WO2006043657A1 - 受信装置および管理装置 - Google Patents
受信装置および管理装置 Download PDFInfo
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- WO2006043657A1 WO2006043657A1 PCT/JP2005/019379 JP2005019379W WO2006043657A1 WO 2006043657 A1 WO2006043657 A1 WO 2006043657A1 JP 2005019379 W JP2005019379 W JP 2005019379W WO 2006043657 A1 WO2006043657 A1 WO 2006043657A1
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- Prior art keywords
- information
- channel
- reception
- receivable
- broadcast
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/61—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
- H04H60/66—Arrangements for services using the result of monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 for using the result on distributors' side
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/4508—Management of client data or end-user data
- H04N21/4524—Management of client data or end-user data involving the geographical location of the client
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6181—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via a mobile phone network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
- H04N21/6582—Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
- H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
- H04H60/43—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
- H04H60/51—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of receiving stations
Definitions
- the present invention relates to a receiving device, a management device, an information output method, an information providing method, a program for causing a computer to execute these methods, and a recording medium.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-274303
- the information constituting the past reception record is not the actual measurement information but does not reflect the reception environment on the actual route.
- An example is the problem of being different from the actual reception status at the upper moving position.
- a receiving device is a receiving device provided in a mobile body, and includes a broadcast receiving means for receiving broadcast radio waves, Position detecting means for detecting a current position of the mobile body and outputting current position information; reception state detecting means for detecting a channel and reception state of the broadcast radio wave received by the broadcast receiving means; and the position Information generation means for generating reception state information in which information on the current position of the mobile body detected by the detection means is associated with information on the channel and reception state of the broadcast radio wave detected by the reception state detection means And the reception status information generated by the information generation means is transmitted to a management device that manages the information of the broadcast radio wave channel and the reception status that can be received at an arbitrary position.
- the receiving device is a receiving device provided on the mobile body, and detects a current position of the mobile body, broadcast receiving means for receiving broadcast radio waves.
- Position detecting means and transmitting means for transmitting information on the current position of the mobile body detected by the position detecting means to a management device that manages information on the channel and reception status of receivable broadcast waves at an arbitrary position.
- the receivable information including the receivable broadcast wave channel and the reception state information at the current position of the mobile body is received from the management device.
- Receiving means and judging means for judging a channel receivable by the broadcast receiving means at the current position based on receivable information received by the receiving means; Output means for outputting channel information receivable by the broadcast receiving means based on a judgment result by the judging means.
- the management device is a management device that manages broadcast wave channels and reception status information that can be received by a receiving device provided in a mobile body.
- the information on the current position of the mobile body and the information on the channel and reception status of the broadcast radio wave received and received by the receiving device are associated with each other from the receiving device provided on the body.
- the storage means for storing the broadcast radio wave channel and the reception status information that can be received at an arbitrary position, and the reception status information and the storage information of the storage means!
- update means for updating information on the broadcast radio wave channel and reception state that can be received at an arbitrary position stored in the storage means is provided.
- the information output method is an information output method for outputting information of a channel receivable by a receiving device provided in the mobile body, wherein the current position of the mobile body A position detection step for detecting the channel, a reception state detection step for detecting a channel and reception state of a broadcast radio wave received by the receiving device, information on a current position of the mobile body detected by the position detection step, and A reception state information generation step for generating reception state information in which the broadcast wave channel and reception state information detected by the reception state detection step are associated with each other, and the reception generated by the reception state information generation step. Status information can be received from any broadcast radio channel that can be received at any location.
- an information providing method for providing information on a broadcast radio wave channel and a reception state that can be received to a receiving device provided in a mobile body,
- the receiving step for receiving at least information on the current position of the moving body from the receiving device provided in the moving body and the receiving information for the receiving step.
- the receivable broadcast wave channel and reception at the current position are stored from the storage means for storing the broadcast wave channel and the reception status information at an arbitrary position.
- An extraction step for extracting receivable information including state information, and the receivable information extracted by the extraction step from the current position information to the receiving device that has transmitted information! Send And a transmission step.
- a program according to the invention of claim 13 causes a computer to execute the information output method according to claim 11 or the information provision method according to claim 12.
