JP2011114645A - Content information management device, content information management method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently manage program detailed information so as to acquire and store also the program detailed information as far as possible. <P>SOLUTION: The area of program information of other networks (BS, CS, IPTV) is utilized as the recording area of the program detailed information of terrestrial digital broadcasting, and the pieces of information are stored in a flash memory. In this way, since the storage area of the terrestrial digital broadcasting sharply increases, more pieces of program detailed information are stored. Priority can also be given to storage with a broadcasting time zone or a channel as a reference. Since detailed information to be usually stored in a RAM is stored in the flash memory by limiting a network, etc., management is performed so as to store more pieces of program detailed information. It becomes possible to perform detailed program retrieval processing, etc. at high speed, for example, by utilizing the program detailed information, and using, for example, a performer or the subtitle of the next week, etc. which are not descried in the program information and described only in the program detailed information as a keyword. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a content information management technique, and more particularly to a program information management technique in a digital broadcast receiving apparatus.

  Information related to the content (program) used in the digital broadcast receiving apparatus includes program information including a brief description of the program and program detailed information including a detailed description of the program.

  In digital broadcasting and the like, since many programs are provided, management of content becomes important. For example, in the technology described in Patent Document 1 below, the content management apparatus includes a recording unit that stores content in a content storage unit, a content attribute storage unit that stores content attribute information, and a predetermined free space in the content storage unit. In response to a request for securing the content, a content management unit that determines which content can be selected based on the attribute information and how to compress each content can be satisfied, and the selected content is determined Content processing unit processed by the method. The content management unit updates the attribute information of the processed content according to the processed attribute. Accordingly, it is possible to provide a content management apparatus that records and saves content so that limited storage resources can be efficiently used and necessary content can be used when necessary.

  Non-Patent Document 1 defines a standard including detailed program information.

JP 2006-295509 A

http://www.arib.or.jp/tyosakenkyu/kikaku_hoso/hoso_gijutsu_number.htmlTechnical data ARIB TR-B14 3.9 edition

  However, according to the standard described in Non-Patent Document 1, the detailed program information is not necessarily described for all events (programs), and a sufficient responsivity can be ensured because the retransmission cycle is slow. Because it is not a thing, it is not stored in the non-volatile memory (flash memory), only the program information is stored in the flash memory, and the detailed program information can be stored only in the volatile memory (RAM). It is often done.

  In addition, it is not possible to determine in advance whether the user views BS / CS, terrestrial digital, IPTV, or the same view for all networks. In the current situation, program information on terrestrial digital broadcasting and IPTV is similarly stored in flash.

  It is an object of the present invention to provide a technique for efficiently managing detailed content information by acquiring and storing detailed content information as much as possible.

  The present invention is a simple initial setting (setting immediately after purchase) (contents of terrestrial digital channel setting, BS / CS antenna setting, IPTV setting), terrestrial digital, BS / CS antenna. Whether the line is connected to the LCD TV, whether the Ethernet cable is connected, and in addition, the user intentionally operates from the user menu (for example, saves the terrestrial digital program details information in the flash memory) In such a case, a network that is operated so as to store only program information in the flash memory across all networks (BS / CS, terrestrial digital broadcasting, IPTV) is actually used frequently (for example, terrestrial digital broadcasting). The operation is switched so as to store the program information and detailed program information in the flash memory.

  According to an aspect of the present invention, a content information management apparatus that manages content information and content detailed information of content in a plurality of content networks, the content information acquisition unit acquiring the content information and the content detailed information A storage unit for storing the content information and the detailed content information; a first content network selected from the plurality of content networks; and a second content network not selected from the first content network. A content information management unit that switches a storage area in the storage unit of the content information of the second content network to a storage area in the storage unit of the detailed content information of the first content network. content Broadcast management device is provided. It is preferable that the content information management unit determines the first content network and the second content network based on the usage status of the content network.

  The present invention is a content information management apparatus that manages program information and detailed program information in a plurality of programs, the information acquiring unit acquiring the program information and the detailed program information, and the information acquiring unit A storage unit comprising a flash memory having an area for storing the program information and the detailed program information; a first content network selected from the plurality of content networks; and a second content network not selected A program information management unit that switches a storage area in the storage unit for the program information of the second content network to a storage area in the storage unit for the detailed program information of the first content network. This is a content information management device.

