JP2014060587A - Terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To receive supplemental data for supplementing a reception deterioration part in a broadcast video recording content, while suppressing impact on the communication traffic.SOLUTION: A terminal 100 includes a broadcast reception unit for receiving a content transmitted by the broadcast wave, a communication unit for receiving a content transmitted over a data communication network, RAM (109) for storing the contents thus received, and a supplement control unit for acquiring the missing data that could not be received during broadcast, out of the stored contents received by the broadcast reception unit. A supplement server has a plurality of files generated by dividing the contents distributed by the broadcast wave. The supplement control unit includes a supplement request unit (304) for specifying a file containing the missing data thus detected out of the plurality of files, and transmitting the request of a specific file to the supplement server over the data communication network.

Description

  The present invention relates to a terminal device, and more particularly to a terminal device that receives broadcast content in a storage-type broadcast service.

  In recent years, mobile multimedia broadcasts (also referred to as MM broadcasts) have attracted attention as new broadcasts for mobile terminals that distribute various contents by using vacant frequencies of radio waves after the end of terrestrial analog broadcasts.

  Mobile multimedia broadcasting is a real-time broadcasting service that allows users to watch live video while receiving broadcasts, as well as one-segment broadcasting, and terminal devices receive various contents when radio waves can be received. Storage-type broadcasting service that stores in the memory.

  In addition, as a method of using a storage-type broadcasting service, a program broadcast in real time is stored as content data in a supplementary server on the broadcast station side, and the supplementary server stores the content stored in response to a request from the user's terminal device. There is a method for transmitting data.

  For example, when a recording control device mounted on a terminal described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-130169) fails to record a program reserved for recording, the recording control device requests the program and response information for the request. The requested program is stored in the program storage unit in the terminal.

  In addition, the stream data recording / reproducing method described in Patent Document 2 (Japanese Patent Laid-Open No. 2005-65232) is recorded including an error portion of stream data received with rain attenuation that cannot be corrected by itself. The data is corrected and reproduced by the update data obtained via the communication network.

JP 2010-130169 A JP 2005-65232 A

  However, in Patent Document 1, since the entire program that has failed to be recorded is received again, traffic related to communication increases and a load related to the network is applied.

  On the other hand, in Patent Document 2, when a device detects a TS packet including an error in a transport stream signal received from a broadcasting station, the TS data portion that has received a reception error at the time of broadcasting is determined based on the TS packet number information. Since it is received from the distribution station, it does not impose a load on the network compared to the method of receiving the entire program. However, since it is assumed that the data portion of the TS packet including an error is received, there is a possibility that correct update data cannot be acquired if the TS packet including the error is incorrectly specified on the device side.

  Therefore, an object of the present invention is to provide a terminal device that receives supplementary data for compensating for a reception deterioration portion in broadcast recorded content while suppressing the influence on communication traffic.

  A terminal device according to an aspect of the present invention includes a broadcast receiving unit that receives content transmitted by broadcast waves, a communication unit that receives content transmitted via a data communication network, and a storage unit that accumulates the received content. And a complement control unit that acquires missing data that could not be received at the time of broadcasting out of the content received by the broadcast receiving unit stored in the storage unit from the supplement server via the data communication network. The complementary server has a plurality of files generated by dividing content distributed by broadcast waves. The complement control unit includes a request unit that identifies a file including the detected missing data among the plurality of files, and transmits a request for the specific file to the complement server via the data communication network.

  Preferably, a recording control unit that records the content received by the broadcast receiving unit in the storage unit in real time is further provided, and the complementary control unit transmits the request during recording by the recording control unit.

  Preferably, the specific file according to the request is received from the complementary server during recording by the recording control unit.

  Preferably, the information processing apparatus further includes: a file storage unit for storing the specific file received from the complement server; and a reproduction unit for reproducing the content extracted from the storage unit in response to a user operation, and the reproduction unit is extracted. During the reproduction of the content, the portion containing the missing data is replaced with the specific file and the content is reproduced.

