JP2011120016A - Information acquisition apparatus and information acquisition method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically control whether to execute or not to execute a transmission request of complementary data for complementing defective data of content data in accordance with a specific condition when requesting transmission of the complementary data. <P>SOLUTION: Based on data of content input from a broadcasting wave processing section 20 or the like, an associated information extracting section 201 extracts content associated information, and a data processing section 202 extracts video/audio information. An error detecting section 203 detects defective data included in the data of the content. The content associated information and the video/audio information, and additionally, information for specifying the defective data are managed by a data management section 207 and stored in a storage section 60. When a reproducing section 206 reproduces the stored data of the content, a complement processing section 204 controls whether to execute or not to execute transmission (request) of complementary data in accordance with a communication method of a network IF section 22 to be utilized for requesting transmission of content associated information or complementary data of target content. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an information acquisition device and an information acquisition method for acquiring complementary data for complementing a data defect portion of content data.

  In recent years, not only real-time broadcasting services in which content data and metadata are distributed over broadcast waves and networks at scheduled times, but also information storage broadcasting services, which are conventional broadcasting forms, have been provided. is planned.

  An information storage type broadcast service is a broadcast service that allows content data and metadata to be distributed to be recorded in a storage medium managed by a broadcast receiving device such as a television or a recorder, and allows the recorded content data to be reproduced later. It is.

  For example, in Japan, provision of an information storage type broadcasting service is scheduled mainly in a broadcasting form called multimedia broadcasting for mobile terminals (hereinafter referred to as multimedia broadcasting).

  In such an information storage type broadcast service, if there is a defective part in the received or recorded content, there is a problem in reproducing the content. For example, when the recorded content contains defective video information, the video is reproduced with the stop of the moving image and the occurrence of block noise. Therefore, various methods have been proposed for acquiring supplementary data that complements defects in recorded information.

  For example, according to Patent Document 1, a mobile communication terminal detects an error in a packet constituting received stream data, and designates (identifies) a packet group to be retransmitted based on the continuity of the detected error packet. A technique is disclosed in which information indicating this designated (identified) packet group is transmitted to a distribution apparatus via a mobile communication network to request retransmission.

JP 2007-259050 A (FIG. 1, paragraphs 0075-0082)

  However, Patent Document 1 detects an error packet of stream data of a received television broadcast program, and designates (specifies) a packet group to be retransmitted via a communication network based on the continuity of the detected error packet. The method is disclosed. Therefore, in the process of requesting transmission of information that complements an error packet, according to specific conditions such as information (for example, content genre) associated with stream data (content data) of a television broadcast program and a communication method of a communication network Therefore, it was not possible to automatically control information transmission requests.

  Therefore, in order to solve the above-described problem, the present invention requests execution / non-execution of a transmission request for complementary data when requesting transmission of complementary data for complementing defect data of content data under a specific condition. It is an object of the present invention to provide an information acquisition apparatus and an information acquisition method that can be automatically controlled according to the conditions.

  In order to solve the above-described problems, the present invention provides content acquisition means for acquiring content data and related information including a genre related to the content data from a broadcast wave, and defect data from the content data acquired by the content acquisition means. If the related information is specific information according to the detection means to be detected and the related information, the server is not requested to transmit complementary data for complementing the defect data detected by the detection means. When the related information is not the specific information, a request means for requesting the server to transmit the complementary data is provided.

  In addition, in order to solve the above-described problem, the present invention acquires content data and related information including a genre related to the content data from a broadcast wave, detects defect data from the acquired content data, and responds to the related information. When the related information is specific information, the server does not request the server to transmit complementary data for complementing the detected defect data, and when the related information is not the specific information, the complementary data Is requested to the server.

  According to the present invention, when requesting transmission of complementary data for complementing defect data of content data is requested, execution / non-execution of the complementary data transmission request is automatically controlled according to a specific condition. be able to.

