JP5734100B2 - Vehicular broadcast receiving apparatus, vehicular broadcast receiving method, and computer program - Google Patents

Description

  The present invention relates to a vehicular broadcast receiving apparatus, a vehicular broadcast receiving method, and a computer program that receive a broadcast in a vehicle.

  In recent years, digital broadcasting has been used in addition to conventional analog broadcasting in television broadcasting. Here, analog broadcasting and digital broadcasting use the VHF band and UHF band, and basically one physical channel (frequency band of radio waves) is assigned to one broadcasting station. In addition, broadcasting stations differ for each broadcasting area, and the physical channels used also differ.

  Therefore, when a television broadcast is received, a broadcast area is set in the television receiver. Here, if it is a fixed type television receiver that does not change the installation location, if the broadcast area is set first, then the frequency band (physical channel) to be received is determined based on the set contents, Furthermore, it becomes possible to appropriately associate channel numbers (for example, channels 1 to 12) with broadcast stations. However, in the television receiver installed in the vehicle, since the installation position of the television receiver is not fixed, it is necessary to change the setting of the broadcast area when the broadcast area where the vehicle is located changes. For example, Japanese Patent Laid-Open No. 2009-5006 describes a technology that includes a channel list corresponding to a plurality of broadcast areas, reads the channel list corresponding to the broadcast area where the vehicle is located, and sets the broadcast area. Yes.

Japanese Patent Laying-Open No. 2009-5006 (pages 9 to 11, FIG. 1)

  However, when the boundary of the broadcast area has a complicated shape and the vehicle travels in the vicinity of the boundary, the broadcast area where the vehicle is located may be continuously switched at short intervals while the vehicle is traveling. . In such a case, in the technique described in Patent Document 1, the association between the channel number and the broadcast station is continuously switched according to the broadcast area where the vehicle is located.

  Conventionally, when a vehicle crosses the boundary of administrative divisions such as prefectures, the administrative division where the vehicle has newly entered is guided by a navigation device, a portable terminal, or the like. Here, when the boundaries of the administrative divisions have a complicated shape as in the broadcast area, and the vehicle travels in the vicinity of the boundaries, the guidance of the administrative divisions is continuously provided at short intervals while the vehicle is traveling. Will be done. Therefore, a technique has been proposed in which the next guidance is not performed until a predetermined time elapses after the previous administrative district guidance is performed or the vehicle travels a predetermined distance.

  Here, the broadcast area corresponds to a specific administrative division (specifically, a prefecture and some municipalities). Therefore, when the boundary of a specific administrative division has a complicated shape and the vehicle travels in the vicinity of the boundary, it corresponds to the administrative division guided by a navigation device or a mobile terminal in a television receiver. Broadcast stations that do not do so will be broadcast. That is, a contradiction arises between the administrative district guidance and the channel setting.

  The present invention has been made to solve the above-described conventional problems, and prevents a contradiction between administrative district guidance and channel setting, a vehicular broadcast receiving apparatus, a vehicular broadcast receiving method, and An object is to provide a computer program.

  In order to achieve the above object, a vehicular broadcast receiving apparatus (1) according to claim 1 of the present application includes a vehicle position acquisition means (52) for acquiring the position of a vehicle, and a vehicle position acquisition means for acquiring the position of the vehicle. An administrative division specifying means (53) for specifying, as a current location administrative division, an administrative division in which the vehicle is located based on a position; and an administrative division change determining means (54) for determining whether or not the current location administrative division has been changed. If the administrative district change determining means determines that the current location administrative division has been changed, administrative division guidance means (55) for guiding the changed current location administrative division, and a channel number and a broadcasting station for each administrative division Based on the list acquisition means (56) for acquiring the channel list (61) specifying the combination of the current location, the current location administrative section and the channel list, the current location administration Channel setting means (57) for setting a combination of a channel number corresponding to a picture and a broadcasting station, and the administrative district guidance means is determined by the administrative district change judging means that the current location administrative district has been changed. After the change, when it is determined that a predetermined time or more has passed since the previous guidance for the current location administrative district was provided by the administrative district guidance means or the vehicle is traveling more than a predetermined distance. The channel setting means is a case where it is determined that the current location administrative section has been changed by the administrative section change determination means, and the current location administrative section is previously changed by the administrative section guide means. If it is determined that more than a predetermined time has passed since the guidance was performed or the vehicle is traveling more than a predetermined distance, the current location after the change And changes the setting to the combination of the broadcasting station and the channel number corresponding to the partition.