  The content information management unit may determine the usage status of the content network based on presence / absence of channel setting in the content network, or based on whether hardware is connected to the device. You may make it do.

  In addition, the content information management unit may set the content network in which user settings are made as the first content network. Furthermore, the content information management unit may be configured to be able to adjust a ratio of storage areas of the content information and the detailed content information in the storage unit. In this case, it is preferable to monitor the storage status of the content information and the detailed content information. Further, the adjustment may be made higher if the usage status is high, and adjusted to be lower if the usage status is low.

  The content information is generally described by a short format event descriptor, and the content detailed information is generally described by an extended format event descriptor.

  In addition, the present invention includes the content information management device according to any one of the above, and a content search unit that searches for content based on the content information and the detailed content information. It may be a content search device, and includes a content information management device according to any one of the above, and a content information display control unit that performs display control of content information based on the content information and the content detailed information. The content display apparatus characterized by having may be sufficient. Further, the content viewing apparatus may include the content information management apparatus according to any one of the above, and the content viewing apparatus may be provided in a mobile terminal.

  According to another aspect of the present invention, a content information management method for managing content information and content detailed information of content in a plurality of content networks, the content information acquisition acquiring the content information and the content detailed information A storage step of storing the content information and the detailed content information in a storage unit, a first content network selected from the plurality of content networks, and a second content network not selected Of these, the storage area of the storage unit in the storage step of the content information of the second content network is switched to the storage area of the storage unit in the storage step of the detailed content information of the first content network. Content information management method characterized by comprising: a content information management step to obtain, it is provided.

  The present invention may be a program for causing a computer to execute the method described above, or a computer-readable recording medium for recording the program. The program may be acquired by a transmission medium such as the Internet.

  According to the present invention, detailed information of content can be stored in a nonvolatile memory and efficiently managed. For example, by storing as much detailed information as possible in a non-volatile memory, it can be used for program search and the like. Further, there is an advantage that the storage area of the nonvolatile memory can be used efficiently.

It is a figure which shows the structural example of program information and program detailed information. It is a figure which shows the item name of an extended format event descriptor. It is a conceptual diagram which shows the mode of the preservation | save to the flash memory of a short format event descriptor in a common digital television receiver. It is a conceptual diagram which shows the mode of the preservation | save to the flash memory of a short format event descriptor in the digital television receiver by embodiment of this invention. It is a figure which shows the mode of utilization of the storage area of the program information of another network. It is a figure which shows the example of 1 structure of the digital broadcast receiver by embodiment of this invention. It is a flowchart figure at the time of initialization. It is a flowchart figure which shows the flow of the management process of program information and program detailed information in the case of performing determination based on the presence or absence of hardware detection. It is a flowchart figure which shows the flow of the management process of program information and program detailed information in the case of performing determination based on a user menu setting.

  Before describing the content management technique according to the embodiment of the present invention, program information and program detailed information in a digital broadcast receiving apparatus will be described as an example of content information.

  FIG. 1 and FIG. 2 are diagrams showing a configuration example of program information and program detailed information. As shown in FIG. 1, the program information 2 includes simple program information, and is described by a short format event descriptor 5 together with the program title 1. In addition, the input information 7 is information relating to the form of the content signal.

  More detailed program information is displayed as indicated by reference numerals 11, 15, and the like. The detailed program information 11 includes details of various types of program information such as subtitles, program contents (summary), and performers. Furthermore, information 15 such as music information, screenplay, production, producer, producer, and the like is described, and these are called extended format event descriptors 17. As shown in FIG. 2, the extended event descriptor 17 includes “notice”, “program content”, “performer”, “original / screenplay”, “director / director”, “ Items such as “music” and “production” are described.

  According to the standard of digital broadcasting, in the case of terrestrial digital broadcasting (terrestrial digital), the program name is a short format event descriptor, which is described by 40 characters or less and 96 bytes or less. In addition, the program description is a short format event descriptor that is 80 characters or less and 192 bytes or less, the item name is an extended format event descriptor that is 8 characters or less and 16 bytes or less, and the item description is The extended format event descriptor is 220 bytes or less per descriptor, and a maximum of two descriptors can be arranged for one item name, and the total length is 200 characters or less.