  Preferably, the content is multimedia data including moving image data, and the supplementary server has a plurality of files indicating different resolutions for each portion when the content distributed by broadcast waves is divided into a plurality of portions. When requesting more than a predetermined number of specific files, the complement control unit requests a file having a lower resolution among a plurality of files.

  According to one aspect of the present invention, a method for controlling a terminal device that communicates with a server having a plurality of files generated by dividing content distributed by broadcast waves receives the content transmitted by broadcast waves; Receiving the content transmitted via the data communication network; storing the received content in the storage unit; and receiving the broadcast content stored in the storage unit that cannot be received during broadcasting Obtaining the missing data from the complementary server via the data communication network. The step of acquiring from the complementary server includes the step of specifying a file including the detected missing data among the plurality of files and transmitting a request for the specific file to the complementary server via the data communication network.

  According to the present invention, a complementary file including the missing data for supplementing the missing data in the real-time broadcast recording content is received via the data communication network.

It is a figure explaining the outline of the mobile multimedia broadcast system according to an embodiment of the present invention. It is a functional block diagram of the terminal device according to an embodiment of the present invention. It is a figure which shows an example of the memory | storage data of the terminal device which concerns on embodiment of this invention. It is a block diagram of the complement server which concerns on embodiment of this invention. It is a processing flowchart of video recording and reproduction concerning an embodiment of the invention. It is a figure which shows the accumulation | storage broadcast data which concern on embodiment of this invention. It is a figure which shows typically the reproduction | regeneration control which concerns on embodiment of this invention. It is a figure which shows the manifest file which concerns on embodiment of this invention.

  Hereinafter, embodiments of the invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  A terminal device to which the present invention is applied is a portable terminal device configured to be compatible with a storage broadcast service of mobile multimedia broadcast according to ISDB-Tmm (Integrated Services Digital Broadcasting-Terrestrial Mobile Multi-Media). A function for executing the stored content complementing process is provided. In the present embodiment, a multifunctional mobile terminal such as a smartphone will be described as a portable terminal device. However, the present invention is not limited to the multifunctional mobile terminal and can be applied to other terminal devices in the same manner.

  Accumulated content supplement processing (also simply referred to as supplement processing) means that, in content-based broadcasting, when content cannot be completely received by broadcast waves, missing data is supplemented from the supplement server by communication via the data communication network. Is a process to complete.

  FIG. 1 is a diagram illustrating an outline of a mobile multimedia broadcasting system according to an embodiment of the present invention.

  Referring to FIG. 1, a mobile multimedia broadcast system includes a broadcast station content server 2 that stores a plurality of broadcast contents 900, and a base station 4 that distributes the broadcast contents 900 stored in the broadcast station content server 2 as broadcast waves. A terminal device 100 for receiving and storing broadcast content 900 distributed from the base station 4, displaying the stored broadcast content 900 on a display, and recording, and a complementary server 6 having a function corresponding to a computer; Is provided. In the present embodiment, the supplement server 6 has a function of distributing missing data of the broadcast content 900 via the data communication network in response to a supplement request from the terminal device 100.

  If the terminal device 100 cannot completely receive the broadcast content by the broadcast wave, the terminal device 100 transmits a complement request to the complement server 6 by the communication wave via the data communication network in order to complete the broadcast content. Receive missing data from to supplement broadcast content.

FIG. 2 is a functional block diagram of terminal apparatus 100 according to the embodiment of the present invention.
Referring to FIG. 2, terminal apparatus 100 includes a main control unit 101 that performs main control of a terminal, a communication control unit 102 that performs communication control using a carrier network that is a type of data communication network, and an antenna for carrier network communication. 103, a speaker 104 for outputting sound, a microphone 105 for inputting sound, a display unit 106 for displaying broadcast content, and a key control unit 107 for controlling keys for a user to operate the terminal , Nonvolatile and volatile storage units (ROM (Read Only Memory) 108 and RAM (Random Access Memory) 109) for storing programs and data, and WiFi (Wireless Fidelity), 3GPP (3rd as a kind of data communication network) A data communication control unit 110 that executes data communication according to the Generation Partnership Project), an antenna 111 for WiFi, 3GPP communication, Received between the antenna 203 for the bail multimedia broadcast, the broadcast tuner control unit 202 for performing tuner control of mobile multimedia broadcast, the broadcast main control unit 201 for performing main control of mobile multimedia broadcast, and the complementary server 6 The complement control unit for executing the missing data complement process corresponding to the degradation section, the recording reservation control unit 301, the communication state monitoring unit 303 for monitoring the communication state of the terminal, and the results monitored by the communication state monitoring unit 303 are as follows. A degradation period detection unit 305 that detects a reception degradation period of a received signal to be indicated, a reproduction segment data storage unit 306 for storing segment data indicating a specific segment for reproduction in a predetermined area of the storage unit, and a reproduction And a playback unit 307 having a playback switching unit 308 that switches the acquisition source of the content data at that time.