- a computer-readable recording medium according to the invention of claim 14 is characterized in that the program according to claim 13 is recorded.
- FIG. 1 is a block diagram showing a configuration of a receiving apparatus according to an embodiment.
- FIG. 2 is a flowchart showing channel selection processing in the receiving apparatus.
- FIG. 3 is a block diagram of a configuration of the receiving apparatus according to the first embodiment.
- FIG. 4 is a block diagram showing an internal configuration of a control unit.
- FIG. 5 is a block diagram showing an internal configuration of the server.
- FIG. 6 is a flowchart showing reception state information generation and transmission processing executed by the reception device.
- FIG. 7 is a flowchart showing database construction processing in the server.
- FIG. 8 is a chart showing an example of database contents.
- FIG. 9 is a flowchart showing a receiving channel setting process in the receiving apparatus.
- FIG. 10 is a diagram illustrating an example of receivable information.
- FIG. 11 is a flowchart showing a reception channel setting process when searching for a planned travel route.
- FIG. 12 is a block diagram of a configuration of the receiving apparatus according to the third embodiment.
- FIG. 1 is a block diagram illustrating a configuration of a receiving device according to an embodiment.
- the receiving device 1 is mounted on a moving body such as a vehicle. It is also a portable receiver such as a portable device or a mobile phone.
- the receiving device 1 receives broadcast radio waves by the broadcast receiving unit 2 and can view broadcast programs for each channel. Broadcast radio waves are digital broadcasts and analog broadcasts, and include video and audio information such as TV or audio information such as radio. These video and audio are output via the output unit 14.
- the receiving device 1 includes a position detection unit 4 that detects the current position of the mounted vehicle, and a reception state detection unit 5 that detects a channel of a received broadcast radio wave and a reception state. .
- the reception state detection unit 5 detects reception power of broadcast radio waves, multipath information, modulation information, error code rate, broadcast station information, receiver information, and the like as reception states.
- Information on the current position of the vehicle detected by the position detection unit 4 and information on the channel and reception state of the broadcast wave detected by the reception state detection unit 5 are input to the information generation unit 6.
- Information generator 6 generates reception state information in which the input current position information of the vehicle is associated with broadcast radio wave channel and reception state information.
- the reception state information is transmitted to a management device (server 100 shown in FIGS. 3 and 5) to be described later via the transmission unit 7.
- the management device 100 is disposed outside the vehicle on which the reception device 1 is mounted, and the transmission unit 7 transmits the reception state information to the management device 100 via a network including the Internet and a wireless network. .
- the management device 100 stores the reception status information transmitted from the reception device 1 via the network in a database, and when receiving the reception status information from the reception device 1, the management device 100 receives the current position of the vehicle or the surrounding area of the current position.
- the receiving apparatus 1 transmits the receivable information including the information on the broadcast wave channel and the reception state that can be received in the receiving apparatus 1.
- the receiving device 1 can be configured to have the function of a management device (server 100).
- the receivable information transmitted from the management apparatus 100 is received via the receiving unit 11 and output to the determining unit 12. Based on the receivable information, the determination unit 12 determines a receivable channel in the current position of the vehicle or around the current position. The determination unit 12 can also determine a receivable channel based on the reception state information and the receivable information.
- the preset unit 13 presets channels that can be received by the broadcast receiving unit 2 based on the determination result of the determining unit 12. Receivable channels preset by the preset unit 13 can be displayed via the output unit 14.
- the search unit 20 searches the planned movement route of the vehicle based on the current position of the vehicle and the destination destination, and transmits the planned movement route to the management device 100 via the transmission unit 7. You can also do it.
- the management apparatus 100 can transmit to the receiving apparatus 1 receivable information including information on channels that can be received on the planned movement route of the vehicle.
- FIG. 2 is a flowchart showing channel selection processing in the receiving apparatus.
- the receiving device 1 receives broadcast radio waves from the broadcast receiving unit 2 (step Sl). Further, the current position of the moving body (vehicle) is detected by the position detector 4 (step S2). Then, reception state information is generated by associating the detected current position of the vehicle with the received channel (CH) and the reception state of this channel. Then, the reception state information generated at the current position is transmitted to the management apparatus 100 (step S3). Information sent to the management device 100 Can be just the current position of the vehicle.
