CN100448273C - Receiving device for moving object - Google Patents

Receiving device for moving object Download PDF

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Publication number
CN100448273C
CN100448273C CNB2005100937547A CN200510093754A CN100448273C CN 100448273 C CN100448273 C CN 100448273C CN B2005100937547 A CNB2005100937547 A CN B2005100937547A CN 200510093754 A CN200510093754 A CN 200510093754A CN 100448273 C CN100448273 C CN 100448273C
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CN
China
Prior art keywords
service area
channel
base station
program
watching
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Expired - Fee Related
Application number
CNB2005100937547A
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Chinese (zh)
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CN1744680A (en
Inventor
江原三起夫
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Faurecia Clarion Electronics Co Ltd
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CHANAWEI INFORMATION Co Ltd
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Publication of CN1744680A publication Critical patent/CN1744680A/en
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Publication of CN100448273C publication Critical patent/CN100448273C/en
Expired - Fee Related legal-status Critical Current
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    • 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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H04N5/505—Invisible or silent tuning
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
    • G08G1/0969—Systems involving transmission of navigation instructions to the vehicle having a display in the form of a map
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
    • 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
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • 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
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • 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
    • H04N21/6112—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving terrestrial transmission, e.g. DVB-T

Abstract

A receiver device for a moving object receives the digital ground broadcasting, which comprises: a present site detector to detect the present position of the moving object; a first tuned unit; a second tuned unit; a channel determining unit to obtain the data relative to the digital ground broadcasting of the visual channel, a second service area is adjacent to a first service area including the detected present position; a channel to provide the program visual in the second service area and same with the program viewed by the second tuned unit based on the obtained data; and a channel switching unit to switch the channel viewed by the second tuned unit from the present program to the channel determined by the channel determining unit.

Description

The receiver that is used for mobile object
Technical field
The present invention relates to a kind of receiver that is used for mobile object, it can receive digitalized ground broadcasting.
Background technology
The known television receiver that mobile object (mobile unit or moving body) special use is arranged in the correlative technology field, its utilization is stored in information in the memory device of a navigation system, that be used for the television broadcasting base station, can allow to automatically switch to the channel of identical broadcasts base station or branch's broadcast base station (affiliate broadcastingstation), thereby can allow to watch TV programme continuously and without any interrupting (Japanese kokai publication hei patent publication No. No.H07-284030 (1995)).
In recent years be in transition period from the analog broadcasting to the digital broadcasting based on the broadcasting on ground.Under such environment, the frequency of broadcast base station that digitalized ground broadcasting probably occurs carrying out is by the situation of accidental change, and perhaps the quantity of broadcast base station is owing to having introduced the situation that new broadcast base station increases.Like this, the television receiver that is used for mobile object described in the Japanese kokai publication hei patent publication No. No.H07-284030 can not adapt to these variations.Specifically, can produce such problem, promptly because the frequency change of broadcast base station or branch's broadcast base station can not realize watching TV programme continuously without any interruption, although perhaps because the increase of broadcast base station quantity, can watch continuously, but can not realize without any interruptedly watching TV programme continuously.
Summary of the invention
According to a first aspect of the invention, the receiver that is used for mobile object that receives digitalized ground broadcasting comprises: the current location detecting unit is used to detect the current location of described mobile object; First tuned cell; Second tuned cell; The channel determining unit, it is by using described first tuned cell, the data that the digitalized ground of the channel that obtains and can watch in second service area is broadcast related, and determine to be provided at the channel of the identical program of the program that can watch in second service area and watch with current use second tuned cell based on fetched data, described second service area is adjacent with first service area that comprises detected current location; The channel switch unit, its channel of watching with second tuned cell switches to the channel of being determined by described channel determining unit from the channel of the current program of watching.
According to a second aspect of the invention, at the receiver that is used for mobile object according to first aspect, preferably: provide an overlapping service area to enter detecting unit in addition, the current location that detects mobile object enters an overlapping service area, and this overlapping service area is formed by the lap of first service area and second service area; When entering current location that detecting unit detects mobile object by overlapping service area when entering described overlapping service area, described channel determines that method obtains the data relevant with the DTB Digital Terrestrial Broadcasting of the channel that can watch by using first tuned cell in second service area; Described channel switch unit switches to the channel of being determined by described channel determining unit to the channel of watching with second tuned cell from the current channel of program of watching when detecting predetermined condition.
