JP2007214734A - Terrestrial digital broadcast receiver for mobile body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a terrestrial digital broadcast receiver for a mobile body cannot receive a terrestrial digital broadcast wave and electronic program guide information for providing a VICS (R) information without preparation of other tuner when a tuner of the terrestrial digital broadcast receiver for the mobile body receives the digital broadcast wave to view a broadcast program or the like. <P>SOLUTION: In order to solve the task above, the terrestrial digital broadcast receiver for the mobile body is provided, which includes a function of monitoring whether or not the terrestrial digital broadcast receiver for the mobile body receives a broadcast program and receiving traffic information such as the VICS (R) information or an electronic program guide by tuning the channel when not receiving the broadcast program. Further, in addition to the above, the terrestrial digital broadcast receiver for the mobile body is provided, which includes a function of acquiring terrestrial digital broadcast electronic program guide information when not receiving the traffic information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a terrestrial digital broadcast receiver for a mobile unit that receives terrestrial digital broadcasts in a mobile unit, and efficiently acquires electronic program guide information and simultaneously acquires traffic information such as traffic jam information and restriction information. The present invention relates to a receiving device.

  Due to the revision of the Radio Law, the transition from analog broadcasting to terrestrial digital broadcasting, which expires in 2011, is planned and promoted as a national policy. Broadcast wave reception by a moving body, which has been difficult for normal reception due to a change in reception sensitivity in normal terrestrial analog broadcasting, can be realized relatively easily by terrestrial digital broadcasting.

Since such terrestrial digital broadcasting can transmit various information as well as broadcast programs, data broadcasts, and electronic program guides by broadcast waves, it is considered to be used for other purposes. For example, there is one that receives and displays detailed road traffic information related to VICS (registered trademark) information used in a car navigation system from terrestrial digital broadcasting (for example, see Patent Document 1).
JP 2005-315714 A

  However, in order to separately acquire a broadcast program and detailed road traffic information by terrestrial digital broadcasting, at least two digital tuners are required. However, if two tuners are prepared, the broadcast program is always received by one unit, Another tuner has a problem that it can only be used for acquiring electronic program guide information when detailed road traffic information is not received. Also, if only one tuner for receiving terrestrial digital broadcast waves is provided, traffic information cannot be received simultaneously while receiving a broadcast program, so drivers etc. know traffic information while watching a broadcast program. In the event that he / she wanted to do so, it was necessary to change the channel one by one.

  In addition, since electronic program guides for digital terrestrial broadcast programs are currently distributed for each broadcast station, tuners must be assigned to the reception channels of each broadcast station when acquiring electronic program guides for all receivable broadcast channels. When it is necessary to receive the electronic program guide of each broadcast station individually, and the digital broadcast wave of the broadcast station NN is being received by the terrestrial digital broadcast receiver for the mobile unit, similar to the acquisition of traffic information. The problem is that it is not possible to receive the electronic program guide of another broadcasting station NT, broadcasting station NF,..., And if one wants to know the electronic program guide other than the broadcasting station being viewed, the channel must be changed one by one. was there.

  Therefore, the present invention provides a digital terrestrial broadcasting for mobiles that can efficiently acquire traffic information and electronic program guide information without causing the user to change channels one by one even when there is only one receiving tuner. An object is to provide a receiving apparatus.

  In order to achieve the above object, a mobile terrestrial digital broadcast receiving apparatus according to the present invention includes a tuner unit that receives terrestrial digital broadcasts including traffic information, and whether the tuner unit is receiving a broadcast program of the terrestrial digital broadcasts. A reception determination unit that determines whether or not, and a first control unit that controls the tuner unit to acquire traffic information when the determination result in the reception determination unit is not receiving the broadcast program. Yes.

  According to the mobile terrestrial digital broadcast receiving apparatus configured as described above, the reception determination unit determines whether or not a digital terrestrial broadcast program is being received. Since the tuner unit is controlled by the first control unit so that it can receive traffic information transmitted in the network, traffic information that is efficiently transmitted by digital broadcasting when the broadcast program is not received. Can be received.

  Note that controlling the tuner unit with the first control unit so that traffic information can be received means, for example, automatically controlling the reception frequency band in the tuner unit to a frequency band in which traffic information can be received by digital broadcasting. .

  The mobile terrestrial digital broadcast receiving apparatus of the present invention further includes a second control unit that controls the tuner unit to acquire the electronic program guide information of the terrestrial digital broadcast when the traffic information is not being acquired. It is configured.

  According to the terrestrial digital broadcast receiving device configured as described above, it is determined whether a digital terrestrial broadcast program is being received, and when no broadcast program is received and no traffic information is received. Further, the second control unit can control the tuner unit to tune to the receiving channel of the broadcasting station, and can receive the electronic program guide information for each broadcasting station.

  The mobile terrestrial digital broadcast receiving apparatus of the present invention acquires a position information acquisition unit that acquires current position information, and a reception frequency table that can be received from the current position information acquired by the position information acquisition unit. A table acquisition unit, and the tuner unit further acquires the electronic program guide information from the reception frequency table acquired by the table acquisition unit.

  According to the terrestrial digital broadcast receiving apparatus configured as described above, the reception frequency table that can be received from the current position information is acquired, and the electronic program guide information is acquired from the reception frequency table by the tuner unit. Therefore, the electronic program guide information of the broadcast program that can be received at the current position can be acquired.

  Further, the mobile terrestrial digital broadcast receiving apparatus of the present invention includes map data in which electronic information of a road map is held, a position information acquisition unit that acquires current position information, and the map data from the current position information. And a road type identification unit that identifies the road type by using the road type identification unit. The road type identification unit is configured to acquire the traffic information corresponding to the road type identified by the road type identification unit.

  According to the terrestrial digital broadcast receiver for mobile body configured as described above, the road type is identified by using the current position information and map data acquired by the position information acquisition unit. Traffic information corresponding to the road type identified by the identification unit can be acquired.

  For example, when the road type identification unit is identified as a highway, the highway traffic information can be acquired, and when the road type identification unit is identified as a general road, the general road traffic information is acquired. Therefore, the traffic information suitable for the road type at the current position can be acquired.

  The mobile terrestrial digital broadcast receiving apparatus uses the map data to search the mobile body for a guide route from the current position to the destination and perform route guidance, and the guide route in the guide route. Traffic information acquisition means for acquiring traffic information, notification means for notifying the traffic information acquired by the traffic information acquisition means, and re-search means for re-searching the guidance route based on the traffic information in the guidance route; Is further provided.

  According to the mobile terrestrial digital broadcast receiving apparatus configured as described above, the destination can be set from the current position and the guide route can be searched for route guidance, and the traffic in the searched guide route can be obtained. When the information is acquired by the traffic information acquisition means and there is traffic information such as traffic jam or traffic regulation in the guide route, the guide route can be searched again and notified by the notification means.

