JP2018164201A - Digital broadcast receiver and list display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital broadcast receiver and a list display method, suitable for displaying a list of broadcast services that are likely to be received.SOLUTION: A digital broadcast receiver 100 includes: a storage unit 140 to store positional information and identification information in association with one another for each of a plurality of broadcast facilities that broadcast broadcasting services; a specification unit to specify a broadcast facility broadcasting a broadcasting service being received on the basis of the identification information; an acquisition unit to acquire a distance between a specified broadcast facility and each of other broadcast facilities stored in the storage unit on the basis of positional information of each of the broadcast facilities; a holding unit to hold a list 112 of a broadcasting service broadcast by each of the plurality of broadcast facilities; a rearrangement unit to rearrange broadcasting services in the list on the basis of a distance with each broadcast facility having been acquired by the acquisition unit; and a display unit 120 to display a list where the broadcasting services are rearranged.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a digital broadcast receiver and a list display method.

  It is common to digitally encode audio and video in audio equipment and video equipment. The trend of digital encoding of audio and video in such audio equipment has spread to the field of radio broadcasting, and several types of digital radio broadcasting have been standardized and put into practical use. For example, DAB (Digital Audio Broadcast) is known.

  DAB is a digital audio broadcasting standard standardized in the project 147 of EUREKA (European Research Coordination Agency), which is broadcast practically or experimentally broadcast around the world. DAB employs OFDM (Orthogonal Frequency Division Multiplex) as a transmission method, and employs MPEG Audio Layer 2 and MPEG4 HE-AAC v2 for audio encoding.

  In the DAB transmission format, a plurality of services (voice service or data service) and service configuration information are multiplexed in one frequency block (ensemble) of about 1.5 MHz band. A service always includes one primary service component, and optionally includes up to 11 secondary service components.

  An ensemble, a service, and a service component are set with identifiers of EID (Ensemble Identifier), SID (Service Identifier), and SCIdS (Service Component Identifier within the Service), respectively. However, these identifiers are only a list of alphabets and numbers. For this reason, it is difficult for the user to directly identify the service or the like from the identifier.

  Therefore, although optional, labels are set for the ensemble, service, and service component. For example, broadcast station names are attached to service labels and service component labels.

  The DAB receiver holds a station list that lists service labels and service component labels. The station list is created based on ensemble information detected when a DAB receiver seeks all frequency bands and seeks, for example. The user can view a desired service component by selecting one label from the labels arranged in the station list.

  For example, Patent Document 1 describes a specific configuration of a DAB receiver. The DAB receiver described in Patent Document 1 acquires the current position (latitude / longitude) of the host vehicle from the navigation system, and searches for the ID symbol of the area including the current position from the area definition information data stored in the memory. To do. When the ID symbol of the area including the current position is found, the DAB receiver searches the memory for information related to the service broadcast in the found area. The DAB receiver displays information related to the searched service (for example, EID, ID symbol of ensemble frequency) in a list format on the display screen of the display device. This list shows a list of services that the DAB receiver can currently receive. When a desired service is selected from the list by the user, the DAB receiver receives the selected service.

Japanese Patent No. 3979731

  With the DAB receiver described in Patent Document 1, it is possible to obtain a list of receivable services without executing seek processing. However, in order to obtain a list of receivable services, it is necessary to obtain the current position from the navigation system. In other words, the DAB receiver described in Patent Document 1 cannot obtain a list of receivable services unless it cooperates with the navigation system.

  When the DAB receiver described in Patent Document 1 is not linked to the navigation system, for example, it may be possible to display the labels of services and service components included in an ensemble with a reception history in a list format. However, in this case, it is pointed out that not only the labels of receivable services and service components but also the labels of services and service components included in an ensemble that is highly likely to be unreceivable are displayed.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a digital broadcast receiver and a list display method suitable for displaying a list of broadcast services that are highly likely to be received. It is.

  A digital broadcast receiver according to an embodiment of the present invention includes a storage unit that stores location information and identification information in association with each other for each of a plurality of broadcast facilities that broadcast a broadcast service, and a broadcast that broadcasts a broadcast service that is being received. An acquisition unit that specifies a facility based on identification information, and a distance between each of the specified broadcast facility and each of the other broadcast facilities stored in the storage unit based on position information of each broadcast facility; A holding unit that holds a list of broadcast services broadcast by each of a plurality of broadcast facilities, and a rearrangement unit that rearranges the broadcast services in the list based on the distance between each broadcast facility acquired by the acquisition unit; And a display unit for displaying a list in which broadcast services are rearranged.