  According to a second aspect of the present invention, there is provided the vehicular broadcast receiving apparatus (1) according to the first aspect, wherein the administrative section guidance means (55) is provided by the administrative section change determining means (54). When it is determined that the current location prefecture where the vehicle is located has been changed, the changed current location prefecture is guided, and the channel list (61) is divided into the prefecture and some municipalities. A combination of a channel number and a broadcasting station is specified for each broadcast area, and the channel setting means (57) is configured to transmit the current location broadcast based on the current location broadcast area, which is a broadcast area where the vehicle is located, and the channel list. A combination of a channel number and a broadcasting station corresponding to the area is set.

  According to a third aspect of the present invention, there is provided the vehicular broadcast receiving apparatus (1) according to the second aspect, wherein the channel setting means (57) is controlled by the administrative division change determining means (54). When it is determined that the current location prefecture has been changed, a predetermined time has passed since the previous administrative district guidance means (55) provided guidance for the current location prefecture, or the vehicle has traveled more than a predetermined distance. When it is determined that there is a channel number, the setting is changed to the combination of the channel number and the broadcasting station corresponding to the current location prefecture after the change.

  A vehicle broadcast receiver (1) according to claim 4 is the vehicle broadcast receiver according to any one of claims 1 to 3, wherein the channel set by the channel setting means (57). It has channel guide means (58) for guiding a combination of a number and a broadcasting station.

  A vehicle broadcast receiver (1) according to claim 5 is the vehicle broadcast receiver according to any one of claims 1 to 4, wherein the state of the vehicle broadcast receiver is changed to the administrative section. The channel setting means (57) includes a guidance state switching means (59) for switching between a guidance state where guidance is provided by the guidance means (55) and a non-guidance state where guidance is not provided by the administrative district guidance means. When the state of the vehicle broadcast receiving apparatus is in the non-guidance state, the administrative district guidance means is used last time when the administrative district change judgment means (54) judges that the current location administrative district has been changed. Even if it is determined that the predetermined time or more has not elapsed since the guidance of the current location administrative district was performed by or the vehicle has not traveled more than a predetermined distance, And changes the setting to the combination of the broadcasting station and the channel number corresponding to the current position administrative district.

The vehicle broadcast receiving method according to claim 6, vehicle position acquisition means includes Luz step to obtain the position of the vehicle, the administrative district specifying means, the position of the vehicle acquired by the vehicle position acquisition unit based on the absence steps to identify the administrative district in which the vehicle is positioned as current location administrative district, the administrative district change determination means, Luz step to determine whether the current position administrative district is changed, administrative districts guiding means, in the case where the current position administrative district by the administrative district change determining means is determined to have been changed, and Luz step to guide the current location administrative district of the changed list acquisition unit, the channel for each administrative district and Luz step to obtain the channel list (61) identifying the combination of numbers and the broadcasting station, the channel setting means, the based on the channel list and the current position administrative areas, Serial includes a channel number corresponding to the current location administrative areas and answering step to set a combination of the broadcast station, and the administrative divisions guiding means, it is determined that the current position administrative district is changed by the administrative district change determination means After the change, when it is determined that a predetermined time or more has passed since the previous guidance for the current location administrative district was provided by the administrative district guidance means or the vehicle is traveling more than a predetermined distance. The channel setting means is a case where it is determined that the current location administrative section has been changed by the administrative section change determination means , and the current location administrative section is previously changed by the administrative section guide means . If it is determined that more than a predetermined time has passed since the guidance was made or the vehicle is traveling more than a predetermined distance, the current location administrative district after the change And changes the setting to the combination of the broadcasting station and the channel number corresponding to the.

  The computer program according to claim 7 is mounted on a computer, and the vehicle is positioned based on a vehicle position acquisition function for acquiring the position of the vehicle and the position of the vehicle acquired by the vehicle position acquisition function. The administrative district specifying function that identifies the administrative district as the current administrative district, the administrative district change determining function that determines whether or not the current administrative district has been changed, and the administrative district change determining function that has changed the current administrative district An administrative section guidance function for guiding the current administrative district after the change, a list acquisition function for acquiring a channel list (61) specifying a combination of a channel number and a broadcasting station for each administrative district, Based on the current location administrative division and the channel list, a set of the channel number and broadcasting station corresponding to the current location administrative division A channel setting function for setting a program, and a computer program that causes a processor to execute the administrative district guidance function when the administrative district change determining step determines that the current location administrative district has been changed, If it is determined that a predetermined time has elapsed since the guidance of the current location administrative district was previously conducted by the administrative district guidance function or the vehicle is traveling more than a predetermined distance, the changed current location administrative district is The channel setting function is a case where it is determined that the current location administrative division has been changed by the administrative division change determination function, and the current administrative division guidance has been previously provided by the administrative division guidance function. If it is determined that a predetermined time or more has elapsed or the vehicle is traveling more than a predetermined distance, the current And changes the setting to the combination of the broadcasting station and the channel number corresponding to the administrative district.

