JP2009278559A - Tuner control apparatus, tuner control method, and tuner control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tuner control method by which tuning of overlapping channels is handled without requiring complicated selection operation by a user. <P>SOLUTION: A tuner control method, by which a channel code constituted of broadcast identification information and a channel number is interpreted, and tuning is indicated to a tuner for tuning to a channel by interpreting a channel number, includes: receiving overlap information constituted of a plurality of channel codes including the same channel number and operation information corresponding to the channel codes; and, in response to a tuning instruction based on a predetermined channel code, if the predetermined channel code is included in the overlap information, indicating the tuning by transmitting to the tuner the channel number included in the predetermined channel code and the operation information corresponding to the predetermined channel code. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tuner control device, a tuner control method, and a tuner that interpret a channel code composed of broadcast identification information and a channel number and instruct the tuner that selects a channel by interpreting the channel number. It relates to the control system.

  In recent years, terrestrial, BS, and CS digital broadcasting services have become widespread, and an environment in which these digital broadcasting services are viewed via a cable TV operator is provided. Specifically, a type of tuner called an STB (Set Top Box) is based on channel numbers designated by a tuner control device such as a recorder, and a plurality of channels provided by terrestrial, BS, and CS digital broadcasting services. Select the specified channel from among them, and send the video of the selected channel to the recorder. Thereby, the video of the channel selected via the recorder can be viewed and the video of the channel selected via the recorder can be recorded by the recorder.

  However, there is a problem of overlapping channel numbers in terrestrial, BS, and CS digital broadcasting services. For example, it is assumed that a BS channel number 101 and a CS channel number 101 exist and different programs are broadcast on both. In such a case, the tuner cannot determine whether the BS channel number 101 or the CS channel number 101 should be selected simply by specifying the channel number 101.

In such a case, a technique has been proposed in which the BS channel number 101 and the CS channel number 101 are presented to the user and selected (see Patent Document 1).
JP 2002-94889 A

  However, the above technique requires a troublesome selection operation by the user. In addition, for example, when channel duplication occurs corresponding to a recording reservation, the user may not be able to perform a selection operation.

  An object of the present invention is to provide a tuner control device, a tuner control method, and a tuner control system that can cope with channel selection of overlapping channels without requiring a troublesome selection operation by a user.

A tuner control apparatus according to an embodiment of the present invention interprets a channel code composed of broadcast identification information and a channel number, and tunes the tuner that selects a channel by interpreting the channel number and instructing channel selection. A control device,
This tuner control device includes a plurality of channel codes including the same channel number, duplicate information receiving means for receiving duplicate information composed of operation information corresponding to each channel code, and a channel selection instruction based on a predetermined channel code. When the predetermined channel code is included in the duplication information, the channel number included in the predetermined channel code and the operation information corresponding to the predetermined channel code are sent to the tuner. If the duplication information does not include the predetermined channel code, the channel number included in the predetermined channel code is transmitted to the tuner to select the channel. Station instruction means and a tuner that selects a channel based on the channel selection instruction and obtains an image. And a, a video reception means for receiving the video.

A tuner control method according to an embodiment of the present invention interprets a channel code composed of broadcast identification information and a channel number, and interprets the channel number to instruct the tuner that selects a channel to select a channel. A control method,
This tuner control method receives a plurality of channel codes including the same channel number and duplicate information composed of operation information corresponding to each channel code, and in response to a channel selection instruction based on a predetermined channel code, When the predetermined channel code is included in the duplicate information, a channel number included in the predetermined channel code and operation information corresponding to the predetermined channel code are transmitted to the tuner to select a channel. If the predetermined channel code is not included in the duplication information, the channel number included in the predetermined channel code is transmitted to the tuner to instruct channel selection, and the channel selection instruction The video transmitted from the tuner that selects the channel and obtains the video based on the channel is received.