According to a third aspect of the invention we, according to first or the receiver that is used for mobile object of second aspect, preferably: described channel determining unit is determined described channel based on the electronic program guides (EPG) that is included in the digitalized ground broadcasting.
According to a forth aspect of the invention, according to first or the receiver that is used for mobile object of second aspect, preferably: described channel determining unit is based on the data broadcast related with digitalized ground, determines the channel of the broadcast base station that the broadcast base station watched with current use second tuned cell is identical.
According to a fifth aspect of the invention, according to first or the receiver that is used for mobile object of second aspect, preferably: described channel determining unit is broadcasted related data based on digitalized ground, determine the channel of branch's broadcast base station, this branch's broadcast base station is branch's broadcast base station of the broadcast base station watched of current use second tuned cell.
According to a sixth aspect of the invention, according to the receiver that is used for mobile object aspect the 4th or the 5th, preferably: described channel determining unit is determined described channel based on the base station IDs number that is included in the digitalized ground broadcasting.
According to a seventh aspect of the invention, at the receiver that is used for mobile object according to second aspect, preferably: one first electric field detecting unit further is provided, is used to detect the electric field strength of the broadcasting wave of using the tuning digitalized ground broadcasting of first tuned cell; With one second electric field detecting unit, be used to detect the electric field strength of the broadcasting wave of using the tuning digitalized ground broadcasting of second tuned cell; Wherein predetermined condition comprises a condition, in this condition, the electric field strength of channel of using the detected current program of watching of the described second electric field strength detecting unit is less than by the detected electric field strength by the determined channel of described channel determining unit of the described first electric field detecting unit.
According to an eighth aspect of the invention, at the receiver that is used for mobile object, preferably: a map datum acquiring unit further is provided, is used to obtain the map datum of the service area information that comprises digitalized ground broadcasting according to second aspect; Wherein, described overlapping service area enters detecting unit based on the information of the service area that is included in the digitalized ground broadcasting in the described map datum with by the current location of the detected mobile object of described current location detecting unit, detects the mobile object current location and enters by the formed overlapping service area of the lap of first service area and second service area.
According to a ninth aspect of the invention, at the receiver that is used for mobile object, preferably: a map datum acquiring unit further is provided, is used to obtain the map datum of the information of the service area that comprises digitalized ground broadcasting according to first aspect; Wherein, described map datum is included in the information of the channel of broadcast base station that each service area can watch and these broadcast base stations; And further provide a updating block, it obtains the related data of the digitalized ground broadcasting of the channel that can watch by using first tuned cell in second service area, determine the broadcast base station that in second service area, can watch based on the data that obtain, and update package is contained in the information of the channel of the broadcast base station that can watch at second service area in the described map datum and these broadcast base stations.
According to the tenth aspect of the invention, according to any one the receiver that is used for mobile object aspect from first to the 9th, preferably: a path detection unit further is provided, detects the path of mobile object; With an adjacent service area determining unit,, determine described second service area adjacent with described first service area based on by detected path, described path detection unit.
According to an eleventh aspect of the invention, the receiver that is used for mobile object of any one aspect basis from first to the tenth, preferably: next operation selector button display unit further is provided, when not determining that one can be provided at that second service area can be watched and with the current channel of watching the identical program of program the time, show the button that is used to select next operation by described channel determining unit.
According to a twelfth aspect of the invention, the receiver that is used for mobile object of any one aspect basis from first to the tenth, preferably: further provide one can watch the broadcast base station display unit, when not determining that one can be provided at that second service area can be watched and with the current channel of watching the identical program of program the time, be presented at the broadcast base station that can watch in second service area adjacent with first service area that comprises current location by described channel determining unit.
According to a thirteenth aspect of the invention, according to the receiver that is used for mobile object aspect the tenth, preferably: when not determining that one can be provided at that second service area can be watched and with the current channel of watching the identical program of program the time by the channel determining unit, carry out path detection up to a service area, in this service area, have and the current identical program of watching of program of watching.
