JP6880185B2 - Broadcast receiving device and broadcasting receiving method - Google Patents

Description

The present invention relates to a technique for selecting a broadcasting station according to a reception state of a broadcasting wave that changes with the movement of a moving body.

Conventionally, a broadcast receiving device for receiving broadcast waves such as television broadcasts and radio broadcasts, which is provided on a moving body such as a vehicle, has been developed. In addition, a broadcast receiving device integrated with a navigation device that guides the traveling route of the vehicle has also been developed.
In the broadcast receiving device mounted on the mobile body or carried by the mobile body, the receiving state of the broadcast wave changes as the mobile body moves, and the receivable broadcasting station changes. Therefore, in the conventional broadcasting receiving device, a broadcasting station list showing a list of a plurality of broadcasting stations is presented to the user, and the broadcasting station to be viewed by the user is selected from the broadcasting station list. How to arrange a plurality of broadcasting stations in the broadcasting station list displayed by the broadcasting receiving device is determined by the ascending or descending order of the frequencies of the broadcasting waves, or by the ascending or descending order of the broadcasting station names.
As described above, the display order of the broadcasting station list is not determined in consideration of how long the receivable state of the broadcasting wave can be maintained. Therefore, there is a problem that the user may frequently reselect the broadcasting station due to the change in the reception state of the broadcasting wave due to the movement of the moving body.

As a technique for solving this problem, Patent Document 1 discloses a technique for presenting a reception state of a broadcast wave to a user as map information. The digital broadcast receiving terminal disclosed in Patent Document 1 displays a broadcast service area that can be received at the current position of the digital broadcast receiving terminal or around the current position as a service area map for each broadcasting station. By referring to the service area map, the user knows whether or not he / she is in a place where he / she can receive the broadcast wave of the broadcasting station he / she wants to watch, and if reception is not possible, where to move to receive the broadcast wave. Can be done.

Japanese Unexamined Patent Publication No. 2008-11562

When the broadcast receiving device described in Patent Document 1 described above is used, the user recognizes the currently receivable broadcasting station by referring to the service area map, and determines the receivable state of the broadcasting wave of each broadcasting station. It can be inferred whether it will continue to some extent. However, it is necessary for the user to compare the receivable state of the broadcast wave for each broadcasting station or the receivable state for each moving path of the moving body, and the user considers the movement of the moving body. There is a problem that the reception state of the broadcast wave of the broadcasting station cannot be easily recognized.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to present to a user the reception state of a broadcast wave of each broadcasting station in a easily recognizable manner in consideration of the movement of a moving body. And.

The broadcast receiving device according to the present invention has a reception state determination unit that determines the reception state of the receiving unit that receives the broadcast wave and selects a broadcast wave that can be viewed, and a broadcast wave receivable area selected by the reception state determination unit. When the moving body moves along the preset guide route, the information indicating the route length that can receive the broadcast wave selected in the guide route is calculated, and the information indicating the calculated route length and the information indicating the calculated route length are used. A list creation unit that creates a broadcast station list that is displayed in association with information indicating the broadcast station that broadcasts the selected broadcast wave, and an output control unit that controls the display of the broadcast station list created by the list creation unit. The preset guidance route is a route from the current position of the moving body to the destination of the moving body, and the list creation unit is in advance from the current position of the moving body among the preset guidance routes. The part of the route in the receivable area in the route up to the set distance is integrated, and the information indicating the route length in which the selected broadcast wave can be received is calculated .

According to the present invention, it is possible to easily and recognizablely present to the user the reception state of the broadcast wave of each broadcasting station in consideration of the movement of the moving body.

It is a block diagram which shows the structure of the broadcast receiving apparatus which concerns on Embodiment 1. FIG. 2A and 2B are diagrams showing a hardware configuration example of the broadcast receiving device according to the first embodiment. 3A and 3B are diagrams showing a receivable area of a broadcast wave read by a list creation unit of the broadcast receiving device according to the first embodiment. 4A, 4B, and 4C are diagrams showing an example of a broadcasting station list created by the list creating unit of the broadcasting receiving device according to the first embodiment. It is a flowchart which shows the creation process of the broadcasting station list of the broadcasting receiving apparatus which concerns on Embodiment 1. FIG. It is a flowchart which shows the creation process of the broadcasting station list of the broadcasting receiving apparatus which concerns on Embodiment 1. FIG. It is a block diagram which shows the structure of the broadcast receiving apparatus which concerns on Embodiment 2. FIG. It is a figure which shows an example of resetting the guidance path of the broadcast receiving apparatus which concerns on Embodiment 2. FIG. It is a flowchart which shows the operation of the route resetting part of the broadcast receiving apparatus which concerns on Embodiment 2. FIG.

Hereinafter, in order to explain the present invention in more detail, a mode for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1.
FIG. 1 is a block diagram showing a configuration of a broadcast receiving device 100 according to the first embodiment.
The broadcast receiving device 100 includes a position information acquisition unit 101, an operation information acquisition unit 102, a route setting unit 103, a map information storage unit 104, a first output control unit 105, a reception unit 106, and a second output control unit (output control). A unit) 107, a reception state determination unit 108, a list creation unit 109, a broadcasting station information storage unit 110, and a user data storage unit 111.
Further, an input device 200 and an output device 300 are connected to the broadcast receiving device 100.

The input device 200 is composed of, for example, a touch panel, a button, or the like, and receives input of a user operation. The input device 200 outputs the received operation information of the user operation to the operation information acquisition unit 102 of the broadcast receiving device 100.
The output device 300 is composed of, for example, a display 301, a speaker 302, and the like, and displays video and outputs audio. The output device 300 displays video on the display 301 and outputs audio from the speaker 302 based on the control information input from the first output control unit 105 and the second output control unit 107.

In the following, the case where the broadcast receiving device 100 is mounted on a vehicle will be described as an example, but the broadcast receiving device 100 is not limited to the vehicle and can be mounted on various mobile bodies such as a mobile terminal carried by a moving user. is there.