  According to the vehicle broadcast receiving apparatus of claim 1 having the above-described configuration, for example, when the administrative section where the vehicle is located is switched in a short time by the vehicle traveling on the boundary of the administrative section, It is possible to prevent inconsistency between the section guidance and the channel setting. In addition, it is possible to omit unnecessary processing related to administrative district guidance and channel setting, thereby reducing the processing load on the processor. Furthermore, since administrative district guidance and channel setting are not continuously changed, the user is not confused and the concentration is not lost.

  In addition, according to the broadcast image receiving apparatus for a vehicle according to claim 2, it is possible to prevent a contradiction between the prefectural government to be guided and the channel setting particularly when performing prefectural border guidance. . As a result, there is no possibility that the user may misrecognize the prefecture where the user is currently located.

  In addition, according to the vehicle broadcast receiver of claim 3, regarding the movement of the vehicle between the municipalities where the prefectural border guidance is not performed, when the broadcasting area is switched between the municipalities, The channel setting corresponding to the municipality will be changed, so it is possible to set the channel corresponding to the moved municipality without causing a contradiction between the prefectural government to be guided and the channel setting. It becomes.

  Further, according to the vehicle broadcast receiving apparatus of the fourth aspect, since the set channel number and the combination of the broadcast station are guided, the user can view the broadcast station that can be viewed and the broadcast station. It is possible to grasp the channel number that needs to be selected.

  Further, according to the vehicle broadcast receiver of claim 5, when the administrative section where the vehicle is located is set to a non-guided state where guidance is not performed, guidance for the administrative section is not performed. Since the channel setting corresponding to the broadcast area after the movement is changed, the channel setting corresponding to the broadcast area after the movement can be performed without causing a contradiction between the administrative section to be guided and the channel setting. It becomes possible.

  Further, according to the broadcast image receiving method for a vehicle according to claim 6, for example, when the administrative section where the vehicle is located is switched in a short time due to the vehicle traveling on the boundary of the administrative section, It is possible to prevent inconsistency between the guidance and the channel setting. In addition, it is possible to omit unnecessary processing related to administrative district guidance and channel setting, thereby reducing the processing load on the processor. Furthermore, since administrative district guidance and channel setting are not continuously changed, the user is not confused and the concentration is not lost.

  Further, according to the computer program of the seventh aspect, for example, when the administrative district where the vehicle is located is switched in a short time by the vehicle traveling on the boundary of the administrative district, the guidance and channel of the administrative district are switched. It is possible to prevent a contradiction between settings. In addition, it is possible to omit unnecessary processing related to administrative district guidance and channel setting, thereby reducing the processing load on the processor. Furthermore, since administrative district guidance and channel setting are not continuously changed, the user is not confused and the concentration is not lost.

It is the block diagram which showed the navigation apparatus which concerns on this embodiment. It is the figure which showed the various means which navigation ECU comprises. It is the figure which showed an example of the channel list. It is the figure which showed the broadcast image displayed on a liquid crystal display. It is the figure which showed the channel guidance screen displayed on a liquid crystal display. It is a flowchart of the administrative division start processing program concerning this embodiment. It is the figure which showed the presence or absence of prefectural border guidance performed when a vehicle drive | works a prefectural border, and a channel setting.

  DETAILED DESCRIPTION Hereinafter, a vehicle broadcast receiving apparatus according to the present invention will be described in detail with reference to the drawings based on an embodiment in which the navigation apparatus is embodied. First, a schematic configuration of the navigation device 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a navigation device 1 according to this embodiment.

  As shown in FIG. 1, the navigation device 1 according to the present embodiment includes a current position detection unit 11 that detects a current position of a vehicle on which the navigation device 1 is mounted, a data recording unit 12 that records various data, Based on the input information, the navigation ECU 13 that performs various arithmetic processes, the operation unit 14 that receives operations from the user, the liquid crystal display 15 that displays facility information regarding a map and facilities around the vehicle to the user, Communication is performed between a speaker 16 that outputs voice guidance related to route guidance, a DVD drive 17 that reads a DVD as a storage medium, and an information center such as a probe center or a VICS (registered trademark: Vehicle Information and Communication System) center. A communication module 18 and a tuner device 19 for receiving broadcast radio waves are included. To have. The navigation device 1 according to the present embodiment includes a tuner device 19 and functions as a television receiver for receiving television broadcasts. In the example shown below, the tuner device 19 is described as a terrestrial digital tuner device for receiving terrestrial digital broadcasting, but may be a tuner device for receiving, for example, analog broadcasting, one-segment broadcasting, or the like.

