JP2010130452A - Digital broadcast receiving apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiving apparatus capable of switching a channel search method according to the type of a broadcast station under reception, when a receivable broadcast station changes. <P>SOLUTION: The digital broadcast receiving apparatus is equipped with: a broadcast reception portion; and a search portion for searching a channel which is presumed to belong to the same business group as a channel tuned by the broadcast reception portion. The digital broadcast receiving apparatus is also equipped with a search control section controlling a search range of the search portion. The search control section classifies the type of the channel based on the business group to which each channel belongs. Then, the search portion determines the search range at the time of carrying out a channel search according to the type. If the business group is the same even if the channel is different, the search range is widened with respect to the channel with a high probability of broadcasting the same program and search is performed spending enough time. Inversely, with respect to the channel with a low possibility, the search range is narrowed, and search is ended soon. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiver, and more particularly to a digital broadcast receiver capable of switching a broadcast wave reception method according to a reception situation.

  In recent years, terrestrial digital broadcasting exists as one of digital broadcasting. In Japan, the current terrestrial analog broadcasting is scheduled to end in 2011, and a transition to terrestrial digital broadcasting is underway. Along with this, mobile digital broadcast receivers mounted on car navigation systems and mobile phones have been widely developed.

  However, there is a possibility that the radio wave state of the digital broadcast receiving apparatus for a moving body always changes. For example, in the case of a vehicle-mounted digital broadcast receiver, the reception state changes every moment depending on the position, speed, etc. of the vehicle during traveling.

  For example, when moving from A prefecture to B prefecture, it becomes difficult to receive broadcast waves directed to A prefecture as it approaches the border of the prefecture, and reception of broadcast waves directed to B prefecture becomes possible. The position where the reception state is switched is generally near the prefectural border, but there may be a case where the broadcast can be received across the prefectural border. Conversely, it may be difficult to receive broadcast waves from A prefecture before crossing the prefectural border, and broadcast waves from B prefecture may be received.

  In this case, it is necessary to switch the setting (hereinafter referred to as “channel setting”) related to the channel (= broadcast station) when reception becomes difficult or reception becomes impossible. As one of channel setting switching methods, a method of searching for the same affiliated station of a broadcasting station that has become unreceivable has been conventionally known. For example, in the case of digital terrestrial broadcasting, the sequence is determined using an affiliation ID that is sequence identification information included in the broadcast wave.

  Specifically, the TS output from the digital tuner that demodulates the received broadcast wave is monitored, and a BIT (Broadcaster Information Table) that is one of SI (Service Information) included in the TS is referred to. Then, the sequence is discriminated based on the value of the affiliation ID which is one of the information described in the BIT.

  For example, if the affiliation ID is 0 or 1, it is regarded as an NHK (Nippon Hoso Kyokai) broadcasting station (NHK General, NHK Education, etc.). When the affiliation ID is 2 to 6, it is regarded as a private broadcasting station that constructs a network of key stations and net stations. In case of 7 or more, it is regarded as an independent UHF broadcasting station.

When searching for the same affiliated station using such an affiliation ID, three methods are conventionally known.
(A) A method of searching for the same affiliated station from the channel list of the current prefecture (hereinafter referred to as “first channel list”).
(B) A method of searching for the same affiliated station from a channel list of other prefectures including broadcast stations estimated to be receivable (hereinafter referred to as “second channel list”).
(C) A method of searching for the same affiliated station by scanning all physical channels (13ch to 62ch in the case of terrestrial digital broadcasting).

  However, in the method (a), the probability that the same affiliated station exists is lower than in other methods. Further, in the method (b), there is a possibility that a channel (for example, a channel in a prefecture adjacent to the neighboring prefecture) may be generated at the prefectural border such as a fringe area even though reception is actually possible. . In the method (c), it takes time to scan all physical channels.

In relation to the above, Patent Document 1 discloses a digital broadcast receiving apparatus that can prevent frequent re-tuning operation, maintain a suitable reception state, and select a channel with a suitable reception level. ing.
JP 2007-312110 A

  According to the digital broadcast receiving apparatus of Patent Document 1, automatic tuning is performed without requiring user operation when the reception state deteriorates. However, even if a conventional digital broadcast receiving apparatus such as the digital broadcast receiving apparatus of Patent Document 1 can select a channel with a suitable reception level, the channel has been viewed by the user until then. The same program is not always broadcast.