  In the case of BS / broadband CS, the program name is a short format event descriptor that is 40 characters or less and 80 bytes or less, and the program description is a short format event descriptor that is 80 characters or less. And 160 bytes or less, the item name is an extended format event descriptor, 8 characters or less, and 16 bytes or less, and the item description is an extended format event descriptor, 100 characters or less, It can be 200 bytes or less, and a maximum of two descriptors can be arranged for one item name. Since a maximum of 16 extended event descriptors can be arranged per program, the maximum is 100 full-width characters × 16 = 1600 characters. As described above, since the extended format event descriptor includes more information, it can be seen that the amount of information increases.

The approximate amount of memory required for the extended format descriptor is as follows.
First, if there are 8 programs per 3 hours as a standard, the maximum for 8 days is 1600 [characters] × 2 [byte code] × 8 [programs] = 25,600 [bytes]. Since 24 [hours] / 3 [hours] × 8 [days] × 25600 [bytes] = 1,638,400 [bytes], digital terrestrial (8 ch), BS (12 ch), CS (65 ch), If there are 176 channels in all of IPTV (91 channels), the amount of data is as large as 1,638,400 [bytes] × 176 [ch] = 288,358,400 [bytes], that is, about 290 [Mbyte].

  Refer to the standard estimated amount of EIT [schedule extended] of digital TV service (terrestrial digital) assumed as standard in ARIB (ARIB TR-B14 version 3.9, second volume 4-362), 8 days per TS It is 942,592 [byte] in minutes, and similarly, terrestrial digital, BS, CS, and IPTV are all 176 ch. 942,592 [byte] × 176 [ch] = 165,896,192 [byte] That is, about 166 [Mbyte].

  On the other hand, the capacity of the flash memory for the short format event descriptor assumed in the digital broadcast receiving apparatus is about 5.5 [Mbyte]. 30 times the storage capacity is required.

  Next, the retransmission cycle for each network will be described for the short format event descriptor and the extended format event descriptor.

First, the case of terrestrial digital broadcasting will be described. In terrestrial digital, when transmitting with PSI and common operation SI,
H-EIT (program information such as program name for fixed reception, broadcast date / time and contents), [p / f: 1-3 [s]] (Present (current) / following (next) short-form event) The retransmission period of the descriptor and the extended format event descriptor is 1-3 s.

  Of the common SI, the retransmission period of the H-EIT [schedule basic] of the short format event descriptor (digital TV service) is 60-180 [s].

In addition, when transmitting by individual operation SI,
H-EIT [p / f: 1-3 [s]] short format event descriptor, extended format event descriptor,
H-EIT [schedule basic: 60-180 [s]] short format event descriptor (digital TV service),
H-EIT [schedule extended: 60-180 [s]] Extended format event descriptor.

In the case of BS / broadband CS,
When transmitting with PSI and all-station SI,
EIT [p / f actual: 1-3 [s]] [p / f other: 5-20 [s]] Short-form event descriptor,
EIT [schedule actual basic: 60-360 [s]] [schedule other basic: 60-360 [s]]
When transmitting at each station SI,
EIT [p / f actual: 1-3 [s]] [p / f other: 5-20 [s]] Extended event descriptor,
EIT [schedule actual basic: 60-360 [s]] [schedule other basic] short format event descriptor,
EIT [schedule actual extended: 60-360 [s]] [schedule other extended] extended format event descriptor,
LDT (CS only) Extended format event descriptor [60-360 [s]].

Therefore, to get the desired extended event descriptor, after selecting the channel,
In BS, a maximum of 360 [s] × 2 (period) = 720 [s], that is, 12 minutes are required. In addition, in terrestrial digital broadcasting, a maximum of 180 [s] × 2 (cycle) = 360 [s], that is, 6 minutes are required.

  For both BS and terrestrial digital, the shortest 60 [s] x 2 (cycle) = 120 [s], that is, it takes 2 minutes (it is a case where the broadcast station sends it with the shortest retransmission cycle, and it takes longer time) May take).

Therefore, in order to obtain detailed information for all channels,
In the BS, a maximum of 720 [s] × 12 (channels) = 8640 [s], that is, 144 minutes are required. On the other hand, terrestrial digital (Tokyo) requires a maximum of 360 [s] × 8 (channels) = 2880 [s], that is, 48 minutes.

