JP2011124619A - Method of receiving lost content in storage type broadcast service and reception terminal unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a load of a complementing server and a portable communication network when distributing lost content via the portable communication network. <P>SOLUTION: A reception terminal unit 1 is equipped with: a renderer 12 for receiving content from broadcast waves; an external memory 14 for storing received content; and a control module 13 for calculating complementing communication start time. The control module 13 is equipped with: a communicable time zone determination unit 36 for deciding a communicable time zone by contract type; a first communicable range decision unit 38 for deciding a first communicable range by content type in the communicable time zone; and a second communicable range decision unit 39 for deciding a second communicable range by a data capacity scheduled for communication from the first communicable range. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a missing content receiving method and a receiving terminal device for receiving broadcast content that could not be received in a storage-type broadcasting service through complementary communication using a mobile communication network.

  Mobile multimedia broadcasting is a new broadcasting for mobile terminals that distributes various contents using the vacant frequency of radio waves after the end of analog terrestrial broadcasting. In addition to the real-time broadcasting service similar to 1Seg broadcasting, mobile multimedia broadcasting is a storage-type broadcasting service in which the receiving terminal device receives various contents when radio waves can be received and stores them in the memory of the receiving terminal device Is scheduled to be provided. Regardless of whether or not radio waves can be received, the viewer can use the service when he / she wants to use the service based on the accumulated content.

  On the other hand, a method of broadcast complementation is considered, in which a mobile terminal receives broadcast waves and detects missing or erroneous data from the accumulated data, and supplements data that has not been received normally by data communication using a mobile communication network. (For example, refer to Patent Document 1).

JP 2004-349932 A

  However, when delivering missing content via a mobile communication network, if access to the complementary server is concentrated from a large number of mobile terminals, not only will the load on the complementary server increase, but the mobile communication network may be pressed to another mobile phone. May affect service.

  The present invention has been made in view of the above points, and provides a complementary server for delivering missing content via a mobile communication network, and a reception method and receiving terminal device for missing content that can suppress the load on the mobile communication network. The purpose is to provide.

  In one aspect of the present invention, receiving means for receiving content distributed via a broadcast wave or a data communication network, storage means for storing content received by the receiving means, and content stored in the storage means Control means for acquiring missing content that could not be received at the time of distribution from the complementary server via a data communication network, and viewing processing for converting the content retrieved from the storage means into a viewable data format in response to a user operation And a playback device that plays back the content converted into the viewable data format, and the control means includes at least a contract type related to content viewing and a content type of the missing content. , Calculate the communication start time to download the missing content from the complementary server, and calculate The starting communication with the complementary server communication start time, characterized in that receiving the missing content.

  According to the present invention, the communication start time for downloading the missing content is calculated based on at least the information that can be acquired by the receiving terminal device such as the contract type related to content viewing and the content type of the missing content. In addition to distributing the complementary communication start time, it is possible to distribute the concentration of access to the complementary server while the status of other terminals cannot be grasped, and to prevent a problem that the data communication network is compressed.

  In the receiving terminal device, the control means sets the content received by the user under the intention of viewing spontaneously as the spontaneous content, and sets the content distributed from the distribution source regardless of the user's intention as the passive content. It is desirable to manage the content type and calculate the communication start time with the spontaneous content having a higher priority than the passive content.

  As a result, the received content is classified into voluntary content and passive content, and the content type is managed. Therefore, the voluntary content can be given higher priority than the passive content, and the user intends to voluntarily view the content. As for the content received below, the missing content can be reliably received early.

  In the receiving terminal device, the control means includes a communicable time zone determining means for determining a communicable time zone according to the contract type from a time zone allocated as a distributable time of missing content, and from within the communicable time zone A first communicable range determining means for determining a first communicable range according to the content type; and a second communication for determining a second communicable range from within the first communicable range based on a scheduled communication data capacity. And a possible range determination means.