According to a fourteenth aspect of the invention, the receiver that is used for mobile object of any one aspect basis from first to the tenth, preferably: further provide one to postpone the unit, when not determining that one can be provided at that second service area can be watched and with the current channel of watching the identical program of program the time by described channel determining unit, the output image and the sound of digitalized ground broadcasting are stopped, enter a service area up to described mobile object, have in this service area and the current identical program of watching of program of watching.
According to the present invention, even under the situation of the frequency shift that situation that the quantity of the broadcast base station of digitization of broadcasting terrestrial broadcasting increases or broadcast base station utilize, the homogeny that also can farthest keep program also can be watched this program when service area changes during moving.
Below will be with reference to the accompanying drawings, the relation between the above every and preferred embodiment is described.The corresponding current location checkout gear 14 of current location detecting unit.The first service area corresponding with service district A that comprises current location, the second service area corresponding with service district B adjacent with first service area.The corresponding tuner 23 of corresponding tuner 24, the second tuned cells of first tuned cell.The corresponding receiving element control circuit 212 of channel determining unit, the corresponding tuner control circuit of channel switch unit.The corresponding tuner 23 of corresponding tuner 24, the second electric field strength detecting units of the first electric field strength detecting unit.Next control selector button display unit corresponding button 71 to 79 and button 710 to 715.Can watch corresponding broadcast base station button 71 to 79 of broadcast base station display unit and broadcast base station button 710 to 712.Postpone the corresponding hold button 714 in unit.Here, need to prove, more than only be used for illustrative purposes about the description of corresponding relation, should not be construed as the present invention and limited by above-mentioned listed corresponding relation.
Description of drawings
Fig. 1 is the block diagram of the structure of the guider in the explanation specific embodiment of the present invention.
Fig. 2 is the block diagram of the structure of explanation digitalized ground broadcast reception unit.
Fig. 3 is that guider one same program that is used for being described in as the specific embodiment of the invention is watched the flow chart of the process of processing.
Fig. 4 is the chart that is used to describe electronic program guides (EPG).
Fig. 5 is that guider one same program that is used for being described in as the specific embodiment of the invention is watched the sub-process figure of the process of processing.
Fig. 6 is a shown display screen when same program can not be watched continuously.
Fig. 7 is a shown display screen when selecting corresponding indication menu button.
Fig. 8 describes in user's in an embodiment according to the present invention position and the guider same program to watch the schematic diagram of the relation between the processing.
Fig. 9 be user's position is described and the electric field strength that detects by tuner between the curve chart of relation.
Figure 10 is a chart of having described the renewal of broadcast base station service area information.
Embodiment
The structure of the guider according to a particular embodiment of the invention as shown in Figure 1.Guider shown in Figure 1 outside displayed map and so on, can receive and show digitalized ground broadcasting except common navigation feature.Guider 1 comprises control circuit 11, read-only memory (ROM) 12, random asccess memory 13 (RAM), current location checkout gear 14, video memory 15, display 16, loud speaker 17, input equipment 18, digital broadcast reception unit 19 and CD drive 110.CD drive 110 can the load store map datum DVD-ROM 111, map datum comprises the broadcast base station area information, is used for the map data presented, is used for the data of path detection and so on.Be used for the map data presented and comprise from broad regions more and watch the various map datums of the multiple ratio of scrutinizing (closest look), and can change the ratio of the map that just show according to operator's requirement.
The broadcast base station area information comprises service area information, and indication is from the zone of the broadcasting wave arrival of radio wave transmission tower, and wherein the radio wave television tower is with the form transmission broadcasting wave of digitalized ground broadcasting.Here so-called digitalized ground broadcasting is meant the broadcasting by the digitized content of terrestrial broadcasting broadcast program.In digitalized ground broadcasting, the broadcasting wave of a plurality of broadcast base stations is launched from a radio wave transmission tower.
Control circuit 11 comprises microprocessor and peripheral circuit thereof, uses RAM 13 as working space, carries out the control program that is stored among the ROM 12 and carries out various types of controls.Carry out certain path and survey when handling based on being stored in map datum among the DVD-ROM 111 when control circuit 11, this result is displayed on the display 16 as recommendation paths.
Current location checkout gear 14 is devices that are used to detect the current location of vehicle, comprises, for example, vibratory gyroscope 14a is used to detect the moving direction of vehicle; Automotive speed sensor is used to detect car speed; Global positioning system (GPS) transducer 14c is used to detect the gps signal from gps satellite etc.Guider 1 is determined the indication range of map, the starting point of path detection etc. based on the current location by current location checkout gear 14 detected vehicles, and shows determined current location on map.