Below, each component which comprises the navigation apparatus 1 is demonstrated in order.
The current position detection unit 11 includes a GPS 21, a vehicle speed sensor 22, a steering sensor 23, a gyro sensor 24, and the like, and can detect the current vehicle position, direction, vehicle traveling speed, current time, and the like. . Here, in particular, the vehicle speed sensor 22 is a sensor for detecting a moving distance and a vehicle speed of the vehicle, generates a pulse according to the rotation of the driving wheel of the vehicle, and outputs a pulse signal to the navigation ECU 13. And navigation ECU13 calculates the rotational speed and moving distance of a driving wheel by counting the generated pulse. Note that the navigation device 1 does not have to include all of the above five types of sensors, and the navigation device 1 may include only one or more of these types of sensors.

  The data recording unit 12 is also a hard disk (not shown) as an external storage device and a recording medium, and a driver for reading the map information DB 31 and a predetermined program recorded on the hard disk and writing predetermined data on the hard disk And a recording head (not shown). The data recording unit 12 may be configured by a memory card, an optical disk such as a CD or a DVD, instead of the hard disk.

  Here, the map information DB 31 includes, for example, link data relating to roads (links), node data relating to node points, point data relating to points such as facilities, map display data for displaying maps, intersection data relating to each intersection, and routes. It is a storage means in which search data for searching, search data for searching for points, and the like are stored. The map information DB 31 also stores administrative division data 32 for dividing administrative divisions such as prefectures and municipalities in the map data and broadcasting area data 33 for dividing broadcasting areas.

  On the other hand, the navigation ECU (Electronic Control Unit) 13 is an electronic control unit that controls the entire navigation device 1. The CPU 41 as an arithmetic device and a control device, and a working memory when the CPU 41 performs various arithmetic processes. From the ROM 43 and the ROM 43 in which the RAM 42 storing route data when the route is searched, the control program, the administrative section movement processing program (see FIG. 6) described later, and the like are recorded. An internal storage device such as a flash memory 44 for storing the read program is provided. The navigation ECU 13 constitutes various means as the processing algorithm shown in FIG. For example, the guide route setting means 51 sets a guide route from the departure place to the destination. The vehicle position acquisition means 52 acquires the position of the vehicle, and the administrative division specifying means 53 specifies the administrative division where the vehicle is located as the current location administrative division based on the acquired position of the vehicle. The administrative division change determination means 54 determines whether or not the current location administrative division has been changed, and the administrative division guidance means 55 guides the changed current location administrative division when it is determined that the current location administrative division has been changed. To do. The list acquisition unit 56 acquires a channel list specifying a combination of a channel number and a broadcasting station for each administrative division, and the channel setting unit 57 corresponds to the current administrative district based on the current administrative district and the channel list. Set the combination of channel number and broadcasting station. The channel guidance means 58 guides the combination of the channel number and the broadcasting station set by the channel setting means, and the guidance state switching means 59 guides the state of the navigation device 1 by the administrative division guidance means 55. And the non-guidance state in which the guidance by the administrative division guidance means 55 is not performed.

  The operation unit 14 is operated when inputting a departure point as a travel start point and a destination as a travel end point, and includes a plurality of operation switches (not shown) such as various keys and buttons. Then, the navigation ECU 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches. In the present embodiment, when the terrestrial digital broadcast is received by the navigation apparatus 1, it is also used for selecting a channel number. Furthermore, it is also used when selecting whether or not to implement prefectural border guidance described later. The operation unit 14 can also be configured by a touch panel provided on the front surface of the liquid crystal display 15. Moreover, it can also be comprised with a microphone and a speech recognition apparatus.

  The liquid crystal display 15 also includes a map image including a road, traffic information, operation guidance, operation menu, key guidance, a planned travel route from the departure point to the destination, guidance information along the planned travel route, news, weather Forecast, time, mail, TV program, etc. are displayed. It is also used when outputting prefectural border guidance, outputting TV broadcast images, and displaying a list of combinations of channel numbers and broadcasting stations. The prefectural border guidance is a guide for notifying the prefecture where the vehicle is newly located when the vehicle crosses the prefectural border.

  Further, the speaker 16 outputs voice guidance for guiding traveling along the planned traveling route and traffic information guidance based on an instruction from the navigation ECU 13. It is also used when outputting prefectural border guidance or TV broadcast audio.

  The DVD drive 17 is a drive that can read data recorded on a recording medium such as a DVD or a CD. Based on the read data, music and video are reproduced, the map information DB 31 is updated, and the like.

  The communication module 18 is a communication device for receiving traffic information composed of information such as traffic jam information, regulation information, and traffic accident information transmitted from a traffic information center, for example, a VICS center or a probe center. For example, a mobile phone or DCM is applicable.

  The tuner device 19 is provided integrally with or separately from the navigation device 1, receives broadcast radio waves emitted from the radio tower, and converts a signal of a preselected physical channel (frequency band) into a video signal or an audio signal. It is a device that outputs. Further, the tuner device 19 stores a channel list 61 that specifies a combination of a channel number and a broadcasting station for each broadcasting area.