  This makes it possible to determine the communicable time zone that greatly affects the communication start time depending on the contract type, which is a major factor in determining the priority among users, and then becomes a major factor in determining the priority between contents. Since the first communicable range is determined according to the content type, and the second communicable range is determined according to the scheduled communication data capacity that affects the actual communication time, the priority can be changed according to the contract type and the content type. At the same time, the communication start time to the complementary server can be distributed.

  In the receiving terminal device, the control means may determine the communication start time by a random number from within the second communicable range.

  Thereby, the communication start time can be further randomized within the second communicable range.

  In the receiving terminal device, when the content type is the passive content, the control unit determines a communicable time zone according to the contract type, and communication with the complementary server is performed using the determined communicable time. It may be performed after the band start time and at a time when the crosstalk state of the band is better than a predetermined value, and communication may be interrupted when the crosstalk state deteriorates below a predetermined value.

  As a result, further optimization can be achieved by performing passive content complementary communication only when the crosstalk state of the band is better than a predetermined value. If the crosstalk situation is worse than the predetermined value, the complementary communication is not completed, but there is no problem because the necessity and urgency for the user are low. In addition, there is a possibility that it overlaps in time with the complementary communication of the content whose content type is “spontaneous”, but the communication is interrupted whenever the mixed line situation deteriorates, so that the priority communication is not disturbed.

  In the receiving terminal device, the control unit obtains information on a crosstalk situation of a band from the complementary server or other communication device via a data communication network, and performs communication corresponding to a contract type according to the obtained crosstalk situation of the band. You may make it change a possible time slot | zone dynamically.

  In another aspect of the present invention, there is provided a method for receiving missing content in a storage-type broadcasting service, the step of receiving and storing content distributed via a broadcast wave or a data communication network, and receiving at the time of distribution of the content A step of acquiring from the supplementary server at least a contract type related to content viewing and the content type of the missing content. A receiving method is characterized in that a start time is calculated, communication with the supplementary server is started at the calculated communication start time, and the missing content is received.

  ADVANTAGE OF THE INVENTION According to this invention, the load of the complement server at the time of delivering missing content via a mobile communication network and a mobile communication network can be suppressed.

Functional block diagram of a receiving terminal apparatus according to an embodiment of the present invention Flow chart showing processing contents until the complementary communication start time is determined in the receiving terminal device The figure which shows the list structure for managing a content classification etc. in a data communication management part.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
The receiving terminal device according to the present embodiment is a portable terminal device configured to be compatible with a storage broadcast service for mobile multimedia broadcasting, and complements the missing content that could not be received as data communication via the mobile communication network. A function to acquire by communication is provided.

  FIG. 1 is a functional block diagram of a receiving terminal apparatus according to an embodiment of the present invention, and mainly shows a part related to reception of broadcast contents and reception of complementary communication contents. In FIG. 1, other functional blocks necessary to function as a mobile terminal device are omitted.

  The receiving terminal device 1 according to the present embodiment is a tuner unit 11 that receives broadcast waves, stores video / audio information (contents) received by the tuner unit 11, and reproduces the video / audio information and the like to be viewed. A renderer 12 for adding a viewing process, and a control module 13 for controlling the complementary communication start timing. In FIG. 1, the control module 13 includes a control module that processes EMM (Entitlement Management Message) information and ECM (Entitlement Control Message) information. The control module 13 is, for example, a CAS (Conditional Access Systems) module.

  The renderer 12 takes in a transport stream (TS: Transport Stream) that is a multiplexed signal of digital broadcasting output from the tuner unit 11. The transport stream can include EMM information, ECM information, and metadata in addition to the video / audio information constituting the broadcast content. The transport stream is composed of a signal sequence in which TS packets are continuous. A TS header is added with a packet header, and includes a packet identifier (PID) and a packet number indicating the type of the packet.