- management device 100 reads a receivable channel and reception state at the current position on the database based on the current position of the vehicle included in the received reception state information, and generates receivable information. .
- the receiving device 1 receives this receivable information (step S4).
- the receiving device 1 selects a channel that can be received at the current position of the vehicle based on the reception state information and the receivable information (step S5), and ends the process.
- the reception status information and the receivable information are respectively associated with the current position of the vehicle, the channel at this vehicle position, and information on the reception status. Therefore, the decision unit 12 compares the reception status information in the same channel with each other using the current position information of the vehicle included in the reception status information and the receivable information as a key. Can determine the channel.
- the channel preset in the preset unit 13 means that there is a channel that can be received in the broadcast receiving unit 2. That is, when there are a plurality of receivable channels, the preset unit 13 sets (presets) the plurality of channels in the broadcast receiving unit 2. The actual channel selection is performed by manual operation of a desired broadcast program channel by the user from the power of a plurality of preset channels.
- FIG. 3 is a block diagram of the configuration of the receiving apparatus according to the first embodiment.
- a configuration of a receiving system including a receiver 51 for receiving digital broadcasting and a server 100 is shown.
- a vehicle 51 as a moving body is equipped with a receiver 51.
- the receiver 51 receives broadcast radio waves from a digital broadcast TV or the like.
- the tuner 51 selects a channel from the broadcast radio waves received by the antenna 52, and the demodulator 54
- the video signal and audio signal decoded by the MPEG decoder 56 are output to the output unit 60 after being demodulated by the error decoder 55 and corrected by the error correction unit 55.
- the output unit 60, and a display unit such as a T V, is constituted by a speaker which audio outputs an audio signal.
- the vehicle 50 is provided with a vehicle speed detection unit 71, a GPS unit 72, a communication unit 73 such as a modem, and a control unit 75.
- the vehicle speed detector 71 includes a vehicle speed sensor that detects the vehicle speed (movement speed) of the vehicle 50.
- the GPS unit 72 receives radio waves from GPS satellites and acquires position information (for example, latitude / longitude) of the current position of the vehicle.
- the vehicle speed detection unit 71 can calculate various sensor forces such as a gyro sensor.
- the vehicle position information can be calculated using information obtained by receiving radio waves from GPS satellites and various sensor forces.
- the position information may be calculated.
- the GPS unit 72 may obtain vehicle speed information and traveling direction information in addition to the vehicle position information.
- This GPS unit 72 has map information (not shown) and searches for a planned travel route of the vehicle 50 to the destination.
- the communication unit 73 can send and receive various types of information by accessing the server 100 via the network 80 such as the Internet.
- the control unit 75 includes a CPU that executes control processing.
- the control unit 75 is connected to a memory 76 as a storage unit, and is used to execute control processing.
- the memory 76 is composed of ROM, RAM, HDD and the like.
- the control unit 75 receives the output signals S1 to S4 of each part of the receiver 51, the vehicle speed information S5 detected by the vehicle speed detection unit 71, and the current position information S6 detected by the GPS unit 72.
- the GPS unit 72 can output the distance between the broadcast tower that transmits broadcast radio waves and the current position.
- the control unit 75 can input / output information to / from the communication unit 73 and transmit / receive information to / from the network 80 via the communication unit 73.
- the tuner unit 53 outputs a signal S1 of received power (S meter) of the received broadcast radio wave.
- the demodulator 54 outputs multipath information at the time of digital broadcast (OF DM) demodulation, and modulation information S2 such as the type of modulation.
- the error correction unit 55 outputs an error code rate (BER) signal S3.
- the MPEG decoder 56 outputs the broadcast station information S4, for example, the received broadcast station information for each channel.
- the receiver 51 sends the receiver information such as the manufacturer of the receiver 51 and the serial number to the control unit 75. Can be output.
- the receiver 51 outputs at least one signal (information) among the plurality of signals (information) to the control unit 75.