The position information acquisition unit 101 acquires the position information of the own vehicle equipped with the broadcast receiving device 100. The position information acquisition unit 101 receives radio waves including the position information of its own vehicle from satellites such as GPS (Global Positioning System) or GLONASS (Global Navigation Satellite System), and performs demodulation and decoding. The position information acquisition unit 101 outputs the acquired position information of the own vehicle to the route setting unit 103.

The operation information acquisition unit 102 acquires the operation information of the user operation input via the input device 200. The operation information acquisition unit 102 acquires operation information related to a route and operation information related to a broadcasting station as operation information for user operations.
The operation information related to the route includes information for instructing the start of the route search, information for designating the destination, information for designating the guide route from the route search result displayed on the output device 300, and the like. The operation information acquisition unit 102 outputs the operation information related to the route to the route setting unit 103.
On the other hand, the operation information about a broadcasting station is information indicating the start of a search for a broadcasting station that broadcasts a receivable broadcast wave (hereinafter referred to as a search for a broadcasting station), and a list of broadcasting stations showing a list of broadcasting stations. Information indicating the creation conditions, information indicating the display conditions of the broadcasting station list, information for selecting a broadcasting station from the broadcasting station list displayed on the output device 300, and the like.
Here, the condition for creating the broadcasting station list is a condition indicating whether to create the broadcasting station list based on the receivable distance of the broadcasting wave or the receivable time of the broadcasting wave. .. The display condition of the broadcasting station list indicates the number of broadcasting stations to be displayed in the broadcasting station list, and whether the broadcasting station list is displayed in ascending order or descending order of the distance or time in which the broadcast wave can be received. It is a condition. The operation information acquisition unit 102 outputs the operation information related to the broadcasting station to the reception unit 106 and the reception state determination unit 108, and further stores the operation information in the user data storage unit 111.

The route setting unit 103 is based on the position information of the own vehicle acquired by the position information acquisition unit 101, the information for designating the destination acquired by the operation information acquisition unit 102, and the map information stored in the map information storage unit 104. Search the route from the current position of the own vehicle to the destination. The route setting unit 103 presents information indicating the searched route to the user via the first output control unit 105 and the output device 300. When the user inputs a user operation that specifies a desired route from the presented search route via the input device 200, the operation information of the user operation is input to the route setting unit 103 via the operation information acquisition unit 102. Will be done. The route setting unit 103 sets the route specified by the user as the guide route. The route setting unit 103 outputs information indicating the set guide route to the first output control unit 105 and the list creation unit 109.
The map information storage unit 104 stores map information that the route setting unit 103 refers to when searching for a route.

The first output control unit 105 displays the information of the searched route on the display 301 of the output device 300 based on the information indicating the searched route input from the route setting unit 103, and outputs the sound from the speaker 302. Control for. Further, the first output control unit 105 displays on the display 301 an image for supporting the movement of the moving body along the guide route based on the information indicating the guide route input from the route setting unit 103. Then, control is performed to output the sound from the speaker 302.

The receiving unit 106 includes a first receiving unit 106a, a second receiving unit 106b, and a third receiving unit 106c.
The first receiving unit 106a receives a digital television transmission such as DVBT (Digital Video Broadcasting-Terrestrial) and demodulates it to TS (Transport streaming).
The second receiving unit 106b receives a digital radio transmission such as DAB (Digital Audio Broadcasting) and demodulates it to TS.
The third receiving unit 106c receives FM and AM transmissions and converts them into an intermediate frequency (IF).
The first receiving unit 106a, the second receiving unit 106b, and the third receiving unit 106c receive information indicating the processing of receiving the broadcast wave of the selected broadcasting station and the reception state of the broadcasting wave of each broadcasting station. Is processed and processed. Here, as information indicating the reception state of the broadcast wave of each broadcasting station, information indicating the reception state of the broadcasting station such as the electric field strength, noise level, and bit error rate (BER) of the broadcasting wave of each broadcasting station. To get. The configuration in which the receiving unit 106 includes the first to third receiving units is an example, and the number of configurations of the receiving unit 106 and the broadcast wave received by each configuration can be appropriately set.

When the operation information acquisition unit 102 inputs information for selecting a broadcasting station from the displayed list of broadcasting stations, the first receiving unit 106a, the second receiving unit 106b, and the third receiving unit 106c receive information. The video signal and audio signal of the selected broadcasting station are output to the second output control unit 107. Further, the first receiving unit 106a, the second receiving unit 106b, and the third receiving unit 106c are used for broadcasting stations such as the electric field strength of the broadcasting wave, the noise level of the broadcasting wave, and the code error rate of the broadcasting wave of digital broadcasting. Information indicating the reception status of is output to the reception status determination unit 108.
The second output control unit 107 outputs at least one of the video information and the audio information of the broadcast wave of the selected broadcasting station to the output device 300 based on the video signal and the audio signal input from the reception unit 106. Control to output.

When the operation information acquisition unit 102 inputs the information instructing the start of the search of the broadcasting station, the reception state determination unit 108 is based on the information indicating the reception state of the broadcast wave of each broadcasting station input from the reception unit 106. Then, it is determined whether or not the broadcast wave of each broadcasting station can be viewed at present. The reception state determination unit 108 selects a broadcasting station that can be viewed at the current position of the own vehicle based on the determination result. The reception status determination unit 108 outputs the selected broadcasting station to the list creation unit 109. The reception status determination unit 108 ends the determination process when information indicating that a broadcasting station has been selected is input from the operation information acquisition unit 102.

In addition to the method of searching for a broadcasting station triggered by a user's operation as described above, the reception state determination unit 108 is a method of searching for a broadcasting station capable of receiving a broadcast wave by separately providing a receiving unit for searching. (Hereinafter referred to as back search) is also available. In this case, the reception state determination unit 108 executes a back search to select a broadcasting station that can be viewed at the current position of the own vehicle. The reception status determination unit 108 outputs the selected broadcasting station to the list creation unit 109. When the search waiting time elapses, the reception state determination unit 108 executes the back search again to select a broadcasting station. The search waiting time is a search interval, which is a time set by the system for each broadcast.
Details of the reception state determination unit 108 will be described later.