  Further, in one embodiment of the present invention, the rearrangement unit may be configured such that broadcast services that are broadcast at a broadcast facility that is closer to the broadcast facility that broadcasts the broadcast service being received are arranged higher.

  In one embodiment of the present invention, the rearrangement unit may arrange the receiving broadcast service in a higher rank than the broadcast service broadcast by each of the other broadcast facilities.

  In one embodiment of the present invention, the reordering unit displays a list of broadcast services broadcasted by a broadcast facility whose distance from the broadcast facility that broadcasts the broadcast service being received is a specified value or more. It is good also as a structure which performs a filter process so that it may not be performed.

  The broadcast service includes, for example, a broadcast service that is broadcast in a wide area and a broadcast service that is broadcast in a narrow area narrower than the wide area. In one embodiment of the present invention, the rearrangement unit may arrange broadcast services broadcast in a wide area in a higher rank than broadcast services broadcast in a narrow area.

  In addition, a digital broadcast receiver according to an embodiment of the present invention broadcasts a broadcast service being received, a storage unit that associates and stores position information and identification information for each of a plurality of broadcast facilities that broadcast the broadcast service. Ease of receiving broadcast services broadcast on each of the other broadcast facilities stored in the storage unit, starting from the specified broadcast facility based on the identification information and the location of the specified broadcast facility An evaluation unit that evaluates the broadcast, a holding unit that holds a list of broadcast services broadcast by each of the plurality of broadcasting facilities, and broadcasts in the list based on the ease of reception of each broadcast service evaluated by the evaluation unit A rearrangement unit that rearranges services and a display unit that displays a list in which broadcast services are rearranged.

In one embodiment of the present invention, the evaluation unit includes at least one of the following parameters (1) to (3):
(1) The distance between the broadcast facility that broadcasts the broadcast service being received and each of the other broadcast facilities stored in the storage unit,
(2) Broadcast output from broadcasting facilities,
(3) Area of broadcast service broadcast area,
It is good also as a structure which calculates the evaluation value which shows the ease of reception of a broadcast service based on this. In this case, the rearrangement unit arranges the broadcast services in the list in descending order of evaluation value.

  In one embodiment of the present invention, the broadcast service is, for example, a DAB broadcast service.

  In addition, the list display method according to an embodiment of the present invention is executed using a digital broadcast receiver that associates location information and identification information with each other and stores them in a storage unit for each of a plurality of broadcast facilities that broadcast a broadcast service. A step of specifying a broadcast facility that broadcasts a broadcast service being received based on the identification information, and a distance between the specified broadcast facility and each of the other broadcast facilities stored in the storage unit. Reordering that rearranges a list of broadcast services broadcast by each of the plurality of broadcast facilities based on the acquisition step acquired based on the location information of the broadcast facility and the distance from each broadcast facility acquired by the acquisition step And a display step for displaying a list in which broadcast services are rearranged.

  In addition, the list display method according to an embodiment of the present invention is executed using a digital broadcast receiver that associates location information and identification information with each other and stores them in a storage unit for each of a plurality of broadcast facilities that broadcast a broadcast service. Each of the other broadcast facilities stored in the storage unit, starting from the specified step of specifying the broadcast facility that broadcasts the broadcast service being received based on the identification information, and the position of the specified broadcast facility A broadcast service broadcast on each of a plurality of broadcast facilities based on an evaluation step for evaluating the ease of reception of a broadcast service broadcast on the network, and the ease of reception of each broadcast service evaluated in the evaluation step A rearranging step for rearranging the list, and a display step for displaying the list in which the broadcasting services are rearranged.

  According to an embodiment of the present invention, a digital broadcast receiver and a list display method suitable for displaying a list of broadcast services that are highly likely to be received are provided.