  Therefore, 120 [s] × 12 (channel) = 1440 [s], that is, 24 minutes are required at the shortest. However, this calculation is only a case where the broadcasting station sends it with the shortest retransmission cycle, and it is highly likely that a longer time is required.

  As described above, in order to acquire all the detailed program information for all channels with the terrestrial digital broadcasting and the BS, in practice, a considerably long time is required. In the above, “actual” is its own TS (channel being viewed), “other” is another TS (channel not being viewed), and “schedule” includes schedule information (p / f) and thereafter. This is all program information.

  Detailed information is not necessarily described for all events. Furthermore, since the retransmission period of H-EIT [schedule extended] or EIT [schedule extended] is long, sufficient responsiveness cannot be ensured. If all the detailed information provided by all the broadcasters is to be received, almost all TSs must be received. Therefore, it is desirable that at least the individual operation EIT of the currently selected TS or each station EIT is quickly accumulated. However, depending on the TS, an extended cycle group may be used for H-EIT [schedule extended] or EIT [schedule extended], and in this case, transmission is performed with a certain retransmission cycle.

  Whether detailed information exists for each event cannot be grasped unless H-EIT [schedule extended] or EIT [schedule extended] is acquired, but H-EIT [schedule extended] or each station EIT [schedule extended] is operated by itself. Whether or not it is being operated and what percentage is being used are described in the SI transmission parameter descriptor in the BIT second descriptor loop. Details are described in Chapter 13.2.2 of the PSI / SI Operational Regulations. The transmission rate can be used, for example, for estimating the amount of data and determining whether or not an acquisition operation is to be performed, but it is not necessary to use it if it is determined that it is unnecessary.

  FIG. 3 is a conceptual diagram showing how a short format event descriptor is stored in a flash memory in a general digital television receiver. As shown in FIG. 3, it can be seen that program information (short format event descriptor) is stored in the flash memory fairly for all networks of terrestrial digital, BS, CS, and IPTV (21a to 21d).

  Therefore, as can be seen from the above description, when program detailed information is acquired in addition to program information in all networks, there is a problem that the occupied capacity of the flash memory increases and the time required for acquisition also increases. .

  Therefore, in the digital television receiver according to the embodiment of the present invention, the following measures are taken regarding the management (storing) processing of program information. FIG. 4 is a diagram corresponding to FIG. 3, and is a conceptual diagram showing how the short format event descriptor is stored in the flash memory in the digital television receiver according to the embodiment of the present invention. As shown in FIG. 4, program information is preferentially given to at least one of all networks such as terrestrial digital, BS, CS, and IPTV (Internet Protocol Television) that distributes video via the Internet. It can be seen that (short format event descriptor) is stored in the flash memory (of 21e to 21h, the storage area for other BS, CS, and IPTV program information is provided to the terrestrial digital 21e. Is shown).

The criteria for deciding which network to prioritize are illustrated below.
1) Since BS and CS are not equipped with essential hardware such as antennas, it is known that BS and CS are not viewed (hardware dependent)
2) When the IPTV channel search is not performed, and it is known that the user does not watch the IPTV (user dependent 1)
3) When terrestrial digital channel search is not performed and it is known that terrestrial digital viewing is not performed (user-dependent 2)
Etc.

  The case of FIG. 4 is an example in which only terrestrial digital is prioritized, and a storage area for BS, CS, and IPTV program information in flash memory is provided for terrestrial digital. The provision target may be provided to any of BS, CS, and IPTV, or may be provided to two or more networks. Further, the area ratio may be adjusted for each network.

  Further, which network is prioritized may be determined by user settings, or a viewing history may be stored and a network having a high viewing frequency may be prioritized.

  FIG. 5 is a diagram showing how a storage area for program information in another network is used. In the example shown in FIG. 5, an area of program information other than terrestrial digital (BS, CS, IPTV) is used as a recording area for terrestrial digital program detail information 23, and the information 23 is stored in flash memory. To do. In this way, the storage area that can be used for terrestrial digital broadcasting is greatly increased, so that it is possible to store more program detail information of terrestrial digital broadcasting. In addition to using the network as a reference, the storage may be prioritized based on the broadcast time zone or channel. Normally, detailed information stored in RAM can be stored in non-volatile memory (flash memory), which tends to be limited by limiting the network, etc., so that more program detailed information can be stored. can do. Detailed program search processing is performed at high speed by using the program detail information, for example, the program information is not described, and the performers and subtitles of next week described in the program detail information are used as keywords. It becomes possible.