When the guide route is not set by the route setting unit 103, the list creation unit 109 creates a broadcasting station list displaying a list of broadcasting stations selected by the reception state determination unit 108. The list creation unit 109 displays a list of selected broadcasting stations according to the display conditions of the broadcasting station list stored in the user data storage unit 111.

On the other hand, when the guidance route is set by the route setting unit 103, the list creation unit 109 sets the broadcasting station information storage unit 110 when the information indicating the broadcasting station selected by the reception state determination unit 108 is input. Refer to it and read out the receivable area of the broadcast wave of the selected broadcasting station. The list creation unit 109 refers to the read receivable area and calculates information on the route length that the reception unit 106 can receive the broadcast wave of the selected broadcasting station in the guidance route set by the route setting unit 103. .. Here, the information on the path length that can receive the broadcast wave includes the distance that the broadcast wave can be received and traveled (hereinafter referred to as the receivable distance) and the time that the broadcast wave can be received and traveled (hereinafter, can be received). It is at least one of (called time), the ratio of receivable distance, and the ratio of receivable time. What kind of information the list creation unit 109 calculates as information regarding the route length is determined based on the conditions for creating the broadcasting station list stored in the user data storage unit 111. The list creation unit 109 displays the information about the route length of each broadcasting station calculated according to the display condition of the broadcasting station list stored in the user data storage unit 111 in association with the information indicating each broadcasting station. To create.

The list creation unit 109 outputs the created broadcasting station list to the second output control unit 107. The details of the process of calculating the reception status of each broadcasting station of the list creating unit 109 and the details of the processing of creating the broadcasting station list will be described later.

The second output control unit 107 controls to display the broadcasting station list input from the list creation unit 109 on the display 301 of the output device 300.

The broadcasting station information storage unit 110 stores information indicating the position of the transmission tower of each broadcast, the transmission power, and the directivity of the antenna. Further, the broadcasting station information storage unit 110 receives broadcast waves of each broadcasting station set based on the reception sensitivity of the receiver (not shown) of the broadcasting receiving device 100 and the gain of the antenna mounted on the own vehicle. Stores information indicating possible areas. By setting the reception sensitivity of the receiver of the broadcast receiving device 100 mounted on each vehicle and the gain of the antenna mounted on each vehicle, an accurate receivable area is set for each vehicle. The receivable area of each vehicle may be set inside the broadcast receiving device 100 and stored in the broadcasting station information storage unit 110, or outside the broadcasting receiving device 100 and stored in the broadcasting station information storage unit 110. You may.

The user data storage unit 111 stores the broadcasting station list creation condition and the broadcasting station list display condition acquired by the operation information acquisition unit 102.

In the block diagram shown in FIG. 1, the broadcast receiving device 100 includes a position information acquisition unit 101 for setting a guide route, a map information storage unit 104, a route setting unit 103, and a first output control unit 105. Indicated. Instead of this, the above configuration for setting the guide route may be provided by an external device other than the broadcast receiving device 100. In that case, the guidance route is set in the external device, and the guidance route information is input from the external device to the broadcast receiving device 100. The same applies to the second embodiment.

Next, a hardware configuration example of the broadcast receiving device 100 will be described.
2A and 2B are diagrams showing a hardware configuration example of the broadcast receiving device 100.
Location information acquisition unit 101, operation information acquisition unit 102, route setting unit 103, first output control unit 105, reception unit 106, second output control unit 107, reception status determination unit 108, and list creation in the broadcast reception device 100. Each function of unit 109 is realized by a processing circuit. That is, the broadcast receiving device 100 includes a processing circuit for realizing each of the above functions. The processing circuit may be a processing circuit 100a which is dedicated hardware as shown in FIG. 2A, or may be a processor 100b which executes a program stored in the memory 100c as shown in FIG. 2B. Good.

As shown in FIG. 2A, the position information acquisition unit 101, the operation information acquisition unit 102, the route setting unit 103, the route guidance processing unit, the first output control unit 105, the reception unit 106, the second output control unit 107, and the reception When the state determination unit 108 and the list creation unit 109 are dedicated hardware, the processing circuit 100a may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, or an ASIC (Application Specific Integrated Circuit). , FPGA (Field-programmable Gate Array), or a combination of these. Position information acquisition unit 101, operation information acquisition unit 102, route setting unit 103, route guidance processing unit, first output control unit 105, reception unit 106, second output control unit 107, reception status determination unit 108, and list creation The functions of each part of unit 109 may be realized by a processing circuit, or the functions of each part may be collectively realized by one processing circuit.

As shown in FIG. 2B, the position information acquisition unit 101, the operation information acquisition unit 102, the route setting unit 103, the route guidance processing unit, the first output control unit 105, the reception unit 106, the second output control unit 107, and the reception When the state determination unit 108 and the list creation unit 109 are processors 100b, the functions of each unit are realized by software, firmware, or a combination of software and firmware. The software or firmware is described as a program and stored in the memory 100c. By reading and executing the program stored in the memory 100c, the processor 100b reads and executes the position information acquisition unit 101, the operation information acquisition unit 102, the route setting unit 103, the route guidance processing unit, the first output control unit 105, and the reception. Each function of the unit 106, the second output control unit 107, the reception state determination unit 108, and the list creation unit 109 is realized. That is, the position information acquisition unit 101, the operation information acquisition unit 102, the route setting unit 103, the route guidance processing unit, the first output control unit 105, the reception unit 106, the second output control unit 107, the reception state determination unit 108, and the like. The list creation unit 109 includes a memory 100c for storing a program in which each step shown in FIGS. 5A, 5B, and 8 described later will be executed as a result when executed by the processor 100b. Further, these programs include a position information acquisition unit 101, an operation information acquisition unit 102, a route setting unit 103, a route guidance processing unit, a first output control unit 105, a reception unit 106, a second output control unit 107, and reception. It can also be said that the computer is made to execute the procedure or method of the state determination unit 108 and the list creation unit 109.