The channel list 61 will be described in detail below. FIG. 3 is a diagram showing an example of the channel list 61.
As shown in FIG. 3, the channel list 61 includes a broadcast area, a broadcast station name, a channel number, a physical channel, and a provider series number. Broadcast areas are basically classified by prefecture, but some prefectures such as Hokkaido are also classified by municipality. The channel number is a number selected by the operation unit 14 by the user. The physical channel indicates the frequency band of the radio wave of the corresponding broadcast. For example, in the terrestrial digital broadcast, there are 13 to 62 channels. Further, the business entity series number is a number for distinguishing broadcasting stations of the same business operator.
Then, as will be described later, the tuner device 19 identifies and sets a combination of a broadcasting station name, a channel number, a physical channel, and an operator series number corresponding to the broadcasting area where the vehicle is currently located from the channel list 61. The corresponding broadcast is received by the navigation device 1 based on the physical channel corresponding to the channel number selected by the user. Further, the channel number of the broadcast currently being received and the broadcast station name are also displayed on the liquid crystal display 15. For example, when the vehicle is located in A prefecture and the user selects channel number 2, the broadcast image 65 of “A prefecture TV” is displayed on the liquid crystal display 15 as shown in FIG. In addition, a character 66 of “2Ch A prefecture television” is displayed on the upper right of the broadcast image 65. As a result, the user can grasp the broadcast station currently being viewed and the currently selected channel number.

  In addition, by performing a predetermined operation on the menu screen in the navigation device 1, a list of combinations of channel numbers and broadcasting stations currently set in the tuner device 19 may be displayed as the channel guide screen 71 on the liquid crystal display 15. Is possible. For example, FIG. 5 is a diagram showing a channel guidance screen 71 displayed on the liquid crystal display 15 when the vehicle is located in A prefecture. On the channel guidance screen 71, icons 72 indicating combinations of channel numbers and broadcasting stations are displayed in the list as many as the number of set channel numbers. Further, by selecting the icon 72, the channel can be switched to the channel number corresponding to the selected icon 72.

Next, the broadcast radio wave receiving function by the tuner device 19 having the above-described configuration will be described.
First, broadcast radio waves emitted from the radio tower are received by the antenna 62, and the received broadcast radio waves are input to the tuner device 19. Next, the tuner device 19 selects and amplifies the frequency (physical channel) based on the selected channel number, the channel list, and the broadcast area where the vehicle is located in the input broadcast radio wave. Subsequently, the tuner device 19 converts the amplified signal into a digital signal, performs error detection and correction, and then converts it into a transport stream (TS (Transport Stream)) signal. After that, the tuner device 19 converts the TS signal into a video signal or an audio signal and outputs it to the navigation device 1. And the navigation apparatus 1 displays the image | video based on an image signal on the liquid crystal display 15, and outputs the audio | voice based on an audio | voice signal from the speaker 16. FIG. As described above, the broadcast corresponding to the channel number selected by the user in the broadcast corresponding to the broadcast area where the vehicle is located can be received by the navigation device 1.

  Next, the administrative division movement processing program executed by the CPU 41 in the navigation device 1 having the above-described configuration will be described with reference to FIG. FIG. 6 is a flowchart of the administrative division movement processing program according to the present embodiment. Here, the administrative division movement processing program is a program that is executed after the ACC of the vehicle is turned on and performs guidance and channel setting based on the administrative division change when the administrative division where the vehicle is located is changed. Note that the program shown in the flowchart of FIG. 6 below is stored in the RAM 42 or ROM 43 provided in the navigation apparatus 1 and is executed by the CPU 41.

  First, in step (hereinafter abbreviated as S) 1 in the administrative district movement processing program, the CPU 41 acquires the current position of the vehicle based on the detection result of the current position detection unit 11. A map matching process for specifying the current position of the vehicle on the map data is also performed.

  Next, in S2, the CPU 41 identifies the administrative district where the vehicle is currently located (hereinafter, the current administrative district) based on the current location of the vehicle acquired in S1 and the administrative district data 32 stored in the map information DB 31. To do.

  After that, in S3, the CPU 41 determines whether or not the prefecture where the vehicle is located has been changed (that is, whether or not the vehicle has crossed the prefectural border) based on the current location administrative division specified in S2.

  When it is determined that the prefecture where the vehicle is located has been changed (S3: YES), the process proceeds to S5. On the other hand, when it is determined that the prefecture where the vehicle is located has not been changed (S3: NO), the process proceeds to S4.

  In S4, the CPU 41 determines whether or not the broadcast area in which the vehicle is located has been changed based on the current location administrative section identified in S2 and the broadcast area data 33 stored in the map information DB 31. In S4, it is determined for the case where the broadcast area is changed even though the vehicle is traveling in the same prefecture. For example, in some prefectures such as Hokkaido, the broadcasting area may differ depending on the municipality, and this corresponds to the case where the vehicle moves between such municipalities.