The block diagram which shows the structure of the television receiver which is an information acquisition apparatus which concerns on embodiment of this invention. The system block diagram by each block which performs several processes, such as the data request | requirement process which requests | requires transmission of complementary data according to content relevant information in this embodiment. FIG. 3 is a flowchart for explaining an operation of a data request process associated with a content data reproduction process executed by each block described in FIG. 2; FIG. The figure which shows the example of the setting screen for setting the content relevant information and communication system used as the object which makes non-execution the transmission request | requirement of complementary data.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a television receiver 10 which is an information acquisition apparatus according to an embodiment of the present invention.
The television receiver 10 according to the present embodiment includes a broadcast wave processing unit 20, an external device IF unit 21, a network IF unit 22, an operation unit 30, a light receiving unit 31, a signal processing control unit 40, a display 51, a speaker 52, The storage unit 60 and the like are included. The broadcast wave processing unit 20 is connected to an antenna ANT, and the light receiving unit 31 exchanges information with a remote controller (hereinafter referred to as a remote controller) RC.

  This television receiver 10 supports not only the real-time broadcasting service that is a conventional broadcasting format, but also the acquisition and playback of content broadcast by a storage broadcasting service scheduled for multimedia broadcasting. That is, the television receiver 10 can store content data input from the outside of the television receiver 10 and reproduce the stored data. The content data includes video / audio information and content related information which is information related to the content. The content-related information is information related to the content and accompanying the content data. For example, the genre, program name, channel number, broadcast wave type (for example, terrestrial digital broadcast wave or BS digital broadcast wave), broadcast station This applies to names, etc., and metadata can be applied. Although multimedia broadcasting is planned to be provided by terrestrial digital broadcasting waves, it may be expanded to other broadcasting waves in the future, so information on the types of broadcasting waves may be attached. .

  The television receiver 10 detects defect data and missing data (hereinafter collectively referred to as defect data) included in the input content data. Furthermore, the television receiver 10 requests a specific server connected to the network via the network IF unit 22 at a predetermined timing to transmit complementary data for complementing the detected defect data. At this time, the television receiver 10 performs control so as to switch execution / non-execution of a complementary data transmission request to a specific server, which is a complementary data acquisition notification, according to a specific condition such as content-related information. Can do.

  The broadcast wave processing unit 20 includes a tuner and a decoder corresponding to a digital broadcast wave or an analog broadcast wave received from the antenna ANT by the ground or satellite. The broadcast wave processing unit 20 acquires a signal received by the antenna ANT, performs channel selection processing and demodulation decoding processing on a specific channel on the acquired signal, and content video / audio information, content related information, and the like are obtained. The included signal is output to the signal processing control unit 40. The broadcast wave processing unit 20 may output data (signal) including defect data.

  The external device IF unit 21 includes a connection terminal conforming to various standards such as the HDMI (registered trademark) standard, the USB standard, and the IEEE 1394 standard, and an information extracting unit that extracts necessary information based on these standards. The external device IF unit 21 acquires content data from an external device connected to the connection terminal, a storage medium such as an external HDD or a memory card, and outputs the content data to the signal processing control unit 40.

  The network IF unit 22 includes a connection terminal for connecting to a network such as the Internet, a LAN, and a WAN, and a communication unit that performs communication using a network connected through the connection terminal. The network IF unit 22 acquires a signal including video / audio information of the content, content-related information, and the like by communication using the connected network, and outputs the signal to the signal processing control unit 40. Furthermore, based on the control from the signal processing control unit 40, the network IF unit 22 requests the specific server connected to the connected network to transmit complementary data that complements the defect data. The network IF unit 22 can also read out and acquire a content signal from a storage medium at the network destination and output the content signal to the signal processing control unit 40.

