the data. Is performed (step S82). The acquisition process of the start record number 38 is as described with reference to FIG. 6 in the first embodiment.

  Next, in the program information table 42 corresponding to the service ID, the update date and time is acquired with reference to the record specified by the start record number 38 (step S83), and information freshness determination processing is performed (step S84). This information freshness determination process is as described with reference to FIG. 7 in the first embodiment.

  Based on the freshness information determined in step S84, it is determined whether the freshness of the program information has changed from the state displayed on the program guide screen 12 (step S85). If the freshness has changed, display attributes such as background color, character color, and character size displayed on the program guide screen 12 are determined (step S86), and the display of program information is updated (step S87). When the freshness has not changed, the display of the program information on the program guide screen 12 is not changed.

  Subsequently, the record number of the program information table 42 to be referred to next is set (step S88) and compared with the end record 39 of the service information table 31 (step S89). If the end record 39 has not been reached (NO in step S89), the update date and time is acquired from the next record in the program information table 42 (step S83), and the processes in steps S84 to S89 are repeated. If the end record 39 has been reached in step S89 (YES in step S89), it is checked whether there is a next service to be displayed on the program guide (step S90), and if the next service exists. (NO in step S90), the next service is specified from the service information table 31 (step S91), and the processes in steps S82 to S91 are repeated. If the next service does not exist in step S90 (YES in step S90), the program table update process is terminated.

  As described above, according to the second embodiment, when the EIT is received while the program guide is displayed and the program information table 42 is updated, the freshness of the corresponding program information in the program guide is displayed. Since the display is also updated, the latest program information obtained by EIT can always be displayed, and the freshness reliability of the program information can be improved.

Embodiment 3 FIG.
The third embodiment relates to a method for displaying a back program guide. The “back program guide” is a table for browsing program information of a program currently being viewed and program information of other programs currently being broadcast.

  FIGS. 9A to 9F are diagrams showing transition of the back program guide screen in accordance with the operation of the remote controller 6 (FIG. 2) in the third embodiment. The process from the digital broadcast TV broadcast screen until the back program guide screen is displayed is the TV broadcast described in the first embodiment except that the back program guide button 64 is pressed instead of the program guide button 63. Since it is the same as the process from the screen 11 to the display of the program guide screen 12 (FIG. 1), the illustration and description are omitted.

  The program displayed on the back program guide screen 27 is a program currently being broadcast which is a representative service of each TS. In FIG. 9A, the program information 21 of the program of the representative service 011ch currently being viewed is displayed at the top. The program information 22 and 23 displayed second and third are program information currently being broadcast by the representative services 021ch and 041ch registered in the service information table 31.

  On the back program guide screen 27, the program information stored in the program information storage device 111 (FIG. 3) is represented by a background color corresponding to its freshness. Since the program information 21 of the service 011ch currently being viewed is new program information, the background color is white. Since the program information 22 and 23 of the services 021ch and 041ch that are not currently viewed has passed a predetermined time or more from the updated time, it is determined as old information and the background color is gray.

  The back program guide screen 27 expresses a difference in freshness of program information by changing the background color. For example, a method of changing the size or color of characters, a method of changing the thickness or color of a frame, Or the method of blinking a character, a frame, or a background etc. can be considered. Moreover, you may combine these suitably. Any method may be selected as long as it can inform the user of the difference in freshness of the program information.

  FIG. 9B shows a state in which the program information 24 of the representative service 241ch registered in the service information table 31 is added. In this example, since the program currently being broadcast could not be found from the program information table 42 of the representative service 241ch, channel selection processing (tuning) for receiving the broadcast wave of the physical channel corresponding to the service is performed, and EITp / Assume that f is received and the program information is updated. By receiving EITp / f, the background color of the program information 24 is displayed in white (background color representing the latest information).

  FIG. 9C shows a state in which the program information 25 of the representative service 061ch registered in the service information table 31 is added. In this example, since the program currently being broadcast could not be found from the program information table of the representative service 061, the channel selection process for receiving the broadcast wave of the physical channel corresponding to the service is performed, and EITp / f is received. The program information is updated. By receiving EITp / f, the background color of the program information 25 is displayed in white.

  FIG. 9D shows a state where program information of another representative service registered in the service information table 31 is added. In this example, when the program information exceeds five, the scroll bar 26 is displayed, and the user can select the program information to be displayed by the scroll bar 26.