The view data that video memory 15 storages will show on display 16.View data comprises data and the various types of graph data that is used to draw road-map, and these data are based on that the map datum that is stored among the DVD-ROM 111 suitably produces, and CD drive 110 can read the map datum that is stored among the DVD-ROM 111.Guider 1 uses the view data that produces like this to come displayed map etc.
Display 16 is based on the various information such as map datum,, be that the operator of guider 1 provides various types of information with the form that shows, such as the road-map around the vehicle location.Display 16 also can show the image information of the digitalized ground broadcasting that is received by digitalized ground radio unit 19.Loud speaker 17 provides various types of information by sound for the operator based on the various types of information such as map datum, such as the map around the vehicle location.Loud speaker 17 also can be exported the voice messaging of the digitalized ground broadcasting that is received by digitalized ground broadcast reception unit 19.
The destination that input equipment 18 provides an input switch to set vehicle for the operator, this waits by control panel, remote controllers and realizes.The operator can be according to the indication of the screen of display 16, perhaps indicates operation input apparatus 18 selecting his/her destination from the sound of loud speaker 17, thereby finishes the setting of destination.Input equipment 18 also can be selected the broadcast base station that received by digitalized ground broadcast reception unit 19.
In case the operator has set the destination, guider 1 carries out an algorithm operating based on certain algorithm, is used for by finding a suitable path that arrives the destination as starting point by current location checkout gear 14 detected current locations.The path that obtains like this (be called later on and detect the path) can for example change foreground color etc. by changing display mode, uses to make a distinction to such an extent that mode shows with other roads.By this structure, the operator can tell the detection path in the map on display screen.
Guider 1 also comes guided vehicle by display screen, sound etc. for the operator provides the indication of direction of advance, thereby vehicle can advance according to detecting the path.
Digitalized ground broadcast reception unit 19 can receive digitalized ground broadcasting, and the broadcasted content that receives is outputed to display 16 or loud speaker 17.CD drive 110 can read map datum with displayed map on display 16 from the DVD-ROM that loads.Here, map datum also can be read by other storage mediums except DVD-ROM, such as CD-ROM, and hard disk and so on.
Below, with reference to figure 2 explanation digitalized ground broadcast reception unit 19.Digitalized ground broadcast reception unit 19 comprises antenna 21 and 22, tuner 23 and 24, detuning unit 25 and 26, tuner control circuit 27, decoding unit 28, decoding unit RAM 29, NTSC (national television system committee) coding unit 210, audio signal digital-to-analogue (DA) converting unit 211, receiving element control circuit 212, receiving element ROM 213 and communication unit 214.Here, the part that is comprised by dotted line 215 is called fore-end 215, and the part that dotted line 216 is comprised is called back segment part 216.
Antenna 21 and 22 has the function that receives digitalized ground broadcasting.Tuner 23 and 24 has the function of the broadcasting channel that change receives by antenna 21 and 22, detects the function by the electric field strength of antenna 21 and 22 signals that received, with the function that analog signal conversion is become digital signal.Detuning unit 25 and 26 has in the past converting the function that the signal of digital signal carries out the digital solution modulation to by tuner 23 and 24.Here, channel means level radio frequency band, distributes to each broadcast base station and propagates their DTB Digital Terrestrial Broadcasting.
Tuner control circuit 27 has the function of setting changing channel in tuner 23 and 24, the signal that comes self- tuner 23 and 24 is synthesized the function that also synthetic signal is outputed to the function of decoding unit 28 and only a signal of selecting is outputed to decoding unit 28 from the signal of tuner 23 and 24.Output to the waveform that decoding unit 28 has improved the square wave of the digital signal that outputs to decoding unit 28 by and a synthetic signal synthetic the signal that comes self- tuner 23 and 24.