  A separation unit 21 is provided at the input stage of the renderer 12. The separation unit 21 separates the transport stream into video / audio information, EMM information, ECM information, metadata, and the like. The separated video / audio information is stored in the external memory 14. A viewing processing unit 22 is provided at the output stage of the renderer 12. The viewing processing unit 22 retrieves the video / audio information for which viewing rights have been acquired from the external memory 14 in accordance with the user's viewing operation, adds a viewing process for reproduction to the retrieved video / audio information, and performs reproduction. The output video signal is output to the display unit 15, while the audio signal is output to the speaker 16.

  The control module 13 includes an EMM receiving unit 31 that decodes the EMM information separated from the transport stream by the separating unit 21, and an ECM receiving unit 32 that similarly decodes the ECM information separated from the transport stream. The EMM receiving unit 31 decrypts the EMM information and acquires information for decrypting the personal contract information and the ECM information. At least the individual contract information of the decrypted EMM information is stored in the EMM storage unit 33. When the broadcasting station changes the contract status for each receiver (receiving terminal device 1), the latest personal contract information is accumulated for each receiver in the EMM storage unit 33 by sending the EMM information.

  The receiving terminal device 1 includes a data communication unit 34 that performs data communication and voice communication via a mobile communication network. In the present embodiment, the data communication unit 34 performs complementary communication using a mobile communication network for acquiring missing content. The data communication management unit 35 manages a complementary communication start time for acquiring missing content by complementary communication using a mobile communication network. The data communication management unit 35 may manage content types to be described later.

  The receiving terminal device 1 determines whether there is a missing content in the content received by the renderer 12. For example, if a missing packet has occurred in the video / audio information stored in the external memory 14, the missing packet is requested to the complementary server as a missing content. When making a complement request for missing content to the supplement server, it can be specified by the packet number of the missing packet. However, it is not limited to designation by a packet number. If the missing packet can be recognized by the complementary server, other specification methods can be used. For example, specification of packet, specification of Byte Range (one method of specifying from where to where Byte is missing) It may be.

  In the present embodiment, the complementary communication start time is calculated in each receiving terminal device 1 so that the complementary communication start timing of the missing content is distributed among users and is not concentrated in time. The contract type determination unit 36 determines the contract type from the contents of the individual contract stored in the EMM storage unit 33. In this example, description will be made on the assumption that there are three types of contracts: free (F), basic (B), and premium (P). Classifying the contract type in this way is preferable from the viewpoint of distributing the complementary communication start timing among users, but the present invention is not limited to such a contract type classification method. The communicable time zone determination unit 37 selects a communicable time zone determined in advance corresponding to the contract type. For example, the communicable time zone for complementary communication is Premium (P) = 2: 00 to 2:59, Basic (B) = 3: 00 to 3:59, Free (F) = 4 to 5 The time is 59 minutes. Here, each communicable time zone corresponding to the contract type is fixed, but it may be changed dynamically in response to a change command from a broadcast wave or a complementary server. In the case of a broadcast wave, it can be specified by additional information (metadata) that is received simultaneously when the content is broadcast.

  The communicable range 1 determination unit 38 determines the communicable range 1 according to the content type of the original content to which the missing content to be complemented belongs. For example, if the content type is spontaneous content, the first half range T1a of the communicable time zone T is determined, and if the content type is passive content, the second half range T1b of the communicable time zone T is determined. As the content type, the content that the user desires and receives is defined as “spontaneous content”, and the content distributed from the distribution source regardless of the user's intention may be defined as “passive content”. For example, there is content purchased by the user on his / her own intention as spontaneous content. In addition, various types of content such as content that is presumed to be suitable for each customer by analyzing customer preferences as passive content, recommended content for distribution sources, content at the top of the ranking, and the like are assumed. Although it is preferable to classify content types into “spontaneous content” and “passive content” from the viewpoint of distributing complementary communication start timing among users, the present invention is limited to such content type classification methods. Not. The communication type 1 determination unit 38 is notified of the content type for each missing content.

