JP2004312718A - Ground digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ground digital broadcast receiver capable of widening a selection range in broadcast program as much as possible even in the limited number of registrations. <P>SOLUTION: In the ground digital broadcast receiver, a degree where the broadcast programs overlap between a registered channel and a non-registered one is evaluated for each non-registered channel within a preset number (a step S802), and a channel in which the degree of overlapping is evaluated low is registered preferentially (a step S803). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a digital terrestrial broadcast receiving apparatus, and more particularly to a technique for registering a channel to be selected within a predetermined number.

2. Description of the Related Art A terrestrial digital broadcast receiving apparatus is provided with a preset function of automatically registering a channel to be tuned in order to reduce the user's trouble at the time of installation. Specifically, registering a channel means, for example, assigning a channel to each of the channel selection buttons 1 to 12 and storing the channel.
Usually, the number of broadcasting stations (area stations) in the broadcasting area where the receiving device is installed is smaller than the number of tuning buttons (for example, 12). Therefore, if only the channel of the local station is assigned to the channel selection button, the channel selection button is left.

Therefore, if the receiving device can allocate the broadcast data from the broadcast stations (outside stations) in other broadcast areas in addition to the in-area stations to the tuning buttons, the number of tuning targets can be increased. A guideline issued by the Japan Electronics and Information Technology Industries Association (Non-Patent Document 1) describes that a channel of an out-of-area station due to cross-border reception as described above is assigned to an extra channel selection button.
The following is the procedure for presetting out-of-office stations indicated by these guidelines.
(1) If the remote control key identification of the out-of-area station does not overlap with that of the in-area station, it is assigned according to the number specified by the remote control key identification. Here, the remote control key identification is an identifier indicating which one-touch channel selection button is assigned to each channel. This is determined in advance so that channels in the same broadcasting area do not overlap.
(2) If the remote control key identification of the external station overlaps with that of the internal station, the remote area is assigned in ascending order of “area identification” and “regional operator identification” of the external station. Since the region identification and the region operator identification are included in the broadcast data of each channel, the receiving device can recognize them by receiving the broadcast data.
(3) If the remote control key identification of the out-of-area station does not overlap with the in-area station but overlaps with another out-of-area broadcasting station, it is a matter of product planning of each manufacturer.

Here, the procedure (3) is a product planning item of the maker, but it is conceivable that the assignment is performed in ascending order of “region identification” and “region carrier identification”, similarly to the procedure (2).
Document title: Digital Terrestrial Television Broadcasting Receiver Receiver Operation Guidelines Ver. 1.1 Publisher: Japan Electronics and Information Technology Industries Association TV Network Business Committee Terrestrial Digital Special Committee Remote Control Task Group Publication date: November 2002

  However, as described above, simply presetting in the order of “region identification” and “regional operator identification” is the same, even though the channel of a certain operator is already preset as an intra-area station, May be preset as out-of-office stations. In the case of the same company, all or a part of the broadcast program is often the same. Therefore, even if the out-of-area station is assigned to the surplus channel selection button, the number of channel selection targets may not be substantially increased.

  Accordingly, it is an object of the present invention to provide a terrestrial digital broadcast receiving apparatus capable of substantially increasing the number of channels to be selected when channels are allocated to a limited number of channel selection buttons.

  The terrestrial digital broadcast receiving apparatus according to the present invention is a terrestrial digital broadcast receiving apparatus that registers a plurality of channels to be tuned within a predetermined number, and each of the unregistered channels is already registered. Evaluation means for evaluating the degree of overlap of the broadcast program with the channel being broadcasted;

According to the above configuration, the terrestrial digital broadcast receiving apparatus preferentially registers an unregistered channel from a channel having a low degree of overlapping of a broadcast program with a registered channel. Thereby, when channels are assigned to a limited number of tuning buttons, the number of tuning targets can be substantially increased.
In addition, the evaluation unit is configured to acquire, for each of the plurality of channels, the carrier identification information for identifying the carrier broadcasting the channel, and that the carrier identification information matches with the already registered channels. And a determination unit that determines that the degree of duplication of the broadcast program is high if the included channel is included, and otherwise determines that the degree of duplication of the broadcast program is low.

  According to the above configuration, the terrestrial digital broadcast receiving apparatus specifies the business operator for each of the unregistered channels, and the broadcast program overlaps depending on whether the business operator matches the registered channel and the unregistered channel. The degree of the degree is determined. In general, if the operators are the same, a part or all of the broadcast programs are often shared, but if the operators are different, there is little possibility that the broadcast programs are shared. Therefore, the terrestrial digital broadcast receiving apparatus can substantially increase the number of channels to be selected by preferentially registering a channel different from a registered channel and a carrier among unregistered channels.

  In addition, the evaluation unit is configured to acquire, for each of the plurality of channels, sequence identification information for identifying a sequence of a business operator that broadcasts the channel, and that the sequence identification information matches with the already registered channels. And a determination unit that determines that the degree of duplication of the broadcast program is high if the included channel is included, and otherwise determines that the degree of duplication of the broadcast program is low.

  According to the above configuration, the terrestrial digital broadcast receiving apparatus specifies the series of the carrier for each of the unregistered channels, and broadcasts based on whether the series of the carrier matches between the registered channel and the unregistered channel. The degree of overlapping of the programs is determined. Here, the series is an organization for the purpose of mutually supplying general programs, news, and the like between the businesses. For this reason, in general, a part or all of the broadcast programs are often shared when the service providers have the same series, but there is little possibility that the broadcast programs are shared when the services are different. Therefore, the terrestrial digital broadcast receiving apparatus can substantially increase the number of channels to be selected by preferentially registering, among unregistered channels, channels having a different sequence from the registered channels.

  Further, the terrestrial digital broadcast receiving apparatus stores the broadcast area identification information for identifying a plurality of broadcast areas in a plurality of groups, respectively, and the evaluation means, for each of the plurality of channels, Acquisition means for acquiring broadcast area identification information for identifying an area to be broadcasted by a broadcaster, and a broadcast program if the already registered channels include channels of the broadcast area identification information belonging to the same group. And a determination unit that determines that the degree of overlap of the broadcast program is high, and otherwise determines that the degree of overlap of the broadcast program is low.