  The present invention determines whether or not a broadcast program is being received in a terrestrial digital broadcast receiving device for a mobile unit, and when the broadcast program is not being received, traffic information suitable for the type of road on which the mobile unit is traveling is obtained from the current position information. Electronic program guide information can be acquired when traffic information is not acquired at the same time, and by providing a route guidance function, using the acquired traffic information, Route guidance can be performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention.

(First embodiment)
A first embodiment of a terrestrial digital broadcast receiving apparatus for mobile objects according to the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a mobile terrestrial digital broadcast receiving apparatus.

  As shown in FIG. 1, the mobile terrestrial digital broadcast receiving apparatus A includes an antenna 1 that receives digital terrestrial broadcasts, a tuner unit 2 connected to the antenna 1, and a reception determination that determines the reception state of the tuner unit 2. And a first control unit 4 that controls the tuner unit 2 in accordance with the determination result of the reception determination unit 3.

  Here, the mobile terrestrial digital broadcasting receiver A is a receiving device that is fixed to or detachable from a mobile body such as an automobile including a motorcycle or a tricycle, and has a function of receiving a terrestrial digital broadcast wave. For example, a car navigation system capable of receiving terrestrial digital broadcasting described later can be used.

  The antenna 1 is configured to be able to receive terrestrial digital broadcast radio waves transmitted from the outside of a mobile body (car). For example, a film antenna, a diversity antenna, a dipole antenna, or the like is used as the antenna. Can do.

  The tuner unit 2 has a function of receiving digital terrestrial broadcasting including traffic information, and is configured to be able to selectively receive broadcast programs from radio waves of digital terrestrial broadcasting received by the antenna 1. Electronic program guide (EPG: registered trademark) information, emergency warning information, and the like can also be received.

  Note that “traffic information” refers to information related to road traffic, and includes, for example, traffic congestion information, traffic regulation information due to accidents / construction / inspection / disasters, emergency vehicle passage information, or parking lot empty information. Further, the band (frequency band) that can be received by the tuner unit 2 may be capable of receiving not only ultra-short waves but also microwaves, ultra-short waves, short waves, or medium waves.

  FIG. 2 is a conceptual diagram for explaining an example of a broadcast program and traffic information reception by digital terrestrial broadcast wave reception in the tuner unit 2. As shown in FIG. 2, in the tuner unit 2, the broadcast program of the digital terrestrial broadcast station NN is adjusted to c by adjusting the reception frequency band to a, and the broadcast program of the digital terrestrial broadcast station NT is set to c by adjusting to b. By combining these, it is possible to receive a broadcast program of a digital terrestrial broadcasting station NF and to receive traffic information by adjusting the reception frequency band to d. In addition, when the traffic information is transmitted by being multiplexed with the broadcast program of the broadcasting station NN in the radio wave of the frequency band a, the tuner unit 2 adjusts the received frequency band to a broadcast program. In addition, traffic information may be received.

  The reception determination unit 3 is configured to determine whether the tuner unit 2 is receiving the terrestrial digital broadcast program. The “broadcast program” is a television program or a radio program that can be viewed by receiving broadcast waves in a frequency band assigned to each broadcast station. It also includes CM and the like. Then, the reception determination unit 3 determines whether or not a broadcast program is being received by the tuner unit using an arithmetic device such as a CPU.

  FIG. 3 is a diagram illustrating an example of a reference channel table for performing a determination process in the reception determination unit 3. As shown in FIG. 3, a channel table for reference in which a frequency and identification information of a broadcasting station broadcast in the frequency band are associated with each other, such as a flash memory or an HDD (hard disk drive) in the receiving device. Held in a storage device. Then, an arithmetic unit such as a CPU refers to this channel table using a numeric value indicating the frequency currently set in the tuner unit 2 as a key when determining whether the tuner unit 2 is receiving a broadcast program. Here, for example, if the frequency currently being received by the tuner unit 2 is 563 MHz, the channel table indicates “×” (receiving a broadcast program), so the tuner unit 2 currently receives the broadcast program. It can be judged that it is in

  As another determination method, for example, the reception intensity at the tuner unit 2 is measured by measuring a current value in a predetermined frequency band in the antenna 1, and the reception intensity is equal to or less than a predetermined threshold by arithmetic processing of the CPU. Judge. In addition, if the reception intensity is equal to or lower than the threshold, a method of returning a determination result that a broadcast program in the frequency band is not being received may be used.

  The first control unit 4 is configured to control the tuner unit 2 to acquire traffic information when the determination result in the reception determination unit 3 is not receiving a broadcast program. Further, when the tuner unit 2 is tuned by the user, the control of the first control unit 4 may be automatically released to give priority to the user's operation.

  The first control unit 4 can be realized by a CPU or the like. When the reception determination unit 3 returns a determination result of “◯” (not receiving a broadcast program by the tuner unit), for example, FIG. A control command for adjusting the reception frequency of the tuner unit 2 to a frequency band in which traffic information can be received is output based on a reference table or the like.

  Moreover, since the traffic information acquisition cycle in the first control unit 4 is the latest information in which VICS (registered trademark) information, which is the mainstream of current traffic information, is updated every 5 minutes, broadcast programs are broadcast. The first control unit 4 may be configured to control the tuner unit 2 in accordance with the latest traffic information distribution cycle (here, every 5 minutes). Moreover, when acquisition of all the traffic information is not completed within the cycle of the latest traffic information distribution, the configuration may be such that the traffic information is acquired again from the beginning or only the difference information is acquired again.

  Next, the operation of the mobile terrestrial digital broadcast receiving apparatus A configured as described above will be described. FIG. 4 shows a terrestrial digital broadcast receiver for mobile when the functional components of the “tuner unit 2”, “reception determination unit 3”, and “first control unit 4” are realized as hardware. It is a schematic diagram showing an example of composition.

  As shown in FIG. 4, the terrestrial digital broadcast receiving apparatus A for mobile objects includes a CPU (central processing unit) 31 that implements the reception determination unit 3 and the first control unit 4 as hardware, and a main memory 32. ing. Further, a tuning circuit 21 and a tuner 22 that implement the antenna 1 and the tuner unit 2 as hardware are also provided. These are connected to each other through a data communication path such as the system bus 14 to transmit / receive information and perform processing.

  The main memory 32 provides a work area that is an execution work area for a program that determines and controls the reception frequency at the tuner 22 and also provides a data area to which a plurality of physical addresses are assigned. The program executed by the CPU 31 can perform data processing by specifying and accessing its address.