  In particular, for independent UHF broadcasting stations, there is a high level of regional adhesion, and there is a low possibility that there are channels that broadcast the same program in neighboring prefectures. In addition, private broadcast stations other than independent UHF broadcast stations are unlikely to broadcast the same program on the same affiliated station, except during the golden time period. On the other hand, NHK broadcasting stations have some programs that differ from region to region, but most of them broadcast the same program if they are the same affiliated station.

  From the above, even if the channel search is performed and the channel is re-selected, the possibility that the same program can be received differs depending on the type of sequence to which the channel belongs. Normally, during a channel search, the user cannot watch the program and has no choice but to wait until completion. The longer the search time, the longer the user wait time.

  From the viewpoint of the user, if there is a high possibility that the same program can be received by the channel search, the allowable waiting time is usually long. On the other hand, when the possibility is low, it is estimated that manual channel setting is preferable to waiting for search completion. For this reason, channel search takes a relatively long time if the channel is likely to be able to watch the same program, and if the channel is less likely, the search time is shortened. It is desirable to leave the judgment to the user.

  The present invention has been made in view of the above problems, and its purpose is to set a channel according to the type of a channel sequence being received when a receivable channel changes due to movement across prefectures or the like. It is an object of the present invention to provide a digital broadcast receiving apparatus capable of efficiently performing the above.

  In order to achieve the above object, a digital broadcast receiving apparatus of the present invention includes a broadcast receiving unit that selects and receives broadcast waves, and a channel that is estimated to have the same channel as the channel selected by the broadcast receiving unit. And a search unit for giving a channel selection instruction to the broadcast receiving unit based on the search result, a channel is classified into a plurality of types based on sequence identification information included in the broadcast wave, and the broadcast receiving unit A search control unit that determines which type the selected channel belongs to and controls a search range of the search unit based on a result of the determination;

  According to this configuration, the digital broadcast receiving apparatus of the present invention includes a broadcast receiving unit and a search unit that searches for a channel estimated to have the same sequence as the channel selected by the broadcast receiving unit. A search control unit for controlling the search range of the search unit is also provided. The search control unit performs channel type classification based on the series to which each channel belongs. Then, according to the type, the search range for the channel search by the search unit is determined. As a result, if the channel is different even if the channel is the same, the channel having a high probability of broadcasting the same program can be expanded so that the search can be performed over a long time. Conversely, for a channel with a low possibility, the search range can be narrowed and the search can be terminated early. For this reason, a user's waiting time can be reduced efficiently.

  In order to achieve the above object, the digital broadcast receiving apparatus of the present invention monitors the electric field strength of the broadcast wave of the channel selected by the broadcast receiving unit, and determines whether the electric field strength is below a threshold value. A reception state determination unit that performs the search and the channel selection instruction when the reception state determination unit detects that the electric field strength is below a threshold value.

  According to this configuration, the digital broadcast receiving apparatus of the present invention includes the reception state determination unit that monitors the electric field strength of the broadcast wave of the channel selected by the broadcast reception unit. When the electric field strength falls below the threshold value and reception becomes impossible, the search unit searches for a channel of the same series as the reception-impossible channel.

  In order to achieve the above object, in the digital broadcast receiving apparatus of the present invention, the search control unit classifies channels into the first type, the second type, and the third type as the type, and the broadcast receiving unit When the selected channel belongs to the first type, the search unit is configured to search for a channel included in a first channel list indicating channels that can be selected in an area where the digital broadcast receiving apparatus is located. To control.

  According to this configuration, the search control unit classifies the channels into the first type to the third type according to the series. When the search unit searches for a channel of the same series as the first type channel, the search unit is controlled so that only channels included in the first channel list are searched. The first channel list corresponds to, for example, a channel list of a prefecture area (= area) where the digital broadcast receiving apparatus is located. By limiting the search target in this way, the waiting time of the user can be reduced.

  In order to achieve the above object, the digital broadcast receiving apparatus according to the present invention is configured so that the search control unit, when the channel selected by the broadcast receiving unit belongs to the second type, The search unit is controlled to search for channels included in a second channel list indicating channels that can be selected in an adjacent area of the area where the digital broadcast receiving apparatus is located.