  FIG. 6 is a diagram illustrating a configuration example of the digital broadcast receiving apparatus according to the embodiment of the present invention. As shown in FIG. 6, the digital broadcast receiving apparatus A includes a front end 103 that performs reception processing of a broadcast wave received from an antenna 101, a demultiplexer 105 that divides the received signal into video / audio and data, Display such as a video / audio decoding unit 107 that performs audio decoding, an audio output unit 109 such as a speaker, a screen synthesis unit 111 that synthesizes video and various data, and a liquid crystal display that performs synthesized screen display A memory unit 123 including a high-speed RAM, a storage unit 125 including a flash memory, and a control unit (CPU) 121 that controls the whole. Content information can be acquired from the antenna 101 via the front end 103 and the demultiplexer 105 (forms a content information acquisition unit). Furthermore, a program information decoding unit 115 that decodes program information (including program detailed information) included in SI information and the like acquired by the demultiplexer 105, and an electronic program that creates an electronic program guide (EPG) based on the program information It includes a table data generation unit 117, a remote control light receiving unit 127 that receives a remote control signal, and an external interface unit 131 for connecting an external server 25 and the like to a device via the network NT. The storage unit 125 stores a program for causing the control unit 121 to execute processing shown in a flowchart relating to management of program information described below. That is, a content information management unit 121a that manages content information is provided. Furthermore, as will be described later, a content search unit 121b for searching for content existing inside (such as a hard disk) or outside the apparatus may be provided.

Below, a program process is demonstrated.
FIG. 7 is a flowchart at the time of initial setting. As shown in FIG. 7, processing is started in step S1 (START), and in step S2, terrestrial digital, BS / CS, and IPTV program information among available networks is stored in a storage unit (flash memory) 125. Remember. Next, in step S3, it is determined whether or not to set a terrestrial digital channel. This determination is performed based on the user setting or the presence / absence of a user instruction in the device. If there are user settings or user instructions, follow the settings or instructions. If YES (instructed), the process proceeds to step S15. If NO, the process proceeds to step S4, and the terrestrial digital program information is not stored in the flash memory. Next, the process proceeds to step S5, and it is determined whether or not to set the BS / CS channel (based on the presence or absence of setting or instruction). If YES, the process proceeds to step S11. If NO, the process proceeds to step S6, and the BS / CS program information is not stored in the flash memory. Next, in step S7, it is determined whether or not to set the IPTV channel (based on the presence or absence of setting or instruction). If yes, go to step S10. If NO, the process proceeds to step S8, and the IPTV program information is not stored in the flash memory, and the process ends in step S9 (END). In step S10, the detailed IPTV program information is stored in the flash memory.

  When the process proceeds from step S5 to step S11, it is determined whether or not to set the IPTV channel (based on the presence or absence of setting or instruction). If YES, the process proceeds to step S14, and the BS / CS and IPTV program detailed information is stored in the flash memory. If NO in step S11, the process proceeds to step S12, and the IPTV program information is not stored in the flash memory, but the BS / CS program detailed information is stored in the flash memory in step S13.

  When the process proceeds from step S3 to step S15, it is determined whether or not BS / CS channel setting is performed (based on the presence or absence of setting or instruction). If YES, the process proceeds to step S21. If NO, the process proceeds to step S16, and the BS / CS program information is not stored in the flash memory. Next, the process proceeds to step S17 to determine whether or not to set the IPTV channel (based on the presence or absence of setting or instruction). If YES, the process proceeds to step S20, and the terrestrial digital and IPTV program detailed information is stored in the flash memory. In the case of NO in step S17, the process proceeds to step S18, and the IPTV program information is not stored in the flash memory, but the terrestrial digital program detailed information is stored in the flash memory in step S19.

  When the process proceeds from step S15 to step S21, it is determined whether or not to set the IPTV channel (based on the presence or absence of setting or instruction). If yes, the process ends (step S9). In the case of NO, the process proceeds to step S22, and the IPTV program information is not stored in the flash memory, and the terrestrial digital and BS / CS program detailed information is stored in the flash memory in step S23.