  According to the above configuration, the terrestrial digital broadcast receiving apparatus specifies the broadcast area for each of the unregistered channels, and includes the channels of the broadcast area belonging to the same group as the broadcast areas of the unregistered channels in the registered channels. The degree of duplication of the broadcast program is determined based on whether the broadcast program is duplicated. Here, for example, it is assumed that the broadcast area is Osaka, Kyoto, Hyogo, Nara, Shiga, and Wakayama, and the group indicates the Kinki wide area. Generally, if the group to which the broadcast area belongs is the same, there is a high possibility that the broadcast programs will overlap. If the group to which the broadcast area belongs is different, the possibility that the broadcast programs will overlap is low. Therefore, the terrestrial digital broadcast receiving apparatus can substantially increase the number of channel selection targets by preferentially registering, among unregistered channels, a channel to which a registered channel and a group to which a broadcast area belongs differ. .

  Further, the evaluation unit includes a recording unit that records a broadcast program watched by the user, an acquisition unit that acquires a broadcast program table of each of a plurality of channels, and a broadcast program table that has already been viewed. If the same broadcast program as the broadcast program is included, a determination unit that determines that the degree of overlap of the broadcast programs is high, and otherwise determines that the degree of overlap of the broadcast programs is low, may be included.

According to the above configuration, the terrestrial digital broadcast receiving apparatus determines the degree of program overlap based on the broadcast program watched by the user. Thereby, when it becomes possible to receive a new channel with the establishment of a broadcasting station or the like, it becomes possible to perform registration according to the user's preference.
Further, the evaluation unit includes a recording unit that records a genre of a broadcast program watched by a user, an acquisition unit that acquires, for each of a plurality of channels, information indicating a genre of each broadcast program in the channel, the acquisition unit If the information acquired by (1) includes the same genre as the genre of the broadcast program already viewed, it is determined that the priority of registering the channel is high; otherwise, the priority of registering the channel is low. May be included.

According to the above configuration, the terrestrial digital broadcast receiving apparatus determines the priority of channel registration based on the genre of the broadcast program watched by the user. Thereby, when it becomes possible to receive a new channel with the establishment of a broadcasting station or the like, it becomes possible to perform registration according to the user's preference.
Further, the terrestrial digital broadcast receiving apparatus may further include, in a case where the same number of channels as the upper limit number have already been registered, besides an unregistered channel and an already registered channel, The degree of duplication of the broadcast program is evaluated among a plurality of channels that are present, and if the degree of duplication of the broadcast program is higher than that of any of the unregistered channels, the already registered channel is evaluated. A means for deleting registration may be provided.

  According to the above configuration, the terrestrial digital broadcast receiving apparatus determines that the degree of duplication of the broadcast program between the unregistered channel and the registered channel is equal to the number of registered channels when the channel is registered to the upper limit. If the degree of overlap of broadcast programs between channels is lower than the degree of overlap, the registration of the already registered channel is deleted. This allows the terrestrial digital broadcast receiving apparatus to preferentially register a channel with a low degree of overlapping broadcast programs, even if the channel is registered to the upper limit.

  The terrestrial digital broadcast receiving apparatus according to the present invention is a terrestrial digital broadcast receiving apparatus that registers a plurality of channels to be tuned within a predetermined number, and each of the unregistered channels is already registered. Evaluation means for evaluating the degree of overlap of the broadcast program with the current channel, and presentation means for presenting to the user the degree of overlap of the broadcast program evaluated by the evaluation means.

According to the above configuration, the terrestrial digital broadcast receiving device evaluates the degree of duplication of the broadcast program for each of the unregistered channels, and presents the evaluation result to the user. Thus, the user can refer to the evaluation result when assigning a channel to the channel selection button, and can substantially increase the number of channel selection targets.
The program according to the present invention is a program for registering a plurality of channels to be tuned in a terrestrial digital broadcast receiving device within a predetermined number, and for each of the unregistered channels, An evaluation step of evaluating the degree of overlap of a broadcast program with a channel in which the broadcast program is located; and a registration step of preferentially registering a channel evaluated as having a low degree of overlap by the evaluation step.

  Further, the channel registration method according to the present invention is a channel registration method for registering a plurality of channels to be tuned within a predetermined number in a terrestrial digital broadcast receiving apparatus, wherein each of the unregistered channels is And an evaluation step of evaluating the degree of overlap of the broadcast program with a channel that has already been registered, and a registration step of preferentially registering the channel evaluated as having a low degree of overlap by the evaluation step. .

  If the program or the channel registration method of the above configuration is applied, the terrestrial digital broadcast receiving apparatus preferentially assigns unregistered channels to channels having a lower degree of overlapping of broadcast programs with registered channels in descending order. register. Thereby, when channels are assigned to a limited number of tuning buttons, the number of tuning targets can be substantially increased.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
FIG. 1 is a diagram illustrating an installation environment of the broadcast receiving device.
Each of the broadcasting areas 2 to 6 has a plurality of broadcasting stations, and each broadcasting station transmits broadcast data using a frequency band allocated to itself. Broadcast data is sent in the form of a transport stream (TS). An identifier called a region identification is assigned to each of the broadcast regions 2 to 6. In the example of FIG. 1, the broadcast receiving device is installed at a position 7 in the broadcast area 3. As for the region identification, the one described in ARIB technical document ARIB TR-B14 issued by ARIB Technical Data issued by the Association of Radio Industries and Businesses is used. According to the document, area identifications "1" to "6" are assigned to a wide area, and area identifications "10" to "62" are assigned to a prefectural area or the like. For example, “2” is assigned to the Kinki wide area, “40” is assigned to Osaka, and “44” is assigned to Nara.

FIG. 2 is a diagram showing a configuration of a main part of the broadcast receiving apparatus 101.
The receiving antenna section 121 receives a signal of the digital terrestrial broadcast 105. The received signal is sent to the frequency tuning unit 124, where a preset frequency is tuned.
The tuned signal is sent to the demodulation unit 126 and demodulated into the transport stream 106. The demodulated transport stream 106 is separated into an audio signal, a video signal, and a data signal by a separation unit 128, and an audio signal, a video signal, and a data signal corresponding to a desired service are respectively converted into an audio decoder 132, a video decoder 134, and a data decoder. 136.

The means by which the user selects a desired service will be described later in detail.
The audio signal, the video signal, and the data signal are decoded by the audio decoder 132, the video decoder 134, and the data decoder 136, respectively, and the decoded audio signal 107, video signal 108, and data signal 109 are generated. ), A display device (not shown), an output device (not shown), and other devices.

The broadcast receiving apparatus 101 includes a main body 110 having such a configuration, and a remote controller 160 separated therefrom.
The remote controller 160 has a remote controller 164, an operation input unit 166, and other components (not shown) as main components.
The remote controller 160 is mainly used by the user to operate the broadcast receiving apparatus 101, and particularly to perform some control on the broadcast receiving apparatus 101.