A tuner control method according to an embodiment of the present invention interprets a channel code composed of broadcast identification information and a channel number, and interprets the channel number to instruct the tuner that selects a channel to select a channel. A tuner control method executed by a control device and a duplicate information management server connected to the tuner control device via a network,
The duplication information management server manages duplication information composed of a plurality of channel codes including the same channel number and operation information corresponding to each channel code, and transmits the duplication information to the tuner control device,
The tuner control apparatus receives the duplication information from the duplication information management server, and in response to a channel selection instruction based on a predetermined channel code, the duplication information includes the predetermined channel code. The channel number included in the predetermined channel code and operation information corresponding to the predetermined channel code are transmitted to the tuner to instruct channel selection, and the predetermined channel code is not included in the duplication information In this case, the channel number included in the predetermined channel code is transmitted to the tuner to instruct channel selection, and the channel is selected based on the channel selection instruction and transmitted from the tuner to obtain an image. Receive video.

The duplication information management server according to an embodiment of the present invention interprets a channel code composed of broadcast identification information and a channel number, and instructs a tuner that selects a channel by interpreting the channel number. A duplicate information management server connected to the tuner control device via a network,
The duplicate information management server manages a plurality of duplicate information composed of a plurality of channel codes including the same channel number and operation information corresponding to each channel code, and the plurality of duplicate information identifies the tuner. The tuner identification information and the service identification information for identifying the program service provider based on the channel code, the tuner identification information and the service transmitted from the tuner control device. Receiving a duplicate information request including identification information, selecting duplicate information corresponding to the tuner identification information and service identification information included in the duplicate information request from the plurality of duplicate information, and selecting the duplicate Information is transmitted to the tuner control device.

  ADVANTAGE OF THE INVENTION According to this invention, the tuner control apparatus and tuner control method which can cope with channel selection of an overlap channel can be provided, without requiring a troublesome selection operation by a user.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a program viewing / recording system (tuner control system) according to an embodiment of the present invention. As shown in FIG. 1, the program viewing and recording system includes a first device (tuner control device) 10, a second device (tuner) 20, and a distribution server (duplication information management server) 30.

  The first device 10 and the distribution server 30 are connected via a network. The first device 10 is a main device with respect to the second device 20, the second device 20 is a subordinate device with respect to the first device 10, and the first device 10 and the second device 20 are connected via a video signal line, and the infrared signal from the first device 10 can be received by the second device 20. The first device 10 is, for example, a hard disk recorder.

  The first device 10 includes an infrared transmission unit 11, a control unit 12, a video input unit 13, a recording processing unit 14, a storage unit 15, a code processing unit 16, a communication unit 17, and an operation unit 18. The second device 20 includes an infrared light receiving unit 21, a channel selection processing unit 22, a tuner unit 23, a video output unit 24, and a display unit 25. The distribution server 30 includes a control unit 31, a communication unit 32, and a storage unit 33.

  The first device 10 interprets a channel code composed of broadcast identification information and a channel number, and instructs the tuner to select a channel (channel number). On the other hand, the second device 20 selects a channel by interpreting the channel number.

  The channel code is indicated as C200-101, for example, and the first half C200 of the channel code indicates broadcast identification information, and the second half 101 indicates a channel number. Broadcast identification information is information for identifying terrestrial digital, BS, CATV, CS1, CS2, and the like. Therefore, as shown in FIG. 8, CATV channel number 101, CATV channel number 102, and CATV channel number 103 are shown as C200-101, C200-102, and C200-103. The BS channel number 101, the BS channel number 102, and the BS channel number 103 are indicated as C999-101, C999-102, and C999-103.

  Broadcast identification information such as C200 and C999 is set and managed for control / channel code management of the first device 10 and is not information that can be identified by the second device 20. For example, the second device 20 ignores the broadcast identification information even if it is received. Further, in order to select a channel, data is transmitted through infrared rays (remote control), and therefore a code that cannot be understood by the second device 20 cannot be transmitted. Therefore, instead of broadcast identification information, network switching (BS, CS, CATV) that can be understood by the second device 20 is transmitted from the first device 10. There is a second device 20 that bothers to display the duplicate channel selection screen even if this network switch is sent out. Therefore, as will be described below, the first device 10 sends a channel number and operation information to the second device 20 to automatically select a target channel.