  In the present embodiment, the data communication management unit 35 manages the types (spontaneous / passive) of content received by broadcast waves in a list. For example, each time content is stored in the external memory 14, content information (content name, communication data amount, content type) of the newly stored content is added to the list. It is determined from the operation history whether or not the content is acquired by operating the operation unit of the receiving terminal device 1, the content added by the user operation is determined as spontaneous content, and other content on the list is passive It may be determined that the content is specific content. Alternatively, the metadata may be analyzed to determine whether the content is recommended content. If the content is recommended content, the content may be determined to be passive content, and the other content may be determined to be spontaneous content.

  The communicable range 2 determination unit 39 determines the communicable range 2 according to the communication planned data capacity. For example, when the data amount threshold of the communication planned data amount is A> B, if the communication planned data amount x is x ≧ A, the first half range 1/3 of the communicable range 1 is determined as the communication time zone T2a. . If the scheduled communication data amount x is A ≧ x ≧ B, the intermediate range 1/3 of the communicable range 1 is determined as the communication time zone T2b. Further, if the scheduled communication data amount x is B ≧ x, the latter half range 1/3 of the communicable range 1 is determined as the communication time zone T2c. In this embodiment, the data communication management unit 35 manages the scheduled communication data amount x of the missing packet, and notifies the communicable range 2 determination unit 39 of the scheduled communication data amount x for each missing content.

  The communication start time calculation unit 41 calculates the start time of complementary communication for downloading the missing content from the supplement server for each missing content. The communication time range T determined by the communication time range determination unit 37, the communication range 1 determined by the communication range 1 determination unit 38 (T1a or T1b), and the communication range 2 determined by the communication range 2 determination unit 39 ( The transmission time is calculated for each user from T2a, T2b or T2c). Furthermore, a complementary communication start time is determined using a random number for the calculated transmission time.

Next, the operation of the present embodiment configured as described above will be described.
FIG. 2 is a flowchart showing the processing contents until the complementary communication start time is determined in the receiving terminal device 1. The tuner 11 receives the broadcast wave transmitted from the broadcast station, and the video / audio information of the received content is stored in the external memory 14. If the receiving terminal device 1 is unable to receive content during reception of broadcast waves, packets cannot be received during that time, resulting in missing packets. When the receiving terminal device 1 detects that a missing packet has occurred in the received content (step S1), the receiving terminal device 1 receives the missing content that is the content of the portion in which the missing packet has occurred. calculate.

Here, a case where the preconditions are defined as in the following a) to d) will be described.
As a communicable time for complementing the missing content by data communication, 5:59 am is allocated from 2:00 am which is a quiet time zone. The communication scheduled data amount is x, and the data amount threshold of the communication scheduled data amount is A>B> C. The contract types are Premium (P), Basic (B), and Free (F) contracts, and the priority is P>B> F.
a) The communication time zone T corresponding to the contract type is determined as follows.
Premium P: 2:00 am to 2:59 am Basic B: 3:00 am to 3:59 am Free F: 4:00 am to 5:59 am b) Communication range 1 corresponding to the content type Is defined as follows.
Spontaneous acquisition: first half
Passive acquisition: second half
c) The communicable range 2 corresponding to the communication planned data capacity is determined as follows.
x ≧ A: 1/3 of the first half
A ≧ x ≧ B: Medium 1/3
B ≧ x: 1/3 of the second half
d) Random number α that determines the communication start time
Use random number α (assuming = 5)

Under the above preconditions, description will be made assuming that the contract type of the receiving terminal device 1 is premium (P), the content type is spontaneous, and the communication scheduled data capacity x is x ≧ A.
The contract type determination unit 36 determines the contract type from the personal contract information stored in the EMM storage unit 33 (step S2). Since the contract type set in the personal contract information is premium (P), the communicable time zone determination unit 37 sets the communicable time zone T from 2:00 am to 2:59 am as the communicable time zone T. Determine (step S3). In this way, by considering the contract type, it becomes possible to preferentially perform complementary communication for users with high priority. Since the complementary communication of the user with high priority is started in the early period of the quiet time period, the complementary communication of the user with high priority can be completed relatively early.