  The user performs some control on the broadcast receiving apparatus 101 by operating the operation input unit 166 of the remote control unit 160, and a control signal generated by the operation is transmitted to the communication unit 221 (see FIG. 2 (not shown in FIG. 2), is sent to the main unit 110, is received by the main unit, is sent to the main unit control unit 144, and the main unit control unit 144 performs control according to the control signal on a signal bus. This is done for each part via 118.

The control signal and other data are stored and stored in the memory unit 146 via the signal bus 118 as needed, and are read out and used as needed.
There are three main means for selecting a service to be received by the broadcast receiving apparatus 101 as follows. The broadcast receiving apparatus 101 receives and decodes a transport stream in which the selected service is multiplexed. In terrestrial digital broadcasting, a service is presented as an object of channel selection, that is, a channel.

FIG. 3 is a diagram illustrating a specific example of the operation surface of the remote controller 160.
The first is to operate the channel up 227 and channel down 228 buttons as means, and to sequentially tune in a predetermined order.
The order of selection can be determined in advance by a three-digit number determined from a service type, a remote control key identification (remote_control_key_id), and a service number.

  Among them, the service type and the service number are obtained from the service identification (service_id) of each service. The remote control key identification is given for each TS, and is obtained from the TS information descriptor relating to the TS on which the service is multiplexed. The TS information descriptor is described in a network information table (NIT). For details of these data formats, use those described in ARIB TR-B14 and the program arrangement information (ARIB STD-B10) used for ARIB standard digital broadcasting issued by the Association of Radio Industries and Businesses (ARIB). Can be.

The second is a tuning operation using the direct tuning unit 226 as a means.
The direct channel selection unit 226 is provided with a button for inputting a numerical value from 0 (zero) to 9.
In this method, the three-digit number and, if necessary, the branch number are directly input using these buttons, and the channel corresponding to the three-digit number is selected.

The third type is a channel selection using buttons provided with numbers from 1 to 12 provided in the one-touch channel selection unit 224 as a means. By pressing any one of these buttons, a channel preset in advance to the buttons with the numbers 1 to 12 is selected.
The preset operation of each button of the one-touch channel selection unit 224 for a channel selected by operating the button is an essential feature of the present invention. Therefore, the preset operation will be described in detail.

FIG. 4 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a channel.
The broadcast receiving apparatus 101 receives a preset instruction from the remote controller 160 and activates the preset function. The instruction of the preset is performed by an operation such as selecting from a menu displayed on the display device by pressing a menu key.
The main body control unit 144 instructs the frequency tuning unit 124 to sequentially tune all frequencies (step S302). Accordingly, the broadcast receiving apparatus 101 can sequentially receive all receivable broadcast data, that is, transport streams. In this transport stream, a network information table and a broadcast information table (BIT) are multiplexed.

  The broadcast receiving apparatus 101 selects only a transport stream having a reception state equal to or higher than a certain reference from a plurality of receivable broadcasts (step S303). The determination as to whether the reception state is equal to or higher than a predetermined reference can be made by measuring the signal-to-noise ratio (CNR) of the received radio wave. When the measured CNR is equal to or higher than the reference value, it can be determined that the reception state is equal to or higher than a certain reference.

  If the transport stream selected here includes that of the same broadcasting station, it is excluded (step S304). This is because terrestrial digital broadcasting sometimes transmits a broadcasting program of the same broadcasting station from different transmitting stations using different frequencies. Whether they are the same broadcasting station can be determined by referring to the transport stream identification (transport_stream_id) unique to the broadcasting station.

  The broadcast receiving apparatus 101 presets services multiplexed on these transport streams. Usually, a plurality of services are multiplexed in a transport stream, but in the following description, for convenience of explanation, it is assumed that the broadcast receiving apparatus 101 presets only one service from one broadcast station. Therefore, in the following description, the channel of a certain broadcasting station indicates one of the services broadcast by the broadcasting station.

At the time of the presetting, the broadcast receiving apparatus 101 first classifies the channels into the channels of the local station and the channels of the external station (step S305).
In this classification, a broadcasting station in the same prefectural area as the prefectural area in which the broadcast receiving device 101 is installed is defined as a local station. However, some operators do not have broadcasting stations in each prefecture area but have broadcasting stations in a wide area. In this case, a wide-area broadcasting station including the prefectural area where the broadcast receiving apparatus 101 is installed is classified as a local station. The prefecture area is, for example, Osaka Prefecture, Kyoto Prefecture, Hyogo Prefecture, and the like, and the wide area including those prefecture areas is the Kinki wide area. An out-of-area station is a broadcasting station other than the in-area station.

These determinations are mainly performed by the main body control unit 144 of the broadcast receiving apparatus 101, and the results are stored in the memory unit 146 via the signal bus 118 and used for subsequent control.
Next, the broadcast receiving apparatus 101 presets the channel of the local station (step S306). At this time, it is assumed that the preset number is set so that the number of the button provided in the one-touch tuning section 224 is equal to the remote control key identification of the channel of the local station. As a result, the channel of the local station is first preset to the button of the one-touch tuning unit 224.

  The remote controller key identification is determined in advance so as not to be duplicated in a local station in a certain area. Therefore, all the channels of the receivable local station can be preset to the buttons of the one-touch tuning section 224, which are numbered the same as the remote control key identification. Normally, presetting is not performed on all the buttons of the one-touch tuning section 224 only with the channel of the local station. Therefore, the broadcast receiving apparatus 101 attempts to preset the channel of the out-of-area station to the button of the one-touch tuning unit 224 which is not preset but is vacant.

Thereafter, the process of assigning the channel of the out-of-area station to a button (empty button) that has not been preset yet.
The broadcast receiving apparatus 101 determines whether or not the remote control key identification conflicts with the in-area station and another out-of-area station for each channel of the out-of-area station (step S307). Here, the contention of the remote controller key identification means that the remote controller key identification of a certain channel matches the remote controller key identification of another channel. The fact that a channel of an out-of-area station does not conflict with the remote control key identification of an in-area station means that the button corresponding to the remote control key identification of the out-of-area station channel is an empty button. In addition, the fact that the channel of the out-of-office station does not conflict with the remote control key identification of another out-of-office station means that there is only one channel of the out-of-office station that is a preset candidate for the empty button.

The broadcast receiving apparatus 101 presets a channel of an out-of-area station whose out-of-area station does not compete with the in-area station and other out-of-area stations for remote controller key identification as an empty button (step S308).
However, when the channel of a certain local station that is originally present cannot be received for some reason, the buttons of the one-touch tuning unit 224 with the same number as the remote control key identification of the local station are not preset and become empty. However, even if an out-of-area station having the same number and remote control key identification can be received, the out-of-area station is not preset on the button of the one-touch tuning section 224 and is left empty.