- the control unit 75 associates the signal (information) output from the receiver 51 when the vehicle 50 moves with the information on the current position output from the GPS unit 72 to the server 100 via the communication unit 73. Send.
- a broadcast program (channel) that can be received by the receiver 51 while the vehicle 50 is moving is determined, and a selection signal S10 for selecting this broadcast program (channel) is output to the tuner unit 53 of the receiver 51.
- the server 100 is requested to receive receivable channel information (receivable information), obtain receivable channel information transmitted from the server 100, and determine receivable broadcast programs.
- the control unit 75 can display information on receivable channels on the output unit 60. Details of the processing executed by the control unit 75 will be described later.
- the server 100 functions as a management device that manages reception status information.
- the server 100 includes a communication unit 101 that transmits and receives information to and from the communication unit 73 of the vehicle 50 via the network 80, and a database (DB) 102.
- the database 102 stores information indicating the reception status of channels that can be received for each current position of the vehicle 50 in a database. Details of processing executed by the server 100 will be described later.
- FIG. 4 is a block diagram showing an internal configuration of the control unit.
- the control unit 75 includes an information input unit 110, a reception state information generation unit 111, a communication input / output unit 112, a comparison unit 113, and a selection unit 114.
- the information input unit 110 includes output signals (information) S1 to S4 of each part of the receiver 51, that is, received power, multipath information, modulation information, BER, broadcast station information, manufacturer, serial number. Is entered. Further, vehicle speed information S5 is input from the vehicle speed detection unit 71, and current position information S6 is input from the GPS unit 72.
- the reception status information generation unit 111 receives the current position information S6 input to the information input unit 110, the channel being received by the receiver 51, and the signals (information) S1 to S4 output from the receiver 51. And reception state information in association with. For example, the latitude and longitude of the current position and the BER of the reception channel are generated as reception status information.
- the communication input / output unit 112 outputs the reception state information generated by the reception state information generation unit 111 to the communication unit 73 and transmits it to the server 100.
- receivable information from the server 100 is input to the communication input / output unit 112 via the communication unit 73.
- the comparison unit 113 receives reception state information and receivable information.
- the comparison unit 113 compares the reception status information with the receivable information.
- the receivable information is information indicating a broadcast program (channel) that can be received by the receiver 51 at the current position determined by the server 100. By this comparison, all broadcast programs (channels) that can be received by the receiver 51 at the current current position are detected.
- the selection unit 114 sets (presets) all broadcast programs (channels) detected by the comparison unit 113 and that can be received by the receiver 51 at the current current position. Specifically, the tuner unit 53 sets a selectable channel. There may be multiple channels that can be selected. As a result, even when the vehicle 50 moves, the receiver 51 can eliminate the need to search for a receivable channel for each destination (channel seek), and can select a broadcast program (channel) that can be always received. , You will be able to improve the reception rate. Since the channel seek is unnecessary, the problem that reception is impossible during seek can be avoided.
- FIG. 5 is a block diagram showing the internal configuration of the server.
- the server 100 receives (receives) the reception status information described above from the vehicle 50 and creates a database of the reception status information at various current positions.
- This server 100 functions as a reception state management device for a plurality of vehicles 50.
- the server 100 includes a reception state information input unit 121, a reception state management unit 122, and a receivable information output unit 123 in addition to the communication unit 101 and the database (DB) 102 described above. Yes.
- the reception status information input unit 121 is a reception status message transmitted from the vehicle 50 via the communication unit 101.
- the state information is output to the reception state management unit 122.
- the reception state management unit 122 manages the reception state (for example, BER) of the reception channel of the received reception state information for each current position (latitude and longitude).
- the management information managed by the reception state management unit 122 is stored and held in the database 102 using a table or the like. Each time a new current position (latitude / longitude) is input, the database 102 holds a new reception state related to this reception channel by adding a table or the like.