  Although not shown, the digital terrestrial broadcast receiving apparatus A for mobiles uses a demodulation circuit for demodulating and acquiring, for example, a video transport stream (TS) or traffic information from the broadcast program signal received by the tuner 22. , A decoder for decoding the video TS, and a video processing chip and a monitor for displaying the video of the broadcast program and traffic information. In addition, an external storage device or an interface may be provided. The external storage device is composed of, for example, a flash memory or an HDD, and holds the channel table and various setting information. The terrestrial digital broadcast receiver A for mobile objects may hold the traffic information received by the control process of the tuner 22 for a predetermined period and display it on a monitor or the like as necessary. The interface also accepts a reception channel (frequency) designation command from the operation panel of the device or remote controller, and command signals related to various operations.

  Here, a designation command for adjusting the radio wave reception of the tuner 22 to the reception frequency of 563 MHz is accepted at the interface. Then, a voltage is applied to the capacitor of the tuning circuit 21 according to the channel designation command, and tuning control of the reception frequency at the tuner is executed. Then, radio waves of a broadcast program having a reception frequency of 563 MHz are received, and the program is displayed on a monitor through processing of a video processing chip.

  At this time, the reception frequency and the like controlled by the tuning circuit 21 are stored in the address α of the main memory 32. It should be noted that the sending timing of the reception frequency storing command is preferably performed at intervals of 5 minutes, for example, since VICS (registered trademark) information is updated and distributed every 5 minutes as described above.

  3 is stored at the address β of the main memory 32, and the CPU 31 refers to the channel table, and the information stored at the address α is traffic information. A comparison determination process is performed to determine whether the reception frequency is received. Here, the reception channel information stored at the address α is “563 MHz”, and the determination result is “x” (broadcast program is being received) from the channel table shown in FIG. Therefore, the CPU 31 determines that the terrestrial digital broadcast program is currently being viewed, and does not perform control processing of the tuning circuit 21 for receiving traffic information.

  On the other hand, for example, when the tuner 22 is not set to any frequency band and “◯” (not receiving a broadcast program) is returned as the determination result, the CPU 31 sets the reception frequency of the tuning circuit 21 as shown in FIG. As shown in FIG. 5, a control command for tuning to “700 MHz”, which is a reception frequency for acquiring traffic information, is stored at an address θ of the main memory 32 and transmitted. The tuning circuit 21 receives the command, performs control such as changing the voltage of the capacitor, etc., and tunes the reception frequency to “700 MHz” to receive traffic information. The received traffic information is output and displayed on a monitor via a video processing chip. Alternatively, it is temporarily stored in a flash memory or the like, and output and displayed on a monitor in response to reception of a traffic information display command from a user at the interface.

  Next, the process flow of the mobile terrestrial digital broadcast receiving apparatus A configured as described above will be described. FIG. 5 is a flowchart showing an example of the flow of processing in the terrestrial digital broadcast receiving apparatus A for mobile objects.

  Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium. A part of the invention can be configured as software. Furthermore, a software product used for causing a computer to execute such software and a recording medium in which the product is fixed to a recording medium are naturally included in the technical scope of the present invention (the same applies throughout the present specification). Is).

  As shown in FIG. 5, it is first determined whether the tuner unit 2 is currently receiving a digital terrestrial broadcast program using the CPU 31 or the like (step SA1). Subsequently, when the result of the determination is that the tuner unit 2 is not receiving a digital terrestrial broadcast program, the tuner unit is controlled by, for example, sending a tuning control signal from the CPU 31 to control the voltage of the capacitor of the tuning circuit 21. 2 is acquired and traffic information is acquired (step SA2).

  As described above, the mobile terrestrial digital broadcast receiving apparatus according to the first embodiment executes the acquisition of traffic information at a timing when a terrestrial digital broadcast program is not received without requiring any special operation. be able to.

(Second embodiment)
A second embodiment of the terrestrial digital broadcast receiving apparatus for mobile objects according to the present invention will be described with reference to the drawings. FIG. 6 is a block diagram showing the configuration of the mobile terrestrial digital broadcast receiving apparatus.

  As shown in FIG. 6, the mobile terrestrial digital broadcast receiving apparatus B includes an antenna 1 that receives digital terrestrial broadcasts, a tuner unit 2 connected to the antenna 1, and a reception determination that determines the reception state of the tuner unit 2. And a first control unit 4 that controls the tuner unit 2 to receive traffic information according to the determination result of the reception determination unit 3, and the terrestrial digital broadcast receiver is receiving traffic information. The second control unit 5 is further provided to control the tuner unit 2 so as to receive the electronic program guide information when not.

  Here, the second control unit 5 is configured to control the tuner unit 2 to acquire the electronic program guide information of the terrestrial digital broadcast when the traffic information is not being received. Whether the second control unit 5 is receiving traffic information or not may be determined by the reception channel determination process in the reception determination unit 2 as described in the first embodiment.

  In addition, when it is determined whether or not the acquisition of traffic information has been completed and the determination result is that it has been completed, it may be determined that “traffic information is not being received”. As a specific method for determining the completion of the traffic information acquisition, for example, a method of determining from the end of file (EOF) at the end of the data file of the traffic information being distributed can be cited. Or it is good also as a structure which returns the judgment result that acquisition of traffic information was completed when predetermined time passed, after a channel was match | combined with the said traffic information receiving channel.

  At present, digital terrestrial broadcast electronic program guides are distributed all over broadcasting stations using BS (broadcast satellite) digital broadcast waves, for example. Are distributed individually for each broadcasting station. Therefore, the second control unit 5 of the mobile terrestrial digital broadcast receiving apparatus B is not viewing a broadcast program, and is not acquiring traffic information as a result of the above determination process (or acquisition of traffic information is completed). 2), the second control unit 5 sequentially switches the reception channels in the tuner unit 2 in accordance with the reception channel table as shown in FIG. The control process of sequentially receiving the electronic program guide of the channel (No. of channels) is executed. As a result, the user can know the electronic program guide of all channels (or predetermined channels) automatically acquired without any special operation.

  Normally, there is a high possibility that the electronic program guide at the past time is unnecessary because it is being broadcast or has already ended. Therefore, the terrestrial digital broadcast receiver B for mobile objects acquires the current time information from a built-in clock or the like, and when broadcast at a time later than the current time, the electronic program guide relating to the broadcast program indicated by the electronic program guide information The configuration may be such that only information is acquired and held.

  Next, the operation of the terrestrial digital broadcast receiving apparatus B configured as described above will be described. FIG. 7 shows the movement when the functional components of the “tuner unit 2”, “reception determination unit 3”, “first control unit 4”, and “second control unit 5” are realized as hardware. It is the schematic showing an example of the structure in the terrestrial digital broadcast receiver for bodies.

  As shown in FIG. 7, the mobile terrestrial digital broadcast receiving apparatus B includes a CPU 31 that implements the reception determination unit 3, the first control unit 4, and the second control unit 5 as hardware, and a main memory 32. I have. Further, a tuning circuit 21 and a tuner 22 that implement the antenna 1 and the tuner unit 2 as hardware are also provided. These are connected to each other through a data communication path such as the system bus 14 to transmit / receive information and perform processing. In addition, although not shown, a demodulation circuit, a decoder, a video processing chip, a monitor, an interface, a flash memory, and the like are also provided.