  The main control unit 101 corresponds to a microcomputer and includes a CPU (Central Processing Unit), a timer, and the like.

  The complement control unit includes an accumulation data request unit 302 for requesting accumulation of broadcast data and a complement request unit 304 for transmitting a complement request.

  FIG. 3 is a diagram showing an example of stored data of the terminal device 100 according to the embodiment of the present invention. Referring to FIG. 3, RAM 109 of terminal device 100 has an area E1 for storing a position data group including one or more position data 400, an area E2 for storing real-time broadcast recording data 500, It includes an area E3 for storing supplementary accumulated data 600 for complementing missing data in the real-time broadcast recording data 500, and an area E4 for storing a manifest file 700 received from the complementing server 6.

  Here, for simplicity of explanation, the terminal device 100 stores one piece of real-time broadcast recording data 500, but it may store two or more. In that case, a position data group, supplementary accumulated data 600 and a manifest file 700 are stored corresponding to each real-time broadcast recording data 500.

  FIG. 4 is a configuration diagram of the complement server 6 according to the embodiment of the present invention. The complement server 6 includes a CPU 601, an input unit 603, an output unit 604, a communication I / F (Interface) 605 for communicating with the broadcast station content server 2 and the terminal device 100, and a storage unit 602.

  The storage unit 602 includes volatile and non-volatile memories, and stores stored broadcast data 800 (to be described later) and data including a manifest file 700 corresponding to the stored broadcast data 800.

  FIG. 5 is a flowchart of recording and playback processing according to the embodiment of the present invention. FIG. 6 is a diagram showing stored broadcast data 800 according to the embodiment of the present invention. FIG. 7 is a diagram schematically showing reproduction control according to the embodiment of the present invention. FIG. 8 is a diagram showing a manifest file according to the embodiment of the present invention.

(Broadcast content)
Broadcast content 900, which is a program (object), has a moving image file format according to MP4 or the like that is time-divided into a plurality of blocks. ) In order according to MPEG-2 TS (Motion Pictures Expert Group 2 Transport Stream) and divided into TS packets of a predetermined size and transmitted to the terminal device 100. The TS packet includes a header and a main body for storing video data / audio data of the program. The header includes reference time information that is used to identify the number of the packet from the beginning (start of program broadcast) in the timeline and to synchronize and reproduce the data of the main body of each packet. .

(Accumulated broadcast data)
Stored broadcast data 800 in FIG. 4 is generated corresponding to broadcast content 900. Assuming that the corresponding broadcast content 900 itself is content including moving image data having a length of 25 minutes, the stored broadcast data 800 is obtained by compressing the broadcast content 900 according to MP4, for example, an identifier file1.mp4 for each 5 minutes. It has a structure divided into five moving image files indicated by ~ file5.mp4.

(Manifest file)
In the present embodiment, storage is performed in accordance with the provision of the manifest file of the stored contents of the first volume of ARIB (Association of Radio Industries and Broadcasting) TR-B333 (terrestrial multimedia broadcasting operation rule by segment connection transmission method). An XML (Extensible Markup Language) format manifest file (TmmManifest.xml) corresponding to the broadcast data 800 is defined.

  The manifest file 700 in FIG. 8 describes file management information such as a file structure related to the content and scenario information when the real-time type broadcast content is composed of a plurality of moving image files divided as the stored broadcast data 800. It is generated on the broadcasting station side corresponding to the stored broadcast data 800 in FIG. 6, and the five files file1.mp4 to file5.mp4 in FIG. 6 in the <scenario> element are reproduced in any order. Information on what should be done.