- the reception state management unit 122 includes an update unit 122a and an extraction unit 122b. Each time the reception state information is input, the update unit 122a updates (constructs) the database 102 using the latitude and longitude of the reception state information and the reception channel as keys. In addition, when the input reception state information is already stored in the database 102, the extraction unit 122b includes a broadcast program (channel) that can be received at the same latitude and longitude included in the reception state information. Receivable information indicating is output. This receivable information is transmitted from the receivable information output unit 123 via the communication unit 101 to the vehicle 50 that has output the reception state information.
- FIG. 6 is a flowchart showing the reception state information generation and transmission processing executed by the reception apparatus.
- the processing to be performed on the vehicle 50 side in order to construct the database 102 of the server 100 is described.
- the GPS unit 72 detects the current position.
- the information input unit 110 of the control unit 75 acquires the current position information (latitude and longitude) at a predetermined timing (step Sl l).
- the reception state is acquired from the receiver 51 (step S12).
- the signal and information (S1 to S4) indicating the reception state are the reception power signal S1 and the like related to the channel being received, and can be acquired not limited to one but plural.
- This timing is performed when the reception state of the broadcast program (channel) that is currently received falls below a predetermined threshold.
- the present invention is not limited to this, and may be performed at predetermined intervals, when the speed of the vehicle 50 greatly fluctuates (for example, when stopped), when the vehicle 50 passes an intersection, or the like.
- the reception state information generation unit 111 of the control unit 75 receives reception state information in which current position information (latitude and longitude) is associated with reception state information (S1 to S4) related to the received reception channel. Generate (step S13).
- This reception state information is, for example, the current position of the vehicle 50 (Latitude and longitude), a reception channel, and a received power signal S1 are associated with each other.
- the control unit 75 transmits the reception state information to the server 100 via the communication unit 73 (step S14), and ends the process.
- FIG. 7 is a flowchart showing database construction processing in the server.
- the reception status information input unit 121 of the server 100 receives the reception status information via the communication unit 101 (step S21). Then, the reception state management unit 122 detects the current position included in the received reception state information (step S22). This current position is a reception position in a certain vehicle 50 and is referred to as a reception position on the database 102.
- the reception state management unit 122 determines whether or not the database 102 has data regarding the reception position (step S23). If there is no data regarding this reception position (step S23: No), the updating unit 122a creates new data. Specifically, a new reception position field is created, and the value of the channel S1 and reception power signal S1 included in the received reception status information is created in this new field (step S24). If there is data relating to this reception position in the database 102 (step S23: Yes), an average value with the data of the same reception position already stored is calculated and stored. Specifically, the past received power value at the same reception position and the current received power value are averaged using a predetermined arithmetic expression and stored as the new received power average value (steps). S25), the process ends. In this case, the past received power value may be weighted for calculation.
- step S25 is not limited to the calculation of the average value.
- the contents of the database 102 may not be updated. It can also be configured to always update to new data.
- all maximum values and minimum values of past data and new data can be stored, and an average value of these maximum values and minimum values can be calculated and stored.
- FIG. 8 is a chart showing an example of the contents of the database.
- the database 102 stores the BER value for each channel (CH) based on the received reception status information.
- the horizontal axis is the reception position (latitude / longitude) 131 and the received power items 132 and 133 for each channel (CHI, CH2).
- a plurality of reception position items 134 are provided on the vertical axis. This vertical axis term The number 134 increases each time reception status information of a new reception position is received.
- the received power value of CH1 in latitude and longitude force E139. 28. 32. 1, N35. 55. 46.3 is “ ⁇ 40 (dBm)”, and the received power value of CH2 is “50 ( dBm) ".
- the value of the received power signal S1 for each CH is stored, but in addition to this, for each reception position, a plurality of modulation information S2, BER signal S3, broadcast station information S4, etc. It depends on the configuration for storing information.
- FIG. 9 is a flowchart showing reception channel setting processing in the reception apparatus.
- the communication input / output unit 112 of the control unit 75 of the vehicle 50 receives the receivable information transmitted from the server 100 via the network 80 (step S31).
- the timing for receiving the receivable information is when the vehicle 50 transmits a reception status information (step S14 in FIG. 6) and then responds from the server 100.
- receivable information is periodically transmitted from the server 100 at a predetermined time interval, and can be received.
- the receivable information transmitted from the server 100 is receivable information at the reception position corresponding to the current position of the vehicle 50.