  Here, tuning control of the reception frequency at the tuner 22 is executed by the tuning circuit 21, and a broadcast wave with a reception frequency of 700 MHz is received. In the broadcast wave in this frequency band, traffic information is distributed as shown in FIG. Then, the CPU 31 refers to the channel table as shown in FIG. 3 stored at the address β using the reception frequency “700 MHz” stored at the address α of the main memory 32 as a key, thereby receiving the current traffic information. It can be judged that there is. Therefore, in this case, the tuner control process for acquiring the electronic program guide information is not executed.

  On the other hand, from the reception frequency information stored in the address α of the main memory 32, a determination result is returned that the traffic information is not being received and the terrestrial digital broadcast program is not being received by the calculation of the CPU 31. In this case, a “tuning control / switching command” is generated and stored in the address θ of the main memory 32. This “tuning control / switching command” is a command for controlling the receiving frequency in the tuning circuit 21 and sequentially switching to the receiving frequency of each terrestrial digital broadcasting station in accordance with, for example, a channel table as shown in FIG. Then, under the control of the tuning circuit 21 based on this tuning control / switching command, the electronic program guide of each terrestrial digital broadcast station is received and output and displayed on a monitor, for example. Alternatively, the received electronic program guide of each station is stored in a flash memory or the like, and the stored electronic program guide is acquired in response to acquisition of a request signal from a user using an input device such as a remote control or an operation panel. Is displayed on the monitor as needed.

  Next, the process flow of the mobile terrestrial digital broadcast receiving apparatus B configured as described above will be described. FIG. 8 is a flowchart showing an example of the flow of processing in the terrestrial digital broadcast receiving apparatus B for mobile objects. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium.

As shown in FIG. 8 , first, it is determined whether the tuner unit 2 is currently receiving a digital terrestrial broadcast program using the CPU 31 or the like (step SB1). Subsequently, when the result of the determination is that the tuner 22 is not receiving a terrestrial digital broadcast program, the tuner unit 2 is controlled by sending a tuning control signal or the like from the CPU 31 to control the voltage of the capacitor of the tuning circuit 21, for example. To obtain traffic information (step SB2). Subsequently, it is further determined whether the tuner unit 2 is currently receiving traffic information or a broadcast program using the CPU 31 (step SB3). When the determination result indicates that traffic information or a broadcast program is not being received, for example, a tuning control signal is transmitted from the CPU 31 to control the voltage of the capacitor of the tuning circuit 21 to control the tuner unit 2 to Program guide information is acquired (step SB4).

  As described above, in addition to the acquisition execution of traffic information at the timing when the terrestrial digital broadcast program as described in the first embodiment is not received by the mobile terrestrial digital broadcast receiver of the second embodiment, Acquisition of electronic program guide information of each terrestrial digital broadcasting station can be executed without requiring any special operation.

(Third embodiment)
A third embodiment of the mobile terrestrial digital broadcast receiving apparatus of the present invention will be described with reference to the drawings. FIG. 9 is a block diagram showing a configuration of a mobile terrestrial digital broadcast receiving apparatus.

  As shown in FIG. 9, the mobile terrestrial digital broadcast receiving apparatus C includes an antenna 1 that receives digital terrestrial broadcasts, a tuner unit 2 connected to the antenna 1, and a reception determination that determines the reception state of the tuner unit 2. Unit 3, a first control unit 4 that controls tuner unit 2 to acquire traffic information according to the determination result of reception determination unit 3, and a tuner that receives electronic program guide information when the traffic information is not being acquired. A second control unit 5 that controls the unit 2, a position information acquisition unit 6 that acquires the current position information of the moving body, and a table acquisition unit 7 that acquires a receivable table based on the current position information. It is configured to be equipped.

  Here, the position information acquisition unit 6 is configured to acquire current position information. As the method of acquiring the current position information, for example, position information measured using a GPS (Global Positioning System) is used. There is a method of obtaining by receiving. Alternatively, the location information acquisition unit 6 obtains the current location information by including the location specifying information in the transmission beacon of the conventional VICS (registered trademark) information already established on each expressway as infrastructure. It doesn't matter. Alternatively, it is possible to obtain the current position information calculated by cell ID or E-OTD (Enhanced Observed Time Difference) in the mobile phone system, autonomously from the vehicle speed sensor or geomagnetic sensor, and the traveling distance and traveling direction. A method of calculating the current position information and calculating current position information is also included.

  The table acquisition unit 7 is configured to acquire a reception frequency table from the current position information acquired by the position information acquisition unit 6. The “reception frequency table” is data in which the frequencies of broadcast stations that can be received in each broadcasting area or broadcasting area are tabulated.

  FIG. 10 shows an example of a table for obtaining this reception frequency table. As shown in FIG. 10, this table shows that the reception frequencies of broadcast stations that can be received in, for example, “area Ar1” can be received in “100 MHz”, “110 MHz”, “120 MHz”,. The reception frequency of each broadcasting station is a table in which the broadcast target area and the reception frequencies of broadcast stations that can be received in the broadcast target area are associated with each other, such as “200 MHz”, “210 MHz”,.

  Then, the table acquisition unit 7 identifies the current area “Ar1” from, for example, the latitude and longitude information indicated by the current position information acquired by the position information acquisition unit 6, and sets the receivable frequency of the Ar1 from the table shown in FIG. A received frequency table can be obtained. Note that the table shown in FIG. 10 may be stored in a local storage device, or may be stored in an external server device or the like, and the current position information transmitted via a network or the like may be stored in the table. A configuration in which the reception frequency table returned in response is acquired may be used. Then, the reception control process based on the reception frequency table is executed for the tuner unit 2 by the second control unit 5, and the tuner unit 2 is tuned to a frequency that can be received in the area.

  Next, the operation of the terrestrial digital broadcast receiving device C configured as described above will be described. FIG. 11 shows each of the “tuner unit 2”, “reception determination unit 3”, “first control unit 4”, “second control unit 5”, “position information acquisition unit 6”, and “table acquisition unit 7”. It is the schematic showing an example of the structure in the terrestrial digital broadcast receiver for mobile bodies at the time of implement | achieving a functional structure requirement as a hardware.

  As shown in FIG. 11, the terrestrial digital broadcast receiver C for mobile objects includes a CPU 31 that implements the reception determination unit 3, the first control unit 4, the second control unit 5, and the table acquisition unit 7 as hardware, And a memory 32. Further, a tuning circuit 21 and a tuner 22 that implement the antenna 1 and the tuner unit 2 as hardware are also provided. Moreover, the GPS unit 61 which implement | achieves the positional information acquisition part 6 as hardware is also provided. These are connected to each other through a data communication path such as the system bus 14 to transmit / receive information and perform processing. In addition, although not shown, a demodulation circuit, a decoder, a video processing chip, a monitor, an interface, a flash memory, and the like are also provided.