(flowchart)
With reference to FIG. 5, a description will be given of a process of complementing missing data in a deteriorated section of a received signal when recording a real-time broadcast content of multimedia broadcasting with the terminal device 100. A program according to the flowchart of FIG. 5 is stored in the ROM 108 in advance, and the processing is realized by the CPU of the main control unit 101 reading and executing the program from the ROM 108.

  Here, when reception deterioration is detected during reception of real-time broadcast content, a request for complementary data for complementing missing data in the reception deterioration section from the terminal device 100 side to the complementary server 6 (hereinafter referred to as a complementary request). Is sent.

  The CPU 610 of the supplementary server 6 creates the accumulated broadcast data 800 of the broadcast content 900 and stores it in the storage unit 602 in advance, and stores it in the storage unit 602 in which the corresponding manifest file 700 is created. The complementary server 6 generates accumulated broadcast data 800 in a moving image file format according to MP4 or the like obtained by time-dividing the stream data of the real-time broadcast content 900 into a plurality of blocks, and stores it in the storage unit 602.

  In the manifest file, content information related to content in the case where the real-time broadcast content is composed of moving image files divided as storage-type broadcast data is described (see FIG. 7).

  In the present embodiment, on the broadcast station side, the accumulation broadcast is performed before the start timing of the real-time broadcast content 900 associated with it or the time zone of the real-time broadcast on the accumulation broadcast data 800 for complement request ( Broadcast schedule should be organized so that storable broadcast data can be acquired.

  First, the CPU of the main control unit 101 accepts a recording reservation for a real-time broadcast program (step S3). Specifically, the CPU inputs recording reservation information of a broadcast program based on a key operation by the user via the key control unit 107.

  When the user makes a recording reservation for a broadcast program that is a real-time broadcast content, the storage data request unit 302 makes a storage reservation for the storage request broadcast data 800 for complementation associated with the real-time broadcast content (step S5). The accumulation reservation data is stored in a predetermined storage area. The operation for accumulating the supplementary accumulated data 600 in the RAM 109 (the operation of the complement control unit and the degradation interval detecting unit 305, etc.) is that the accumulation reservation data is detected to be stored in a predetermined storage area. Is started (activated) in response to

  Note that the stored broadcast data 800 is not limited to a method of storing the stored broadcast data 800 in the storage unit 602 in advance, and is cut out from the stream data of the real-time broadcast content 900 to a moving image file in real time at the timing when the complement request is received from the terminal device 100. A method of performing an encoding process may be used.

  The recording reservation control unit 301 compares the reserved recording time data with the time data output from the timer, and starts recording when it is determined from the comparison result that the recording start time is reached (step S7). Specifically, the recording reservation control unit 301 outputs recording information (information such as channel and time) reserved for the broadcast main control unit 201. The broadcast main control unit 201 outputs tuning data to the broadcast tuner control unit 202 based on the input recording information. The broadcast tuner control unit 202 controls a tuning operation of a tuner (not shown) based on data from the broadcast main control unit 201. Thus, the real-time broadcast content 900 of the reserved program is received via the antenna 203. The recording reservation control unit 301 stores the received content as real-time broadcast recording data 500 in the area E2 of the RAM 109. At the start of recording, a corresponding manifest file is transmitted from the supplementary server 6 to the terminal device 100 and stored in the area E4 of the RAM 109 of the terminal device 100 at the start of recording.

  When receiving the real-time broadcast content 900, the terminal device 100 determines whether or not the reception level has deteriorated (step S9).

  Specifically, the degradation determination unit is a function of the communication state monitoring unit 303, and detects reception intensity (unit: decibel) or reception error frequency based on the output of the antenna 203. Then, the detection value is compared with the threshold value, and when it is determined from the comparison result that the state where the detection value exceeds the threshold value has continued for a certain period of time or more, it is determined that the reception level is deteriorated. Here, “degradation” means that there is a partial or complete loss of the data of the packet, or that it is difficult to reproduce a normal image or sound from the data of the packet and is a received signal level. Show.