Here, the processor 100b is, for example, a CPU (Central Processing Unit), a processing device, an arithmetic unit, a processor, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like.
The memory 100c may be, for example, a non-volatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), and EPROM (Electrically EPROM). However, it may be a magnetic disk such as a hard disk or a flexible disk, or an optical disk such as a mini disk, a CD (Compact Disc), or a DVD (Digital Versatile Disc).

The position information acquisition unit 101, the operation information acquisition unit 102, the route setting unit 103, the route guidance processing unit, the first output control unit 105, the reception unit 106, the second output control unit 107, the reception state determination unit 108, and the like. For each function of the list creation unit 109, a part may be realized by dedicated hardware and a part may be realized by software or firmware. As described above, the processing circuit 100a in the broadcast receiving device 100 can realize each of the above-mentioned functions by hardware, software, firmware, or a combination thereof.

Next, the details of the reception state determination unit 108 and the list creation unit 109 will be described.
First, the details of the reception state determination unit 108 will be described.
When selecting a broadcast station that can be viewed, the reception status determination unit 108 determines whether the broadcast wave of each broadcast station can be satisfactorily viewed at the current location based on the determination results of the following three conditions. To do.
First condition: Is the radio field intensity of the broadcast wave received by the receiving unit 106 equal to or higher than a preset specified value? Second condition: The noise level of the broadcast wave received by the receiving unit 106 is a preset specified value. Is it the following? Third condition: Whether the broadcast wave of the digital broadcast received by the receiving unit 106 can be decoded, for example, whether the BER is equal to or less than a preset specified value.

When the broadcast wave received by the receiving unit 106 is a digital broadcast, the receiving state determination unit 108 uses the determination results of the first condition, the second condition, and the third condition.
On the other hand, when the broadcast wave received by the receiving unit 106 is not a digital broadcast, the receiving state determination unit 108 uses the determination results of the first condition and the second condition.
The first condition, the second condition, and the third condition described above are examples, and some conditions may be excluded from the determination or new conditions may be added.
When the reception state determination unit 108 determines, for example, that the broadcast wave of the digital broadcast received by the reception unit 106 satisfies the above-mentioned first to third conditions, the broadcast wave of each broadcasting station is currently broadcast. It is judged that the viewing is good at the point of.

Next, the details of the list creation unit 109 will be described with reference to FIG.
3A and 3B are diagrams showing a receivable area of the broadcast wave read by the list creation unit 109 of the broadcast receiving device 100 according to the first embodiment. FIG. 3A shows a case where a broadcasting station list is created for the entire guidance route, and FIG. 3B shows a case where a broadcasting station list is created for a part of the guidance route (hereinafter, referred to as a partial guidance route).
The receivable area A shown in FIGS. 3A and 3B is the reception of the first broadcast wave determined by the reception state determination unit 108 to be satisfactorily viewable at the current point (current position P of the own vehicle). Indicates a possible area. Further, the guide route R shown in FIGS. 3A and 3B is a guide route set by the route setting unit 103, the start point is the current position P of the own vehicle, and the end point is the destination Q. The point S shown in FIG. 3B is a point on the guide path R and located at a preset distance (for example, 30 km or the like) from the current position P of the own vehicle. The point S can be set by the user. This is a point set when the user desires to select a broadcasting station that can be viewed well on a part of the guidance route, for example, a short-distance route.

A case where the list creation unit 109 creates a broadcasting station list of the guide route R will be described with reference to FIG. 3A.
At the current position P of the own vehicle, the broadcast receiving device 100 is in a state in which the broadcast wave of the first broadcasting station having the receivable area A can be satisfactorily viewed. The list creation unit 109 integrates the portion of the guide path R that is located in the receivable area A, and calculates the receivable distance of the broadcast wave of the first broadcasting station on the guide path R. In FIG. 3A, the receivable distance of the broadcast wave of the first broadcasting station on the guidance path R is the current position P of the own vehicle and the point Qa where the boundary line of the receivable area A and the guidance path R intersect. It is the distance of the connecting partial guide path r.

Further, the list creation unit 109 divides the calculated receivable distance by the traveling speed assumed in advance for the partial guidance route r, and sets the estimated travel time of the partial guidance route r to receive the broadcast wave of the first broadcasting station. Calculated as possible time.
Further, the list creation unit 109 divides the calculated receivable distance by the total distance of the guide route R to calculate the ratio of the receivable distance. Similarly, the list creation unit 109 divides the calculated receivable time by the estimated travel time of the entire guide route R to calculate the ratio of the receivable time.
The list creation unit 109 is at least one of the receivable distance, the receivable time, the receivable distance ratio, and the receivable time ratio, based on the conditions for creating the broadcasting station list stored in the user data storage unit 111. Is calculated.

The list creation unit 109 can satisfactorily view the above-mentioned calculation process at the current position P of the own vehicle (for example, a second broadcasting station, a third broadcasting station, ... nth broadcasting station). , Run for all. The list creation unit 109 associates at least one of the calculated receivable distance, receivable time, receivable distance ratio, or receivable time ratio of all broadcasting stations with information indicating each broadcasting station. And create a list of broadcasting stations. The list creation unit 109 refers to the display conditions of the broadcasting station list stored in the user data storage unit 111, the number of broadcasting stations to be displayed in the list, and whether to display each broadcasting station in descending order or ascending order of the result. Etc. are decided. The list creation unit 109 creates a list of broadcasting stations that matches the determined conditions.