  Next, if the empty button still exists, the broadcast receiving apparatus 101 presets, as the empty button, a channel whose remote control key identification conflicts with an in-area station or another out-of-area station among channels of out-of-area stations. At this time, the broadcast receiving apparatus 101 evaluates the degree of program redundancy between a channel that has not yet been preset and a channel that has already been preset, and preferentially presets a channel with a low degree of program redundancy (step S309). Here, the degree of program overlap between two channels is indicated by the ratio of the time that programs broadcast on two channels within a predetermined unit time are exactly the same program to the unit time.

In step S309, presetting is performed in the following procedure.
(1) If there are a plurality of out-of-area stations corresponding to a certain empty button, one out-of-area station having a low degree of program overlap with a station that has already been preset is selected from these out-of-area stations and preset. This is performed for each empty button corresponding to a plurality of out-of-area stations.

(2) After that, the out-of-area stations that have not been preset up to that point are assigned priorities in ascending order of program overlap with stations that have already been preset, and are preset as empty buttons.
These (1) and (2) will be described in detail in order.
FIG. 5 is a diagram showing details of the preset method in consideration of the degree of program redundancy in the above (1).

  If there are a plurality of out-of-area stations having the same number of vacant buttons and the same remote controller key identification, the broadcast receiving apparatus 101 evaluates the degree of program redundancy for each of these out-of-area stations. First, it is determined whether or not the operators of these out-of-office stations are the same as the operators of the preset channels (step S332). Whether or not the operators are the same can be determined by the area identification and the area operator identification obtained from the service identification.

For example, if any of the following conditions are met, it is determined that the operators are the same.
(A) Both regional identification and local business operator identification are equal.
(B) Both the region identifications indicate Hokkaido or the Hokkaido area, and the region business identifications are equal.
(C) The local operator identifications are both equal at a specific value.
In general, the operator can be identified by a combination of the regional identification and the regional operator identification, but for some operators, the regional operator identification takes a specific value, and the operator is identified only by the regional operator identification can do. In this case, the operator is determined based on the above condition (c).

  Then, the broadcast receiving apparatus 101 determines that the program duplication degree is high for the channel whose service provider is the same as the preset channel, and lowers the preset priority. Conversely, for a channel that is different from the channel that has been preset, the channel is determined to have a low degree of program redundancy, and the priority for presetting is increased. Then, a channel determined to have a higher priority is preset to an empty button.

  Here, there may be a plurality of channels determined to have a higher priority. In this case, the broadcast receiving apparatus 101 further determines whether or not the channel sequence is the same as the channel sequence already preset. Here, the broadcast receiving apparatus 101 preferentially presets a channel that is different from the channel that has already been preset (step S334).

Whether or not the streams are the same can be determined by, for example, the stream identification described in the extended broadcast descriptor of the broadcast information table. As for the data format of the extended broadcaster descriptor, the one described in ARIB STD-B10 can be used.
Further, there is a case where there is no channel which is different from the channel which is already preset and the carrier. In that case, it is determined whether each channel is the same prefectural area station, a wide area station, or a non-wide area station, and if it is the same prefectural area station, it is determined that the program has the highest degree of redundancy among them. Subsequently, it is determined that the degree of program overlap is high in the order of the wide area station (excluding the same prefecture area station) and the wide area station. Here, the wide area station refers to a wide area broadcasting station including the prefecture area where the broadcast receiving device 101 is installed, and a broadcasting station of each prefecture area included in the wide area. For example, "wide-area stations based on Kyoto Prefecture" include broad-area stations that broadcast in the Kinki wide area, and broadcast areas in Shiga, Kyoto, Osaka, Hyogo, Nara, and Wakayama prefectures. Prefectural area bureaus are included. The outside-wide station is a broadcasting station other than the inside-wide station.

Here, whether it is a wide area station or a wide area station is determined by the following procedure.
The broadcast receiving apparatus 101 stores in advance information indicating which prefecture area is included in each wide area. First, the broadcast receiving apparatus 101 determines that a broadcasting station in the same prefectural area as the prefectural area in which it is installed is the same prefectural area station, and that the other stations are not the same prefectural area station.
The broadcast receiving apparatus 101, wide-area broadcasting station that contains the prefectural self is installed, and the broadcasting station of each prefecture included in the wide area, it is determined that the wide area within the station, the wide area outside otherwise it is determined that a station.

Then, the broadcast receiving apparatus 101 presets a channel determined to have the lowest degree of program duplication to an empty button (step S336).
Next, if there is still a vacant button and there is a channel that has not been preset, the broadcast receiving apparatus 101 preferentially presets an out-of-area station having a low degree of program overlap with a station that has been preset. This corresponds to the above procedure (2).

Hereinafter, the preset method in consideration of the degree of program redundancy in (2) will be described.
FIG. 6 is a diagram showing the details of the preset method in consideration of the degree of program redundancy in (2).
The broadcast receiving apparatus 101 performs the presetting with priority given to a channel different from the carrier of the channel which has been preset by the carrier among the channels which have not been preset (step S342).

Since the determination as to whether or not the operators are the same has already been described, the description will not be repeated.
Furthermore, when there are a plurality of channels of different operators, the broadcast receiving apparatus 101 performs a preset between the different operators by giving priority to the channels of the operators having different series (step S344).

The determination as to whether or not the sequences are the same has already been described, and will not be repeated.
Further, when the preset channel and the carrier are the same, the broadcast receiving apparatus 101 determines whether the station is the same prefectural station, a wide area station, or a wide area station. Among the tobaccos, it is determined that the degree of overlap of the program is the lowest, and then it is determined that the degree of overlap of the program is low in the order of the wide area station (excluding the same prefecture area station) and the same prefecture area station.

Then, the channels of these stations are preset to the empty buttons in the order in which the degree of duplication of the program is determined to be low, that is, in the order of the wide area station, the wide area station (excluding the same prefecture area station), and the same prefecture area station. (Step S346).
Hereinafter, a specific example in the case where presetting is performed according to the present embodiment will be described.
FIG. 7 is a diagram showing a specific example of the preset. It is assumed that terrestrial digital broadcast waves from each broadcast station shown in FIG. 7 can be received in a reception state of a certain standard or higher.

Numeral 61 shown in FIG. 7 is a button number of the one-touch tuning unit 224. Also, reference numeral 62 denotes a broadcast station classified as an in-area station, and 63 denotes a broadcast station classified as an out-of-area station. Numeral 64 denotes a broadcast station preset for each button, and numeral 65 denotes which step in FIG. 4 is preset.
Also, here, the broadcasting station is represented by three characters such as “Aa3 station”, the uppercase alphabet indicates a business, the lowercase alphabet indicates a series, and the number indicates a broadcasting area.