  If it is determined that there is no deterioration, that is, the reception level is good (NO in step S9), the process proceeds to step S16, but if it is determined that it is deteriorated (YES in step S9), the deterioration section detection unit 305 Based on the output of the deterioration determination unit, the determined reception deterioration section is detected (step S11).

  Specifically, the position determined to be deteriorated by the deterioration determining unit is detected. This is called a complementary start position 1. After the deterioration determination, the reproduction position is detected when the reception level recovers and the deterioration determination unit determines that the reception state is good. This is called a complementary end position 1. Therefore, the reception period from the complement start position 1 to the complement end position 1 is a reception deterioration section.

  Referring to FIG. 6, the reception deterioration section is shown in association with the timeline of stored broadcast data 800. 6 shows a supplementary start position T1 indicating a supplementary start position 1 and a supplementary end position T2 indicating a supplementary end position 1 in association with the timeline of the stored broadcast data 800, that is, the timeline of the corresponding real-time broadcast content 900. In the region between the complementary start and end positions T1 and T2, the shaded area corresponds to the reception deterioration section.

  The degradation section detection unit 305 searches the manifest file 700 (FIG. 8) in the region E4 based on the reference time information in the header of each packet received immediately before the complement start position T1 and immediately after the complement end position T2. From 700, the identifier “file2.mp4” of the moving image file corresponding to the scene-id element corresponding to the reference time information is specified (step S13).

  Also, the corresponding start / end attribute value is read, and from the read value, a complement start position 2 indicating the start position and a complement start position T3 indicating the complement end position 2 according to the timeline of the video file “file2.mp4” The complementary end position T4 is calculated as T3 = 05: 00 (sec) and T4 = 05: 00: 05: 00 = 10: 00 (sec).

  Here, since it is assumed that the reference time information in the header of the packet indicates a time according to the timeline of the real-time broadcast, it is possible to easily detect a reception degradation time interval from the reference time information. The complement start position T1 and the complement end position T2 are not limited to the method of detecting from the reference time information of the received packet, and the complement start position T1 synchronized with the timeline and the time data output from the timer of the main control unit 101 The complement end position T2 may be detected.

  Subsequently, the complement request unit 304 transmits a complement request including the identifier “file2.mp4” of the movie file to the complement server 6 via the communication control unit 102 in order to request the movie file corresponding to the reception deterioration section. (Step S15). Note that a supplement request is not transmitted again for a video file that has already been requested for completion.

  Thereafter, the CPU determines whether or not the recording of the real-time broadcast content by the recording reservation control unit 301 has been completed based on the header information of the packet received from the broadcast station (step S16). If it is not determined that the recording has ended (NO in step S16), the process returns to step S9, and the subsequent processes are repeated.

  On the other hand, if it is determined that the recording is finished (YES in step S16), a moving image file for complementing the recording data in the reception deterioration section which is a response to the complement request is received from the complement server 6 (step S17). Here, for simplification of explanation, it is assumed that only the complement request including the identifier “file2.mp4” is transmitted.

  The CPU 601 of the complement server 6 searches the stored broadcast data 800 in the storage unit 602 based on the complement start and end positions T3 and T4 included in the complement request received from the terminal device 100 via the communication I / F 605, and the moving image file file2 . Since mp4 is transmitted, the terminal device 100 receives this. The terminal device 100 side stores the data as complementary accumulation data 600 in the area E3 of the RAM 109.

  Thereafter, a recording end process is performed (step S19). Note that there may be a case where the acquisition process of the complementary moving image file continues even after the recording is completed.

  After the end of recording, the playback section data storage unit 306 associates the detected complement start and end positions T1 and T2 with the complement start and end positions T3 and T4 and stores them in the area E1 as position data 400. (Steps S21 and S23). The position data 400 is associated (linked) with the real-time broadcast recording data 500 and the supplementary accumulated data 600 corresponding to the areas E2 and E3 using pointer data or the like. Thereby, with respect to each moving image file indicated by the supplementary accumulated data 600 for complementing the content in the reception deterioration section, the beginning and the end are associated with the complement start and end positions T3 and T4, so that the movie file is It becomes possible to store a correspondence as to which reproduction position on the timeline of the real-time broadcast recording data 500 is located.