  According to this configuration, when the search unit searches for a channel of the same series as the second type channel, the search control unit first controls the search unit to search for a channel included in the first channel list. . If the search fails, control is performed so that the channels included in the second channel list are to be searched. Note that the second channel list corresponds to, for example, a channel list of a prefectural area adjacent to a prefectural area where the digital broadcast receiver is located. Thus, by limiting the search target in stages, the waiting time of the user can be efficiently reduced.

  In order to achieve the above object, the digital broadcast receiving apparatus according to the present invention is configured so that the search control unit includes the first channel list and the channel selected by the broadcast receiving unit when the channel belongs to the third type. The search unit controls the search unit to search for channels included in the second channel list, and sets all searchable channels to be searched when the search unit fails to search. To control.

  According to this configuration, when the search unit searches for a channel of the same series as the third type channel, the search control unit first searches for the channels included in the first channel list and the second channel list. If the search fails, all channels, for example, the physical channels 13ch to 62ch of the UHF channel in the case of terrestrial digital broadcasting, are searched. Thus, by limiting the search target in stages, the waiting time of the user can be efficiently reduced.

  In order to achieve the above object, a digital broadcast receiving apparatus of the present invention includes a GPS (Global Positioning System) device, and the search control unit determines an area where the digital broadcast receiving device is located by the GPS device. The contents of the first channel list and the second channel list are determined based on the determination result.

  According to this configuration, the digital broadcast receiving apparatus of the present invention includes the GPS device. A search control part discriminate | determines the present location of a digital broadcast receiver, and the prefectural area where a present location is contained by a GPS apparatus. Then, based on the determination result, a first channel list and a second channel list are generated.

  According to the present invention, when a predetermined channel cannot be received due to movement of the digital broadcast receiving apparatus, a channel of the same series as that channel is searched. At this time, if the channel is highly likely to be able to receive the same program in the same series, the search range is expanded, and if the channel is less likely, the search range is narrowed. Thereby, the waiting time of the user at the time of search can be reduced efficiently.

Embodiments of the present invention will be described below with reference to the drawings. In addition, embodiment shown here is an example and this invention is not limited to embodiment shown here.
<1. Internal configuration>
FIG. 1 is a block diagram showing an internal configuration of a vehicle-mounted television 100 (= digital broadcast receiver) according to an embodiment of the present invention. As shown in the block diagram of FIG. 1, the in-vehicle television 100 of the present invention includes at least a control unit 11, an OSD (On Screen Display) processing unit 12, a recording unit 13, an input unit 14, and an LCD (Liquid Crystal Display) 15. , Display control unit 16, speaker 17, GPS (Global Positioning System) antenna 18 (= GPS device), positioning navigation device 19 (= GPS device), digital antenna 21 (= broadcast receiving unit), digital tuner 22 (= broadcast receiving) Section) and a digital broadcast processing section 23 (= broadcast receiving section).

  The control unit 11 organically controls driving of each member of the in-vehicle television 100, and performs overall control of broadcast reception processing and the like. In addition, the control unit 11 includes a reception state determination unit 11a to a search control unit 11c as functional units realized by executing a predetermined program on the arithmetic processing device provided in the control unit 11. Details of processing performed by each functional unit will be described later.

  The OSD processing unit 12 draws an image for EPG (Electronic Program Guide) and images for various setting screens. The image drawn by the OSD processing unit 12 is given to the display control unit 16 and displayed on the LCD 15. Various image data and character data used for drawing by the OSD processing unit 12 are recorded in the recording unit 13 in advance. Alternatively, data included in a digital broadcast wave received by the digital antenna 21 can be used.

  The recording unit 13 is a medium for recording various data, and has a plurality of recording units for each type of data to be recorded. In the example shown in FIG. 1, the recording unit 13 includes at least an application recording unit 13a and a channel information recording unit 13b.

  The application recording unit 13a is a recording unit for recording various programs (for example, a reception control program) executed in the in-vehicle television 100. The channel information recording unit 13b is a recording unit that records a channel list for each prefecture area, a first channel list corresponding to the current prefecture area, a second channel list corresponding to the adjacent prefecture area, and the like.