Next, a case where the list creation unit 109 creates a broadcasting station list of the guide route R will be described with reference to FIG. 3B.
At the current position P of the own vehicle, the broadcast receiving device 100 is in a state in which the broadcast wave of the first broadcasting station having the receivable area A can be satisfactorily viewed. The list creation unit 109 integrates the portion of the route located in the receivable area A of the partial guide routes T from the current position P to the point S of the own vehicle, and the first broadcasting station on the partial guide route T. Calculate the receivable distance of the broadcast wave of. In FIG. 3B, the receivable distance of the partial guide path T is the total distance of the partial guide path T.

The list creation unit 109 divides the calculated receivable distance by the traveling speed assumed in advance for the partial guidance route T, and divides the estimated travel time of the partial guidance route T by the receivable time of the broadcast wave of the first broadcasting station. Calculate as. Further, the list creation unit 109 divides the calculated receivable distance by the total distance of the partial guide path T to calculate the ratio of the receivable distance. Similarly, the list creation unit 109 divides the calculated receivable time by the estimated travel time of the entire partial guide route T to calculate the ratio of the receivable time. In the case of FIG. 3B, the ratio of the receivable distance and the ratio of the receivable time of the partial guide path T are calculated to be 100%.
The list creation unit 109 performs the same processing as the above-mentioned processing, and includes at least one of the calculated receivable distance, receivable time, receivable distance ratio, or receivable time of all the broadcasting stations, and the broadcasting station. Create a list of broadcasting stations associated with the information indicating.

4A, 4B, and 4C are diagrams showing an example of a broadcasting station list created by the list creating unit 109 of the broadcast receiving device 100 according to the first embodiment. FIG. 4A shows an example of a broadcasting station list showing the receivable distance in descending order, FIG. 4B shows an example of a broadcasting station list showing the receivable time in descending order, and FIG. 4C shows the ratio of the receivable distance or reception. An example of a broadcasting station list showing the ratio of possible time in descending order is shown.
4A to 4C show a display example of the display 300a of the output device 300.
In the display area 300b of the broadcasting station list of the display 300a, the information 300c indicating the broadcasting station and the information 300d regarding the corresponding receivable route length are displayed in association with each other. In the examples of FIGS. 4A to 4C, the frequency band of the broadcast wave of each broadcasting station is shown as the information 300c indicating the broadcasting station. Further, in the display area 300b, for example, the top five broadcasting stations are displayed according to the number of broadcasting stations to be displayed in the list (for example, "5") specified in the display conditions of the list.

Next, the operation of the broadcast receiving device 100 will be described.
5A and 5B are flowcharts showing a process of creating a broadcasting station list of the broadcasting receiving device 100 according to the first embodiment. Note that FIG. 5A is a flowchart showing a process when the broadcast receiving device 100 searches for a broadcasting station triggered by a user's operation. Further, FIG. 5B is a flowchart showing a process when the broadcast receiving device 100 executes a back search to search for a broadcasting station.
As a premise that the processing shown in the flowchart of FIG. 5 is performed, it is assumed that the receiving unit 106 of the broadcast receiving device 100 is constantly receiving the broadcast wave. Further, it is assumed that the route setting unit 103 searches for a route and sets a guide route based on a user's instruction.
Further, in the flowcharts of FIGS. 5A and 5B, the list creation unit 109 calculates the ratio of the receivable distance from the receivable distance based on the list creation condition stored in the user data storage unit 111, and the calculated receivability is possible. The case of displaying the ratio of the distance will be described as an example.

First, with reference to FIG. 5A, a process when the broadcast receiving device 100 searches for a broadcasting station by using a user's operation as a trigger will be described.
When the operation information acquisition unit 102 acquires the information instructing the start of the search for the broadcasting station, the operation information acquisition unit 102 instructs the reception state determination unit 108 to search for the broadcasting station (step ST1). When the search instruction of the broadcasting station is input in step ST1, the reception state determination unit 108 can be viewed at the current position of the own vehicle based on the information indicating the reception state of each broadcasting station input from the reception unit 106. Select a broadcasting station (step ST2). The reception status determination unit 108 outputs the broadcasting station selected in step ST2 to the list creation unit 109.

The list creation unit 109 determines whether or not the guide route is set in the route setting unit 103 (step ST3). When the guidance route is not set (step ST3; NO), the list creation unit 109 creates a broadcasting station list based on the broadcasting station selected in step ST2 (step ST4), and the second output control unit 107 Output to. The second output control unit 107 controls to display the broadcasting station list created in step ST4 on the display 301 of the output device 300. (Step ST5).

On the other hand, when the guidance route is set (step ST3; YES), the list creation unit 109 acquires the broadcast wave receivable area of the broadcasting station selected in step ST2 from the broadcasting station information storage unit 110 (step). ST6). The list creation unit 109 calculates the receivable distance of the set guide route from the receivable area of the broadcast wave of each broadcasting station acquired in step ST6 and the guide route set by the route setting unit 103 (step). ST7). The list creation unit 109 calculates the ratio of the receivable distance in the set guide route from the receivable distance calculated in step ST7 (step ST8). The list creation unit 109 determines whether or not the ratio of the receivable distance and the receivable distance has been calculated for all the broadcasting stations selected in step ST2 (step ST9). If the calculation has not been performed for all the selected broadcasting stations (step ST9; NO), the list creation unit 109 returns to the process of step ST6 and repeats the above-described process.

On the other hand, when the calculation is performed for all the selected broadcasting stations (step ST9; YES), the list creation unit 109 refers to the list display condition stored in the user data storage unit 111 and calculates in step ST8. The list is rearranged according to the ratio of the receivable distance to create a broadcasting station list (step ST10). The list creation unit 109 outputs the broadcasting station list created in step ST10 to the second output control unit 107. The second output control unit 107 controls to display the broadcasting station list created in step ST10 on the display 301 of the output device 300 (step ST11).

After that, the reception state determination unit 108 determines whether or not a preset waiting time (for example, 60 seconds) has elapsed from the process of selecting the broadcasting station in step ST2 (step ST12). If the preset waiting time has not elapsed (step ST12; NO), the reception state determination unit 108 continues the determination process in step ST12. On the other hand, when the preset waiting time has elapsed (step ST12; YES), the reception state determination unit 108 determines whether or not the broadcasting station has been selected (step ST13). When a broadcasting station is selected (step ST13; YES), the flowchart ends the process. On the other hand, when the broadcasting station is not selected (step ST13; NO), the flowchart returns to the process of step ST2 and repeats the above-described process.