  Here, first, processing as described in the second embodiment is performed in each hardware configuration, and the tuner 22 is not currently receiving a broadcast program and is not receiving traffic information. The determination result by the CPU 31 is returned. Then, a position information acquisition command is sent from the CPU 31, and the GPS unit 61 that has received the position information acquisition command receives signals from a plurality of GPS satellites in order to grasp the current position, and identifies the satellite included in the received signal. Based on the information, signal transmission time information, current time information, etc., the latitude / longitude information of the current location is calculated by the calculator. Then, latitude / longitude information indicating the calculated current position is stored at an address α of the main memory 32.

  Then, for example, the table as shown in FIG. 10 stored in the flash memory is read to the address β of the main memory 32, and the latitude / longitude information stored in the address α is searched for as a key. The reception frequency table in the area including the indicated position, for example, “Ar1” is acquired and stored in the address θ of the main memory 32.

  Then, a control command is generated by the CPU 31 so as to adjust the tuner to the receivable frequency band indicated in the reception frequency table, and the capacitor voltage of the tuning circuit 21 is controlled by the control command, so that in that area Obtain electronic program guide information of receivable broadcasting stations.

  Next, a processing flow of the terrestrial digital broadcast receiving device C configured as described above will be described. FIG. 12 is a flowchart showing an example of the flow of processing in the terrestrial digital broadcast receiving apparatus C for mobile objects. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium.

  As shown in FIG. 12, first, the CPU 31 determines whether the tuner unit 2 is currently receiving a digital terrestrial broadcast program (step SC1). Subsequently, when the result of the determination is that the tuner unit 2 is not receiving a digital terrestrial broadcast program, the tuner unit is controlled by, for example, sending a tuning control signal from the CPU 31 to control the voltage of the capacitor of the tuning circuit 21. 2 is acquired and traffic information is acquired (step SC2). Subsequently, it is further determined whether the tuner unit 2 is currently receiving traffic information or a broadcast program using the CPU 31 or the like (step SC3). If the determination result indicates that traffic information or a broadcast program is not being received, for example, the current position information is acquired by the GPS unit 61 (step SC4), and a receivable table is acquired based on the current position information. (Step SC5). Then, using the acquired receivable table, for example, a tuning control signal is transmitted from the CPU 31 to control the voltage of the capacitor of the tuning circuit 21 to control the tuner unit 2 and acquire electronic program guide information (step SC6).

  As described above, the digital program guide information of each terrestrial digital broadcasting station according to the current traveling position without requiring any special operation by the mobile terrestrial digital broadcasting receiver of the third embodiment. Can be obtained.

(Fourth embodiment)
A fourth embodiment of the mobile terrestrial digital broadcast receiving apparatus of the present invention will be described with reference to the drawings. FIG. 13 is a block diagram showing the configuration of the mobile terrestrial digital broadcast receiving apparatus.

  As shown in FIG. 13, the mobile terrestrial digital broadcast receiving apparatus D includes an antenna 1 that receives digital terrestrial broadcasts, a tuner unit 2 connected to the antenna 1, and a reception determination that determines the reception state of the tuner unit 2. And a first control unit 4 that controls the tuner unit 2 so as to acquire traffic information according to the determination result of the reception determination unit 3, and the map data 8 and position information for acquiring the current position information of the moving body The configuration further includes an acquisition unit 6 and a road type identification unit 9 that identifies the type of road on which the moving body is currently traveling based on the current position information and the map data. (Of course, the second control unit 5 and the table acquisition unit 7 may be provided as in the second and third embodiments.)

  The map data 8 holds electronic information of the road map. For example, the map data 8 may be realized by holding the electronic information of the road map in an external storage device such as a hard disk drive or a flash memory locally or on a network.

  “Electronic information of a road map” means, for example, information indicating a map image expressed in a vector format or / and a raster format in association with latitude / longitude information, as well as road intersections and dead ends on the map called chain information. It is an electronic map that can grasp the road shape and network structure on the map by including latitude and longitude information indicating points and shape points, and information indicating connection relations between intersections.

  The electronic information of the road map also includes information regarding the type of the road. “Road type” refers to the type of road distinguished by law, user, management method, or function. For example, the type of expressway, general road, prefectural roads, municipal roads, and exclusive highways. And general motorways, toll roads and toll roads, main arterial roads, arterial roads and auxiliary arterial roads.

  Further, the map data 8 may be obtained by dividing a map into mesh shapes and uniquely assigning an identification number to each map mesh. By dividing the map data into meshes in this way, it is possible to provide traffic information in a form that is easy for the user to grasp, such as obtaining traffic information related to the mesh including the current location of the vehicle.

  FIG. 14 shows an example of the map data 8. As shown in FIG. 14, the latitude and longitude of the center position of the map data “ABC” identified by mesh No. “5383-63” are “35 degrees 40 minutes 15.9 seconds east longitude, 139 degrees 45 minutes 52.8 seconds north latitude”. In the mesh, there are roads identified by road IDs “Rd1”, “Rd2”, and “Rd3”. Each road is a road having a predetermined shape with the coordinates P1 (X1, Y1), P2 (X2, Y2),... On the map corresponding to the latitude and longitude as its start point, intersection, curve point, etc. The road types are “highway”, “highway”, and “general road”, respectively. Therefore, by referring to such map data 8 using the current position information as a key, it is possible to determine the type of road on which the vehicle is currently traveling, the mesh including the traveling road, and the like.

  Although not shown, the map data 8 may include additional information such as an address, a place name, and a landmark in association with latitude / longitude information.

  The position information acquisition unit 6 is configured to acquire the current position information. Therefore, like the “position information acquisition unit” already described in the third embodiment, the acquisition method of the current position information is: For example, there is a method of acquiring position information measured by using GPS.

  The road type identification unit 9 is configured to identify the road type using the map data 8 from the current position information. For example, as the current position information, latitude / longitude information “35 degrees 40 minutes 15.9 seconds east longitude, north latitude By acquiring “139 degrees 45 minutes 52.8 seconds”, it is possible to identify that the type of road currently running is an expressway with reference to the map data shown in FIG. 14. Further, it can be determined that the road currently being traveled is the road indicated by the road ID “Rd1”, and that the road type is the expressway. In that case, processing for acquiring and displaying the traffic information distributed regarding the expressway identified by the road ID “Rd1” from the traffic information received by the tuner unit 2 is executed. Or you may perform the process for acquiring the traffic information regarding the expressway, and the traffic information in the mesh “5383-63” of the predetermined range containing the expressway “Rd1”.