In this embodiment, broadcast receiving apparatus 101 performs presetting in the following procedure, as described above.
The broadcast receiving apparatus 101 first presets the channel of the local station (step S306). As a result, the channel of each broadcasting station is preset to the buttons of “1”, “2”, “4”, “6”, “7”, “8”, and “10”.

Next, the broadcast receiving apparatus 101 presets, out of the channels of the out-of-area stations, a channel whose remote control key identification does not conflict with the in-area station and other out-of-area stations (step S308). Among the out-of-area stations, the Pf4 station corresponds to a channel in which remote control key identification does not conflict with the in-area station and other out-of-area stations. As a result, the Pf4 station is preset to the “9” button.
Next, the broadcast receiving apparatus 101 selects and presets one out-of-area station having the lowest program priority for each vacant button among channels of the out-of-area station whose remote key identification conflicts with another out-of-area station. (Step S309 (1)). This step corresponds to the Hc4 station and the Aa2 station in the “3” button, and the Kd4 station and the Lx2 station in the “5” button.

Regarding the button “3”, the Hc4 station has a lower degree of program overlap than the Aa2 station, so the Hc4 station is selectively preset. This is because the Aa2 station is already preset with the "1" button for the Aa3 station with the same operator and affiliate, while the Hc4 station is not preset with the same operator and affiliate. .
For the button of “5”, the Kd4 station is selectively preset since the Kd4 station has a lower program overlap degree than the Lx2 station. This is because, for the Lx2 station, the Dx3 station with the same sequence has already been preset to the “7” button, whereas the Kd4 station has no preset station with the same sequence.

  Next, the broadcast receiving apparatus 101 preferentially presets the channels of stations that have not been preset so far, in ascending order of program priority (step S309 (2)). Of the channels that have not been preset so far, the Ne2 station has the lowest program overlap with the already preset channel, so this is preset to the button “11”. This is because a channel having the same operator and affiliated with the Ne2 station has not been preset yet. The next lowest program redundancy is the Gv2 station, the Jw2 station, the Lx2 station, and the My2 station, and any one of them is preset to the “12” button. Here, the Gv2 station is provisionally preset.

As described above, the broadcast receiving apparatus 101 evaluates the program duplication degree between each of the unregistered channels and the already registered channels, and gives priority to the channel evaluated as having a low program duplication degree. Preset to. Thereby, when channels are assigned to a limited number of tuning buttons, the number of tuning targets can be substantially increased.
In addition, the broadcast receiving apparatus 101 determines whether or not the reception state is equal to or higher than a certain reference by the CNR, but is not limited thereto. For example, the measurement can be performed by measuring the bit error rate (BER) of the stream after analog-to-digital conversion and comparing it with a value (reference value) set in advance in the broadcast receiving apparatus, or by another method. When the BER is used, when the measured value is equal to or less than the reference value, it can be determined that the reception state is equal to or more than a certain reference.

The broadcast receiving apparatus 101 is separated into a main unit 110 and a remote control unit 160, but the remote control unit 160 is not necessarily an essential component, and a component having an equivalent function is provided in the main unit 110. You may.
Note that, in the one-touch tuning section 224 of FIG. 3, each button is numbered from 1 to 12, but this is not necessarily essential. For example, other symbols, characters, and others may be described, or nothing may be described. Alternatively, a configuration in which the user can freely change the description content may be used. Further, the broadcast station name or service name of the broadcast preset by the user on the button may be described on the button.

As a method of selecting one of a plurality of services broadcast by a certain broadcasting station, a method of selecting a primary service of the broadcasting station and a method of selecting a service having the smallest service type or service number are conceivable. Alternatively, another method may be used. Here, as the definition of the primary service, the one described in ARIB TR-B14 can be used.
The instruction of the preset is made by selecting from the menu, but is not limited to this. For example, it may be performed by pressing a dedicated button or simultaneously pressing a channel up button and a channel down button.

  In step S304, the same broadcast station is excluded. However, if it is guaranteed that the same broadcast station is not included, this step is not always necessary, and the same broadcast station is included. In this case, the method may not always be performed. Alternatively, an embodiment in which determination is made based on whether both the region identification and the region operator identification are equal, or an embodiment in which determination is performed by another method may be employed. For example, if it is determined based on whether both the region identification and the region operator identification are equal, when the prefecture duplicate operation is performed, it is determined that the Fukuoka broadcasting station of NHK in Fukuoka prefecture and the Kitakyushu broadcasting station are the same broadcasting station. Then, only one of them can be left, or only one can be left after it is determined that the Shizuoka broadcasting station and the Hamamatsu broadcasting station, which are commercial broadcasters in Shizuoka Prefecture, are the same broadcasting station.

Note that the classification of the intra-area station and the extra-area station is not limited to the above-described method, and the area code set when the user installed the broadcast receiving apparatus is compared with the area identification obtained from the transport stream identification or the service identification. Alternatively, the same channel may be set as the channel of the local station, and the different channel may be set as the channel of the external station.
The area code is set by the user, but is not limited to this. For example, in a mode in which the broadcast receiving apparatus 101 is equipped with a GPS or other positioning system, a local code can be automatically set from the positioning result and some broadcast area map, or another method such as a mobile method can be used. A method of setting an area code using information on a base station of a body communication device, a station number of a fixed telephone, and various other methods are conceivable.

In step S332, it is determined whether the “business” is the same. However, the present invention is not limited to this, and it may be determined whether the “business and affiliate” are the same. It may be determined whether the “user and broadcast area” are the same.
Note that the broadcast receiving apparatus 101 evaluates the degree of program redundancy using the local business operator identification, the sequence identification, and the regional identification, but is not limited to this combination. For example, it may be any one of the regional operator identification, the series identification, and the regional identification, or a combination of any two of them. Further, the material for evaluating the degree of program duplication is not limited to these, and for example, an electronic program guide (EPG) may be used. In this case, the broadcast receiving apparatus 101 obtains a program guide for a certain period for each channel, and derives a rate at which the content of the program guide overlaps between a channel that has been preset and a channel that has not been preset. , The degree of program duplication can be evaluated.
(Embodiment 2)
In the first embodiment, it is determined whether or not the remote control key identification conflicts with the local station preset to the button of the one-touch tuning section 224 (FIG. 4, step S307), and the non-conflicting one is preset (FIG. 4, step S308). Then, the overlapping degree of the conflicting programs was evaluated, and the one having the lower overlapping degree was preferentially preset (FIG. 4, step S309).