It is a block diagram which shows the structure of the digital broadcast receiver which concerns on one Embodiment of this invention. It is a figure which shows typically the structure of the ensemble contained in each frequency block receivable with the digital broadcast receiver which concerns on one Embodiment of this invention. It is a figure which illustrates the station list displayed on the touchscreen display of the digital broadcast receiver concerning one embodiment of the present invention. It is a figure which shows the flowchart of the rearrangement update process performed in one Embodiment of this invention. FIG. 5 is a diagram illustrating a station list before and after the rearrangement update process illustrated in FIG. 4. It is a figure which shows typically the structure of the ensemble position list stored in the flash memory of the digital broadcast receiver which concerns on one Embodiment of this invention. It is a figure which shows the flowchart of the rearrangement update process performed in another one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, as an embodiment of the present invention, a digital broadcast receiver capable of receiving a DAB service will be described as an example.

  FIG. 1 is a block diagram showing a configuration of a digital broadcast receiver 100 according to an embodiment of the present invention. The digital broadcast receiver 100 is, for example, a vehicle-mounted device mounted on a vehicle traveling on a road. As shown in FIG. 1, an MPU (Micro Processing Unit) 110, an HMI (Human Machine Interface) 120, a DAB block 130, A flash memory 140, an audio amplifier 150, a speaker 160, and a communication interface 170 are provided.

  Note that FIG. 1 illustrates main components necessary for the description of the present embodiment, and some components such as a casing that is a general component for a digital broadcast receiver are illustrated. Omitted where appropriate.

  The digital broadcast receiver 100 is not limited to a vehicle-mounted device. The digital broadcast receiver 100 is, for example, a portable terminal such as a smartphone, a feature phone, a PHS (Personal Handy phone System), a tablet terminal, a notebook PC, a PDA (Personal Digital Assistant), a PND (Portable Navigation Device), or a portable game machine. It may be.

  For example, when an engine is started on a vehicle, power is supplied from a battery (not shown) to various circuits of the digital broadcast receiver 100 through a power supply line. After supplying power, the MPU 110 reads the control program stored in the internal memory, loads it into the work area, and executes the loaded control program to control the entire digital broadcast receiver 100.

  The HMI 120 is an interface for exchanging information between the user and the broadcast receiver 100. Specifically, the HMI 120 is a touch panel display, mechanical keys arranged around it, a remote controller, and the like. The MPU 110 outputs a reception control signal to the DAB block 130 in accordance with the channel selection operation for the HMI 120.

  The DAB block 130 is a block that performs DAB signal reception processing, and includes an antenna 132 and a DAB receiver 134.

  The antenna 132 receives a DAB ensemble signal. The DAB ensemble signal includes a synchronization channel used for frame synchronization at the time of demodulation, an FIC (Fast Information Channel) including service configuration information, and an MSC (Main Service Channel) including a voice service and a data service. .

  The FIC is composed of FIB (Fast Information Block), and includes each identifier such as EID, SID, SCIdS, and label data associated with the identifier. FIB includes FIG (Fast Information Group) and CRC (Cyclic Redundancy Check). FIGs are classified into eight types, Type 0 to Type 7, depending on their use.

  The FIG includes a FIG header and a FIG data field. The FIG Type is notified in the FIG header, and the notified label type is identified by an extension in the FIG data field. The label data is transmitted by a Type 1 FIG. The ensemble label, service label, and service component label are notified with Extension = 0, Extension = 1, and Extension = 4, respectively. FIG which performs notification of an ensemble label is described as FIG 1/0 (type 1 field for extension 0) by combining Type and Extension. Similarly, FIGs for notifying service labels and service component labels are represented as FIG 1/1 and FIG 1/4.

  The Type 1 field in the FIG data field is composed of an Identifier field, a Character field, and a Character flag field. In the identifier field of FIG Type 1, EID is inserted when the notified label is an ensemble label, SID is inserted when it is a service label, and SID and SCIdS are inserted when it is a service component label. The character string data of the label (data length: fixed to 16 bytes) is inserted into the FIG. Type 1 Character field.

  Although label transmission is not essential in the DAB broadcast standard, at least service label transmission is strongly recommended. In practice, almost all broadcast stations transmit service labels. Further, since the service component basically does not require the user to identify the service and the service component (primary service component), the label is often not set. However, a label is often set for the secondary service component to distinguish it from the primary service component. Also, ensemble labels are often transmitted.

  The DAB receiver 134 demodulates the DAB ensemble signal received by the antenna 132, and selects and decodes a service from the demodulated DAB ensemble signal according to the reception control signal input from the MPU 110. The audio service signal and display data (including label data) obtained by decoding are output to the audio amplifier 150 and the HMI 120, respectively.