Decoding unit 28 has compression and decompression and is included in MPEG compressed digital picture intelligence and the digital audio and video signals in the digital terrestrial and extracts the not function of compressed signal.Decoding unit RAM 29 has as the function that is used for carrying out at decoding unit 28 working space of compression and decompression processing.NTSC coding unit 210 has a digital image signal that extracts and converts the simulation output image signal that is consistent with the NTSC system in decoding unit 28, and the analog signal that is converted to is outputed to the function of display 16.Audio signal D/A change-over circuit 211 has a digital audio and video signals that extracts and converts simulated audio signal in decoding unit 28, and the analog signal that is converted to is outputed to the function of loud speaker 17.Although, also can adopt line-by-line inversion system (PAL), the RGB that PC (PC) is adopted, the high-definition multimedia interface (HDMI) that digital video interface (DVI) household electrical appliance are adopted etc. with the example of NTSC system as image output.
Receiving element control circuit 212 has the function of the operation of control tuner control circuit 27 and/or decoding unit 28.The channel that scans a tuner of being selected by tuner control circuit 27 under the control of receiving element control circuit 212 from tuner 23 and 24 detects the channel that can receive.Function communication unit 214 has input outputs to this signal receiving element control circuit 212 then from the output signal of control circuit 11 function.
Below, will be with reference to the flow chart description of figure 3 detailed process as the automatic conversion process of channel in the guider 1 of embodiments of the invention.
In the incipient stage of operation, guider receives digitalized ground broadcasting by tuner 23 program of digitalized ground broadcasting is offered the beholder with antenna 21.The user of guider 1 (being called " user " later on) takes a mobile object (mobile unit or moving body), along the detection path movement of being calculated in path detection.
In step S301, obtain the information of current location.The information of this current location obtains by current location checkout gear 14.Below, in step S302, based on the broadcast base station area information of storage among the DVD-ROM 111 and the current location information that in step S301, obtains, obtain to receive the service area of the digitalized ground broadcasting of watching channel at present, comprise the information of service area (being called " service area A " later on) of the digitalized ground broadcasting of current location in other words.
In step S303, based on the information in the broadcast base station zone of storage among the DVD-ROM 111 and information and the detection path that in step S301, obtains, the service area (being called " service area B " later on) of definite digitalized ground broadcasting that is entering subsequently about current location.In other words, in the service area adjacent with service area A, the service area that detects the path process is called service area B.In step S304, determine based on the information of current location and position and the scope of service area A and B whether the user is positioned at the coincidence zone of service area A and B (being called " overlapping service area " later on).If the result who obtains in the step 304 is sure, handles so and proceed to step S305.If the result negates then to handle turning back to step S301.
In step S305, from digitalized ground broadcasting, obtain the id number of the broadcast base station that the user can receive in service area B and about the information of the electronic program guides (EPG) of broadcast base station by tuner 24.The id number of broadcast base station is a catchword of distributing to each broadcast base station, for example, " JOAK-DTV " distributes to Nippon Hoso Kyokai (NHK, Japan BroadcastingCorporation) id number of Tokyo digital television. broadcast base station is included in the data of broadcasting about digitalized ground, and picture intelligence and audio signal in digitalized ground broadcasting transmit.
EPG with broadcast base station is the rendition list of being broadcasted by broadcast base station as shown in Figure 4.Airtime and programme content in one day of the title of broadcast program, program all are included in the information of EPG.The EPG of broadcast base station also is included in the data about digitalized ground broadcasting that transmit picture intelligence and audio signal in the digitalized ground broadcasting simultaneously.
The id number of the broadcast base station that the user can receive in service area B and obtain by following processes about the information of the electronic program guides (EPG) of broadcast base station.Under the control of receiving element control circuit 212, at the receiving channels of all wave band interscan tuners 24 of digitalized ground broadcasting.The scan operation of receiving channels that like this, can be by being used for tuner 24 detects the channel that is not included in the broadcast base station area information.Then, whenever receiving digitalized ground broadcasting time, extract the information of receiving channels, this receiving channels be included in the id number information of the broadcast base station in the broadcasting wave of digitalized ground broadcasting and the EPG information of broadcast base station.Then, the information stores of extraction is in RAM 13.Owing in this occasion, also surveyed and entered the channel that can receive before the overlapping service area, entered the channel that can receive before the overlapping service area so from then on remove.
Like this, obtained the information of the id number of the broadcast base station that the user can receive in service area B and the electronic program guides of broadcast base station (EPG), and the information stores that these obtained is in RAM1, thereby, current channel is being switched to another channel with before in service area B, watching identical program, can obtain being included in the form of the information of the id number of the broadcast base station that can watch among the service area B and the electronic program guides of broadcast base station (EPG).