  After recording, when a playback instruction is input from the key control unit 107 (step S25), playback of the real-time broadcast recording data 500 is started. The reproduced moving image is displayed on the display unit 106, and the audio data is output from the speaker 104.

  When the reproduction instruction is input, the reproduction unit 307 reads the real-time broadcast recording data 500 from the area E2, and performs reproduction processing by decoding processing or the like.

  In the reproduction process, data is read from the head of the timeline, but the reproduction switching unit 308 determines whether or not the time interval to be complemented has been entered at regular timing (step S27). Specifically, the time data measured by the timer from the start of reproduction is compared with the time indicated by the corresponding position data supplement start position T3 in the region E1, and the determination is made from the comparison result (step S27). If it is determined that it has not yet entered the time interval to be complemented (NO in step S27), the process of step S27 is repeated while reproducing.

  If it is determined from the comparison result that the time interval to be complemented has been entered (YES in step S27), the reproduction switching unit 308 stops reproduction of the real-time broadcast recording data, and complements the area E3 associated with the position data 400. Reading of the accumulated data 600 (moving image file file2.mp4) is started. Thereby, the switching control of the reproduction moving image file is performed, and the reproduction of the complementary moving image file is started (step S29).

  The playback switching unit 308 determines whether or not the playback of the supplementary stored moving image file has ended (step S31). While it is not determined to end (NO in step S31), step S31 is repeated.

  On the other hand, if it is determined to end (YES in step S31), the playback switching unit 308 again seeks the position indicated by the complementary end position T4 of the position data 400 in the real-time broadcast recording data 500 in the area E2, and plays back from that position. Start (step S33). Alternatively, the supplementary accumulation data 600 is reproduced up to a reproduction position corresponding to the complement end position T2 of the corresponding position data 400, and seek playback of the real-time broadcast recording data 500 is started again from the complement end position T2 of the position data 400. Control may be used. The former can more reliably avoid the reproduction of the reception deterioration section.

  Thereafter, the playback unit 307 determines whether or not to end playback (step S35). For example, the determination is based on whether or not the information indicating the end of the supplementary accumulated data 600 has been reproduced. Alternatively, the determination is made based on whether or not a reproduction end instruction is input from the key control unit 107. While it is not determined that the reproduction has ended (NO in step S35), the reproduction continues (step S37), but when it is determined that the reproduction has ended (YES in step S35), the process ends.

(Modification 1)
The complement server 6 may store a plurality of file sets of the stored broadcast data 800 generated from the same broadcast content 900 in the storage unit 602. That is, when the broadcast content 900 is divided into the five files file1.mp4 to file5.mp4 described above, five file sets are generated. For example, a set of file1.mp4 is composed of two files, a high resolution, that is, a file with a large capacity size, and a low resolution, that is, a file with a small capacity size. The same applies to the other pairs of file2.mp4 to file5.mp4.

  In operation, when the terminal device 100 needs to acquire a plurality of complementary video files of a certain number or more as a result of the determination by the deterioration determining unit, the terminal device 100 has a low resolution, that is, a small file size (one segment). Requests a complementary video file that is similar to the image quality) and obtains it via communication. Thereby, even if it is a case where it is necessary to acquire the moving image file for a complement, communication traffic can be reduced. When a plurality of complementary video files less than a certain number are acquired, a complementary video file having a higher resolution, that is, a larger file size is requested and acquired. Thereby, it is possible to view a high-resolution reproduced image.

(Modification 2)
Although the resolutions are two types, low and high, for each of file1.mp4 to file5.mp4, a set of files with three or more different resolutions is prepared, and the terminal device 100 detects the traffic of the data communication network. Then, according to the detection result, any one of the three or more resolutions may be selected, and a file with the selected resolution may be requested from the complement server 6.

(Modification 3)
Further, although the terminal device 100 transmits the supplement request to the supplement server 6 during recording, the terminal device 100 may transmit the supplement request after the recording ends. Further, although the terminal device 100 receives the complementary moving image file corresponding to the supplement request after the recording is finished, the terminal device 100 may receive it during the recording.