  The audio amplifier 150 amplifies the voice service signal input from the DAB receiver 134 and outputs it to the speaker 160. As a result, the audio service broadcast from the selected broadcasting station is output and reproduced.

  The HMI 120 displays current information on the touch panel display based on the display data input from the DAB receiver 134. As an example of the current information displayed on the touch panel display, the frequency of the ensemble being received, the ensemble label, the label of the selected service (output reproduction), and the like are displayed.

  The communication interface 170 is an interface for communicating with an external device such as a server placed on the network. For example, the MPU 110 can acquire information on the Internet via the communication interface 170.

[Normal update processing]

  A normal update process for executing a seek process to update (create) a station list will be described. FIG. 2 schematically shows a configuration of an ensemble included in each receivable frequency block.

  As illustrated in FIG. 2, one frequency block (ensemble) includes a frequency block ID (for example, 6A), an ensemble label (for example, Ensemble A), an EID (for example, CA11), and each service component.

  The service component includes information on the service and the service component. For example, a service label (eg, DAB Station A-01), SID (eg, CA09), SCIdS (eg, 0), and primary / secondary type (eg, Primary) Including.

  The primary service component is often not labeled. Therefore, in the example of FIG. 2, a service label is cited. In another embodiment, a primary service component label (possibly a secondary service component label) may be included in addition to or instead of the service label.

  Stored in the internal memory of the MPU 110 is a station list 112 that lists broadcast service labels (service or service component labels, hereinafter referred to as “broadcast labels” for convenience of explanation) belonging to ensembles that have received reception. Is done. FIG. 3 illustrates a station list 112 displayed on the touch panel display of the HMI 120.

  As shown in FIG. 3, in the station list 112, the ensembles of each frequency band are arranged in ascending order, and the broadcast labels are arranged in alphabetical order in each ensemble.

  Note that it is difficult to increase the size of the touch panel display due to restrictions on the size of the digital broadcast receiver 100. Therefore, the station list 112 may be displayed divided into a plurality of pages, for example, or displayed in units of ensembles.

  The MPU 110 updates (creates) the station list 112 by executing a normal update process in accordance with a user operation on the HMI 120. Specifically, the MPU 110 deletes the station list 112 when it is stored in the internal memory. Next, the MPU 110 outputs a reception control signal to the DAB block 130 to instruct the selection of one frequency block.

  In the DAB block 130, reception processing is performed in accordance with the reception control signal input from the MPU 110. When the ensemble is detected in the DAB block 130 and decoding is successful, service configuration information necessary for updating (creating) the station list 112 is obtained and output to the MPU 110. In addition to the information illustrated in FIG. 2, the service configuration information may include information such as ECC (Extended Country Code).

  When the MPU 110 acquires the service configuration information from the DAB block 130, the MPU 110 instructs the DAB block 130 to select the next frequency block, and similarly attempts to acquire the service configuration information for the next frequency block. Even when the MPU 110 cannot acquire the service configuration information from the DAB block 130 within a certain time, the MPU 110 instructs the DAB block 130 to select the next frequency block and tries to acquire the service configuration information.

  The MPU 110 performs such seek processing for all frequency blocks included in the DAB broadcast frequency band. The frequency band of DAB broadcasting includes a Band III band (174 to 240 MHz) including 41 channels from channels 5A to 13F, and an L-Band band (1452 to 1492 MHz) including 23 channels from LA to LW. .

  The MPU 110 creates the station list 112 based on the acquired service configuration information when the result of acquisition / acquisition failure of the service configuration information is obtained for all frequency blocks included in the frequency band of DAB broadcasting. The station list 112 is displayed on the touch panel display of the HMI 120 (see FIG. 3).

  The user can select a desired station (service (primary service component) or secondary service component) from the station list 112 displayed on the touch panel display of the HMI 120. When the desired station on the station list 112 is selected and operated, the MPU 110 selects an ensemble in which the service of the desired station is broadcast based on the frequency, EID, and SID of the ensemble stored in association with the selected desired station. Channel selection is performed, and the audio service of the selected desired station is output and reproduced from the speaker 160.

[Sort update processing]
In a configuration in which a plurality of tuners (DAB receivers 134) are mounted, the station list 112 can be updated to the latest content by performing seek processing using another tuner while receiving a desired station using one tuner. it can. On the other hand, in a configuration in which only one tuner is mounted as in the digital broadcast receiver 100 according to the present embodiment, reception of a desired station needs to be interrupted in order to execute seek processing.