Next, with reference to FIG. 5B, a process when the broadcast receiving device 100 executes a back search to search for a broadcasting station will be described.
In the following, the same steps as those in the flowchart of FIG. 5A are designated by the same reference numerals as those used in FIG. 5A, and the description thereof will be omitted.
When the broadcast receiving device 100 starts searching for a broadcasting station (step ST1a), the reception status determination unit 108 sets the current position of the own vehicle based on the information input from the reception unit 106 indicating the reception status of each broadcasting station. Select a broadcasting station that can be viewed (step ST2a).

After that, when the process of creating the broadcasting station list is performed and the control for displaying the broadcasting station list on the display 301 of the output device 300 is performed (step ST5 or step ST11), the reception state determination unit 108 is set. It is determined whether or not the search waiting time has elapsed (step ST12a). If the set search waiting time has not elapsed (step ST12a; NO), the reception state determination unit 108 continues the determination process in step ST12a. On the other hand, when the set search waiting time has elapsed (step ST12a; YES), the flowchart returns to step ST1a, and the broadcast receiving device 100 starts the search for the broadcasting station again.

In the flowcharts of FIGS. 5A and 5B described above, a case where the receiving unit 106 calculates the receivable distance as the information regarding the path length in which the broadcast wave can be received in the guide path is shown as an example, but the information regarding the path length is shown. , Receivable distance, receivable time, receivable distance ratio, or receivable time ratio.

As described above, according to the first embodiment, the reception state determination unit 108 that determines the reception state of the reception unit 106 that receives the broadcast wave and selects the broadcast wave that can be viewed, and the selected broadcast wave. With reference to the receivable area, when a moving body moves along a preset guide route, information indicating the route length that can receive the broadcast wave selected in the guide route is calculated, and the calculated route length is indicated. A list creation unit 109 that creates a broadcast station list that displays information in association with information indicating a broadcast station that broadcasts the selected broadcast wave, and a second that controls the display of the created broadcast station list. Since it is configured to include the output control unit 107, the user can select a broadcasting station that broadcasts a broadcasting wave that can be viewed for a longer time in the set guidance route. As a result, it is possible to suppress the frequent occurrence of a state in which the broadcast wave cannot be received while moving along the guidance route, and it is possible to save the user the trouble of frequently executing the broadcast station search.

Further, according to the first embodiment, the list creation unit 109 calculates information indicating a route length capable of receiving the selected broadcast wave by the receiving unit 106 for the entire preset guide route. Alternatively, the list creation unit 109 provides information indicating the route length capable of receiving the selected broadcast wave by the reception unit 106 for a part of the routes including the current position of the moving body among the preset guidance routes. Since it is configured to calculate, the user decides whether to select a broadcasting station that considers the movement of the entire guidance route or a broadcasting station that considers the movement of a part of the route close to the current position of the moving body. Can be selected. This makes it possible to present a list of broadcasting stations according to the user's preference.

Further, according to the first embodiment, since the reception state determination unit 108 is configured to select the broadcast wave that can be received at the current position of the moving body as the broadcast wave that can be viewed, the selected broadcast is moved. It is possible to suppress the state of being unable to receive at the current position of the body.

Further, according to the first embodiment, the list creation unit 109 sets at least one of the broadcast wave receivable distance and the broadcast wave receivable time and the information indicating the broadcast wave broadcasting station. Since it is configured to create the associated broadcasting station list, the user can easily recognize at least one of the distance and the time during which the broadcasting wave can be received on the guide path.

Further, according to the first embodiment, the list creation unit 109 sets the broadcasting station of the broadcasting wave with at least one of the ratio of the broadcast wave receivable distance and the ratio of the broadcast wave receivable time. Since it is configured to create a broadcasting station list associated with the indicated information, the user can easily recognize the ratio at which the broadcasting wave can be received on the guidance route.

Embodiment 2.
In the second embodiment, a configuration is shown in which the guidance route is reset with reference to the reception area of the broadcast wave.
FIG. 6 is a block diagram showing a configuration of the broadcast receiving device 100A according to the second embodiment.
The broadcast receiving device 100A according to the second embodiment is configured by adding the route resetting unit 112 to the broadcast receiving device 100 of the first embodiment shown in FIG. In the following, the same or corresponding parts as the components of the broadcast receiving device 100 according to the first embodiment are designated by the same reference numerals as those used in the first embodiment, and the description thereof will be omitted or simplified.

FIG. 7 is a diagram showing an example of resetting the guide path of the broadcast receiving device 100A according to the second embodiment.
In FIG. 7, the receivable area B indicates the receivable area of the broadcast wave selected at the current position P of the own vehicle. The guidance route Ra is a guidance route set by the route setting unit 103 from the current position P of the own vehicle to the destination Q. The guidance route Rb is a new guidance route from the current position P of the own vehicle to the destination Q calculated by the route resetting unit 112.

The configuration of the route resetting unit 112 will be described with reference to FIGS. 6 and 7.
The route resetting unit 112 reads the receivable area B of the broadcast wave selected at the current position P of the own vehicle from the broadcast station information storage unit 110. The route resetting unit 112 refers to the map information stored in the map information storage unit 104, and broadcasts in the read receivable area B for a longer distance or a longer time than the currently set guide route Ra. A route that can receive waves and satisfies a preset reroute condition is calculated as a new guide route Rb.
Here, the reroute condition is, for example, a condition preset by the user, such as "the mileage may be extended by 10 km from the currently set guide route" or "from the currently set guide route". However, the traveling time may be extended by 5 minutes. "
The route resetting unit 112 subtracts the estimated travel distance of the currently set guide route Ra from the estimated travel distance of the new guide route Rb, and when traveling on the guide route Rb, the route resetting unit 112 is more than traveling on the guide route Ra. , Calculate how much the mileage will be extended.