  Through the above processing, it is assumed that the content network without channel setting has no possibility (intention) to be used by the user, and the storage area of the content information flash memory is released and released for the content network. By effectively allocating the storage area to the storage area of the detailed content information of the content network that has been set for the channel, that is, the possibility (intention) that the user is likely to use (intention) is high, the storage area of the flash memory is effectively used. It can be performed.

  In this way, program information (a network with low usage frequency) other than the predetermined or desired network is not stored in the flash memory, but instead of the predetermined or desired network (network with high usage frequency). Detailed program information can be preferentially saved in the flash memory (more).

  FIG. 8 is a flowchart showing the flow of the management process of program information / program detailed information in the case of performing determination (hardware dependence) based on the presence / absence of hardware detection. In step S31, the processing is started (STRAT), and in step S32, terrestrial digital, BS / CS, and IPTV program information are stored in the flash memory. Next, in step S33, it is determined whether or not terrestrial digital hardware such as an antenna is connected to the apparatus. If YES, the process proceeds to step S45. If NO, the process proceeds to step S34, and the terrestrial digital program information is not stored in the flash memory (because it is determined that the hardware is not functioning). Next, the process proceeds to step S35, and it is determined whether or not the BS / CS antenna is connected. If YES, the process proceeds to step S41. If NO, the process proceeds to step S36, and the BS / CS program information is not stored in the flash memory. In step S37, it is determined whether an Ethernet (LAN) cable is connected to the apparatus. If YES, the process proceeds to step S40. If NO, the process proceeds to step S38, and the IPTV program information is not stored in the flash memory, and the process ends in step S39 (END). In step S40, the IPTV program detailed information is stored in the flash memory.

  When the process proceeds from step S35 to step S41, it is determined whether an Ethernet cable is connected. In the case of YES, it progresses to step S44 and preserve | saves the program detailed information of BS / CS and IPTV in flash memory. In the case of NO in step S41, the process proceeds to step S42, and the IPTV program information is not stored in the flash memory, but the BS / CS program detailed information is stored in the flash memory in step S43.

  When the process proceeds from step S33 to step S45, it is determined whether the BS / CS antenna is connected to the apparatus. If YES, the process proceeds to step S51. If NO, the process proceeds to step S46, and the BS / CS program information is not stored in the flash memory. In step S47, it is determined whether an Ethernet cable is connected to the device. In the case of YES, the process proceeds to step S50, and the terrestrial digital and IPTV program detailed information is stored in the flash memory. In the case of NO in step S47, the process proceeds to step S48, and the IPTV program information is not stored in the flash memory, but the terrestrial digital program detailed information is stored in the flash memory in step S49.

  When the process proceeds from step S45 to step S51, it is determined whether or not the Ethernet cable is connected to the apparatus. If YES, it is determined that there is no area for replacing the program information with the detailed program information, and the process ends. (Step S39). If NO, the process proceeds to step S52, and the IPTV program information is not stored in the flash memory, but the terrestrial digital and BS / CS program detailed information is stored in the flash memory in step S53.

  Through the above processing, it is assumed that a content network that does not function in hardware has no possibility (intention) to be used by the user, and the storage area of the content information flash memory is released and released for the content network. By effectively allocating the storage area to the storage area of the detailed content information of the content network that functions in hardware, that is, it is estimated that the possibility (intention) of use by the user is high, the storage area of the flash memory is effectively used. It can be performed.

  With the above processing, instead of storing program information other than the network that performs hardware functions in the flash memory, the network program detailed information that functions hardware is given priority (more) to the flash memory. Can be saved.

  FIG. 9 is a flowchart showing a flow of management processing of program information / program detailed information in the case of performing determination (user-dependent) based on user menu settings. In step S61, the process is started (STRAT), and in step S62, terrestrial digital, BS / CS, and IPTV program information are stored in the flash memory. Next, in step S63, it is determined whether or not the user setting for saving the terrestrial digital program detailed information is set. If YES, the process proceeds to step S75. If NO, the process proceeds to step S64, and the terrestrial digital program information is not stored in the flash memory. Next, the process proceeds to step S65, and it is determined whether or not the user setting for saving BS / CS program detailed information is set. If YES, the process proceeds to step S71. If NO, the process proceeds to step S66, and the BS / CS program information is not stored in the flash memory. Next, in step S67, it is determined whether or not the user setting for saving the IPTV program detailed information is set. If YES, the process proceeds to step S70. If NO, the process proceeds to step S68, and the IPTV program information is not stored in the flash memory, and the process ends in step S69 (END). In step S70, the IPTV program detailed information is stored in the flash memory.