  And when it determines with the broadcast area where a vehicle is located having been changed (S4: YES), it transfers to S8. On the other hand, when it is determined that the broadcast area where the vehicle is located has not been changed (S4: NO), the administrative division movement processing program is terminated. If the broadcasting area other than the prefecture where the vehicle is located is changed, prefectural border guidance will not be performed, and there will be no inconsistency between prefectural border guidance and channel setting as will be described later. Even if it belongs, channel setting processing is performed based on the changed prefecture.

  In S5, the CPU 41 determines whether or not the prefectural border guidance is set in the guidance state in the navigation device 1. Here, in the navigation apparatus 1 according to the present embodiment, the “guidance state” in which prefectural border guidance is performed when the user crosses the prefectural border by the operation of the operation unit 14 by the user, and the prefectural border guidance is not performed even if the prefectural border is exceeded. Set to one of the states.

  And when it determines with the navigation apparatus 1 being set to the "guidance state" in said S5 (S5: YES), it transfers to S6. On the other hand, when it is determined that the navigation device 1 is set to the “non-guidance state” (S5: NO), the process proceeds to S8 without performing prefectural border guidance. If prefectural border guidance is not provided, there will be no discrepancy between prefectural border guidance and channel settings as will be described later, so even if the vehicle belongs to the dead zone, the channel Setting processing is performed.

  In S6, the CPU 41 determines whether or not the vehicle belongs to the dead zone. Here, the state belonging to the dead zone is (1) the state from when the prefectural border guidance was performed in the vehicle last time until the vehicle travels a predetermined distance (for example, 200 m), or (2) the prefectural border guidance in the vehicle last time. There is a state in which a predetermined time (for example, 20 seconds) elapses after being performed. Note that it may be determined that the vehicle belongs to the dead zone when either one of the above (1) and (2) is satisfied, or the vehicle belongs to the dead zone when both (1) and (2) are satisfied. May be determined.

  And when it determines with a vehicle belonging to a dead zone (S6: YES), the said administrative division movement processing program is complete | finished, without performing the setting process of the channel based on prefectural border guidance or the changed prefecture. On the other hand, when it is determined that the vehicle does not belong to the dead zone (S6: NO), the process proceeds to S7.

  In S7, the CPU 41 performs prefectural border guidance for guiding the post-change prefecture (prefecture where the vehicle is newly located). Specifically, voice guidance “I entered XX prefecture” is output from the speaker 16, and the prefecture name and prefecture mark are displayed on the liquid crystal display 15.

  Subsequently, in S8, the CPU 41 sets a channel based on the changed broadcast area (prefectures and some municipalities). Specifically, the channel setting of the tuner device 19 is changed to a combination of a channel number and a broadcasting station corresponding to the broadcasting area where the vehicle is newly located. Hereinafter, the process of S8 will be described in detail.

  In the process of S8, first, the CPU 41 outputs to the tuner device 19 a channel setting change instruction based on the broadcast area where the vehicle is newly located. Upon receiving the change instruction, the tuner device 19 first reads the channel list 61 (FIG. 3) stored in the storage medium such as the RAM, and specifies the channel list 61 corresponding to the broadcast area where the vehicle is newly located. . Then, based on the specified channel list 61, a new combination of the broadcast station name, channel number, physical channel, and operator series number is set.

  As a result, when the channel setting process of S8 is performed while the user is receiving a broadcast on the navigation device 1, the received broadcast content is not changed, but the broadcast image 65 (FIG. 4) is displayed. The displayed channel number and broadcasting station name will be changed. When a new channel number is selected by the user, the corresponding broadcast is received by the navigation device 1 based on the physical channel corresponding to the newly set channel number. Further, when the channel setting process of S8 is performed while the channel guide screen 71 (FIG. 5) is displayed on the liquid crystal display 15, the channel number and the broadcasting station combination newly set are set to the channel. The display content of the guidance screen 71 is switched.

And in the navigation apparatus 1 which concerns on this embodiment, the vehicle 81 drive | works the prefectural border of A prefecture and B prefecture along the route 82, as shown in FIG. 7, by performing the process of said S1-S8, for example. In some cases, it is possible to prevent inconsistencies between prefectural border guidance and channel setting.
That is, in the example shown in FIG. 7, the prefecture (broadcast area) where the vehicle is located continuously changes in a short time (B prefecture → A prefecture → B prefecture → A prefecture → B prefecture). Here, in order to prevent the prefectural border guidance from being repeatedly performed as described above, if the dead zone 83 is provided between a predetermined distance (for example, 200 m) from the point A where the prefectural border guidance is performed, the vehicle is dead zone 83. During the period (point B, point C), the prefectural border guidance is not performed. However, if channel setting (S8) corresponding to the broadcasting area of B prefecture is performed at point B, the name of the broadcasting station of B prefecture is recognized even though the user recognizes that he is traveling in A prefecture. Since it is displayed or the association between the channel number and the broadcasting station corresponds to the prefecture B, it causes the user to be confused. Therefore, in the navigation apparatus 1 according to the present embodiment, the configuration in which the channel setting (S8) is not performed while the vehicle belongs to the dead zone 83 can prevent contradiction between the prefectural border guidance and the channel setting. It is possible.