  In the present embodiment, the network IF unit 22 not only acquires data (signal) including defect data but also requests transmission of complementary data for complementing the defect data, and is transmitted in response to this request. The supplementary data is also acquired and output. It should be noted that an embodiment in which a plurality of network IF units 22 are provided to support a plurality of communication methods having different physical standards, logical standards, and the like may be used. At this time, which one of the plurality of network IF units 22 is used is determined based on control from the signal processing control 40 or based on negotiations exchanged between the plurality of network IF units 22. The Here, for example, a communication method using a wireless network such as a mobile phone network or a communication method using a fixed communication network such as ADSL can be applied to the communication method.

  The operation unit 30 receives operation input information for operating the television receiver 10 and outputs the information to the signal processing control unit 40. Similarly, the light receiving unit 31 receives (receives) operation input information from the remote controller RC and outputs the received information to the signal processing control unit 40. The operation unit 30 or the remote controller RC does not execute a selection key for selecting a signal from the broadcast wave processing unit 20, the external device IF unit 21, or the network IF unit 22 and a request for transmission of complementary data. Screen operation keys for setting items to be used.

  The signal processing control unit 40 executes a reproduction process of the input content data. Specifically, the signal processing control unit 40 is input from the broadcast wave processing unit 20, the external device IF unit 21, the network IF unit 22, or the like according to information such as an operation input from the operation unit 30 or the light receiving unit 31. Various processes such as decompression processing of compressed content data and information extraction processing for content related information are performed on the received signal. In addition, the signal processing control unit 40 performs various processes such as a video signal and audio signal separation process, an MPEG encoding / decoding calculation process, and a video image quality adjustment process on the input signal to display the signal. The video signal is output to 51 and the audio signal is output to the speaker 52.

  Further, the signal processing control unit 40 includes a CPU or a microcomputer (not shown) as a control unit, and uses each module provided in the signal processing control unit 40 itself or each module connected to the signal processing control unit 40. Thus, execution of a plurality of processes including a reproduction process is controlled.

  In the present embodiment, the signal processing control unit 40 outputs data to the storage unit 60 in order to store the input data of the storage-type broadcast service content, and reads data from the storage unit 60 for reproduction processing. Execute management processing. In addition, the signal processing control unit 40 performs error detection processing for detecting defect data included in the input content data and transmission of complementary data for complementing the detected defect data at a predetermined timing. The data request process requested via the is executed. In this data request process, the signal processing control unit 40 can control execution / non-execution of a complementary data transmission request according to specific conditions such as content-related information such as the genre of the target content.

  The display 51 is a display module that displays the video signal input from the signal processing control unit 40. For example, the display 51 is a thin display such as a liquid crystal display (hereinafter also referred to as LCD) or a PDP (Plasma Display Panel).

The speaker 52 outputs the audio signal input from the signal processing control unit 40.
The storage unit 60 stores data such as video / audio information and content-related information output from the signal processing control unit 40, and specific data is read by the signal processing control unit 40. This storage unit 60 is not only the content audio / video information and content related information, but also the content that is the target of non-execution of the transmission request for defect data information and complementary data for specifying the defect data included in the content data. The request non-execution information, which is information specifying the related information and the communication method, is also stored. For example, an HDD or a semiconductor memory can be applied to the storage unit 60.

  The signal processing control unit 40 does not perform the above-described plurality of processes on the video / audio signal input from the broadcast wave processing unit 20, the external device IF unit 21, the network IF unit 22, or the like. In another embodiment, the above-described plurality of processes may be performed on a video / audio signal input from a storage medium (not shown) connected to the television receiver 10. Further, the signal processing control unit 40 can perform the above-described plurality of processes on not only the video / audio signal but also text information as content data. Further, the signal processing control unit 40 does not execute the error detection process, but the broadcast wave processing unit 20, the external device IF unit 21, the network IF unit 22, and the like, which are blocks for acquiring content data, execute the error detection process. Then, the processing result may be notified to the signal processing control unit 40.