  When the process proceeds from step S65 to step S71, it is determined whether or not the user setting for saving the IPTV program detailed information is set. In the case of YES, the process proceeds to step S74, and the BS / CS and IPTV program detailed information is stored in the flash memory. If NO in step S71, the process proceeds to step S72, and the IPTV program information is not stored in the flash memory, but the BS / CS program detailed information is stored in the flash memory in step S73.

  When the process proceeds from step S63 to step S75, it is determined whether or not the user setting for saving the BS / CS program detailed information is set. If YES, the process proceeds to step S81. If NO, the process proceeds to step S76, and the BS / CS program information is not stored in the flash memory. Next, the process proceeds to step S77, and it is determined whether or not the user setting for saving the detailed program information of the IPTV is set. If YES, the process proceeds to step S80, and the terrestrial digital and IPTV program detailed information is stored in the flash memory. In the case of NO in step S77, the process proceeds to step S78, and the IPTV program information is not stored in the flash memory, but the terrestrial digital program detailed information is stored in the flash memory in step S79.

  When the process proceeds from step S75 to step S81, it is determined whether or not the user setting for saving the IPTV program detailed information is set. If it is determined in step S81 that the detailed IPTV program information is stored based on the user menu setting (Yes), it is determined that there is no area for replacing the program information with the detailed program information, and the process ends in step S69. If NO, the process proceeds to step S82, and the IPTV program information is not stored in the flash memory, and the terrestrial digital and BS / CS program detailed information is stored in the flash memory in step S83.

  Through the above processing, it is assumed that a content network that has not been set by the user for storing information has no possibility (intention) of use by the user, and the content information is stored in the flash memory for the content network. Storage of detailed content information of a content network that is presumed to have a user setting for storing information in the storage area that has been freed, that is, that is likely to be used (intention) by the user By allocating to the area, the storage area of the flash memory can be effectively used.

  Through the above processing, the network program detailed information set in the user menu can be preferentially saved in the flash memory instead of saving the program information other than the network set in the user menu in the flash memory. .

  In the processing described above, the program information storage area is switched to the network program detail information storage area presumed to use the network storage area presumed not to be used. Even if it is not 100%, adjustment such as switching by 80% is possible. In addition, when all the networks are available, an example in which the storage area is not switched is shown. However, when the storage area still remains, for example, terrestrial digital broadcasting is performed based on the priority set by the user. Only the detailed program information may be stored. Further, the remaining capacity of the storage area may be monitored in real time, and the degree of transfer to the program detailed information may be changed as needed based on the monitoring result.

  Next, a content search technique using the content information management technique according to the embodiment of the present invention will be described. The content search processing according to the present embodiment uses a general content search processing technique as a search algorithm, and the details thereof will be omitted, but a general keyword search will be described as an example.

  For example, when the content search unit 121b shown in FIG. 6 performs a keyword search, in addition to the program information managed (saved) by the content information management unit 121a and stored in the flash memory (storage unit), the same flash Detailed program information stored in the memory (storage unit) 125 is also set as a search target. That is, since the content search unit 121b can search not only the program information but also the program detailed information for the network in which the program detailed information is also stored in the flash memory, for example, the short format event description shown in FIG. In addition to simple information described by children, more detailed information described by extended event descriptors can be used for computer searches. Therefore, there is an advantage that content search leaks are reduced.

  The search processing procedure is a general keyword search for the program information and program detailed information in the flash memory. Whether or not the keyword and the information are completely matched or partially matched is determined. If the content matches, the content may be the searched content.

  Furthermore, a content display technique using the content (information) management technique according to the embodiment of the present invention will be described. In the program guide data generation unit of FIG. 6, it is convenient to generate not only program information but also detailed program information in the program guide and hold it in the program guide data. Even in such a case, content such as when creating an electronic program guide by reading detailed program information from the flash memory by managing the detailed program information of the network content to be used in the flash memory. In the display, there is an advantage that more detailed information can be displayed, and such display can be displayed at higher speed by reading from the flash memory.