Next, the route resetting unit 112 integrates the portion of the guide path Rb that is located in the receivable area B, and determines the receivable distance of the broadcast wave of the broadcasting station being selected in the guide path Rb. calculate. The route resetting unit 112 subtracts the receivable distance of the currently set guide route Ra calculated by the list creation unit 109 from the calculated receivable distance of the new guide route Rb, and travels on the guide route Rb. It is calculated how much the receivable distance is extended as compared with the case of traveling on the guide route Ra.

The route resetting unit 112 determines whether or not the mileage extended when traveling on the new guidance route Rb is less than the receivable distance extended when traveling on the new guidance route Rb. When it is determined that the extended mileage is less than the extended receivable distance, the route resetting unit 112 performs a process of resetting a new guide route as a guide route. On the other hand, if it is determined that the extended mileage is not less than the extended receivable distance, the guide route is not reset.

The route resetting unit 112 outputs information indicating a new guidance route to the first output control unit 105 and presents it to the user as a process of resetting the guidance route. Further, the route resetting unit 112 resets the guide route when an instruction to reset the guide route is input. The route resetting unit 112 outputs information indicating the reset guide route to the first output control unit 105.
The first output control unit 105 displays on the display 301 an image for supporting the movement of the moving body along the guide route based on the information indicating the guide route input from the route reset unit 112. Control is performed to output sound from the speaker 302.
In the above, the case where the route resetting unit 112 sets a new guide route based on the receivable distance is shown as an example, but the route resetting unit 112 at least either the receivable distance or the receivable time. A new guide route is set based on one of them.

Next, a hardware configuration example of the broadcast receiving device 100A will be described. The description of the same configuration as that of the first embodiment will be omitted.
The route resetting unit 112 in the broadcast receiving device 100A is a processor 100b that executes a program stored in the processing circuit 100a shown in FIG. 2A or the memory 100c shown in FIG. 2B.

Next, the process of resetting the guide route of the broadcast receiving device 100A will be described.
FIG. 8 is a flowchart showing the operation of the route resetting unit 112 of the broadcast receiving device 100A according to the second embodiment.
As a premise of performing the processing shown in the flowchart of FIG. 8, it is assumed that the receiving unit 106 of the broadcasting receiving device 100A is receiving the broadcasting wave of a certain broadcasting station.

When the operation information requesting the resetting of the guidance route is input from the operation information acquisition unit 102 (step ST21), the route resetting unit 112 acquires the information of the currently set guidance route from the route setting unit 103. (Step ST22). Further, the route resetting unit 112 acquires the receivable area of the broadcast wave of the currently selected broadcasting station from the broadcasting station information storage unit 110 (step ST23). The route resetting unit 112 refers to the map information stored in the map information storage unit 104, and is longer than the currently set guide route acquired in step ST22 within the receivable area acquired in step ST23. The distance and a new guide route capable of receiving the broadcast wave are calculated (step ST24).

The route resetting unit 112 determines whether or not a new guide route has been calculated (step ST25). If a new route is not calculated (step ST25; NO), the route resetting unit 112 ends the process. On the other hand, when a new route is calculated (step ST25; YES), the route resetting unit 112 travels on the guide route acquired in step ST22 when traveling on the new guide route calculated in step ST24. Also, the extended mileage is calculated (step ST26).

In addition, the route resetting unit 112 calculates the receivable distance of the broadcast wave of the currently selected broadcasting station when traveling on the new guidance route calculated in step ST24 (step ST27). When the route resetting unit 112 travels on the new guide route calculated in step ST24 from the receivable distance calculated in step ST27 and the receivable distance in the current guide route acquired in step ST22, the step The receivable distance to be extended is calculated rather than traveling on the guide route acquired in ST22 (step ST28).

The route resetting unit 112 determines whether or not the extended mileage calculated in step ST26 is less than the extended receivable distance calculated in step ST28 (step ST29). When the extended mileage calculated in step ST26 is not less than the extended receivable distance (step ST29; NO), the route resetting unit 112 ends the process. On the other hand, when the extended mileage calculated in step ST26 is less than the extended receivable distance (step ST29; YES), the route resetting unit 112 uses the new guide route calculated in step ST24. It is presented to the user via the first output control unit 105 (step ST30).

The route resetting unit 112 determines whether or not an instruction for resetting the presented new guide route as a guide route has been input from the operation information acquisition unit 102 (step ST31). When an instruction to reset a new guide route as a guide route is input (step ST31; YES), the route resetting unit 112 resets the new guide route calculated in step ST24 as a guide route (step ST32). ), The information of the guide route is output to the first output control unit 105. The first output control unit 105 displays the information of the guidance route reset in step ST32 on the display 301 of the output device 300, controls the sound output from the speaker 302 (step ST33), and ends the process. To do. On the other hand, when the instruction to reset the new guide route as the guide route is not input (step ST31; NO), the route reset unit 112 ends the process.

If "YES" is determined in the determination process of step ST25 and a plurality of new guide routes are calculated, the processes of steps ST26 to ST29 described above are performed for the plurality of new routes. Further, when there are a plurality of guide routes determined to be "YES" in the determination process of step ST29, the route resetting unit 112 has the largest difference between, for example, the extension amount of the receivable distance and the extension amount of the mileage. Present a large route to the user.

Further, in the flowchart of FIG. 8 described above, an example is shown in which the route resetting unit 112 determines whether or not the extension amount of the mileage is less than the extension amount of the receivable distance. It may be determined whether or not the amount is less than the extension amount of the receivable time. Further, the route resetting unit 112 may determine whether or not the extension amount of the mileage and the extension amount of the mileage are less than the extension amount of the receivable distance and the extension amount of the receivable time.