  Here, FIG. 4 shows a process executed by the MPU 110 of the digital broadcast receiver 100 according to the embodiment of the present invention, in which the station list 112 can be updated without performing a seek process. The flowchart of an update process is shown.

  Since the seek process is not required to execute the rearrangement update process shown in FIG. 4, the station list 112 can be updated while receiving the desired station even in a configuration in which only one tuner is mounted. In addition, unlike the configuration described in Patent Document 1, cooperation with the navigation system is not required for executing the reordering update process shown in FIG.

  The reordering process shown in FIG. 4 differs depending on, for example, the timing at which the station list 112 has already been created and the ensemble can be received after the digital broadcast receiver 100 is turned on or the channel selection operation. The execution is started at the timing when reception of the ensemble is started.

  FIG. 5A illustrates the station list 112 before the reordering update process illustrated in FIG. 4 is executed (before the reordering update), and FIG. 5B illustrates the reordering update illustrated in FIG. The station list 112 after processing is executed (after rearrangement update) is illustrated. In the station list 112 shown in FIG. 5, in addition to the broadcast label, ensemble information and ensemble distance (described later) are also displayed. However, as in FIG. 3, only the broadcast label may be displayed.

  In the present embodiment, as shown in FIG. 5, information of ensembles A to C and W is included in the station list 112.

[S11 in FIG. 4 (Access to Ensemble Position List 142)]
The flash memory 140 stores an ensemble position list 142. FIG. 6 schematically shows the configuration of the ensemble position list 142.

  As shown in FIG. 6, the ensemble position list 142 includes information on broadcasting equipment (for example, a radio tower) that broadcasts each ensemble. The information related to the broadcasting equipment includes, for example, EID, frequency band (frequency block ID), broadcasting equipment position (longitude / latitude), and broadcasting area type (narrow area / wide area). The narrow area is, for example, a partial area (region) of the country, and the wide area is, for example, the whole country (national).

  The ensemble position list 142 is stored in the flash memory 140 at the time of shipment of the digital broadcast receiver 100, for example. The ensemble position list 142 may be obtained afterwards using means such as a recording medium such as a memory card or the Internet, or may be updated as appropriate using these means.

  In this process step S11, the ensemble position list 142 is accessed.

[S12 in FIG. 4 (Determination of Ensemble during Reception)]
In this processing step S12, the broadcast area type associated with the EID (or frequency block ID) of the currently received ensemble is read from the ensemble position list 142, and the currently received ensemble is read from the read broadcast area type. It is determined whether or not the broadcast area is local.

  Here, this flowchart is described on the assumption that the ensemble B is received. The EID of ensemble B is CB11. According to FIG. 6, since the broadcast area type associated with CB11 is local, YES is determined in step S12.

  If the currently received ensemble broadcast area is nationwide (S12: NO), the process of this flowchart ends.

[S13 in FIG. 4 (Calculation of Ensemble Distance)]
This processing step S13 is executed when it is determined in processing step S12 (determination of the ensemble being received) that the broadcast area of the currently received ensemble is a local area (S12: YES). In this processing step S13, using the position (longitude / latitude) of each broadcast facility included in the ensemble position list 142, the broadcast facility that broadcasts the currently received ensemble and other stations included in the station list 112 are displayed. The distance to each broadcasting facility that broadcasts the ensemble is calculated. For convenience of explanation, the distance calculated here is referred to as “ensemble distance”. For convenience of explanation, each broadcasting facility that broadcasts the ensembles A, B, C, and W is referred to as “broadcasting facility A”, “broadcasting facility B”, “broadcasting facility C”, and “broadcasting facility W”.

  The ensemble distance is a distance between a base point (position of a broadcast facility that broadcasts the currently received ensemble) and an end point (position of a broadcast facility that broadcasts other ensembles included in the station list 112). When starting from the broadcasting facility B, the ensemble distances from the respective end points (broadcasting facilities A, C, W) are as shown below.

Ensemble distance with broadcasting equipment A: 100km
Ensemble distance with broadcasting equipment C: 10km
Ensemble distance with broadcasting equipment W:-

  In the ensemble position list 142, the data of which the broadcast area type is nationwide does not include the position (longitude / latitude) of the broadcast facility. Therefore, the ensemble distance with the broadcasting facility W is not calculated.