  Next, the communicable range 1 determination unit 38 determines the communicable range 1 based on the content type managed in the list by the data communication management unit 35 (step S4). The data communication management unit 35 manages a list of configurations shown in FIG. The communicable range 1 determination unit 38 is instructed by the data communication management unit 35 as “spontaneous” as the content type, so that the communicable range 1 determines the first half range T1a. Thus, by considering the content type, it becomes possible to improve the distribution accuracy of the spontaneous content. Spontaneous content is considered to be content that users want to watch more than passive content, and users want to watch by starting complementary communication of such content earlier than complementary communication of passive content It becomes possible to complete the complementary communication of content early.

  Next, the communicable range 2 determination unit 39 determines the communicable range 2 from the scheduled communication data capacity managed in the list in the data communication management unit 35 (step S5). Since the communication planned data capacity x is x ≧ A, the communicable range 2 is determined to be the first half range T2a. Thus, by considering the data capacity, the complementary communication start time of the missing content having a relatively large data capacity can be advanced, and the possibility of completing the communication within the communicable time can be increased.

  The communication start time calculation unit 41 calculates a complementary communication start time based on the random number generated by the random number generation unit 42 (steps S6 and S7). The communicable time zone T is determined from 2:00 am to 2:59 am, from 2 am to 2:30 am from the communicable range 1, and from 2 am to 2:10 am according to the communicable range 2 It is limited. A random number is generated from the range in minutes of the total communicable time (2: 0 to 2:10), and the final complementary communication start time is determined. In this example, the random number is between 1 and 10, and since the random number α is 5, it is 2: 5. As described above, by using random numbers in addition to the above three elements, concentration of communication start time can be avoided.

  As described above, a user whose contract type is premium (P), content type is spontaneous, and communication scheduled data capacity x is x ≧ A starts supplementary communication from an extremely early time zone (step S8). .

Next, under the above preconditions a) to d), it is assumed that the contract type of the receiving terminal device 1 is premium (B), the content type is passive, and the communication scheduled data capacity x is A ≧ x ≧ B. .
Since the contract type is B based on the contract information extracted from the EMM storage unit 33 by the contract type determination unit 36, the communicable time zone determination unit 37 sets the communicable time zone to 3: 0 to 4:59. Further, since the content type acquired by the communicable range 1 determination unit 38 from the data communication management unit 35 is “passive”, the communicable range 1 becomes the second half range T1b. Furthermore, since the communication scheduled data capacity x acquired by the communicable range 2 determination unit 39 from the data communication management unit 35 is A ≧ x ≧ B, the communicable range 2 becomes the intermediate range T2b. Accordingly, the communicable time is from 4: 0 to 4:59 from the communicable range 1, and further from 4:20 to 4:40 by the communicable range 2. The communication start time calculation unit 41 determines the communication start time in the period from 4:20 to 4:40 based on the random number generated by the random number generation unit 42. In this example, it is a random number between 1 and 20, and since the random number α is 5, it is 4:25.

  The data communication management unit 35 determines the download order of the list from the complementary communication start time calculated by the communication start time calculation unit 41 for each missing content. When the complementary communication start time for the first priority content in the list has arrived, the data communication unit 34 is notified of information (content ID, packet number, etc.) for identifying the corresponding missing content. In response to the notification from the data communication management unit 35, the data communication unit 34 requests missing content from the complementary server. When the download of the first priority content in the list is completed, the download of the second priority content in the list is continuously started. Thereafter, similarly, the missing content is continuously downloaded according to the list order. The content distributed from the supplement server is received via the mobile communication network and stored in the external memory 14. As a result, the missing content is replenished to the receiving terminal device 1 and the complete content is downloaded.