In step S306,, judge whether service area is included in the broadcast base station that can watch in the service area B with the current identical broadcast base station of broadcast base station or the branch's broadcast base station watched based on the id number of the broadcast base station that in step S305, obtains.Here, suppose that identical TV programme can watch by identical broadcast base station or branch's broadcast base station.The judgement of identical broadcasts base station or branch's broadcast base station is by carrying out with reference to a database, and this database comprises the broadcast base station name and the respective broadcast base station IDs number of preparing in advance in tabulation that divide according to each branch's group of base stations.Comprising according to each branch's group of base stations comes the broadcast base station name of branch and the database storage of respective broadcast base station IDs number to be stored among the DVD-ROM 111 in RAM 13 or with map datum.If the result who judges among the step S306 is sure, handles so and proceed to step S307.In step S307, tuner 24 is set under the control of tuner control circuit 27, be tuned to the broadcast base station identical or the channel of branch's broadcast base station with the current broadcast base station of watching.
In step S308, detect the electric field strength of the broadcasting wave of the current broadcasting of watching by tuner 23, and survey the electric field strength of the broadcasting wave of the identical or branch's broadcast base station that can watch among the service area B by tuner 24.
In step S309, in tuner control circuit 27, compare by tuner 23 detected electric field strength with by tuner 24 detected electric field strength.If tuner 23 detected electric field strength are stronger, then will make negative judgement and get back to step S308.If tuner 24 detected electric field strength are stronger, then will make sure judgement and proceed to S310.
In step S310, the channel of being watched by tuner 23 by reception control circuit 212 is switched to the channel of the same program that can watch in service area B.Like this, identical with the current program of watching program will output to display 16 and loud speaker 17.
If in step S306, made the judgement negating, then advanced to step S311.In step S311, judge whether that by the EPG of the broadcast base station that in step S305, obtains channel is at broadcasting and the identical program of the current program of watching.Judge and to be based on the program title information that is included among the EPG and the information of program broadcasting time is made in one day.More particularly, whether judgement is by seeking the time identical in one day, having channel to make at the broadcasting program identical with the current program title of watching.If there is channel broadcasting identical program,, then advance to step S312 with making sure judgement.
In step S312, tuner 24 is set with under the control of tuner control circuit 27, selects the channel of broadcasting same program.
In step S313, detect the electric field strength of the broadcasting wave of the current program of watching by tuner 23, and detect the electric field strength of broadcasting wave of the channel of the radio wave tower program that launched, that broadcasting is identical with the current program of watching that is arranged in service area B by tuner 24.Then, carry out step S309.
If made the judgement negating in step S311, then process proceeds to the sub-process Fig. 1 among Fig. 5.The fact of making negative evaluation in step S311 means can not watch in service area B and the identical program of the current program of watching.Content below with reference to Fig. 5 descriptor flow chart 1.When sub-process Fig. 1 is illustrated in the service area variation, can not find under the situation of the program identical the processing of guider 1 with the current program of watching.
In step S501, the position of mobile object, service area A, can not watch with the service area of the program that the current program of watching is identical in service area B and be positioned at direction of advance, can watch the service area C of the program identical therein, be presented on the display 16 with current program along mobile object.This screen is watched before program can not watch current, by way of caution screen display.In addition, from loud speaker 17 warning of sounding, it will be impossible that expression will be watched same program simultaneously.In service area C, watch the judgement of the possibility of same program to be undertaken by following process.Because the broadcasting of the digitalized ground in service area C can not receive in service area A, so, judge whether service area is included in the broadcast base station of service area C with the base station broadcast base station identical or branch of playing the current program of watching based on the information that is included in the broadcast base station in the broadcast base station area information.
This time display 16 screen as shown in Figure 6.In the position 61 that has shown the user on the display 16, detect path 62, service area A 63, service area of watching 64 and service area C 65 with the program that the current program of watching is identical in service area B can not be provided.Following project is presented on the display with different forms: but service area A 63 shows as watching with the current same program viewing areas 63 of the identical program of program of watching; Can not watch with current watches zone 64 conducts of the identical program of program can not watch the same program of same program to show by viewing areas 64; Service area C 65 may show by viewing areas 65 as the same program that may watch same program.For example, show that same program can not be used red display by viewing areas 64 but same program viewing areas 63 usefulness are blue, same program may the green demonstration of viewing areas 65 usefulness.In addition, show next operation indication menu button 66, thereby the user can select next operation.Next operation indication menu button 66 is the buttons that are used to show next operation indication menu screen, and this next operation indication menu screen shows the menu that is used to select next operation.