  FIG. 9E shows a state where the program information 22 of the representative service 021ch is updated. Here, it is assumed that the program information 22 of the representative service 021ch is old information that has passed for a certain period of time since the update, and therefore the channel selection process is performed again, EITp / f is received, and the program information is updated. By receiving EITp / f, the background color of the program information 22 is changed from gray to white.

  FIG. 9F shows a state where the program information 23 of the representative service 041ch is updated. Here, it is assumed that the program information 23 of the representative service 041ch is old information that has passed a predetermined time or more since the update, and therefore the channel selection process is performed again, EITp / f is received, and the program information is updated. By receiving EITp / f, the background color of the program information 23 is changed from gray to white.

  FIG. 10 is a flowchart showing a process for displaying the back program guide while referring to the service information table 31 and the program information table 42. FIG. 11 is a flowchart showing a process of searching for a currently broadcast program (broadcast program) executed in the process of FIG. FIG. 12 is a flowchart showing a process of displaying a program currently being broadcast, which is executed in the process of FIG. FIG. 13 is a flowchart showing the channel selection process executed in the flowchart of FIG.

  When the user presses the back program guide button 64 of the remote controller 60 (FIG. 2), the back program guide display process shown in FIG. 10 is executed. First, a plurality of services in each record of the service information table 31 (FIG. 4) are searched in order, and the representative service identification is referred to (step S101). There is always one representative service identification for each record. Based on the representative service identification, it is determined whether or not it is a representative service (step S102). If a representative service is found (YES in step S102), a start record number is obtained (step S103), and a program search process during broadcasting is performed. (Step S104) is performed.

  In this broadcast program search process (step S104), as shown in FIG. 11, the start time and the program length are referenced from the record in the program information table 42 and compared with the current time (steps S111 and S112). As a result, if the relationship of “start time” <“current time” <“start time + program length” is satisfied (YES in step S112), it is determined that the program is currently being broadcast, and the program name is changed. Acquisition is performed (step S115), the processing result is set to “acquisition of broadcast program”, and the process returns to the process of FIG. 10 (step S116). If the program is not currently being broadcast (NO in step S112), the next record is set (step S113), and whether it is greater than the end record number in the service information table 31, that is, whether the end record has been reached. Is determined (step S114). If the end record has not been reached (NO in step S112), the processes in steps S111 to S114 are repeated. If the end record has been reached (YES in step S112), the processing result is set as “No broadcast program being broadcasted”. As “acquisition”, the process returns to the process of FIG. 10 (step S117).

  Next, in step S105 shown in FIG. 10, it is determined whether or not a broadcast program has been acquired in the broadcast program search process (step S104), and the program name is determined (if a broadcast program has been acquired). . If the currently broadcast program has been acquired (YES in step S105), the broadcast program display process (step S107) is performed, and if the currently broadcast program has not been acquired (step S105). NO), a channel selection process (step S106) is performed.

  In the broadcast program display process (step S107), as shown in FIG. 12, the update time is extracted from the record number of the program information table 42 in which the program information to be displayed is stored, and the information described with reference to FIG. Freshness determination processing is executed (step S121). In accordance with the freshness determined in step S121, display attributes such as background color, character color, and character size to be displayed on the back program guide are determined (step S122), and the program information of the program is displayed on the back program guide screen 27. It is displayed (step S123). Here, the background color is set to gray for old information and the background color is set to white for new information.

  In the channel selection process (step S106), as shown in FIG. 13, the tuner refers to the physical channel number from the record in the service information table 31 (step S131) and receives a broadcast wave of the physical channel. 101 is controlled (step S132). Next, it is determined whether or not the broadcast wave has been received (step S133). If the broadcast wave has been received (YES in step S133), the program information in the program information table 42 is updated according to the received EIT ( In step S134), the process result is set to channel selection OK, and the process returns to the process of FIG. 10 (step S135). If the broadcast wave cannot be received (NO in step S134), the process result is selected as NG and the process returns to the process of FIG. 10 (step S136).

  Next, in step S108 shown in FIG. 10, it is determined whether or not the program information has been acquired by the channel selection process (step S106). If the program information can be acquired (YES in step S108), the process returns to step S103 to execute the process. When the program information cannot be acquired (NO in step S108), it is determined whether or not the display of all TSs in the service information table 31 is completed (step S109), and the display of all TSs is not completed. In that case (NO in step S109), the next record is selected (step S110), and the processes in steps S101 to S110 are repeated. When the display of all TSs is completed (YES in step S109), the back program guide display process ends.