As explained in detail above, in the navigation apparatus 1 according to the present embodiment, the vehicle broadcast receiving method by the navigation apparatus 1 and the computer program executed by the navigation apparatus 1, when the prefecture where the vehicle is located is changed, It is determined whether or not a predetermined time has elapsed since the last prefectural border guidance or the vehicle has traveled more than a predetermined distance (S6), and a predetermined time or more has passed since the prefectural border guidance was given or the vehicle is predetermined When it is determined that the vehicle is traveling more than the distance, prefectural border guidance is performed and channel setting is performed based on a new broadcast area (S7, S8). On the other hand, if it is determined that the predetermined time has not passed since the last prefectural border guidance or the vehicle has not traveled more than the predetermined distance, the prefectural border guidance is not provided and the new broadcasting area is used. Since the channel setting is also controlled so as not to be performed, for example, when the prefecture where the vehicle is located is switched in a short time by driving the border of the prefecture, the prefectural border guidance and the channel setting It is possible to prevent inconsistencies between them. Also, unnecessary prefectural border guidance and channel setting processing can be omitted, and the processing load on the processor can be reduced. Furthermore, since the prefectural border guidance and channel setting are not continuously changed, the user is not confused and the concentration is not lost. Moreover, there is no possibility that the user may mistakenly recognize the prefecture where the user is currently located.
In addition, regarding the movement of vehicles between municipalities where prefectural border guidance is not performed, if the broadcasting area switches between the municipalities, the channel setting corresponding to the municipality after movement will be changed, It is possible to set the channel corresponding to the city after moving without causing any contradiction between the prefectural government to be guided and the channel setting.
In addition, since the channel guidance screen 71 displayed on the liquid crystal display 15 guides the combination of the set channel number and the broadcasting station, the user selects the broadcasting station that can be viewed and the broadcasting station to view. It becomes possible to grasp the necessary channel number.
In addition, when the navigation device 1 is set to a non-guided state where prefectural border guidance is not performed, prefectural border guidance is not performed, but channel settings corresponding to the broadcast area after movement are changed, so that guidance is provided. The channel setting corresponding to the broadcast area after the movement can be performed without causing a contradiction between the prefecture and the channel setting.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in this embodiment, when the prefecture where the vehicle is located is changed, it is supposed to guide the changed prefecture (prefectural border guidance), but when administrative divisions other than the prefecture (for example, municipalities) are changed, You may comprise so that the administrative division after a change may be guided. The broadcast area is set in units of prefectures and some municipalities, but may be set in units of other administrative divisions (for example, Chubu region, Kanto region, etc.).

  Further, in the present embodiment, the processing of each step of the administrative section movement processing program shown in FIG. 7 is executed by the CPU 41 of the navigation device 1, but the CPU provided in the tuner device 19 is a part of the processing of each step or It is good also as a structure which performs all.

  In the present embodiment, an example in which the present invention is applied to the navigation device 1 has been described. However, any device having a tuner device or a GPS can be applied to a mobile terminal such as a mobile phone, a personal computer, or the like. .

1 Navigation device 13 Navigation ECU
15 Liquid crystal display 16 Speaker 31 Map information DB
41 CPU
42 RAM
43 ROM
61 Channel list

Claims (7)