  When another latitude / longitude information is acquired as the current position information, and the road type identification unit 9 identifies that the currently running road is a “general road” identified by the ID “Rd3”, Within the N × M mesh group including the mesh “5383-63” including the general road “Rd3” and other meshes adjacent to the mesh “5383-63” from the traffic information received by the tuner unit 2 Control to get traffic information at. The N × M range may be determined depending on the capacity of a flash memory that temporarily holds traffic information.

  In addition, when the mesh including the currently traveling road is switched, it is necessary to acquire traffic information on the newly switched mesh. Therefore, it is determined whether or not the mesh traffic information included in the currently traveling road has been acquired based on the position information acquired by the position information acquisition unit 6, and the traffic information is reacquired according to the determination result. It is also good.

  Then, according to the currently identified road type identified as described above, for example, in the case of a general road, as shown in FIG. 15A, traffic information related to the general road is expressed in units of N × M predetermined meshes. Receive and display automatically. Further, in the case of an expressway, as shown in FIG. 15B, traffic information distributed in units of expressways is automatically received and displayed without being limited to a predetermined mesh.

  In addition, the reason for acquiring traffic information in such a way that traffic information is not limited to meshes or the like and traffic information of highway units and traffic information of general roads in mesh units is the reason why “highway” is, for example, Tokyo The distance and range are wide compared to ordinary roads, such as “Tomei Expressway” connecting Tokyo and Nagoya. In addition, since there are almost no intersections, the number of routes that can be selected is small. Therefore, in the case of an expressway, it is better to acquire information such as traffic congestion far from the current travel location in advance. On the other hand, on general roads, multiple general roads intersect at intersections and it is possible to select multiple routes, so traffic information related to all general roads in the vicinity of the vehicle is distributed rather than traffic information being distributed for each road. This is because it is more convenient to acquire information. Of course, a configuration may be adopted in which traffic information such as mesh units is acquired even on an expressway according to the user's preference.

  Next, the operation of the terrestrial digital broadcast receiving device D configured as described above will be described. FIG. 16 shows each of the “tuner unit 2”, “reception determination unit 3”, “first control unit 4”, “location information acquisition unit 6”, “map data 8”, and “road type identification unit 9”. It is the schematic showing an example of the structure in the terrestrial digital broadcast receiver for mobile bodies at the time of implement | achieving a functional structure requirement as a hardware.

  As shown in FIG. 16, the terrestrial digital broadcast receiver D for mobile objects includes a CPU 31 that implements the reception determination unit 3, the first control unit 4, and the road type identification unit 9 as hardware, and a main memory 32. I have. Further, a tuning circuit 21 and a tuner 22 that implement the antenna 1 and the tuner unit 2 as hardware are also provided. Further, a GPS unit 61 that realizes the position information acquisition unit 6 as hardware and an external storage device 81 that is hardware for storing the map data 8 are also provided. These are connected to each other through a data communication path such as the system bus 14 to transmit / receive information and perform processing. In addition, although not shown, a demodulation circuit, a decoder, a video processing chip, a monitor, an interface, and the like are also provided.

  Here, first, processing as described in the first embodiment is performed, and the CPU 31 performs determination processing that the tuner 22 is not currently receiving a broadcast program. Then, the CPU 31 generates and sends a position information acquisition command, and the GPS unit 61 that receives the sent position information acquisition command receives signals from a plurality of GPS satellites in order to grasp the current position, and receives the signals. Based on the satellite identification information, signal transmission time information, current time information, and the like included in the signal, the latitude and longitude of the current location, which is current position information, is calculated by a calculator. Then, latitude / longitude information indicating the calculated current position is stored at an address α of the main memory 32.

  Then, the CPU 31 refers to the map data 8 as shown in FIG. 14 which is read from the external storage device 81 and stored at the address β using the latitude and longitude information indicating the current position stored at the address α of the main memory 32 as a key. Thus, the currently traveling road is identified as, for example, “highway Rd1 whose type is a highway”. Then, the CPU 31 executes a process for extracting the traffic information related to the highway Rd1 from the traffic information acquired by the tuner 22 regardless of the mesh for dividing the map. In this way, traffic information corresponding to the type of road currently running can be acquired.

  Next, the flow of processing of the terrestrial digital broadcast receiving device D configured as described above will be described. FIG. 17 is a flowchart showing an example of the flow of processing in the terrestrial digital broadcast receiving apparatus D for mobile objects. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium.

  Here, although not shown, it is determined using the CPU 31 or the like whether the tuner unit 2 is currently receiving a broadcast program, as in the processing of the first embodiment. Then, when the determination result is not being received, as shown in FIG. 17, the current position information is acquired using, for example, the GPS unit 61 (step SD1), and the current position information is stored in advance as a key. The map data 8 is searched (step SD2). Based on the search result, it is identified whether the currently traveling road type is a general road or a highway (step SD3).

  As a result of the identification, if the currently traveling road type is identified as a general road, for example, traffic information in the mesh including the current location is acquired (step SD4a). As a result of the identification, when the currently traveling road type is identified as an expressway, for example, traffic information on the expressway is acquired, or traffic information in a mesh including the current location is acquired (step) SD4b). In this way, when the broadcast program is not being received, the traffic information corresponding to the road type can be acquired after identifying the road type.

(Other examples of the fourth embodiment)
Of course, the fourth embodiment may have a function of acquiring electronic program guide information based on the second and third embodiments. In other words, when the broadcast program is not being received, in addition to the function of acquiring the traffic information after identifying the road type in the above embodiment, it is determined whether or not the traffic information is being acquired, and in some cases, the reception frequency table is used. Thus, the mobile digital terrestrial broadcast receiving device having the function of acquiring the program guide information. FIG. 18 shows an example of functional blocks in such a mobile terrestrial digital broadcast receiving apparatus. As shown in FIG. 18, the terrestrial digital broadcast receiving device D <b> 2 for this other example has a second control unit 5 in addition to the configuration requirements of the fourth embodiment. Thereby, as described in the second and third embodiments, when the traffic information is not being acquired, the tuner unit 2 can be controlled to acquire the electronic program guide information of all channels (or predetermined channels). .

  FIG. 19 is a flowchart showing an example of a process flow in the terrestrial digital broadcast receiving device D2 for a mobile object. As shown in FIG. 19, first, the CPU 31 determines whether the tuner unit 2 is currently viewing a digital terrestrial broadcast program (step SD21). If the determination result is not being received, the current position information is acquired using, for example, the GPS unit 61 (step SD22), and the map data 8 stored in advance is searched using the current position information as a key. (Step SD23). Based on the search result, it is identified whether the currently traveling road type is a general road or a highway (step SD24).