  In the above-described embodiment, the configuration illustrated in the accompanying drawings and the description in the specification are not limited to these, and can be appropriately changed within the scope of the effects of the present invention. It is. In addition, various modifications can be made without departing from the scope of the object of the present invention. For example, in the present embodiment, the digital broadcast receiving apparatus has been described as an example. However, the present invention can also be used for a recorder apparatus, a portable terminal, or the like that can receive digital broadcast. In particular, in a portable terminal device with a TV function, since the memory capacity is reduced, the effect of the present invention is great.

  In addition, a program for realizing the functions described in the present embodiment is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed to execute processing of each unit. May be performed. The “computer system” here includes an OS and hardware such as peripheral devices.

  Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.

  The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the above-described functions, or may be a program that can realize the above-described functions in combination with a program already recorded in a computer system.

  The present invention can be used for content information management of a content receiving apparatus.

A ... Digital broadcast receiving apparatus, 101 ... antenna, 103 ... front end, 105 ... demultiplexer, 107 ... video / audio decoding unit, 109 ... audio output unit, 111 ... screen synthesis unit, 113 ... display unit, 115 ... program information Decoding unit, 117 ... Electronic program guide data generation unit, 121 ... Control unit (CPU), 121a ... Content information management unit, 121b ... Content search unit, 123 ... Memory unit, 125 ... Storage unit (flash memory), 127 ... Remote control Light receiving part, 131... Interface part.

Claims (14)

A content information management device that manages content information and content detailed information of content in a plurality of content networks,
A content information acquisition unit for acquiring the content information and the content detailed information;
A storage unit for storing the content information and the detailed content information;
A storage area in the storage unit of the content information of the second content network among a first content network selected from the plurality of content networks and a second content network not selected, A content information management unit that switches to a storage area in the storage unit for the detailed content information of the first content network. A content information management apparatus for managing program information and program detailed information in a plurality of programs,
An information acquisition unit for acquiring the program information and the detailed program information;
A storage unit comprising a flash memory having an area for storing the program information and the program detailed information acquired by the information acquisition unit;
A storage area in the storage unit of the program information of the second content network among the first content network selected from the plurality of content networks and the second content network not selected, A content information management apparatus comprising: a program information management unit that switches to a storage area in the storage unit of the detailed program information of the first content network.   The content information management apparatus according to claim 1, wherein the content information management unit determines the first content network and the second content network based on a usage state of the content network. .   The content information management apparatus according to claim 3, wherein the content information management unit determines a usage status of the content network based on presence / absence of channel setting in the content network.   The content information management apparatus according to claim 3, wherein the content information management unit determines the usage status of the content network based on whether or not hardware is connected to the apparatus.   The content information management apparatus according to claim 3, wherein the content information management unit determines the usage status of the content network based on a usage history of the apparatus.   The content information management apparatus according to claim 2, wherein the content information management unit sets the content network in which user settings are made as the first content network.   8. The content information management unit according to claim 1, wherein the content information management unit is configured to be able to adjust a ratio of a storage area between the content information and the detailed content information in the storage unit. The content information management device described in the paragraph.   9. The content according to claim 1, wherein the content information is described by a short format event descriptor, and the detailed content information is described by an extended format event descriptor. Information management device. The content information management device according to any one of claims 1, 3 to 9,
A content search apparatus comprising: a content search unit that searches for content based on the content information and the detailed content information. The content information management device according to any one of claims 1, 3 to 9,
A content display device comprising: a content information display control unit that performs display control of content information based on the content information and the detailed content information.   A content viewing apparatus comprising the content information management apparatus according to claim 1. A content information management method for managing content information and content detailed information of content in a plurality of content networks,
A content information acquisition step of acquiring the content information and the content detailed information;
A storage step of storing the content information and the detailed content information in a storage unit;
Storage of the storage unit in the storing step of the content information of the second content network among the first content network selected from the plurality of content networks and the second content network not selected. A content information management method comprising: switching a region to a storage region in the storage unit in the storage step of the content detailed information of the first content network.   A program for causing a computer to execute the content information management method according to claim 13.

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