  In addition, some ensembles whose broadcast area type is local are broadcast by a plurality of broadcast facilities. For such broadcasting, the latitude / longitude of the approximate middle position of a plurality of broadcasting facilities is registered in the ensemble position list 142 as “position of broadcasting equipment (longitude / latitude)”.

[S14 in FIG. 4 (Reordering of Station List 112)]
In this processing step S14, the station list 112 is rearranged based on the ensemble distance calculated in processing step S13 (calculation of ensemble distance). In the station list 112, in principle, the broadcasting label of the broadcasting service belonging to the currently received ensemble is positioned at the highest level, and the broadcasting facility that broadcasts the currently received ensemble at the lower level is the broadcasting facility. (In other words, the broadcast label of the broadcast service broadcast on the ensemble distance is short) is rearranged so as to be positioned higher.

  It can be said that the ensemble distance is 0 km for the broadcasting equipment that broadcasts the currently received ensemble. For this reason, it can be expressed that “in principle, the station list 112 is rearranged so that the broadcast label of the broadcast service broadcast by the broadcast facility with a short ensemble distance is positioned higher”.

  A broadcasting facility with a shorter ensemble distance is more likely to be closer to the digital broadcasting receiver 100. Therefore, a broadcast service that is broadcast by a broadcast facility with a short ensemble distance is more likely to be received by the digital broadcast receiver 100. That is, in this processing step S14, the station list 112 is rearranged so that the broadcast label of the broadcast service that is highly likely to be received is positioned higher.

  The user can display the station list 112 after the rearrangement update on the touch panel display of the HMI 120 by performing a predetermined operation.

  As described above, in this embodiment, the broadcast label of the broadcast service that is highly likely to be received is arranged at the upper level of the station list 112. The upper part of the station list 112 is easily noticeable by the user, for example, and can be browsed without scrolling or with little screen scrolling. Therefore, by placing the broadcast label of the broadcast service that is highly likely to be received at the upper level of the station list 112, the convenience at the time of channel selection is improved for the user.

  In the present embodiment, some exception rules are applied when the station list 112 is rearranged and updated. Whether or not to apply this type of exception rule may be appropriately changed by a user operation, for example.

<< Exception Rule 1 >>
Broadcast labels for broadcast services whose broadcast area type belongs to national ensembles (national ensembles) are placed higher than broadcast labels for broadcast services whose broadcast area types belong to local ensembles (ensembles broadcast in some areas). .

  Before the rearrangement update process shown in FIG. 4 is executed, broadcast labels of broadcast services belonging to each ensemble are arranged in the order of ensembles A, B, C, and W (see FIG. 5A). After executing the reordering update process, the exception rule 1 is applied, so that the broadcast labels of the broadcast services belonging to each ensemble are arranged in the order of the ensembles W, B, C, and A (see FIG. 5B). .

  National broadcast ensembles are very likely to be received. Therefore, in the example of FIG. 5B, the broadcast label of the broadcast service belonging to the ensemble W is arranged at the top of the station list 112.

  Note that there may be cases where information on ensembles of national broadcasts of a plurality of countries (for example, European countries) is mixed in the station list 112. In this case, for example, an ensemble in which the EID of the currently received ensemble matches the country code part (first 4 bits) is identified from the EIDs of the national broadcast ensembles of each country, and the identified national broadcast ensemble The broadcast label of the broadcast service to which it belongs is placed at the top of the station list 112.

  It should be noted that the ensemble of national broadcasting in other countries is unlikely to be received. Therefore, these ensembles are displayed below the station list 112, for example, or are filtered so as not to be displayed in the station list 112.

  Some countries, such as Armenia, Austria and Iceland, have the same country code. It is preferable to refer to the ECC in order to improve the accuracy of identifying an appropriate EID from the EIDs of the national broadcast ensemble of each country.

<Exception rule 2>
Broadcast labels for broadcast services belonging to an ensemble broadcast by a broadcasting facility with an ensemble distance greater than a specified value are not displayed.

  The possibility of receiving an ensemble broadcast by a broadcasting facility far away from the digital broadcast receiver 100 is low. By performing a filtering process on broadcast labels of broadcast services belonging to such an ensemble so as not to be displayed in the station list 112, a useless channel selection operation (an operation for selecting an ensemble that cannot be received) can be avoided.