  As a result of the identification, if the currently traveling road type is identified as a general road, for example, traffic information in the mesh including the current location is acquired (step SD25a). As a result of the identification, when the currently traveling road type is identified as an expressway, for example, traffic information on the expressway is acquired, or traffic information in a mesh including the current location is acquired (step) SD25b). Subsequently, it is determined whether the tuner unit 2 is acquiring traffic information or a broadcast program using the CPU 31 or the like (step SD26), and the determination result indicates that the traffic information or the broadcast program is not being received. For example, by sending a tuning control signal from the CPU 31 and controlling the voltage of the capacitor of the tuning circuit 21, the tuner unit 2 is controlled to obtain electronic program guide information (step SD27).

  As described above, traffic information corresponding to the type of road on which the mobile body is currently traveling can be automatically acquired without requiring any special operation by the digital terrestrial broadcasting receiver for mobile bodies.

(Fifth embodiment)
A fifth embodiment of the mobile terrestrial digital broadcast receiving apparatus of the present invention will be described with reference to the drawings. FIG. 20 is a block diagram showing a configuration of a mobile terrestrial digital broadcast receiving apparatus.

  As shown in FIG. 20, the terrestrial digital broadcast receiving device E for mobile objects includes an antenna 1 for receiving terrestrial digital broadcast, a tuner unit 2 connected to the antenna 1, and a reception determination for determining the reception state of the tuner unit 2. Part 3, first control part 4 that controls tuner part 2 to obtain traffic information according to the judgment result of reception judgment part 3, map data 8, and position information acquisition that acquires current position information of the moving body A route type identifying unit 9 for identifying a type of road on which the mobile object is currently traveling based on the current position information and map data, and route guidance means 10 for performing route guidance, route guidance The traffic information acquisition means 11 for acquiring the traffic information on the guide route indicated by the above, the notification means 12 for informing the acquired traffic information, and the re-search for the route guidance in consideration of the acquired traffic information. Search A stage 13 has a configuration further comprising.

  Here, the route guidance means 10 is configured to search for a guidance route from the current position to the destination by using the map data 8 and perform route guidance, for example, similar to a conventional navigation system. Using the processing and algorithm, the road included in the map data 8 is searched from the current position (or the start point specified by the user via the interface) and the position information of the destination set by the user. Search the guide route to the ground.

  The traffic information acquisition means 11 is configured to acquire the traffic information on the guide route. FIG. 21 is a conceptual diagram for explaining an example of the traffic information acquisition.

  As shown in FIG. 21, for example, the guide route r is retrieved by the route guide means 10 from the position information of the current location s and the destination g specified by the user via the interface. Then, the traffic information acquisition means 11 extracts, for example, traffic information related to the road Rd4 constituting the guide route r from the traffic information received by the tuner unit 2 using the identification information and the like, and the road Rd4 of the mesh M8. Traffic information indicating that a traffic accident has occurred and traffic information indicating that a traffic jam is currently occurring on the road Rd4 of the mesh M12 are acquired.

  The notification unit 12 is configured to notify the traffic information acquired by the traffic information acquisition unit 11. Specifically, it is composed of, for example, a monitor, a speaker, and the like, and is used by displaying text information and outputting voice information “traffic accident occurred on road Rd4 of mesh M8” acquired as described above. Inform the person. Alternatively, the user is notified of traffic information by performing a process of displaying an icon or the like at a traffic accident occurrence point on the navigation map image displayed on the monitor.

  The re-search means 13 is configured to re-search the guide route based on the traffic information in the guide route. FIG. 22 is a conceptual diagram for explaining an example of this re-search.

  As shown in FIG. 22, traffic information indicating that a traffic accident and a traffic jam have occurred on the guidance route indicated by the route guidance. Then, the re-search means 13 re-searches a guide route r ′ different from r from the current location s to the destination g by a search that takes into account the condition that does not pass through the road Rd4. Of course, the re-search process acquires not only the traffic information on the guide route, but also the traffic information of all the roads that are guide route candidates, and the re-search process takes into account the conditions for removing the roads that indicate the occurrence of traffic jams from the guide route candidates. It may be a search process.

  Next, an operation of the terrestrial digital broadcast receiving device E configured as described above will be described. 23 shows the “tuner unit 2”, “reception determination unit 3”, “first control unit 4”, “location information acquisition unit 6”, “map data 8”, “road type identification unit 9”, and “ A terrestrial digital broadcast receiver for mobiles when the functional components of the route guidance means 10 "," traffic information acquisition means 11 "," notification means 12 ", and" re-search means 13 "are realized as hardware. It is the schematic showing an example of the structure in.

  As shown in FIG. 23, the terrestrial digital broadcast receiver E for mobile objects implements the reception determination unit 3, the first control unit 4, the road type identification unit 9, the route search unit 11, and the re-search unit 13 as hardware. CPU 31 and main memory 32 are provided. The antenna 1, the tuner unit 2, and the traffic information acquisition unit 11 are also provided with a tuning circuit 21 and a tuner 22 that are implemented as hardware. Further, a GPS unit 61 that realizes the position information acquisition unit 6 as hardware and an external storage device 81 that is hardware for storing the map data 8 are also provided. In addition, a video processing chip 121 and a monitor 122 that implement the notification unit 12 as hardware are provided. These are connected to each other through a data communication path such as the system bus 14 to transmit / receive information and perform processing. In addition, although not shown, a demodulation circuit, a decoder, an interface, and the like are also provided.

  Here, the map data held in the external storage device 81 from the position information of the destination inputted at the interface and the current position information calculated by the GPS unit 61 by the process using the algorithm in the conventional navigation system. A road included in 8 is searched, and a guide route to the destination is determined. Based on the determined guide route identification information and the like, the map and the guide route are displayed on the monitor 122.

  At this time, the CPU 31 stores the identification numbers of the roads constituting the determined guide route in the address α of the main memory, respectively. Then, the road identification included in the traffic information from the traffic information efficiently acquired by the tuner 22 at the timing when the broadcast program is not being received by the control to the tuning circuit 21 as described in the above embodiment. The traffic information that matches the road identification number included in the guide route stored at address α is extracted with reference to the number, and stored at address β in main memory 32. Then, the stored traffic information is displayed on the monitor 122 by, for example, superimposing display processing on text or a map by the video processing chip 121 to notify the user.

  Further, in this digital terrestrial broadcasting receiver E for mobile objects, the road identification number stored at the address α in the main memory 32 is used and the condition that the road indicated by the road identification number is not passed is taken into consideration. Then, a guidance route re-search process is performed, for example, another guidance route from the current location s to avoiding traffic jams to the destination g is determined and displayed on the monitor 122 or the like.

  Next, a processing flow of the terrestrial digital broadcast receiving device E configured as described above will be described. FIG. 24 is a flowchart showing an example of the flow of processing in the terrestrial digital broadcast receiving apparatus E for mobile objects. Note that the steps shown below may be processing steps that constitute a program for controlling a computer recorded on a medium.

  Here, first, as described in the processing of the fourth embodiment, it is determined by the CPU whether or not the broadcast program is being received by the tuner unit, and it is efficient at a timing when the broadcast program is not being received. The traffic information according to the currently traveling road type identified based on the current position information is acquired (step SE1).