  The input unit 14 is an input interface for a user to issue a channel selection instruction, a channel setting instruction, or the like to the in-vehicle television 100. The input unit 14 is configured to include, for example, a plurality of push buttons, touch sensors, and the like. Alternatively, a touch panel type integrated with the LCD 15 may be used.

  The LCD 15 is a display device that displays various types of information held by the in-vehicle television 100, such as an EPG image and a television broadcast reception image. The display control unit 16 encodes the image data into a signal that matches the signal format of the LCD 15, performs D / A conversion, and outputs an image signal. The image signal output from the display control unit 16 is sent to the LCD 15 and displayed as an image.

  The speaker 17 is a loudspeaker for outputting a sound based on an analog sound signal obtained by a sound processing unit (not shown) decoding sound data and performing D / A conversion. As audio data to be used, audio data decoded by the digital broadcast processing unit 23, audio data recorded in advance in the recording unit 13, or the like is used.

  The GPS antenna 18 is a receiver for receiving a specific radio wave (for example, an L1 radio wave of 1.575 GHz) emitted from the GPS satellite 62. The GPS antenna 18 can receive position information from a plurality of GPS satellites 62. The positioning navigation device 19 is a positioning navigation device that decodes a signal received by the GPS antenna 18 to generate latitude and longitude information and includes a navigation device using a gyro or the like.

  The digital antenna 21 is an antenna for receiving digital broadcasts, and for example, a plurality of diversity antennas are used. The digital tuner 22 is for selecting and demodulating broadcast waves received by the digital antenna 21 and outputting a TS (Transport Stream).

The digital broadcast processing unit 23 separates and decodes image data, audio data, broadcast information data, and the like from the TS output from the digital tuner 22. Various data obtained by decoding are sent to the display control unit 16 and the speaker 17 described above.
<2. Channel setting screen>
Here, screens related to channel setting according to an embodiment of the present invention will be described with reference to the screen diagrams of FIGS.

  FIG. 2 shows a digital menu screen 50 for the user to make various settings for the in-vehicle television 100. The calling of the digital menu screen 50 can be performed when the user presses a menu button or the like included in the input unit 14, for example. When the “prefectural area change” button 51 is pressed on the digital menu screen 50, the prefectural area change screen 60 of FIG. 3 is displayed. The prefectural area change screen 60 can set a receiving prefectural area. For example, when the “Osaka” button is pressed, Osaka prefecture is set as the receiving prefecture area.

  Next, when the user returns to the digital menu screen 50 in FIG. 2 and presses the “channel scan” button 52, the channel scan screen 70 in FIG. 4 is displayed. In this screen, a list of channels that can be received in the reception prefecture area set in the prefecture area change screen 60 (Osaka Prefecture in the above example) is displayed.

  The user can register the displayed channel list as the first channel list by pressing a “register” button 71 included in the channel scan screen 70. The registration result is recorded in the channel information recording unit 13b. At the same time, a list of channels that can be received in the prefecture area adjacent to the set reception prefecture area (in the above example, Hyogo prefecture, Nara prefecture, etc. adjacent to Osaka prefecture) is registered as the second channel list.

In addition, the registration of the first channel list and the second channel list can be automatically performed using the positioning navigation device 19 in addition to the manual setting by the user operation described above. For example, the control unit 11 acquires the current position of the vehicle-mounted television 100 using the positioning navigation device 19 and determines a prefecture area (for example, Osaka prefecture) corresponding to the current position. And the form which registers a 1st channel list and a 2nd channel list by setting the discriminate | determined prefecture area as said receiving prefecture area.
<3. Channel setting change processing>
Here, channel setting change processing according to an embodiment of the present invention will be described with reference to the flowchart of FIG.

  The flow shown in FIG. 5 is started when digital broadcast reception by the digital broadcast processing unit 23 is started.

  After the start of this process, the search control unit 11c determines the channel being received in step S110. Then, the affiliation ID (= sequence identification information) of the corresponding channel is acquired from the BIT.

  Next, in step S120, the reception state determination unit 11a determines whether or not the radio wave from the receiving broadcasting station has become unreceivable, such as by crossing the prefecture. Specifically, for example, when the electric field intensity of the broadcast wave from the broadcast station selected by the digital tuner 22 falls below a predetermined threshold, it is considered that reception is impossible.