  In the present embodiment, a television receiver is taken as an example of an information acquisition apparatus to which the configuration according to the present invention is applied. However, an embodiment such as an HDD recorder, a DVD recorder, a personal computer, a mobile portable terminal, a set-top box, or the like having the same configuration as the main configuration of the information acquisition apparatus according to the present embodiment may be used. That is, the display 51 and the speaker 52 may be an embodiment connected to the outside of the information acquisition apparatus to which the configuration according to the present invention is applied. In the embodiment of the present invention, various aspects can be applied to items such as broadcast wave type, content data format, signal acquisition path, and the like.

  With such a configuration, the television receiver 10 according to the embodiment of the present invention detects the defect data included in the content data, and transmits the complementary data for complementing the detected defect data to the content-related information. In response to a request to a specific server at the network destination connected via the network IF unit 22 at a predetermined timing. That is, when the television receiver 10 requests the specific server connected to the connected network to transmit the complementary data for complementing the defect data of the content data, the television receiver 10 executes the complementary data transmission request / Non-execution can be automatically controlled according to specific conditions. The plurality of processes are mainly executed by the signal processing control unit 40.

  Next, referring to FIG. 2, each block that is provided in the signal processing control unit 40 described in FIG. 1 and that executes a plurality of processes such as a data request process that requests transmission of complementary data according to content-related information. explain.

  FIG. 2 is a system configuration diagram of each block that executes a plurality of processes such as a data request process that requests transmission of complementary data according to content-related information in the present embodiment.

  The signal processing control unit 40 according to the present embodiment includes a related information extraction unit 201, a data processing unit 202, an error detection unit 203, a complement processing unit 204, an OSD generation unit 205, a reproduction unit 206, a data management unit 207, and the like. Yes.

  The related information extraction unit 201 extracts content related information from signals input from the broadcast wave processing unit 20, the external device IF unit 21, the network IF unit 22, and the like, and extracts the extracted content related information into the OSD generation unit 205 and the data Output to the management unit 207 or the like. For example, in the case of content data in the MPEG format, content related information is extracted from a section separated from a video / audio packet.

  The data processing unit 202 executes demodulation / decoding processing on video / audio information included in data input from the broadcast wave processing unit 20, the external device IF unit 21, the network IF unit 22, and the like. The audio / video information converted into a format that can be processed later is output to the reproduction unit 206, the data management unit 207, and the like.

  The error detection unit 203 detects defect data included in information input from the broadcast wave processing unit 20, the external device IF unit 21, the network IF unit 22, and the like, and sets defect data information for specifying the defect data. The data is output to the data management unit 207. In addition, the error detection unit 203 detects defect data included in the video / audio information read from the storage unit 60 via the data management unit 207, and again sets defect data information for specifying the defect data to the data management unit 207. Or output to the storage processing unit 204. For example, when the information (content data) input from the broadcast wave processing unit 20, the external device IF unit 21, the network IF unit 22, or the like is information that conforms to the MPEG format, the error detection unit 203 outputs video or audio. Defective data can be detected on a packet basis based on the continuity of the cyclic counter added to the packet to be separated.

  Based on the information specifying the content input from the data management unit 207, the complement processing unit 204 stores content-related information such as a genre related to the content and stored in the storage unit 60, and a defect corresponding to the content. The data management unit 207 is requested to transmit data information. Further, the complement processing unit 204 requests a specific server or the like via the network IF unit 22 to transmit complement data for complementing the defect data based on the information sent from the data management unit 207. To do. At this time, the complementary processing unit 204 makes a transmission request for complementary data for specific content according to the content-related information or a transmission request for complementary data using a specific communication method according to the communication method of the network IF unit 22 to be used. Execution or non-execution. Further, the complement processing unit 204 outputs the supplement data acquired via the network IF unit 22 to the reproduction unit 206 and the data management unit 207.

  The OSD generation unit 205 generates an OSD based on the content related information input from the related information extraction unit 201, the data management unit 207, and the like, and a video signal related to the generated OSD passes through a video signal synthesis unit (not shown). To display 51. The video signal synthesis unit (not shown) is a block that synthesizes and outputs a plurality of input video signals. The OSD generation unit 205 generates an OSD for setting content-related information and a communication method that are targets for non-execution of a defect data transmission request.