  For example, consider a case where the specified value is 90 km. In this case, the display of the broadcast label of the broadcast service belonging to the ensemble A is deleted from the station list 112.

  The above is the description of the exemplary embodiments of the present invention. Embodiments of the present invention are not limited to those described above, and various modifications are possible within the scope of the technical idea of the present invention. For example, the embodiment of the present application also includes contents appropriately combined with examples and the like clearly shown in the specification or obvious examples.

  In the above embodiment, in principle, the station list 112 is rearranged so that the broadcast label of the broadcast service broadcast by the broadcast facility with a short ensemble distance is positioned higher. In another embodiment, an evaluation value indicating the ease of receiving a broadcast service, starting from the position of a broadcasting facility that broadcasts the currently received ensemble, is calculated, and the calculated evaluation values are in the order of ensembles, Broadcast labels of broadcast services may be rearranged.

The evaluation value indicating the ease of receiving the broadcast service is illustratively at least one of the following parameters (1) to (3):
(1) Ensemble distance,
(2) Broadcast output from broadcasting facilities,
(3) the size of the area where the ensemble is broadcast,
Is calculated based on

  FIG. 7 is a flowchart of a reordering update process that is executed by the MPU 110 of the digital broadcast receiver 100 according to another embodiment and that can update the station list 112 without executing a seek process. Indicates. Note that the description overlapping with the reordering update process shown in FIG. 4 is simplified or omitted as appropriate.

[S21 to S22 in FIG. 7]
In the processing steps S21 to S22, the same processing as the processing steps S11 to S12 of FIG. 4 is executed.

[S23 in FIG. 7 (Calculation of Evaluation Value)]
In this processing step S23, for each ensemble (in other words, each broadcasting facility) included in the station list 112, an evaluation value indicating the ease of receiving the broadcasting service is calculated based on the parameters (1) to (3). Prior to the calculation of the evaluation value, the ensemble distance of each broadcasting facility, which is parameter (1), is calculated. The parameters (2) and (3) are included in advance in the ensemble position list 142, for example.

  In this processing step S23, scoring is performed for each parameter. For parameter (1), the shorter the ensemble distance, the higher the score. A higher score is assigned to the parameter (2) as the broadcast output from the broadcast facility is higher. For parameter (3), the higher the area where the ensemble is broadcast, the higher the score.

  In this processing step S23, the score assigned to each parameter is added, and the total value is calculated as an evaluation value for each ensemble included in the station list 112.

[S24 in FIG. 7 (Reordering of Station List 112)]
In this processing step S24, the station list 112 is rearranged in the descending order of the evaluation values calculated in the processing step S23 (evaluation value calculation). In another embodiment, the ease of receiving a broadcast service is evaluated in a multifaceted manner using a plurality of parameters. Therefore, the station list 112 is rearranged so that the broadcast label of the broadcast service that can be received with higher accuracy is positioned higher.

100 Digital broadcast receiver 110 MPU
112 Station list 120 HMI
130 DAB block 132 Antenna 134 DAB receiver 140 Flash memory 142 DAB label list 150 Audio amplifier 160 Speaker 170 Communication interface

Claims (15)