  If it has been normally received, the process proceeds to step S120 again and monitoring is continued. When reception is disabled, the search control unit 11c determines the type of the channel being received by referring to the affiliation ID acquired in step S110 in step S130. Specifically, for example, when the affiliation ID is 0 or 1, it is type 3 (= third type), when it is 2 to 6, type 2 (= second type), when it is 7 or more, type 1 (= first) One type).

  Next, in step S140, the search control unit 11c creates a candidate list (= search range) indicating a physical channel list to be searched by a method according to the determined type. First, the search control unit 11c uses the positioning navigation device 19 to acquire a prefecture area (hereinafter referred to as “current prefecture area”) where the in-vehicle television 100 is located.

  In the case of type 1, a candidate list is created from physical channels included in the channel list (= first channel list) corresponding to the current prefecture area. In the case of Type 2 and Type 3, a candidate list is created from physical channels included in the first channel list and the channel list (= second channel list) corresponding to the prefectural area adjacent to the current prefectural area.

  In addition, the information which shows the adjacent prefecture area for every prefecture area shall be produced previously, and shall be recorded on the channel information recording part 13b. When creating a candidate list, the search order of physical channels included in the first channel list is higher in the candidate list, and the search order of physical channels included in the second channel list is lower in the candidate list. Create a candidate list.

  Next, in step S150, the search control unit 11c extracts one physical channel included in the candidate list and instructs the search unit 11b to try reception using the physical channel. Based on the reception result, the process branches in step S160.

  As a result of the trial, if the channel having the same affiliation ID as the affiliation ID acquired in step S110 is successfully received, the process proceeds to step S210 described later. If reception has failed, the search control unit 11c determines in step S170 whether there is an unchecked physical channel in the candidate list.

  If there is an unchecked physical channel, in step S175, the search control unit 11c extracts one physical channel from the unchecked physical channels included in the candidate list and performs a search so as to try reception by the physical channel. To the unit 11b. After the instruction, the process proceeds to step S160.

  If there is no unchecked physical channel in step S170, the search control unit 11c determines in step S180 whether or not the type determined in step S130 is type 3. If it is not type 3, it is considered that the channel search has failed, and this processing is terminated. In the case of type 3, in step S190, the search control unit 11c instructs the search unit 11b to search all physical channels, for example, 13ch to 62ch in the case of terrestrial digital broadcasting. Based on the search result, the process branches in step S200.

  As a result of the search, if the channel having the same affiliation ID as the affiliation ID acquired in step S110 has not been successfully received, this process ends. If the search is successful, the search control unit 11c sets the corresponding physical channel as a reception channel in step S210, and then ends this process.

  According to the present embodiment described above, when the search unit 11b performs a channel search, the search range is determined according to the type of the channel that cannot be received, and the search process is controlled. For this reason, for example, a broadcasting station with a high probability of viewing the same program if there are channels of the same series all over the country, such as NHK broadcasting stations, performs a search over time.

Conversely, channels such as independent UHF stations that have a low probability of viewing the same program when the prefectural area changes will shorten the search time as much as possible and make the transition to a state waiting for instructions from the user as soon as possible. Thus, by performing a search according to the channel sequence type, the waiting time of the user can be efficiently reduced.
[Other embodiments]
The present invention has been described with reference to the preferred embodiments and examples. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea. be able to.

  Therefore, the present invention can also be applied to the following embodiments.

  (A) In the above embodiment, the in-vehicle television 100 is described as an example of the digital broadcast receiving apparatus that performs the channel setting process of the present invention, but the embodiment may be implemented in other digital broadcast receiving apparatuses. For example, the embodiment may be implemented with a portable television, a digital radio, a mobile phone, or the like.

  (B) In the above embodiment, each functional unit of the in-vehicle television 100 related to various processes of the present invention is realized by executing a program on an arithmetic processing unit such as a microprocessor. It may be realized by a plurality of circuits.

  (C) In the above embodiment, the digital broadcast receiving device and the GPS device are described as an example in which they are housed in the same housing, but they are not necessarily in the same housing. For example, a configuration may be adopted in which the communication unit is provided with each other, and an image / sound signal or data transfer is performed via the communication unit to perform the same operation as described above.