  Based on the video information input from the data processing unit 202, the data management unit 207, and the like, the playback unit 206 converts the video signal subjected to decoding processing to play back the video information into a video signal synthesis unit (not shown). To the display 51. Further, the reproduction unit 206 outputs, to the speaker 52, an audio signal subjected to decoding processing for reproducing the audio information based on the audio information input from the data processing unit 202, the data management unit 207, or the like. Further, the reproducing unit 206 replaces not only video information and audio information but also complementary data input from the complementary processing unit 204 with defect data, and uses it for reproducing video information and audio information.

  The data management unit 207 stores the content related information input from the related information extraction unit 201, the video / audio information input from the data processing unit 202, the defect data information input from the error detection unit 203, and the like in association with each other. Store to unit 60. The data management unit 207 also includes content-related information and defect data information requested to be transmitted from the complement processing unit 204, content-related information requested to be transmitted from the OSD generation unit 205, and video requested to be transmitted from the reproduction unit 206. Audio information and the like are read from the storage unit 60, and each read information is output to each requested block. That is, the data management unit 207 manages operations of information storage processing to the storage unit 60 and information reading processing from the storage unit 60. Further, the data management unit 207 outputs information for specifying the content to be played back by the playback unit 206 to the complement processing unit 204.

  With such a system configuration, a part of the signal processing control unit 40 according to the embodiment of the present invention can reproduce content data reproduction processing, data management processing for the storage unit 60, and defect data included in the content data. In addition to the error detection process to be detected, a data request process for executing or not executing a complementary data transmission request according to content-related information such as a genre can be executed.

Next, with reference to FIG. 3, the operation of a data request process that is executed by each block described with reference to FIG.
FIG. 3 is a flowchart for explaining the operation of the data request process associated with the content data reproduction process executed by each block described in FIG.
First, content to be subjected to playback processing is selected (S301). The content is selected by using the content selection screen (not shown) which is a GUI screen for the user of the television receiver 10 to select the content presented on the display 51, the operation unit 30, the remote controller RC, and the like. This is executed by operating the content selection screen and receiving the operation input information by the playback unit 206.

  Then, the playback unit 206 acquires the video / audio information of the content selected in step (S301) from the storage unit 60 via the data management unit 207. Further, the data management unit 207 outputs information for specifying the content to be played back by the playback unit 206 to the complement processing unit 204. Then, based on the information specifying the content to be reproduced notified from the data management unit 207, the complement processing unit 204 stores the content related information and defect data information related to this content and stored in the storage unit 60. Request to 207 to obtain (S302). The complement processing unit 204 is not only content-related information and defect data information of the content to be reproduced, but also request-related information that is information for specifying content-related information and a communication method that are targets for non-execution of the supplemental data transmission request. Execution information is also requested and acquired from the data management unit 207.

  Further, the complement processing unit 204 is based on the acquired request non-execution information, and the content related information of the content to be reproduced that is sent from the data management unit 207 is the content related target for which the supplement data transmission request is not executed. It is determined whether it is information (S303).

  If the content-related information of the content to be reproduced here is not the content-related information that is the target of not executing the complementary data transmission request (No in S303), the complementary processing unit 204 further adds the acquired request non-execution information. Based on this, it is determined whether or not the network IF unit 22 other than the communication method that is not to be used for the complementary data transmission request can be used (S304).

  When the network IF unit 22 other than the communication method that is not to be used for the complementary data transmission request is available (Yes in S304), the complementary processing unit 204 receives the data from the data management unit 207. Based on the transmitted defect data information, a request is made to a specific server or the like via the network IF unit 22 for transmission of complementary data for complementing the defect data (S305).