- the comparison unit 113 of the control unit 75 determines whether there is a channel (CH) that can be received at the current current position (latitude and longitude) based on the received receivable information! S32).
- the receivable channel refers to a channel that the vehicle 50 has received and a plurality of other channels that the vehicle 50 can newly receive.
- the comparison unit 113 sets a reception power threshold value of a receivable channel in advance. For example, assume that this threshold value is set to 60 dBm. In this case, all channels with received power of 60 dBm or more obtained as receivable information are judged as receivable channels. In this way, when there is a receivable channel (step S32: Yes), the selector 114 sets this receivable channel (CH) to the tuner unit 53 of the receiver 51 (step S32: Yes). S33), the process is terminated.
- the number of channels set at this time is not limited to one and may be plural.
- step S32 the reception channel is not set (for example, the currently received channel is not changed), and the process is terminated. .
- the receivable information in step S31 described above is not limited to the receivable information at the receiving position that matches the current position of the vehicle 50, but is configured to receive receivable information at a plurality of receiving positions around the current position. You can also.
- the server 100 transmits the reception position corresponding to the current position and the receivable information around the reception position to the vehicle 50 side based on the information on the current position (latitude and longitude) of the vehicle 50.
- FIG. 10 is a diagram illustrating an example of receivable information. It is assumed that the receivable information 140 transmitted by the server 100 includes a received power value 141 at the current position of the vehicle 50 and a received power value within a predetermined range of front, rear, left, and right with respect to the current position. . In the figure, the current position (reception position) is placed in the center, and a total of nine received power values in three rows in the horizontal direction and three rows in the front and rear direction around the current position are schematically shown.
- the comparison unit 113 of the control unit 75 receives nine received power values including the current position. Then, a reception position having a reception power of 60 dBm or more which is a threshold value is detected. In the example shown in the figure, it is determined that the portion of the range 142 indicated by hatching can be received.
- the control unit 75 can output the display information to the output unit 60 with the range 142 as a receivable range. At each reception position included in these ranges 142, the receivable channels (CH) are displayed simultaneously. As a result, it is possible to notify that there is a receivable channel around the current position of the vehicle 50. For example, even if there is no channel that can be received at the current current position, it is possible to notify in advance that there is a channel that can be received by moving the vehicle 50.
- the comparison unit 113 uses only the received power as information for determination in the process of step S32. Make a good judgment. It should be noted that the comparison unit 113 determines the result of the comparison determination when there is a receivable channel included in the receivable information received from the server 100 and the reception state indicated by the reception state information is extremely poor. As an alternative, it is possible to detect a malfunction of the receiver 51 and output the display information to the output unit 60. it can.
- the receivable information 140 transmitted by the server 100 includes a received power value 141 at the current position of the vehicle 50 and received power values within a predetermined range of front, rear, left and right with respect to the current position.
- the comparison unit 113 of the control unit 75 determines a receivable channel based on a plurality of reception power values around the current position indicated by the receivable information 140.
- the received power at the current current position shown in FIG. 10 is 70 dBm, and stable reception is not possible.
- the average value of the received power of the received power values in a predetermined range of front, rear, left and right with respect to the current position is obtained.
- the comparison unit 113 determines that this reception channel is receivable.
- the comparison unit 113 receives the received power of each of the plurality of channels at the current position as receivable information from the server 100. Then, the comparison unit 113 receives the value of the received power (signal S1) of the channel received by the receiver 51 of the vehicle 50 and the same received channel at the current position stored in the database 102 of the server 100. The difference from the power value is obtained as an offset. Next, a value obtained by subtracting the value power offset of the received power of the other channel included in the receivable information transmitted from the server 100 is calculated as the estimated received power value of the other channel. If the estimated power value is equal to or greater than a predetermined threshold (for example, ⁇ 60 dBm), it is determined that the other channel can be received by the receiver 51 of the vehicle 50, and the selection unit 114 sets this channel.