  Since the first device 10 can interpret the channel code as described above, it can distinguish between C200-101 and C999-101. On the other hand, since the second device 20 only interprets the channel number, not the channel code, C200-101 and C999-101 cannot be distinguished (the second device 20 has C200 and C999). Broadcast identification information is not received or ignored). Therefore, when the first device 10 designates C200-101 using the duplicate information described later, the second device 20 automatically selects C200-101 from C200-101 and C999-101, and When the first device 10 designates C999-101, a system is provided in which the second device 20 can automatically select C999-101 from C200-101 and C999-101.

  The storage unit 33 of the distribution server 30 stores duplicate information to be described later, and the communication unit 32 of the distribution server 30 sends the duplicate information to the first device 10 in response to the duplicate information request from the first device 10. Send to. The first device 10 transmits a control signal from the infrared transmitter 11 based on the duplication information, and controls the second device 20. The second device 20 transmits an image obtained by selecting a channel based on the infrared signal received by the infrared light receiving unit 21 to the first device 10 via the video output unit 24. The first device 10 outputs a video received via the video input unit 13 or records it with the recording processing unit 14.

  Here, the duplicate information managed by the distribution server 30 will be described. That is, the duplicate information stored in the storage unit 33 will be described.

  The duplication information is composed of a plurality of channel codes including the same channel number and operation information corresponding to each channel code. For example, duplicate information includes C300-211 (operation information: down, down, enter), C300-222 (operation information: down, down, enter), C999-211 (operation information: down, enter), C999-222 ( Operation information: composed of down, enter).

  6, FIG. 9, and FIG. 10 are diagrams for explaining the duplicate information managed by the distribution server 30 in more detail. The essence of the duplicate information is to identify the duplicate channel numbers in BS, CATV, etc. However, since the channel number differs depending on the provider of the program service, it is necessary to prepare duplicate information for each provider. Similarly, since the tuning method differs depending on the manufacturer of the second device (tuner), it is necessary to prepare duplicate information for each manufacturer of the second device. That is, as shown in FIG. 6 and FIG. 9, a plurality of duplicate information corresponding to a service ID for identifying a program service provider and a tuner ID for identifying the manufacturer of the second device (tuner) are displayed. It is necessary to prepare.

  FIG. 2 is a diagram illustrating a schematic configuration of the control unit 12 of the first device 10 illustrated in FIG. 1. As shown in FIG. 2, the control unit 12 includes a channel duplication information search processing unit 121, a channel duplication information analysis unit 122, a channel duplication information storage unit 123, a channel duplication determination unit 124, a channel selection processing unit 125, and a channel selection control signal. A transmission unit 126 is provided.

  FIG. 3 is a diagram illustrating an outline of operations of the first device 10, the second device 20, and the distribution server 30. FIG. 4 is a flowchart showing operations of the first device 10 and the distribution server 30. FIG. 5 is a flowchart showing operations of the first device 10 and the second device 20.

  Hereinafter, the operation of the program viewing and recording system, that is, the operation using the duplicate information will be described. As described above, the distribution server 30 manages a plurality of duplicate information. That is, duplicate information for service ID1 and tuner ID1, duplicate information for service ID1 and tuner ID2, duplicate information for service ID1 and tuner ID3, duplicate information for service ID2 and tuner ID1, duplicate for service ID2 and tuner ID2 I manage information.

  As shown in FIGS. 3 and 4, for example, at the time of initial setting or setting change of the first device 10 (ST101), the channel duplication information search processing unit 121 of the first device 10 is connected via the communication unit 17. A duplicate information acquisition request including a tuner ID and a service ID for identifying the second device 20 is transmitted to the distribution server 30 (ST102). That is, acquisition of duplicate information including a tuner ID of the second device 20 connected to the first device 10 and a service ID for identifying a program service provider used by the second device 20 The request is transmitted to the distribution server 30.

  As shown in FIGS. 3 and 4, the distribution server 30 receives the duplicate information acquisition request, analyzes the received duplicate information acquisition request (ST201), and if the distribution server 30 holds the duplicate information (ST202). YES), based on the tuner ID and service ID included in the received duplicate information acquisition request, the corresponding duplicate information is selected from a plurality of managed duplicate information (ST203). (ST204). As a result, the first device 10 downloads duplicate information corresponding to the model of the second device 20 of the connection partner and corresponding to the provider of the program service used by the second device 20. Can do. The first device 10 analyzes the downloaded duplication information by the code processing unit 16 and further analyzes by the channel duplication information analysis processing unit 122 (ST103), and the channel duplication information storage processing unit 123 analyzes the analyzed duplication information. It memorize | stores in the memory | storage part 15 (ST104).