  As described above, according to the third embodiment, since the freshness of each program information included in the back program guide is displayed, the user who viewed the back program guide can check whether the program information is new information or old information. And the reliability of the program information can be grasped. Further, since the program information stored in the program information storage device 111 is displayed at the time of receiving the display request for the back program guide, the back program guide can be displayed quickly.

  In the third embodiment, since the channel selection process is performed when the program information of the program currently being broadcast is not stored in the program information storage device 111, the program information of the program is acquired. , It can be displayed on the back program guide screen 27.

  In the third embodiment, as described in the second embodiment, when the EIT is received and the program information table 42 is updated while the back program table is displayed, the program information is updated. The freshness display may be updated.

It is a figure which shows the transition of the screen of a program schedule in the program schedule display apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the remote control in the program guide display apparatus which concerns on Embodiment 1 of this invention. It is a block diagram which shows the structural example of the digital broadcast image receiver containing the program schedule display apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the data structure of the program information in the program guide display apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the process for displaying the program schedule screen in the program schedule display apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the process which acquires the start record number of a program information table performed in the process of FIG. It is a flowchart which shows the determination process of the information freshness performed in the process of FIG. It is a flowchart which shows the process at the time of the update of the program schedule in the program schedule display apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the transition of the back program schedule screen in the program schedule display apparatus which concerns on Embodiment 3 of this invention. It is a flowchart which shows the process for displaying the back program schedule screen in the program schedule display apparatus which concerns on Embodiment 3 of this invention. It is a flowchart which shows the process which searches the program in broadcast performed in the process of FIG. It is a flowchart which shows the process which displays the program in broadcast performed in the process of FIG. Fig. 11 is a flowchart showing a channel selection process performed in the process of Fig. 10.

Explanation of symbols

1 Service name, 2 Broadcast period and program name, 3 Current time, 4 Date button, 5, 6, 7, 8, 9 Program information, 10 Date button, 11 TV broadcast screen, 12 Program guide screen, 21, 22, 23 24, 25 Program information, 27 Back program guide screen, 31 Service information table, 42 Program information table, 60 Remote control, 63 Program guide button, 64 Back program guide button, 101 Tuner, 110 CPU, 111 Program information storage device.

Claims (11)

Storage means for storing program information for displaying a program guide and information indicating the update time of the program information;
Display control means for displaying the program guide, wherein display control is performed to display the program information included in the program guide with a display attribute corresponding to an elapsed time since the program information was updated. And a program guide display device.   The display control means determines a freshness representing the newness of the program information based on an elapsed time since the program information is updated, and determines a display attribute of the program information according to the freshness. The program guide display device according to claim 1.   The display control means monitors the change in the freshness of the program information at regular intervals, and changes the display attribute of the program information in accordance with the change in the freshness of the program information. The program guide display device described.   4. The program guide according to claim 1, wherein the program guide is a back program guide including program information of a currently viewed program and program information of another program currently being broadcast. The program guide display device described.   5. The apparatus according to claim 4, further comprising means for performing channel selection processing to acquire program information of the program when program information of another program currently being broadcast is not stored in the storage means. The program guide display device described in 1.   A digital broadcast receiver comprising the program guide display device according to any one of claims 1 to 5. In a program guide display method for displaying the program guide using storage means for storing program information for displaying the program guide and information indicating the update time of the program information,
Displaying the program guide, comprising: displaying the program information included in the program guide with a display attribute corresponding to an elapsed time since the program information was updated. Table display method. The step of displaying the program guide includes:
Determining freshness representing the newness of the program information based on the elapsed time since the program information was updated;
The method according to claim 7, further comprising: determining a display attribute of the program information according to the freshness. The step of displaying the program guide includes:
Monitoring changes in the freshness of the program information at regular intervals;
The program guide display method according to claim 8, further comprising: changing a display attribute of the program information according to a change in freshness of the program information.   10. The program listing according to claim 7, wherein the program guide is a back program guide including program information of a currently viewed program and program information of another program currently being broadcast. The program guide display method described.   11. The method according to claim 10, further comprising a step of performing channel selection processing to acquire program information of the program when program information of another program currently being broadcast is not stored in the storage means. The program guide display method described.

Images