- a predetermined threshold for example, ⁇ 60 dBm
- the selection unit 114 can prioritize selection and reception of a channel that the receiver 51 is receiving. In this case, it is determined whether or not to continue the channel being received based on the information on the channel currently being received from the results determined in step S32. For example, the receivable information shown in FIG. If the channel is currently being received, the received power in the moving direction of the vehicle 50 is extracted, and if all the received power values in the moving direction are equal to or greater than a predetermined threshold (for example, 60 dBm), the reception is continued. To do.
- a predetermined threshold for example, 60 dBm
- the vehicle 50 side is configured to transmit to the server 100 receivable information including information on the current position and information on the reception channel and the reception state.
- the present invention is not limited to this, and the vehicle 50 side can be configured to transmit only the current position information to the server 100.
- the server 100 is configured to transmit the receivable information including the receivable channel and the reception state information at the current position of the vehicle 50 based on the received current position information.
- the receiver 51 can always set and prepare a broadcast program that can be viewed as much as possible regardless of changes in the reception environment.
- a plurality of receivable broadcast program channels can be set by the selection unit 114, and the user can select a desired broadcast program channel from the power of the plurality of channels set. You can select and view them arbitrarily.
- the process of selecting a channel that can be received while the vehicle 50 is traveling has been described.
- the vehicle 50 is scheduled to travel before the vehicle 50 travels.
- it is configured to set a receivable channel on the planned travel route.
- the configuration of the control unit 75 of the vehicle 50 that receives receivable information from the server 100 and sets a receivable channel is the same as that of the first embodiment.
- FIG. 11 is a flowchart showing a receiving channel setting process when searching for a planned travel route.
- the GPS unit 72 searches for an efficient planned route with reference to the map information (step S41).
- the display information of the searched planned travel route is output to the output unit 60.
- An effective travel route is, for example, a route that can reach the destination in the shortest time or the shortest distance.
- the control unit 75 transmits information (latitude and longitude) of a plurality of current positions of the vehicle included in the searched planned travel route (step S42). Strictly speaking, it is not the current position of the vehicle but the planned position. Since the planned travel route is a continuous road to the destination, sending continuous current location information results in an enormous amount of data.Therefore, this planned travel route is divided for each predetermined distance, Desirably, information (latitude and longitude) and intersection (node) information (latitude and longitude) should be within a specified number.
- the reception state management unit 122 accesses the database 102, reads out receivable information on the planned travel route, and transmits it to the vehicle 50.
- the control unit 75 of the vehicle 50 receives receivable information on the planned travel route (step S43).
- the comparison unit 113 determines a receivable channel on the planned travel route based on the received receivable information.
- the selection unit 114 sets a receivable channel on the planned travel route to the receiver 51 (step S44).
- the selection unit 114 stores, in the memory 76, information that associates the scheduled travel route with the channels that can be received on the planned travel route.
- the information stored in the memory 76 can be output to the output unit 60 before or after the vehicle 50 starts traveling.
- the channel setting timing of the selection unit 114 is set by reading out a receivable channel for each current position from the memory 76 every time the current position changes after the vehicle 50 starts running.
- a receivable channel can be set on the planned travel route before the vehicle 50 starts traveling.
- the selection unit 114 sets a plurality of receivable channels, and the user selects a plurality of channels set by the selection unit 114. A desired channel is selected from among the channels.
- FIG. 12 is a block diagram of a configuration of the receiving apparatus according to the third embodiment.
- the same components as those described in the first embodiment (see FIG. 3) are denoted by the same reference numerals and the description thereof is omitted.
- the broadcasting station server 150 is newly provided in the third embodiment.
- the broadcast station server 150 includes a communication unit 151 and a broadcast program database (DB) 152, and is connected to the server 100 described above via a network 81.
- DB broadcast program database
- the broadcast station server 150 stores program information such as broadcast program channels, broadcast times, and program contents in the broadcast program database 152.
- the program information is equivalent to a general-purpose electronic program guide (EPG).
- the broadcast program database 152 stores broadcast program modulation information. For convenience, it is called program information including modulation information.
- the program information is transmitted to the server 100 via the communication unit 151 in response to a request from the server 100.