  A specific example of the timing at which the first device 10 transmits a duplicate information acquisition request to the management server 30 is when the program service provider is initially set and when the setting is changed. Furthermore, there is an initial setting time and a setting change time of a second device (tuner) to which the first device 10 is connected. That is, when a change occurs in the program service provider or a change occurs in the second device to which the first device 10 is connected, a duplicate information acquisition request is transmitted to the management server 30. Is done. Or the time of the program schedule update provided to the 1st apparatus from the delivery server 30 is mentioned. In the present invention, the timing at which the first device 10 transmits a duplicate information acquisition request to the management server 30 is not limited to the above, and may be another timing.

  As shown in FIG. 3 and FIG. 5, the channel selection processing unit 125 of the first device 10 selects a channel for viewing (selection by channel button or program table) input via the operation unit 18. Channel selection) (ST301) or channel selection for recording reservation from the recording processing unit 14 (ST301), and the control unit 12 of the first device 10 stores data based on the channel selection instruction. The duplication information stored in the unit 15 is referred to (ST302, YES), and the second device 20 is controlled. That is, the channel duplication determination unit 124 of the first device 10 determines whether or not the predetermined channel code is included in the duplication information stored in the storage unit 15 in response to the channel selection instruction based on the predetermined channel code. To do. The channel selection control signal transmission unit 126 of the first device 10 determines the channel number and the channel number included in the predetermined channel code based on the determination that the predetermined channel code is included in the duplication information stored in the storage unit 15. Operation information corresponding to a predetermined channel code is transmitted to the second device 20 to instruct channel selection (ST303) (ST304). Further, the channel selection control signal transmission unit 126 of the first device 10 determines whether the predetermined channel code is included in the duplication information stored in the storage unit 15 based on the determination that the predetermined channel code is not included. The number is transmitted to the second device 20 to instruct channel selection (ST304).

  Here, an example will be described. It is assumed that the duplicate information stored in the storage unit 15 of the first device 10 includes C999-101 (operation information: enter) and C200-101 (operation information: down, enter). If the predetermined channel code is C999-101, the predetermined channel code is included in the duplication information. Therefore, the channel selection control signal transmission unit 126 of the first device 10 transmits the channel number 101 and the operation information (enter) via the infrared transmission unit 11. Further, even if the predetermined channel code is C200-101, the predetermined channel code is included in the duplication information. Therefore, the channel selection control signal transmission unit 126 of the first device 10 transmits the channel number 101 and operation information (down, enter) via the infrared transmission unit 11. However, if the predetermined channel code is C999-105, the predetermined channel code is not included in the duplication information. Therefore, the channel selection control signal transmission unit 126 of the first device 10 transmits the channel number 105 via the infrared transmission unit 11.

  As shown in FIGS. 3 and 5, when the second device 20 receives the channel number and the operation information (ST401), the second device 20 presents selection items of a plurality of channels corresponding to the received channel number (ST402), and further Based on the received operation information, a predetermined channel selection item is selected from a plurality of channel selection items (ST403) (ST404).

  For example, when the second device 20 receives the channel number 101 and the operation information (enter) via the infrared light receiver 21, selection of two channels corresponding to the received channel number 101 is performed as shown in FIG. Items (BS channel number 101 and CATV channel number 101) are presented, and the first selection item (BS channel number 101) is selected (enter) based on the received operation information (enter). Thereby, the video of the channel number 101 of the BS selected by the second device 20 is transmitted from the second device 20 to the first device 10, and the first device 10 provides the transmitted video for viewing. Or record. That is, the first device 10 can receive an image corresponding to a channel number included in a predetermined channel code.

  Further, when the second device 20 receives the channel number 101 and the operation information (down, enter) via the infrared light receiver 21, selection of two channels corresponding to the channel number 101 is selected as shown in FIG. Items (BS channel number 101 and CATV channel number 101) are presented, and the second selection item (CATV channel number 101) is selected (down, enter) based on the operation information (down, enter). As a result, the video of the CATV channel number 101 selected by the second device 20 is transmitted from the second device 20 to the first device 10, and the first device 10 provides the transmitted video for viewing. Or record. That is, the first device 10 can receive an image corresponding to a channel number included in a predetermined channel code.