However, in the above-described presetting method, a channel that does not conflict with remote control key identification is preset unconditionally, so that a channel different from the operator is not always preset.
Therefore, in the second embodiment, the program redundancy is evaluated for all the channels of the out-of-area station without determining the conflict of remote controller key identification with the in-area station.

FIG. 8 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a channel.
The broadcast receiving apparatus 101 receives a preset instruction from the remote control unit 160, activates the preset function, scans the frequency (step S502), selects one having a reception state equal to or higher than a predetermined reference (step S503), and excludes the same broadcast station. (Step S504), classification of the local station and the external station (step S505), and the local station is preset to a button having the same number as the remote control key identification (step S506). The procedure so far is the same as in the first embodiment.

Next, the broadcast receiving apparatus 101 evaluates the degree of program duplication of a channel that has not been preset as an out-of-area station (step S507).
Then, the broadcast receiving apparatus 101 preferentially presets a channel having a low degree of program overlap (step S508). Here, the method of evaluating the degree of program redundancy is the same as in the first embodiment.

  As described above, when presetting a channel of an out-of-area station, the broadcast receiving apparatus 101 evaluates the degree of program duplication for all out-of-area stations without determining whether or not there is a conflict in remote control key identification with an in-area station, and Priority is given to channels with lower degrees of priority. In the first embodiment, when the remote control key identification of the channel of the out-of-office station does not conflict, the channel of the same operator (or the same series) as the in-area station may be preset with higher priority than other out-of-office stations. . In the second embodiment, such a situation can be avoided.

(Embodiment 3)
In the third embodiment, after a predetermined channel is preset to the button of the one-touch tuning unit 224 according to the first or second embodiment, when a new channel can be received, the channel is changed to the one-touch tuning unit. It is characterized by presetting to 224 buttons. Other features are the same as those in the first or second embodiment, and thus only the characteristic portions will be described. New channels can now be received because new stations have begun broadcasting new channels, stations that already exist have installed new transmitting stations, and the output of transmitting stations has been increased. It is possible that the channel has already been broadcast, but cannot be received for some reason, and can be received after some change.

FIG. 9 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a new channel.
Here, it is assumed that the buttons of the one-touch tuning unit 224 have been preset (step S601).
Once the preset is performed, the user performs a predetermined operation, so that broadcast receiving apparatus 101 performs frequency scanning (step S602). The predetermined operation may be, for example, selection from a menu, operation of a dedicated button, operation of a power on / off button, operation of energizing a main power supply (commercial power supply), or another operation.

Next, the broadcast receiving apparatus 101 selects, from among the receivable channels, those whose reception state is equal to or higher than a predetermined reference (step S603), and excludes channels including the same broadcast station if they are included (step S604).
Here, it is determined whether or not there is a channel whose reception state has reached a certain reference level or higher (step S605). If there is no new channel, the process ends (step S606).

If there is a new channel, the broadcast receiving apparatus 101 determines whether or not there is an empty button among the buttons of the one-touch tuning unit 224 (step S607).
If there is no empty button among the buttons of the one-touch tuning unit 224, the process ends without doing anything (step S606).
If there is an empty button among the buttons of the one-touch tuning section 224, the program redundancy between the new channel and the preset channel is evaluated (step S608). The method of evaluating the degree of program duplication is the same as in the first embodiment.

The broadcast receiving apparatus 101 presets the empty button by giving priority to the channel evaluated as having a low degree of program redundancy among the plurality of new channels (step S609).
The broadcast receiving apparatus 101 performs this preset as long as there is an empty button.
The broadcast receiving apparatus 101 performs frequency scanning by a predetermined operation to determine whether or not there is a new channel. However, the present invention is not limited to this. For example, the broadcast receiving apparatus 101 can automatically perform a frequency scan at a predetermined cycle, for example, once a day, or once a week, or another cycle, and determine the presence or absence of a new channel.

(Embodiment 4)
Similarly to the third embodiment, when a predetermined channel is preset to the button of the one-touch tuning unit 224 according to the first embodiment or the second embodiment, a new channel can be received. The channel is preset to a button of the one-touch tuning unit 224. Further, at that time, the feature is provided only when there is no empty button to be preset, and the other features are the same as those of the third embodiment. Therefore, only the characteristic portions will be described.

FIG. 10 is a diagram illustrating the operation of the broadcast receiving apparatus 101 when presetting a channel.
The broadcast receiving apparatus 101 executes a preset using the method as in the first embodiment, the second embodiment, or the third embodiment (step S701), and then performs a frequency scan in response to a predetermined operation (step S702). Next, the broadcast receiving apparatus 101 selects, from among the receivable channels, those whose reception state is equal to or higher than a predetermined reference (step S703), and excludes channels that include the same broadcast station (step S704).

Here, it is determined whether or not there is a channel whose reception status has reached a certain reference level or higher (step S705). If there is no new channel, the process ends (step S706).
If there are any new channels whose reception status is higher than a certain reference, presetting of those channels is performed. At this time, it is determined whether or not there is an empty button among the buttons of the one-touch tuning section 224 (step S707). If there is an empty button, the broadcast receiving apparatus 101 presets a new channel to this empty button (step S708). The method of presetting an empty button is the same as in the third embodiment.

If there is no empty button among the buttons of the one-touch tuning unit 224, the broadcast receiving apparatus 101 evaluates the degree of program overlap between the new channel and the preset channel. At the same time, the program duplication degree between the preset channels is evaluated (step S709).
Then, the broadcast receiving apparatus 101 determines whether there is a channel having a lower program overlap degree between the new channel and the preset channel than the preset channel (step S710). ), If not, the process ends without any processing (step S711).

Conversely, if the program overlap between the new channel and the already preset channel is lower than the program overlap between the already preset channels, if there is a channel among the already preset channels, The preset of one of the channels determined to have the highest program redundancy is released (step S712).
The broadcast receiving apparatus 101 presets a new channel whose program duplication degree is determined to be lower than the program duplication degree between the preset channels to a button from which the preset has been canceled (step S713).

The broadcast receiving apparatus 101 repeats the above determination and processing as long as there is a new channel.
(Embodiment 5)
In the fifth embodiment, the method of evaluating the degree of program duplication in the broadcast receiving apparatus 101 is different from that in the first embodiment. Hereinafter, different parts will be described in detail, and description of the same parts as in the first embodiment will be omitted.