- the server 100 When transmitting receivable information to the vehicle 50, the server 100 requests the broadcast station server 150 for program information corresponding to the reception channel to be transmitted, and the program information returned from the broadcast station server 150. Is transmitted to the control unit 75 of the vehicle 50. As a result, the control unit 75 of the vehicle 50 can acquire information on a channel that can be received at the current position as receivable information and program information that is broadcast on this channel.
- the program information acquired by the control unit 75 can be output to the output unit 60 as information on a list indicating receivable channels, for example. The user can easily select a channel based on the program guide displayed on the output unit 60.
- the comparison unit 113 sets the determination condition so as to be optimal for each type of modulation of the broadcast radio wave based on the modulation information. Can be set.
- This judgment condition includes, for example, information suitable for changing the modulation type (for example, the received power signal S1) among the information (signals) S1 to S4 in which the above-mentioned threshold value is changed and each component of the receiver 51 is also output. Will be able to select.
- the reception state information is transmitted from the vehicle 50 side to the server 100, and the server 100 side receives receivable information for each current position of the vehicle 50 stored in the database 102.
- Information is sent to the vehicle 50.
- the plurality of vehicles 50 can access the central server 100 to receive receivable information for each current position of the vehicle 50 on the vehicle 50 side and select receivable channels.
- the configuration of the database 102 provided in the servo 100 may be provided in the vehicle 50. In this case, even if the vehicle 50 does not access the server 100, a receivable channel can be selected by referring to the database 102 of the own vehicle.
- the vehicle 50 having the configuration of the database 102 can also transfer the contents of the database 102 to the server 100.
- the vehicle 50 side force can also construct the contents of the database 102 by transmitting the reception state information to the database 102 of the server 100.
- the vehicle 50 side force can also be configured to pay a predetermined information provision fee to the user who owns the receiver 51 each time transmission status information is transmitted to the server 100.
- the server 100 is configured to have a user information database (not shown) that stores user information for holding the receiver 51 (or the vehicle 50) in advance. Each time the server 100 receives the reception status information, the user of the receiver 51 (or vehicle 50) that transmitted the reception status information is extracted from the user information database, and a predetermined information provision fee is paid to this user. Execute the process. Payment of the information provision fee is performed by transferring the amount to the user's account preset in the user information database. In addition, it can be configured to return a point equivalent to the amount of money.
- the vehicle 50 side when the vehicle 50 side power also requests transmission of receivable information from the database 102 of the server 100, it can be configured to collect (charge) an information provision fee from the user.
- this vehicle 50 side receives the receivable information from the server 100 once.
- the payment of the provision fee and the number of charges are the same.
- the vehicle 50 side does not transmit the reception status information but transmits only the current position to the server 100 and receives the receivable information from the server 100, only the information provision fee is charged. become. Note that the payment amount for one information provision fee may differ from the charge amount.
- the control unit 75 of the receiving device mounted on the vehicle 50 can receive signals. This may be done on the power server 100 side configured to determine and select the correct channel. In this case, the control unit 75 on the vehicle 50 side sets a receivable channel included in the receivable information transmitted by the server 100.
- the force described with the vehicle 50 as an example of the moving body is not limited to this, and the present invention can be applied to a receiving device mounted on various moving bodies such as trains and ships. It can also be applied to portable electronic devices equipped with receivers and mobile phones.
- a receivable channel can be selected at the moved position, and a receivable channel is always selected immediately. Will be able to. This makes it possible to provide a receiving device with excellent operability.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- General Engineering & Computer Science (AREA)
- Circuits Of Receivers In General (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
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JP2006543087A JPWO2006043657A1 (ja) | 2004-10-22 | 2005-10-21 | 受信装置 |
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Cited By (3)
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JP2008078875A (ja) * | 2006-09-20 | 2008-04-03 | Denso Corp | 放送受信装置 |
JP2012147157A (ja) * | 2011-01-11 | 2012-08-02 | Jvc Kenwood Corp | 放送受信装置、放送局情報管理装置、放送局情報管理システムおよび放送局情報管理方法 |
WO2014192493A1 (ja) * | 2013-05-27 | 2014-12-04 | クラリオン株式会社 | 受信装置および受信システム |
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