  (D) In the above embodiment, as a specific example of channel type classification, a method of classifying into three types of types 1 to 3 has been described as an example, but a method of performing classification by other types may be used. For example, the NHK broadcast station may be type 1, all other broadcast stations may be type 2, and for type 2, only the physical channels included in the first channel list may be search candidates.

  (E) In the above embodiment, in step S120, the process is branched depending on whether or not the broadcast being received cannot be received. However, the process may be branched depending on other conditions. For example, the above-described processing branch may be performed depending on whether or not a seek channel selection instruction by a user operation is detected. Thus, the present invention can be applied even when a channel search is performed at the time of seek channel selection.

  (F) In the above embodiment, in step S160, branching is performed depending on whether or not radio wave reception from a broadcasting station with the same affiliation ID is successful. Only when the same program is received, the mode may be shifted to step S210. Whether or not the program is the same program is determined by comparing contents such as EIT (Event Information Table) included in the digital broadcast signal, for example.

  (G) In the said embodiment, although GPS is used as a means for specifying the present prefecture area in order to create a 1st channel list, the form which specifies the present prefecture area by methods other than this may be sufficient. For example, the present prefecture area may be specified based on an area code described in an NIT (Network Information Table) descriptor included in the broadcast wave. Or the form which specifies a present prefecture area by accepting operation which inputs the present prefecture area from a user may be sufficient.

  (H) In the above embodiment, an example is described in which the channel list is created in units of prefectures, but the channel list is created in units other than this, for example, municipalities or local units (Kinki, Shikoku, etc.). It may be a form.

It is a block diagram which shows the internal structure of the digital broadcast receiver which concerns on one Embodiment of this invention. It is a screen figure which shows the menu screen which concerns on one Embodiment of this invention. It is a screen figure which shows the prefecture area change screen which concerns on one Embodiment of this invention. It is a screen figure which shows the channel scan screen which concerns on one Embodiment of this invention. It is a flowchart which shows the channel setting change process which concerns on one Embodiment of this invention.

Explanation of symbols

100 In-vehicle TV (digital broadcast receiver)
DESCRIPTION OF SYMBOLS 11 Control part 11a Reception state determination part 11b Search part 11c Search control part 12 OSD process part 13 Recording part 14 Input part 15 LCD
18 GPS antenna (GPS device)
19 Positioning navigation device (GPS device)
21 Digital antenna (broadcast receiver)
22 Digital tuner (broadcast receiver)
23 Digital broadcast processing unit (broadcast receiving unit)

Claims (6)

A broadcast receiver for selecting and receiving broadcast waves;
A search unit that searches for a channel that is estimated to be the same as the channel selected by the broadcast reception unit, and that provides a channel selection instruction to the broadcast reception unit based on the search result;
Based on the sequence identification information included in the broadcast wave, the channel is classified into a plurality of types, the channel selected by the broadcast receiving unit is determined to belong to which type, based on the determination result, A digital broadcast receiving apparatus comprising: a search control unit that controls a search range of the search unit. Monitoring the electric field strength of the broadcast wave of the channel selected by the broadcast receiving unit, comprising a reception state determining unit for determining whether the electric field strength is below a threshold,
The search unit performs the search and the channel selection instruction when the reception state determination unit detects that the electric field strength is below a threshold value.
The digital broadcast receiver according to claim 1. When the search control unit classifies the channel into the first type, the second type, and the third type as the type, and the channel selected by the broadcast receiving unit belongs to the first type, the digital broadcast Controlling the search unit to search for channels included in the first channel list indicating channels that can be selected in the area where the receiving device is located;
The digital broadcast receiver according to claim 1 or 2. When the channel selected by the broadcast receiving unit belongs to the second type, the search control unit can select a channel in the first channel list and an adjacent region where the digital broadcast receiving device is located. Controlling the search unit to search for a channel included in a second channel list indicating a channel;
The digital broadcast receiver according to claim 3. The search control unit may search the channels included in the first channel list and the second channel list when the channel selected by the broadcast receiving unit belongs to the third type. And controlling the search unit to search all channels that can be searched when the search unit fails to search,
The digital broadcast receiver according to claim 3. Equipped with GPS (Global Positioning System) device,
The search control unit determines an area where the digital broadcast receiving device is located by the GPS device, and determines the contents of the first channel list and the second channel list based on the determination result.
The digital broadcast receiver according to claim 3.

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