  As described above, according to the present embodiment, time is set so as to preferentially perform supplementary communication of a user with high priority in consideration of the contract type, and the voluntary content is considered in consideration of the content type. Since the priority is set higher than that of the passive content, the complementary communication start time for the content that is a user with high priority and that the user desires to view can be automatically set to an early time. Moreover, by considering the data capacity, it is possible to increase the possibility of completing communication within the communicable time.

  In the receiving terminal device 1, information related to the band crossing status is acquired from the supplementary server or other communication device via the data communication network, and the communication possible time zone corresponding to the contract type is determined according to the crosstalk status of the acquired band. May be changed dynamically.

  By the way, when the content type is “passive”, it is expected that the user needs to download the content. Therefore, in the complementary communication of content whose content type is “passive”, the communication available time zone is determined from the contract type, and the complementary communication starts at a predetermined time in the determined communication available time zone, but the crosstalk situation of the band deteriorates Then, the communication may be interrupted, and the communication may be resumed when the crosstalk situation is improved. The receiving terminal device 1 predicts the crosstalk situation of the band from the packet loss value or the communication speed.

  Hereinafter, an outline of the operation will be described. When the content type is “passive”, complementary communication is arbitrarily started from within the communicable time period determined by the contract type. The complementary communication start time may be determined using a random number. If the packet loss value exceeds the specified value (preset), the complementary communication is interrupted. When the complementary communication is interrupted, a random number is generated again and the retry timing is determined. If the packet loss value again exceeds the specified value during re-communication, communication is interrupted again, random numbers are generated, and the retry timing is determined.

  Note that the communication speed may be used as an alternative to the packet loss value. If the communication speed decreases, it is considered that communication with another terminal is occurring, and communication is interrupted in order to give priority to communication with another terminal.

  In this way, further optimization can be achieved by performing passive content complementary communication only under a crosstalk situation in which the packet loss value is equal to or less than a specified value (preset). When the situation where the packet loss value exceeds the specified value (preset) continues, the complementary communication is not completed, but there is no problem because the necessity and urgency for the user are low. In addition, there is a possibility that it will overlap in time with complementary communication of content whose content type is "Spontaneous". There is no obstruction.

Further, the following method can be applied as a method for determining the communicable range 2.
The communicable range 2 may be determined based on the comparison result by comparing the average communication speed (A) per minute with the scheduled communication data amount (x).

  For example, when x / A is equal to or longer than the communicable time, a random number α is generated, and the communicable range start time + α is set as the complementary communication start time. Here, “communication available time” refers to the end time of the communication available time zone assigned to the complementary communication for the lost packet from the range start time of the communication available range 1 determined by the communication available range 1 determination unit 38 ( This is the period until 5:59 am). “Communicable range start time” is the range start time of the communicable range 1 determined by the communicable range 1 determination unit 38. Complementary communication starts when the complementary communication start time comes, but communication is interrupted at the end time of the communicable time zone (5:59 am).

  When x / A is within the communicable time, the time calculated backward from the end time of the communicable time is set as the complementary communication start time. For example, in the case of x / A = 70, the complementary communication start time is 4:50, which is 70 minutes after 5:59.

  If the communicable range 2 is determined in this way, the scheduled communication data amount is likely to be different for each terminal, so that the communication start time can be distributed without using random numbers. Alternatively, random numbers may be used, and the calculation may be started from the calculation time + α.

  In general, if the communication schedule data amount of the missing content is large, the communication time between the complementary server and the terminal becomes long, and if the communication planned data amount is small, the complementary communication time becomes short. For this reason, when the scheduled communication data amount is large, it is desirable that the complementary communication start time is distributed over a wide range. When the planned communication data amount is small, there is no problem even if the complementary communication start time is close to the same time. it is conceivable that.