As described above, according to the second embodiment, the receiving unit 106 can receive the broadcast wave being selected or the broadcast wave being selected within the reception area of the broadcast wave being selected. Since it is configured to include a route resetting unit 112 that resets a new guide route for extending at least one of the times as a guide route for the moving body, the broadcast wave currently selected by the receiving unit can be selected. The guidance route that can be viewed for a longer time can be reset.

Further, according to the second embodiment, the route resetting unit 112 sets the moving distance or the moving time of the moving body to be extended when the moving body moves on the new guide path, and the moving body follows the new guide path. When the receivable distance or the receivable time is less than the extended receivable distance when the move, the new guide route is reset as the guide route of the moving body, or when the moving body moves on the new guide route. If the extended travel distance and travel time of the moving body is less than the extended receivable distance and receivable time when the moving body moves along the new guidance route, the new guidance route is guided by the moving body. Since it is configured to be reconfigured as a route, it is possible to prevent the travel distance or travel time from exceeding the receivable distance or receivable time, or the travel distance and travel time are greater than the receivable distance and receivable time. Can be suppressed from exceeding. As a result, the guidance route can be reset with priority given to the extension of the reception state of the broadcast wave.

The broadcast receiving devices 100 and 100A shown in the first and second embodiments described above are in-vehicle devices such as a navigation device mounted on a moving body such as a vehicle, and portable devices that can be attached to a moving body such as a vehicle. It can be applied to mobile terminals such as tablets.

In addition to the above, the present invention allows any combination of embodiments, modifications of any component of each embodiment, or omission of any component of each embodiment within the scope of the invention. Is.

The broadcast receiving device according to the present invention is a device mounted on a mobile body, and can be applied to a device or the like whose reception state of broadcast waves changes with the movement of the mobile body.

100, 100A Broadcast receiver, 101 position information acquisition unit, 102 operation information acquisition unit, 103 route setting unit, 104 map information storage unit, 105 first output control unit, 106 reception unit, 106a first reception unit, 106b 2nd receiving unit, 106c 3rd receiving unit, 107 2nd output control unit, 108 reception status determination unit, 109 list creation unit, 110 broadcasting station information storage unit, 111 user data storage unit, 112 route resetting unit ..

Claims (10)

A reception status determination unit that determines the reception status of the reception unit that receives the broadcast wave and selects a broadcast wave that can be viewed, and a reception status determination unit.
With reference to the receivable area of the broadcast wave selected by the reception state determination unit, the route length capable of receiving the selected broadcast wave in the guide path when the moving body moves along the preset guide path. A list creation unit that calculates information indicating the above and creates a broadcasting station list in which the information indicating the calculated route length and the information indicating the broadcasting station that broadcasts the selected broadcast wave are associated and displayed.
It is provided with an output control unit that controls the display of the broadcasting station list created by the list creation unit.
The preset guide route is a route from the current position of the moving body to the destination of the moving body.
The list creation unit integrates the portion of the route in the receivable area in the route from the current position of the moving body to the preset distance among the preset guide routes, and the selected broadcast. A broadcast receiving device characterized by calculating information indicating a path length capable of receiving a wave. The broadcast receiving device according to claim 1 , wherein the reception state determination unit selects a broadcast wave that can be received at the current position of the moving body as the viewable broadcast wave. The information indicating the path length that can receive the selected broadcast wave is the receivable distance of the selected broadcast wave, the receivable time of the selected broadcast wave, the ratio of the receivable distance, or the receivable. The broadcast receiving device according to claim 1 , wherein the broadcast receiving device is at least one of the time ratios. Within the reception area of the broadcast wave being selected by the receiving unit, at least one of the receivable distance of the broadcast wave being selected and the receivable time of the broadcast wave being selected is extended. The broadcast receiving device according to claim 3 , further comprising a route resetting unit that resets a new guide route to be performed as a guide route of the moving body. The route resetting unit extends the movement distance or movement time of the moving body, which is extended when the moving body moves along the new guidance path, when the moving body moves along the new guidance path. The broadcast receiving device according to claim 4 , wherein when the receivable distance or the receivable time is less than the receivable distance, the new guide route is reset as the guide route of the moving body. The route resetting unit extends the movement distance and movement time of the moving body, which is extended when the moving body moves along the new guidance path, when the moving body moves along the new guidance path. The broadcast receiving device according to claim 4 , wherein when the receivable distance and the receivable time are less than the above-mentioned receivable distance, the new guide route is reset as the guide route of the moving body. The route resetting unit sets at least one of the receivable distance and the receivable time of the broadcast wave being selected by the receiving unit within the receiving area of the broadcast wave being selected by the receiving unit. The broadcast receiving device according to claim 4 , wherein the guide route is not reset when there is no route to be extended. The list creation unit provides a list of broadcasting stations in which at least one of the receivable distance of the broadcast wave or the receivable time of the broadcast wave is associated with information indicating a broadcast station of the broadcast wave. The broadcast receiving device according to claim 3 , wherein the broadcast receiving device is produced. The list creation unit associates at least one of the ratio of the receivable distance of the broadcast wave and the ratio of the receivable time of the broadcast wave with the information indicating the broadcasting station of the broadcast wave. The broadcast receiving device according to claim 3 , wherein a broadcasting station list is created. A step in which the reception status determination unit determines the reception status of the reception unit that receives the broadcast wave and selects a broadcast wave that can be viewed.
When the list creation unit refers to the receivable area of the selected broadcast wave and the moving body moves along the preset guidance route, the route length capable of receiving the selected broadcast wave in the guidance route. A step of calculating information indicating the above, and creating a broadcasting station list in which the information indicating the calculated route length and the information indicating the broadcasting station that broadcasts the selected broadcast wave are associated and displayed.
The output control unit includes a step of controlling the display of the created broadcasting station list.
The preset guide route is a route from the current position of the moving body to the destination of the moving body.
The list creation unit integrates the portion of the route in the receivable area in the route from the current position of the moving body to the preset distance among the preset guide routes, and the selected broadcast. A broadcast receiving method characterized by calculating information indicating a path length capable of receiving a wave.

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