FIG. 11 is a diagram illustrating the operation of the broadcast receiving apparatus 101 when presetting a channel.
The broadcast receiving apparatus 101 activates a preset function, and presets a channel of a local station (step S801). Up to here, the operation is the same as that up to step S306 in the first embodiment.

The broadcast receiving apparatus 101 evaluates, for each unregistered channel, the degree to which the broadcast program overlaps with the already registered channel (step S802).
The broadcast receiving apparatus 101 preferentially presets, from among the unregistered channels, those channels that are evaluated to have a low degree of duplication of the broadcast program (step S803). Thereafter, the broadcast receiving device 101 ends the preset function.

The above-described evaluation processing (step S802) and registration processing (step S803) will be described in detail below.
FIG. 12 is a diagram showing a process of evaluating the degree of program duplication.
The broadcast receiving apparatus 101 determines whether there is an unevaluated channel among the unregistered channels (step S811). If there is no unevaluated channel (step S811: N), the broadcast receiving apparatus 101 ends the evaluation processing. If there is an unevaluated channel (step S811: Y), the broadcast receiving apparatus 101 specifies one of the unregistered channels and determines whether or not the registered operator has the same channel among the registered channels. (Step S812). Whether or not the businesses are the same can be determined by the acquired local business operator identification and the regional identification. If the carrier has the same channel (step S812: Y), it is determined whether or not the same prefectural area station exists in the already registered channels (step S813). If there is the same prefectural area station (step S813: Y), the unregistered channel is given a duplication degree “4” (step S814). If there is no channel of the same prefectural station in the registered channels (step S813: N), the broadcast receiving apparatus 101 determines whether there is a channel of the same wide area station in the registered channels (step S815). ). If there is a channel of the same wide area station (step S815: Y), the unregistered channel is given a degree of overlap of "3" (step S816). If there is no channel of the same wide area station (step S815: N), the unregistered channel is given the degree of redundancy "2". (Step S817).

  If the broadcaster 101 does not have the same channel (step S812: N), the broadcast receiving apparatus 101 determines whether there is a channel of the same series (step S818). Whether or not the sequences are the same can be determined by the acquired sequence identification. If there is a channel of the same series (step S818: Y), the unregistered channel is given a degree of duplication "1" (step S819).

If there is no channel of the same series (step S818: N), the broadcast receiving apparatus 101 gives the degree of redundancy “0” to the unregistered channel (step S820). When the broadcast receiving apparatus 101 gives the degree of redundancy to the unregistered channel, the process returns to step S811.
FIG. 13 is a diagram showing a registration process of an unregistered channel.
The broadcast receiving apparatus 101 detects the degree of duplication given to each unregistered channel in the program duplication degree evaluation processing (step S821).

The broadcast receiving apparatus 101 determines whether the number of registered channels is less than the upper limit (step S822). Here, the upper limit is the maximum number that can be registered as a channel to be selected. If the number of registered channels is not less than the upper limit (step S803: N), the broadcast receiving apparatus 101 ends the preset function.
If the number of registered channels is less than the upper limit (step S803: Y), the broadcast receiving apparatus 101 determines whether there is any unregistered channel with a degree of overlap of “0” (step S823).

If there is a channel with a degree of overlap of “0” (step S823: Y), the broadcast receiving apparatus 101 presets the channel (step S824). If there is no channel with the degree of redundancy “0” (step S823: N), the broadcast receiving apparatus 101 determines whether there is a channel with the degree of redundancy “1” among the unregistered channels (step S825).
If there is a channel with the degree of overlap “1” (step S825: Y), the broadcast receiving apparatus 101 presets the channel (step S824). If there is no channel with the degree of redundancy "1" (step S825: N), the broadcast receiving apparatus 101 determines whether there is a channel with the degree of redundancy "2" among the unregistered channels (step S826).

If there is a channel having the degree of overlap of “2” (step S826: Y), the broadcast receiving apparatus 101 presets the channel (step S824). If there is no channel with the degree of redundancy “2” (step S826: N), the broadcast receiving apparatus 101 determines whether there is a channel with the degree of redundancy “3” among the unregistered channels (step S827).
If there is a channel with the degree of overlap of “3” (step S827: Y), the broadcast receiving apparatus 101 presets the channel (step S824). If there is no channel with the degree of redundancy "3" (step S827: N), it is determined whether there is a channel with the degree of redundancy "4" among the unregistered channels (step S828).

If there is a channel with a degree of overlap of “4” (step S828: Y), the broadcast receiving apparatus 101 presets the channel (step S824). If there is no channel with the degree of overlap of “4” (step S828: N), the broadcast receiving apparatus 101 ends the registration processing.
Thereby, the broadcast receiving apparatus 101 presets the channels in the following order.
(1) Different operators and different affiliates (2) Different operators and same affiliates (3) Same operators and outside the same wide area (4) Same operators and within the same wide area (5) Same operators and within the same prefecture area (deformation) Example)
In all the embodiments, the broadcast receiving apparatus 101 evaluates the degree of program duplication for each unregistered channel, and automatically presets a channel based on the evaluation result. As a result, the range of program selection can be expanded without requiring the user. However, the present invention is not limited to this, and the same effect can be obtained even in a specification in which the broadcast receiving apparatus 101 presents the evaluation result of the degree of program redundancy to the user and accepts the preset of the channel from the user. Here, presentation to the user can be performed by outputting a list of evaluation results as data and displaying the list on a display device. Further, a user operation can be received by a remote controller or the like.

  Note that, in all embodiments, the case where each channel is preset to each button of the one-touch tuning unit 224 has been described, but the present invention is not limited to this, and can be applied to a channel list having an upper limit on the number of entries. . The channel list is a list in which information for specifying a channel is associated with each entry number, and is recorded in the memory unit 146 of the broadcast receiving apparatus 101. In the description of the presets so far, one of the services broadcasted in each transport stream is registered in a list having an upper limit on the number of entries. However, when information on all receivable frequencies or transport streams or services is stored in the channel list, the present invention can be applied to a case where the number exceeds the upper limit number of entries. At this time, when deciding which frequency or transport stream or service to retain information in a channel list that cannot retain information about some frequencies or transport streams or services but has an upper limit on the number of entries Alternatively, the determination of the degree of program duplication can be used.

Note that, as in the third embodiment, when a user is already using a broadcast receiving apparatus and a new broadcast can be received and a channel is added, the following may be performed.
(1) The broadcast receiving apparatus always records a user's viewing history (information for specifying a channel and a program).
(2) When a new broadcast can be received, the broadcast receiving device checks a broadcast program of the channel by using an EPG or the like.
(3) The broadcast receiving apparatus checks the program duplication degree for each channel based on the viewing history.
(4) If the proportion of the new channel and the existing channel A that the program overlaps is high, it can be determined that the broadcast contents are almost the same, so that it is determined that the program overlap degree of the new channel and the channel A is high.
(5) If there is no program that matches the viewing history, the above determination is not used, and the degree of program duplication is determined based on information such as the company and the series.