  Therefore, the random number range and the random value interval may be controlled in accordance with the communication planned data amount of the missing content. Specifically, when the scheduled communication data amount is large, a random number having a relatively long random number range and a wide random value interval is generated. When the scheduled communication data amount is small, random numbers having a relatively short random number range and a narrow random value interval are generated. The number of random numbers may be 3 or more. The communication start time in the communicable range 1 or the communicable range 2 is determined by the generated random value.

  In the above description, the missing content that could not be received by the tuner unit 11 of the terminal was acquired by data communication via the mobile communication network. However, the content distribution is not limited to broadcast waves, and the data communication unit 34 is The present invention can be similarly applied to missing contents that could not be received among the contents received via the network.

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

  The present invention can be applied to a mobile terminal that performs complementary communication of missing content in a storage broadcast service for mobile multimedia broadcasting.

DESCRIPTION OF SYMBOLS 1 Receiving terminal device 11 Tuner part 12 Renderer 13 Control module (CAS module)
DESCRIPTION OF SYMBOLS 14 External memory 15 Display part 16 Speaker 21 Separation part 22 Viewing processing part 31 EMM reception part 32 ECM reception part 33 EMM preservation | save part 34 Data communication part 35 Data communication management part 36 Contract type determination part 37 Communication possible time zone determination part 38 Communication Possible range 1 determination unit 39 Communication possible range 2 determination unit 41 Communication start time calculation unit 42 Random number generation unit

Claims (7)

Receiving means for receiving content distributed via a broadcast wave or a data communication network;
Storage means for storing the content received by the receiving means;
Control means for acquiring from the complementary server via the data communication network the missing content that could not be received at the time of distribution among the contents stored in the storage means;
A viewing processing means for receiving a user operation and converting the content retrieved from the storage means into a viewable data format;
Playback means for playing back the content converted into the viewable data format;
A receiving terminal device comprising:
The control means calculates a communication start time for downloading the missing content from the complementary server from at least the contract type related to content viewing and the content type of the missing content, and the complementary server is calculated at the calculated communication start time. And receiving the missing content by starting communication with the receiving terminal device.   The control means manages the content type as content that is received by the user under voluntary viewing intention as spontaneous content, and content distributed from the distribution source regardless of the user's intention as passive content, The receiving terminal apparatus according to claim 1, wherein the communication start time is calculated by setting the spontaneous content to a higher priority than the passive content.   The control means includes a communicable time zone determining means for determining a communicable time zone according to the contract type from a time zone assigned as a distributable time of missing content, and a first within the communicable time zone according to the content type. First communicable range determining means for determining the communicable range, second communicable range determining means for determining the second communicable range from the first communicable range according to the scheduled data capacity, The receiving terminal apparatus according to claim 1, further comprising:   The receiving terminal apparatus according to claim 3, wherein the control means determines a communication start time by a random number within the second communicable range.   When the content type is the passive content, the control means determines a communicable time zone according to the contract type, and communication with the supplementary server is performed after a start time of the determined communicable time zone. 3. The receiving terminal device according to claim 2, wherein communication is interrupted when the crosstalk state of the band is performed at a time better than a predetermined value and the crosstalk state becomes worse than the predetermined value.   The control means obtains information on band crossing status from the complementary server or other communication device via a data communication network, and dynamically sets a communicable time zone corresponding to the contract type according to the acquired crosstalk status of the band. The receiving terminal device according to claim 1, wherein the receiving terminal device is changed to: A method for receiving missing content in a storage-type broadcasting service,
Receiving and storing content distributed via broadcast waves or a data communication network; and
Acquiring from the supplementary server via the data communication network the missing content that could not be received during distribution of the content;
With
At least a communication start time for downloading the missing content from the complementary server is calculated from the contract type related to content viewing and the content type of the missing content, and communication with the complementary server is started at the calculated communication start time And receiving the missing content.

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