  The reproduction unit 206 is based on the supplement data that the supplement processing unit 204 requests through the network IF unit 22 and acquires from a specific server or the like, and the video / audio information acquired from the storage unit 60 through the data management unit 207. Then, the content data that can complement the defect data with the supplement data is reproduced (S306). In addition, the playback unit 206 determines that the content-related information sent from the data management unit 207 is content-related information that is a target of non-execution of a complementary data transmission request (Yes in S303), or a request for transmission of complementary data. If the network IF unit 22 other than the communication method to be used for non-execution is not available (No in S304), the complementary processing unit 204 does not acquire the complementary data, and thus includes defective data. Content data is reproduced (S306).

  In this way, the operation of the data request process accompanying the reproduction process of the content data including the defect data is executed by each block described in FIG. Then, in the data request process accompanying the content data playback process, if the related information is specific information according to the related information of the content to be played back, the complementary data for complementing the defect data of this content If the related information is not specific information, the operation for requesting the server to transmit the complementary data is mainly executed by the complementary processing unit 204.

  Accordingly, the data request process associated with the content data playback process is executed, for example, when a genre of music content is played back, a supplemental data transmission request is executed, and when a genre of sports content is played back, the supplement is performed. The data transmission request can be made non-executed. In other words, the user of the television receiver 10 makes a request for transmission of supplementary data for a genre that may cause trouble in reproduction of content including defect data and a genre that is desired to have no trouble in reproduction. Execution / non-execution can be selected. In addition, when the communication cost, the communication speed, and the like differ depending on the communication method, the user of the television receiver 10 can perform non-execution of transmission of complementary data using a specific communication method.

  Note that the data request processing operation may be performed not with the content data reproduction processing but with the content data movement or copying operation, for example.

  In the embodiment, the data request processing operation is not performed along with operations such as reproduction, movement, or copying of content data, but is performed each time the error detection unit 203 detects defective data. May be. However, since the content data may be deleted without executing the reproduction, movement or copying of the content data, the data request processing operation is accompanied by the operation such as reproduction, movement or copying of the content data. Preferably it is performed.

  Here, when processing such as content playback is started, it is necessary that content-related information and a communication method that are targets for non-execution of a complementary data transmission request have already been determined.

  That is, the content related information related to the target content is determined before the processing for the content data is started, and further, the communication method used for the complementary data transmission request is determined. Therefore, the television according to the embodiment of the present invention is used. The receiver 10 automatically controls execution / non-execution of the complementary data transmission request according to a specific condition when requesting transmission of complementary data for complementing the defect data of the content data. Can do.

Next, an example of a setting screen for setting content-related information or a communication method that is a target for which a complementary data transmission request is not executed will be described with reference to FIG.
FIG. 4 is a diagram illustrating an example of a setting screen for setting content-related information and a communication method that are targets for non-execution of a complementary data transmission request.
As described with reference to FIG. 3, when processing for content is started, it is necessary that content-related information and a communication method for which a complementary data transmission request is not executed have already been determined. Ten users can perform an operation for setting them in advance.

  The item setting screen for non-execution of a complementary data transmission request has an area for setting content-related information such as a genre, keywords 1 and 2 or a program name, and items such as a communication method. In the example of FIG. 4, “sports” is set as the genre, “soccer” is set as the keyword 1, and “wireless 1” is set as the communication method, and the keyword 2 and the program name are not set.

  When the setting of this example is performed, when the content related information of the target content is “sports” or “soccer” as the keyword, or the communication method is “wireless 1” in accordance with the processing for the content. When the network IF unit 22 is used, the complementary data transmission request is not executed. Further, the complementary data transmission request is not executed for other keywords or program names of the target content.

  That is, the plurality of items and communication methods related to the content related information are all determined by the OR condition, but may be determined by the AND condition in the plurality of items related to the content related information. At this time, for example, in the example of FIG. 4, when the content related information of the target content is “sports” for the genre and “soccer” for the keyword, or the network IF unit 22 with the communication method “wireless 1” is used. In this case, it is determined that the complementary data transmission request is not executed.