Thus, when a new broadcast station can be received, the preset can be changed according to the user's preference.
When canceling a preset channel as in the fourth embodiment, the cancellation may be performed in consideration of the viewing history.
For example, when it is necessary to release one of two preset channels, a channel with a viewing history remains, and a channel without a viewing history is released.

Thus, the preset can be changed according to the user's preference.
Further, the change of the preset in consideration of the viewing history may be performed as follows in order to further match the preference of the user.
(1) The broadcast receiving apparatus also records genre information indicating a genre of a program as a viewing history.
(2) When evaluating the degree of program overlap, the broadcast receiving apparatus compares a program in the viewing history and its genre with a program in a new channel and its genre.
(3) The broadcast receiving apparatus evaluates a channel having a high degree of matching the genre and a low degree of matching of the program duplication itself as a high priority.

For example, if there are two new channels and both have the same program duplication degree, the channel with the highest degree of genre matching is preferentially preset.
Thus, the preset can be changed in consideration of the user's preference.

  As described above, the present invention can be applied to the preset function of the digital terrestrial broadcast receiver.

FIG. 3 is a diagram illustrating an installation environment of a broadcast receiving device. FIG. 2 is a diagram illustrating a configuration of a main part of the broadcast receiving apparatus 101. FIG. 3 is a diagram showing a specific example of an operation surface of a remote controller 160. FIG. 9 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a channel. It is a figure which shows the detail of the preset method which considered the degree of program duplication. It is a figure which shows the detail of the preset method which considered the degree of program duplication. FIG. 4 is a diagram showing a specific example of a preset. FIG. 9 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a channel. FIG. 9 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a channel. FIG. 9 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a channel. FIG. 9 is a diagram illustrating an operation of the broadcast receiving apparatus 101 when presetting a channel. It is a figure which shows the evaluation process of a program duplication degree. FIG. 11 is a diagram illustrating a registration process of an unregistered channel.

Explanation of reference numerals

Reference Signs List 101 broadcast receiving apparatus 110 main body section 118 signal bus 121 reception antenna section 124 frequency tuning section 126 demodulation section 128 separation section 132 audio decoder 134 video decoder 136 data decoder 144 main body control section 146 memory section 160 remote control section 164 remote control control section 166 operation input Unit 221 communication unit 224 one-touch tuning unit 226 direct tuning unit 227 channel up 228 channel down

Claims (10)

A terrestrial digital broadcast receiving apparatus for registering a plurality of channels to be tuned within a predetermined number,
An evaluation means for evaluating, for each of the unregistered channels, the degree of overlap of the broadcast program with the already registered channels;
Registering means for registering preferentially from a channel evaluated as having a low degree of duplication by the evaluation means. The evaluation means,
Acquisition means for acquiring, for each of the plurality of channels, carrier identification information for identifying a carrier broadcasting the channel,
If the channels that have the same carrier identification information are included in the already registered channels, it is determined that the degree of duplication of the broadcast program is high; otherwise, it is determined that the degree of duplication of the broadcast program is low. The terrestrial digital broadcast receiving apparatus according to claim 1, comprising: The evaluation means,
Acquisition means for acquiring, for each of a plurality of channels, sequence identification information for identifying a sequence of a business operator broadcasting the channel,
Determining means for determining that the degree of duplication of a broadcast program is high if a channel having the same sequence identification information is included in the already registered channels; otherwise, determining that the degree of duplication of the broadcast program is low The terrestrial digital broadcast receiving apparatus according to claim 1, comprising: The terrestrial digital broadcast receiving device stores broadcast area identification information for identifying a plurality of broadcast areas, respectively, in a plurality of groups,
The evaluation means,
Acquisition means for acquiring broadcast area identification information for each of the plurality of channels, which identifies an area to be broadcast by a carrier of the channel,
If the channels of the broadcast area identification information belonging to the same group are included in the already registered channels, it is determined that the degree of duplication of the broadcast program is high; otherwise, it is determined that the degree of duplication of the broadcast program is low. The terrestrial digital broadcast receiving apparatus according to claim 1, further comprising: The evaluation means,
Recording means for recording a broadcast program watched by the user;
Acquiring means for acquiring a broadcast program table of each of the plurality of channels;
If the broadcast program table contains the same broadcast program as the already viewed broadcast program, it is determined that the degree of duplication of the broadcast program is high, otherwise it is determined that the degree of duplication of the broadcast program is low. The digital terrestrial broadcast receiver according to claim 1, further comprising: a determination unit. The evaluation means,
Recording means for recording the genre of the broadcast program watched by the user;
Acquiring means for acquiring information indicating a genre of each broadcast program in each of the plurality of channels;
If the information acquired by the acquiring means includes the same genre as the genre of the broadcast program already viewed, it is determined that the priority of registering the channel is high, otherwise, the priority of registering the channel is high. The terrestrial digital broadcast receiving apparatus according to claim 1, further comprising: determining means for determining that the degree is low. The terrestrial digital broadcast receiving device,
In the case where the same number of channels as the upper limit have already been registered, in addition to the channels between the unregistered channels and the already registered channels, the degree of overlap of the broadcast program among a plurality of already registered channels. If the degree of duplication of the broadcast program is higher than that of any of the unregistered channels in the already registered channels, there is provided a deletion means for deleting the registration of the already registered channels. The terrestrial digital broadcast receiving apparatus according to claim 1. A terrestrial digital broadcast receiving apparatus for registering a plurality of channels to be tuned within a predetermined number,
An evaluation means for evaluating, for each of the unregistered channels, the degree of overlap of the broadcast program with the already registered channels;
Presentation means for presenting to a user the degree of duplication of the broadcast programs evaluated by the evaluation means. In the terrestrial digital broadcast receiving apparatus, a program for registering a plurality of channels to be tuned within a predetermined number,
An evaluation step of evaluating, for each of the unregistered channels, the degree of overlap of the broadcast program with the already registered channels;
A registration step of preferentially registering from a channel evaluated as having a low degree of duplication in the evaluation step. In the terrestrial digital broadcast receiver, a channel registration method for registering a plurality of channels to be selected within a predetermined number,
An evaluation step of evaluating, for each of the unregistered channels, the degree of overlap of the broadcast program with the already registered channels;
A registration step of preferentially registering from a channel evaluated as having a low degree of duplication in the evaluation step.

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