(Effect of embodiment)
According to the present embodiment, in the recording function of real-time broadcast content in a portable terminal device such as a smartphone compatible with multimedia broadcasting, a reception deterioration section (missing data due to reception deterioration) is included in a part of the recording data due to reception deterioration of the broadcast wave. ) Is used, the content data of the limited portion in the reception deterioration section and its surroundings is acquired as stored data via communication immediately after recording or immediately after recording.

  Thereby, the influence on communication traffic can be suppressed. Also, when playing back recorded real-time broadcast content, the playback destination is automatically switched to the stored data that complements the reception deterioration section when the playback position of the reception deterioration section is reached, and the storage corresponding to the reception deterioration section is stored. When the reproduction of the data is completed, it is possible to provide a reproduction function of the recorded data of the real-time broadcast content without deterioration by switching the reproduction destination to the recorded data again to the real-time broadcast content.

(Other embodiments)
In the embodiment described above, the program according to the flowchart is recorded on a recording medium that can be read by the CPU of the main control unit 101 via a memory dry, such as a memory card (not shown) attached to the terminal device 100. Thus, the program can be provided to the terminal device 100 as a program product. Alternatively, the program can be provided by being received by the antenna 103 via the network and downloaded to the storage area of the RAM 109.

  The provided program product includes the program itself and a recording medium on which the program is recorded non-temporarily.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  2 broadcast station content server, 4 base station, 6 complement server, 100 terminal device, 110 data communication control unit, 201 broadcast main control unit, 202 broadcast tuner control unit, 301 recording reservation control unit, 302 accumulated data request unit, 303 communication Status monitoring unit, 304 complement request unit, 305 deterioration segment detection unit, 306 playback segment data storage unit, 307 playback unit, 308 playback switching unit, 400 position data, 500 real-time broadcast recording data, 600 complementary storage data, 700 manifest file , 800 stored broadcast data, 900 real-time broadcast content.

Claims (6)

A broadcast receiver for receiving content transmitted by broadcast waves;
A communication unit for receiving content transmitted via the data communication network;
A storage unit for accumulating received content;
A complement control unit that acquires missing data that could not be received during broadcasting out of the received content by the broadcast reception unit stored in the storage unit, from a supplement server via a data communication network, and
The complementary server is
It has multiple files generated by dividing the content distributed on the broadcast wave,
The complementary control unit
A terminal device, comprising: a request unit that identifies a file including the detected missing data among the plurality of files, and transmits a request for the specific file to the complementary server via the data communication network. A recording control unit for recording the content received by the broadcast receiving unit in the storage unit in real time;
The complementary control unit
The terminal device according to claim 1, wherein the request is transmitted during recording by the recording control unit.   The terminal device according to claim 2, wherein the specific file corresponding to the request is received from the complementary server during recording by the recording control unit. A file storage unit for storing the specific file received from the complement server;
A playback unit that plays back the content retrieved from the storage unit in response to a user operation;
The playback unit
4. The terminal device according to claim 1, wherein during reproduction of the extracted content, the portion including the missing data is replaced with the specific file and the content is reproduced. 5. The content is multimedia data including video data,
The complementary server is
When the content distributed by broadcast waves is divided into multiple parts, it has multiple files showing different resolutions for each part,
The complementary control unit
5. The terminal device according to claim 1, wherein, when requesting the specific file of a predetermined number or more, a file indicating a lower resolution among the plurality of files is requested. A method for controlling a terminal device that communicates with a server having a plurality of files generated by dividing content distributed by broadcast waves,
Receiving content transmitted by broadcast waves;
Receiving the content transmitted via the data communication network;
Accumulating received content in a storage unit;
Obtaining missing data that could not be received at the time of broadcasting out of the received content received on the broadcast wave stored in the storage unit, from a complementary server via a data communication network, and
In the step of acquiring from the supplement server,
A method for controlling a terminal device, comprising: specifying a file including the detected missing data among the plurality of files, and transmitting a request for the specific file to the complementary server via the data communication network.

Images