A storage unit that stores location information and identification information in association with each other for each of a plurality of broadcast facilities that broadcast a broadcast service;
A specifying unit for specifying a broadcast facility that broadcasts a broadcast service being received based on the identification information;
An acquisition unit that acquires a distance between the specified broadcast facility and each of the other broadcast facilities stored in the storage unit based on position information of each of the broadcast facilities;
A holding unit for holding a list of broadcast services broadcast on each of the plurality of broadcast facilities;
A reordering unit for reordering broadcast services in the list based on the distance to each broadcast facility acquired by the acquisition unit;
A display unit for displaying a list in which the broadcast services are rearranged;
Comprising
Digital broadcast receiver. The sorting unit is
The higher the broadcast service being broadcasted by the broadcast facility that is closer to the broadcast facility that broadcasts the broadcast service being received,
The digital broadcast receiver according to claim 1. The sorting unit is
The broadcast service being received is arranged higher than the broadcast service broadcast on each of the other broadcast facilities.
The digital broadcast receiver according to claim 1 or 2. The sorting unit is
A filtering process is performed so that the broadcast service being broadcast at a broadcast facility whose distance to the broadcast facility that broadcasts the receiving broadcast service is equal to or greater than a specified value is not displayed in the list.
The digital broadcast receiver as described in any one of Claims 1-3. There are broadcast services that are broadcast in a wide area and broadcast services that are broadcast in a narrower area than the wide area,
The sorting unit is
The broadcasting service broadcast in the wide area is arranged higher than the broadcasting service broadcast in the narrow area,
The digital broadcast receiver as described in any one of Claims 1-4. A storage unit that stores location information and identification information in association with each other for each of a plurality of broadcast facilities that broadcast a broadcast service;
A specifying unit for specifying a broadcast facility that broadcasts a broadcast service being received based on the identification information;
An evaluation unit that evaluates the ease of reception of a broadcast service broadcast from each of the other broadcast facilities stored in the storage unit, starting from the position of the specified broadcast facility;
A holding unit for holding a list of broadcast services broadcast on each of the plurality of broadcast facilities;
A reordering unit that reorders the broadcast services in the list based on the ease of receiving each broadcast service evaluated by the evaluation unit;
A display unit for displaying a list in which the broadcast services are rearranged;
Comprising
Digital broadcast receiver. The evaluation unit is
At least one of the following parameters (1) to (3):
(1) The distance between the broadcast facility that broadcasts the broadcast service being received and each of the other broadcast facilities stored in the storage unit,
(2) Broadcast output by the broadcasting facility,
(3) Area of broadcast service broadcast area,
An evaluation value indicating the ease of reception of the broadcast service is calculated based on
The sorting unit is
Arranging the broadcasting services in the list in the descending order of the evaluation value,
The digital broadcast receiver according to claim 6. The broadcast service is
DAB (Digital Audio Broadcasting) broadcasting service,
The digital broadcast receiver according to any one of claims 1 to 5. A list display method executed by using a digital broadcast receiver that associates position information and identification information with each other and stores them in a storage unit for each of a plurality of broadcast facilities that broadcast a broadcast service,
A specific step of specifying a broadcast facility that broadcasts a broadcast service being received based on the identification information;
An acquisition step of acquiring a distance between the specified broadcast facility and each of the other broadcast facilities stored in the storage unit based on position information of each broadcast facility;
A rearrangement step of rearranging a list of broadcast services broadcast on each of the plurality of broadcast facilities based on the distance to each broadcast facility acquired by the acquisition step;
A display step of displaying a list in which the broadcast services are rearranged;
including,
List display method. In the sorting step,
The higher the broadcast service being broadcasted by the broadcast facility that is closer to the broadcast facility that broadcasts the broadcast service being received,
The list display method according to claim 9. In the sorting step,
The broadcast service being received is arranged higher than the broadcast service broadcast on each of the other broadcast facilities.
The list display method according to claim 9 or 10. In the sorting step,
A filtering process is performed so that the broadcast service being broadcast at a broadcast facility whose distance to the broadcast facility that broadcasts the receiving broadcast service is equal to or greater than a specified value is not displayed in the list.
The list display method according to any one of claims 9 to 11. There are broadcast services that are broadcast in a wide area and broadcast services that are broadcast in a narrower area than the wide area,
In the sorting step,
The broadcasting service broadcast in the wide area is arranged higher than the broadcasting service broadcast in the narrow area,
The list display method according to any one of claims 9 to 12. A list display method executed by using a digital broadcast receiver that associates position information and identification information with each other and stores them in a storage unit for each of a plurality of broadcast facilities that broadcast a broadcast service,
A specific step of specifying a broadcast facility that broadcasts a broadcast service being received based on the identification information;
An evaluation step for evaluating the ease of receiving a broadcast service broadcast on each of the other broadcast facilities stored in the storage unit, starting from the position of the specified broadcast facility;
A rearrangement step of rearranging a list of broadcast services broadcast on each of the plurality of broadcast facilities based on the ease of receiving each broadcast service evaluated in the evaluation step;
A display step of displaying a list in which the broadcast services are rearranged;
including,
List display method. In the evaluation step,
At least one of the following parameters (1) to (3):
(1) The distance between the broadcast facility that broadcasts the broadcast service being received and each of the other broadcast facilities stored in the storage step,
(2) Broadcast output by the broadcasting facility,
(3) Area of broadcast service broadcast area,
An evaluation value indicating the ease of reception of the broadcast service is calculated based on
In the sorting step,
Arranging the broadcasting services in the list in the descending order of the evaluation value,
The list display method according to claim 14.

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