  In this way, the user of the television receiver 10 uses the setting screen shown in FIG. 4 or the like to set content-related information or a communication method that is a target for not executing a complementary data transmission request. Is possible. Therefore, execution / non-execution of a transmission request for supplementary data reflects the intention of the user whether the content to be reproduced is a genre that may be satisfactory for reproduction or a genre that is desired to have no problem for reproduction. Execution can be automatically controlled according to specific conditions.

  Note that content-related information is not set by the user of the television receiver 10 as an item for which the complementary data transmission request is not executed, but is managed within the television receiver 10. The content may be set based on the reproduction frequency for each content-related information (for example, genre). For example, each time the playback unit 206 plays back content data, the playback frequency management for each content-related information is notified to the complementary processing unit 204, the data management unit 207, and the like of the content-related information of the playback target content. This can be realized by the supplementary processing unit 204 and the data management unit 207 monitoring the reproduction history for each piece of content related information.

  In this embodiment, for example, when the reproduction frequency of the music content is high and the reproduction frequency of the sports content is low, when the music content is reproduced, a supplemental data transmission request is executed to reproduce the sports content. It is possible to automatically control the non-execution of the complementary data transmission request when reproducing the content according to the genre of the content.

  As described above, according to this embodiment, before executing a transmission request for complementary data for specific content data, for example, content-related information of the target content, a communication method used for the transmission request, and the like are determined. Therefore, when requesting transmission of complementary data for complementing defect data of content data, execution / non-execution of the complementary data transmission request can be automatically controlled according to a specific condition.

  The present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 10 ... Television receiver, 20 ... Broadcast wave process part, 21 ... External apparatus IF part, 22 ... Network IF part, 30 ... Operation part, 31 ... Light-receiving part, 40 ... Signal processing control part, 51 ... Display, 52 DESCRIPTION OF SYMBOLS ... Speaker, 60 ... Memory | storage part, 201 ... Related information extraction part, 202 ... Data processing part, 203 ... Error detection part, 204 ... Complementary processing part, 205 ... OSD production | generation part, 206 ... Reproduction part, 207 ... Data management part.

Claims (7)

Content acquisition means for acquiring content data and related information including a genre related to the content data from a broadcast wave;
Detection means for detecting defect data from the content data acquired by the content acquisition means;
If the related information is specific information according to the related information, the server does not request the server to transmit complementary data for complementing the defect data detected by the detection unit, and the related information is If it is not specific information, request means for requesting the server to transmit the complementary data;
An information acquisition apparatus comprising: Complementary data acquisition means for acquiring the complementary data requested by the request means;
The information acquisition apparatus according to claim 1, further comprising: Playback means for playing back based on the content data acquired by the content acquisition means and the complementary data acquired by the complementary data acquisition means;
Further comprising
The information acquisition apparatus according to claim 2, wherein the request unit requests the transmission before the reproduction unit reproduces the information.   The request means requests the transmission when the reproduction frequency of the related information related to the content data to be reproduced by the reproduction means is lower than a predetermined level based on the reproduction frequency for each related information. The information acquisition apparatus according to claim 3, wherein the information acquisition apparatus is not. Control means for controlling the content data acquired by the content acquisition means to move or copy the saved content data;
Further comprising
3. The information acquisition apparatus according to claim 2, wherein the control unit requests the transmission by the request unit before the movement or the copying.   6. The request unit according to claim 2, wherein the request unit does not request the transmission when a network communication method used for acquiring the complementary data by the complementary data acquiring unit is a specific communication method. 1. The information acquisition device according to 1. Relevant information including content data and the genre related to the content data is acquired from the broadcast wave
Detect defect data from the acquired content data,
If the related information is specific information according to the related information, the server does not request transmission of complementary data for complementing the detected defect data, and the related information is not the specific information. Requesting the server to transmit the supplemental data,
An information acquisition method characterized by that.

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