Vehicle position acquisition means for acquiring the position of the vehicle;
Based on the position of the vehicle acquired by the vehicle position acquisition means, the administrative division specifying means for specifying the administrative division where the vehicle is located as the current location administrative division;
Administrative division change determining means for determining whether or not the current location administrative division has been changed;
When it is determined by the administrative division change determining means that the current location administrative division has been changed, administrative division guidance means for guiding the changed current location administrative division;
A list acquisition means for acquiring a channel list specifying a combination of a channel number and a broadcasting station for each administrative division;
Channel setting means for setting a combination of a channel number and a broadcasting station corresponding to the current location administrative division based on the current location administrative division and the channel list;
The administrative district guidance means is a case where it is determined by the administrative district change judgment means that the current location administrative division has been changed, and is predetermined after the administrative district guidance means has previously guided the current location administrative division. When it is determined that the time has passed or the vehicle is traveling a predetermined distance or more, the changed current location administrative district is guided,
The channel setting means is a case in which it is determined that the current location administrative division has been changed by the administrative division change determination means, and a predetermined time has elapsed since the previous administrative district guidance means guided the current location administrative division. When the above has elapsed or when it is determined that the vehicle is traveling more than a predetermined distance, the setting is changed to a combination of a channel number and a broadcasting station corresponding to the changed current location administrative division. Broadcast receiver. The administrative district guidance means guides the changed current location prefecture when it is determined by the administrative district change judgment means that the current location prefecture where the vehicle is located is changed,
The channel list specifies a combination of a channel number and a broadcasting station for each broadcasting area divided by prefecture and some municipalities.
The channel setting means sets a combination of a channel number and a broadcasting station corresponding to the current location broadcast area based on a current location broadcast area which is a broadcast area where the vehicle is located and the channel list. Item 2. The broadcast receiving device for vehicles according to Item 1.   The channel setting means is a case where the administrative district change determining means determines that the current location prefecture has been changed, and a predetermined time or more has passed since the administrative district guidance means previously provided guidance for the current location prefecture. The setting is changed to a combination of a channel number and a broadcasting station corresponding to the current location prefecture after the change when it is determined that the vehicle has traveled more than a predetermined distance. Broadcast receiving device for vehicles.   4. The vehicular broadcast receiving apparatus according to claim 1, further comprising channel guiding means for guiding a combination of a channel number set by the channel setting means and a broadcasting station. A guidance state switching means for switching the state of the vehicle broadcast receiving apparatus to either a guidance state in which guidance is provided by the administrative district guidance means or a non-guidance state in which guidance is not performed by the administrative district guidance means;
The channel setting means, when the state of the vehicle broadcast receiver is in the non-guidance state, when the administrative district change determining means determines that the current location administrative division has been changed, Even if it is determined that a predetermined time or more has not elapsed since the guidance of the current location administrative section is provided by the section guidance means or the vehicle has not traveled more than a predetermined distance, the changed current location administration The broadcast image receiving apparatus for a vehicle according to any one of claims 1 to 4, wherein the setting is changed to a combination of a channel number corresponding to a section and a broadcasting station. Vehicle position acquisition means includes Luz step to obtain the position of the vehicle,
Administrative district specifying means, based on the position of the vehicle acquired by the vehicle position acquisition unit, and Luz step to identify the administrative district in which the vehicle is positioned as current location administrative district,
It is administrative district change determination means, Luz step to determine whether the current position administrative district is changed,
If administrative district guiding means, said current position administrative district is determined to have been changed by the administrative district change determining means, Luz step to guide the current location administrative district after the change,
List acquisition means, and the absence step to get the channel list that identifies the combination of the broadcasting station and the channel number for each administrative district,
Channel setting means, on the basis of the current position administrative areas and said channel list, anda answering step to set the combination of the broadcasting station and the channel number corresponding to the current position administrative district,
The administrative district guidance means is a case where it is determined by the administrative district change judgment means that the current location administrative division has been changed, and is predetermined after the administrative district guidance means has previously guided the current location administrative division. When it is determined that the time has passed or the vehicle is traveling a predetermined distance or more, the changed current location administrative district is guided,
The channel setting means is a case in which it is determined that the current location administrative division has been changed by the administrative division change determination means, and a predetermined time has elapsed since the previous administrative district guidance means guided the current location administrative division. When the above has elapsed or when it is determined that the vehicle is traveling more than a predetermined distance, the setting is changed to a combination of a channel number and a broadcasting station corresponding to the changed current location administrative division. Broadcast receiving method. On the computer,
A vehicle position acquisition function for acquiring the position of the vehicle;
Based on the position of the vehicle acquired by the vehicle position acquisition function, an administrative division specifying function that specifies the administrative division in which the vehicle is located as a current location administrative division;
Administrative division change determination function for determining whether or not the current location administrative division has been changed,
When it is determined that the current location administrative division has been changed by the administrative division change determination function, an administrative division guidance function for guiding the changed current location administrative division;
A list acquisition function for acquiring a channel list specifying a combination of a channel number and a broadcasting station for each administrative division,
A channel setting function for setting a combination of a channel number and a broadcasting station corresponding to the current location administrative division based on the current location administrative division and the channel list;
A computer program that causes a processor to execute
The administrative district guidance function is a case where the administrative district change determination function determines that the current location administrative district has been changed, and has been predetermined since the administrative district guidance function was previously guided by the administrative district guidance function. When it is determined that the time has passed or the vehicle is traveling a predetermined distance or more, the changed current location administrative district is guided,
The channel setting function is a case in which it is determined that the current location administrative division has been changed by the administrative division change determination function, and a predetermined time has elapsed since the previous guidance for the current location administrative division was performed by the administrative division guidance function. When the above has elapsed or when it is determined that the vehicle is traveling more than a predetermined distance, the computer program is configured to change the setting to a combination of a channel number and a broadcasting station corresponding to the current administrative district after the change. .

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