  As described above, the second device 20 interprets the channel number and interprets the operation information (cursor operation information, decision input information). The specified channel number can be accurately selected. As a result, the first device 10 can obtain the video of the channel number designated by the target channel code. In addition, since the operation of the second device 20 is controlled using the operation information managed on the distribution server as described above, the first device 10 does not need to upgrade the software, etc. Even if there are duplicate channel numbers, the second device 20 can accurately select the channel number designated by the target channel code.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be obtained as an invention.

It is a figure which shows schematic structure of the program viewing-and-listening recording system (tuner control system) which concerns on one Embodiment of this invention. It is a figure which shows schematic structure of the control part of the 1st apparatus shown in FIG. It is a figure which shows the operation | movement outline | summary of a 1st apparatus, a 2nd apparatus, and a delivery server. It is a flowchart which shows operation | movement of a 1st apparatus and a delivery server. It is a flowchart which shows operation | movement of a 1st apparatus and a 2nd apparatus. It is a figure for demonstrating duplication information. It is a figure which shows the example of a display of the selection item of two channels corresponding to the duplicate channel number. It is a figure for demonstrating the duplicate channel number. It is a figure for demonstrating duplication information. It is a figure for demonstrating duplication information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... 1st apparatus, 11 ... Infrared transmission part, 12 ... Control part, 13 ... Image | video input part, 14 ... Recording process part, 15 ... Memory | storage part, 16 ... Code processing part, 17 ... Communication part, 18 ... Operation part 20 ... second device, 21 ... infrared light receiving unit, 22 ... channel selection processing unit, 23 ... tuner unit, 24 ... video output unit, 25 ... display unit, 30 ... distribution server, 31 ... control unit, 32 ... communication Part, 33 ... storage part

Claims (11)