  In addition, when a route guidance command is received by an operation of an interface or the like, a guide route from the current position to the destination is searched using map data (step SE2). Then, for example, traffic information on the guide route searched in step SE2 is acquired from the traffic information acquired in step SE1 using a road identification number or the like (step SE3), and the traffic information is displayed on the monitor. Etc. to notify the user (step SE4).

  Further, the guide route is searched again based on the traffic information in the guide route acquired in step SE2 (step SE5), and a new guide route that avoids traffic jams or traffic restrictions is presented to the user. Of course, the re-search process in step SE5 is performed when the traffic information having the same road identification number or the like is not acquired in step SE3, or even if it is acquired, it may hinder road traffic such as traffic congestion and traffic regulation. If it is not traffic information, for example, it may not be executed when it is determined by a keyword matching process for a header of traffic information or text data.

  As described above, this mobile digital terrestrial broadcast receiving device was searched using traffic information automatically acquired without requiring any special operation and avoiding traffic jams and traffic regulations. You can know the guide route that is efficient for traffic.

  The present invention relates to a terrestrial digital broadcast receiving apparatus in a mobile object, which enables viewing of broadcast programs and acquisition of traffic information and acquisition of cross-sectional electronic program guide information without taking the user's trouble. In addition to the in-vehicle terminal, it can be used for car navigation devices.

The figure showing an example of the functional block in the terrestrial digital broadcast receiver for mobile bodies of 1st embodiment The conceptual diagram for demonstrating an example of reception of the traffic information in the tuner part of the digital terrestrial broadcasting receiver for mobile bodies of 1st embodiment, or terrestrial digital broadcasting The figure showing an example of the reference table for the judgment processing in the reception judgment part of the terrestrial digital broadcast receiver for mobile bodies of 1st embodiment. Schematic showing an example of a hardware configuration in the digital terrestrial broadcasting receiver for mobile objects of the first embodiment The flowchart showing an example of the flow of the process in the terrestrial digital broadcast receiver for mobile bodies of 1st embodiment. The figure showing an example of the functional block in the terrestrial digital broadcast receiver for mobile bodies of 2nd embodiment Schematic showing an example of a hardware configuration in the terrestrial digital broadcast receiving apparatus for mobile objects of the second embodiment The flowchart showing an example of the flow of the process in the terrestrial digital broadcast receiver for mobile bodies of 2nd embodiment. The figure showing an example of the functional block in the terrestrial digital broadcast receiver for mobile bodies of 3rd embodiment The figure showing an example of the receivable table acquired by the table acquisition part of the terrestrial digital broadcast receiver for mobile bodies of 3rd embodiment. Schematic showing an example of a hardware configuration in the digital terrestrial broadcasting receiver for mobile objects of the third embodiment The flowchart showing an example of the flow of the process in the terrestrial digital broadcast receiver for mobile bodies of 3rd embodiment. The figure showing an example of the functional block in the terrestrial digital broadcast receiver for mobile bodies of 4th embodiment For explaining an example of map data held in the terrestrial digital broadcast receiver for mobile objects of the fourth embodiment The conceptual diagram for demonstrating an example of the traffic information of the general road and highway acquired with the terrestrial digital broadcast receiver for mobile bodies of 4th embodiment Schematic showing an example of a hardware configuration in the terrestrial digital broadcast receiving apparatus for mobile objects of the fourth embodiment The flowchart showing an example of the flow of the process in the terrestrial digital broadcast receiver for mobile bodies of 4th embodiment. The figure showing another example of the functional block in the terrestrial digital broadcast receiver for mobile bodies of 4th embodiment The flowchart showing another example of the flow of the process in the terrestrial digital broadcast receiver for mobile bodies of 4th embodiment. The figure showing an example of the functional block in the terrestrial digital broadcast receiver for mobile bodies of 5th embodiment The conceptual diagram for demonstrating an example of the traffic information acquisition in the terrestrial digital broadcast receiver for mobile bodies of 5th embodiment The conceptual diagram for demonstrating an example of the re-search in the terrestrial digital broadcast receiver for mobile bodies of 5th embodiment Schematic showing an example of the hardware constitutions in the digital terrestrial broadcasting receiver for mobile bodies of 5th embodiment The flowchart showing an example of the flow of the process in the terrestrial digital broadcast receiver for mobile bodies of 5th embodiment.

Explanation of symbols

A, B, C, D, D2, E
...... Terrestrial digital broadcast receiver for mobile body 1 ... Antenna 2 ... Tuner unit 21 ... Tuning circuit 22 ... Tuner 3 ... Reception judgment unit 31 ... CPU
32... Main memory 4... First control unit 5... Second control unit 6... Position information acquisition unit 61. Table acquisition unit 8 ... map data 81 ... external storage device 9 ... road type identification unit 10 ... route guidance means 11 ... traffic information acquisition means 12 ... -Notification means 121-Video processing chip 122-Monitor 13-Re-search means 14-System bus

Claims (5)

A tuner unit for receiving digital terrestrial broadcasting including traffic information;
A reception determination unit that determines whether or not the tuner unit is receiving the terrestrial digital broadcast program;
A first control unit that controls the tuner unit to acquire traffic information when the determination result in the reception determination unit is not receiving the broadcast program;
A terrestrial digital broadcast receiving apparatus for a mobile object, comprising: The mobile terrestrial digital broadcast receiver is
2. The terrestrial digital receiver for a mobile unit according to claim 1, further comprising a second control unit configured to control the tuner unit and acquire the electronic program guide information of the terrestrial digital broadcasting when the traffic information is not being acquired. . The mobile terrestrial digital broadcast receiver is
A location information acquisition unit for acquiring current location information;
A table acquisition unit that acquires a reception frequency table that can be received from the current position information acquired by the position information acquisition unit,
The digital terrestrial broadcast receiver for mobile units according to claim 2, wherein the tuner section acquires the electronic program guide information from the reception frequency table acquired by the table acquisition section. The mobile terrestrial digital broadcast receiver is
Map data holding electronic information of road maps,
A location information acquisition unit for acquiring current location information;
A road type identification unit for identifying a road type using the map data from the current position information,
The terrestrial digital receiver for mobile units according to any one of claims 1 to 3, wherein the traffic information is acquired in correspondence with the road type identified by the road type identification unit. The mobile terrestrial digital broadcast receiver is
Route guidance means for searching for a guidance route from the current position of the mobile body to the destination using the map data, and performing route guidance;
Traffic information acquisition means for acquiring the traffic information in the guide route;
Informing means for informing the traffic information acquired by the traffic information acquiring means,
5. The digital terrestrial broadcast receiving apparatus for mobile units according to claim 4, further comprising re-search means for re-searching the guide route based on the traffic information in the guide route.

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