A tuner control device that interprets a channel code constituted by broadcast identification information and a channel number, and instructs the tuner that selects a channel by interpreting the channel number,
Duplicate information receiving means for receiving duplicate information composed of a plurality of channel codes including the same channel number and operation information corresponding to each channel code;
Corresponding to a channel selection instruction based on a predetermined channel code, if the predetermined channel code is included in the duplication information, it corresponds to a channel number included in the predetermined channel code and the predetermined channel code. The operation information transmitted to the tuner is instructed to select a channel, and if the predetermined channel code is not included in the duplication information, the channel number included in the predetermined channel code is transmitted to the tuner. Channel selection instruction means for transmitting and instructing channel selection,
Video receiving means for receiving the video transmitted from the tuner to select a channel based on the channel selection instruction and obtain a video;
A tuner control device comprising: The duplicate information receiving means includes
A duplicate information request including tuner identification information for identifying the tuner and service identification information for identifying a program service provider based on the channel code is transmitted to a duplicate information management server;
The plurality of duplicate information managed by the duplicate information management server, the tuner identification included in the duplicate information request from among the plurality of duplicate information distinguished based on the tuner identification information and the service identification information Receiving the duplicate information corresponding to the information and the service identification information;
The tuner control device according to claim 1. In response to a channel selection instruction based on the predetermined channel code for viewing, the channel selection instruction means is included in the predetermined channel code if the predetermined channel code is included in the duplication information. The operation information corresponding to the channel number and the predetermined channel code transmitted to the tuner is instructed to select a channel, and when the predetermined channel code is not included in the duplicate information, the predetermined channel Transmit the channel number included in the code to the tuner to instruct channel selection.
The tuner control device according to claim 1. The channel selection instruction means corresponds to a channel selection instruction based on the predetermined channel code for reserved recording, and if the predetermined channel code is included in the duplication information, the channel selection instruction means Operation information corresponding to the included channel number and the predetermined channel code is transmitted to the tuner to instruct channel selection. When the predetermined channel code is not included in the duplicate information, the predetermined information Transmit the channel number included in the channel code to the tuner to instruct channel selection.
The tuner control device according to claim 1. When there are a plurality of channels corresponding to channel numbers included in the predetermined channel code transmitted from the tuner control device, the tuner presents selection items of the plurality of channels,
The channel selection instruction means, when the predetermined channel code is included in the duplication information, the operation information for selecting a channel number included in the predetermined channel code from the selection items. Send to the tuner and instruct tuning
The tuner control device according to claim 1. A tuner control method for interpreting a channel code composed of broadcast identification information and a channel number, and instructing a tuner that selects a channel by interpreting the channel number,
Receiving duplicate information composed of a plurality of channel codes including the same channel number and operation information corresponding to each channel code;
Corresponding to a channel selection instruction based on a predetermined channel code, if the predetermined channel code is included in the duplication information, it corresponds to a channel number and the predetermined channel code included in the predetermined channel code. The operation information transmitted to the tuner is instructed to select a channel, and if the predetermined channel code is not included in the duplication information, the channel number included in the predetermined channel code is transmitted to the tuner. To select the channel,
Receiving the video transmitted from the tuner to select a channel based on the channel selection instruction and obtain a video;
A tuner control method characterized by the above. A duplicate information request including tuner identification information for identifying the tuner and service identification information for identifying a program service provider based on the channel code is transmitted to a duplicate information management server;
The plurality of duplicate information managed by the duplicate information management server, the tuner identification included in the duplicate information request from among the plurality of duplicate information distinguished based on the tuner identification information and the service identification information Receiving the duplicate information corresponding to the information and the service identification information;
The tuner control method according to claim 6. When there are a plurality of channels corresponding to channel numbers included in the predetermined channel code transmitted from the tuner control device, the tuner presents selection items of the plurality of channels,
If the predetermined channel code is included in the duplicate information, the operation information for selecting the channel number included in the predetermined channel code from the selection items is transmitted to the tuner. Instructing channel selection,
The tuner control method according to claim 6. A tuner control device that interprets a channel code composed of broadcast identification information and a channel number, interprets the channel number, and instructs a tuner that selects a channel to select a channel, and the tuner control device via a network A tuner control method executed by a connected duplicate information management server,
The duplicate information management server
Manage duplicate information consisting of multiple channel codes containing the same channel number and operation information corresponding to each channel code,
Sending the duplicate information to the tuner controller;
The tuner control device includes:
Receiving the duplicate information from the duplicate information management server;
Corresponding to a channel selection instruction based on a predetermined channel code, if the predetermined channel code is included in the duplication information, it corresponds to a channel number included in the predetermined channel code and the predetermined channel code. The operation information transmitted to the tuner is instructed to select a channel, and if the predetermined channel code is not included in the duplication information, the channel number included in the predetermined channel code is transmitted to the tuner. To select the channel,
Receiving the video transmitted from the tuner to select a channel based on the channel selection instruction and obtain a video;
A tuner control method characterized by the above. The duplicate information management server manages a plurality of duplicate information, and the plurality of duplicate information is a service for identifying a provider of a program service based on tuner identification information for identifying the tuner and the channel code. It is information distinguished by identification information,
The tuner control device transmits a duplicate information request including the tuner identification information and the service identification information to the duplicate information management server,
The duplicate information management server selects the duplicate information corresponding to the tuner identification information and the service identification information included in the duplicate information request from the plurality of duplicate information, and selects the selected duplicate information as the duplicate information. To the tuner controller,
The tuner control device receives the duplication information transmitted from the duplication information management server;
The tuner control method according to claim 9. Duplicate information management server connected via a network to a tuner control device that interprets a channel code composed of broadcast identification information and a channel number and instructs the tuner that selects the channel by interpreting the channel number. Is
Managing a plurality of duplication information composed of a plurality of channel codes including the same channel number and operation information corresponding to each channel code, and the plurality of duplication information includes tuner identification information for identifying the tuner and Information distinguished by service identification information for identifying a provider of a program service based on the channel code,
Receiving a duplicate information request including the tuner identification information and the service identification information transmitted from the tuner control device;
From the plurality of duplicate information, select the duplicate information corresponding to the tuner identification information and the service identification information included in the duplicate information request,
Transmitting the selected duplicate information to the tuner control device;
A duplicate information management server characterized by that.

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