In step S502, judge whether the user has selected next operation indication menu button 66.If judged result is sure, then handles and advance to step S503.If judged result negates then to handle and get back to step S502.
In step S503, next operation indication menu screen is presented on the display 16.Next operation that is presented on the display 16 is indicated menu screen as shown in Figure 7.On next operation indication menu screen, show the button that is used to select next operation that the user carries out.Be displayed on the display 16 with knob down: broadcast base station button 71 to 79 and 710 to 712 is used for can not viewing areas 64 one of selection can watching the base station in same program; Same program can be watched path detection button 713, but is used to detect the path that enters the same program viewing areas the earliest; Postpone or hold button 714, be used to stop to show that digitalized ground broadcasting up to watching identical program, shows the map screen of the indication that comprises vehicle location simultaneously; Navigation menu button 715 is used to the menu screen that stops to show the digitalized ground broadcast program and screen is switched to navigation system.
Can not can watch broadcast base station to determine as follows in the viewing areas 64 in same program.Based in step S305, having prepared and be stored in the channel among the RAM 13, that the user can receive in service area B and the id number of base station, obtain the id number and the channel of the broadcast base station watched in same program can not viewing areas 64.Then, based on the id number of broadcast base station, comprise according to the database of tabulation, the id number that is stored in broadcast base station among RAM 13 or the DVD-ROM 111 and the map datum of the broadcast base station of branch group of base stations classification by use and to determine the broadcast base station that to watch.Then, the broadcast base station button 71 to 79 and 710 of detected broadcast base station by separately shows to 712.When selecting broadcast base station button 71 to 79 and 710 after 712,, thereby can receive selected base station by the channel of tuner 23 settings corresponding to broadcast base station button 71 to 79 and 710 to 712 by input equipment 18.
In step S504, judge in the broadcast base station button of whether having selected on next operation indication menu screen, to show 71 to 79 and 710 to 712.When having selected any one button that shows on next operation indication menu screen, judged result is sure, thereby carries out the processing (step S505 to 508) corresponding to selected button.If result of determination is then got back to step S504 for negating.
In step S505, the demonstration of digitalized ground broadcasting is stopped up to watching identical program, shows the map screen of the indication that comprises vehicle location simultaneously.When having selected button 714, send instructions to receiving element control circuit 212 from control circuit 11, stop to the output of the NTSC of decoding unit 28 coding unit 210 with to the output of audio signal D/A change-over circuit 211, thereby stopped the output of digital terrestrial to display 16 and loud speaker 17.Then, on display 16, show the current vehicle location that forms by video memory 15 and map image on every side.On display 16, in the indication current vehicle location, continue to detect and whether can watch same program by using tuner 24.Thereby provide the service area of watching ability of same program can watch identical TV programme in case mobile object enters, map screen disappears, and the program of digitalized ground broadcasting outputs to display 16 and loud speaker 17.Yet, even, on map screen, show the information that the indication program finishes having arrived time that program finishes still can not successfully watch same program the time.
In step S506, detect the path that enters other same program viewing areas the earliest but carry out path detection.In case selected button 713, just carry out path detection again by following manner: with the current location of mobile object as starting point, but will be on the boundary line of same program viewing areas 65, with the current location of moving body on air line distance nearest point as impact point.In case carry out path detection again, just show map screen around the current location, mobile object of mobile object and the detection path that obtains by path detection again.Can watch the state of same program in case but mobile object enters same program viewing areas 65 with expression, the program of digitalized ground broadcasting just outputs to display 16 and loud speaker 17 once more.
In step S507, be received in the broadcasting of selected broadcast base station among the step S504 by tuner 23, the program that receives is outputed to display 16 and loud speaker 17.
In step S508, when having selected button 715, just stop the demonstration of the program of digitalized ground broadcasting, and on display 16 menu screen of show navigator system.
The user position in describing according to a particular embodiment of the invention below with reference to Fig. 8 and the same program of guider are watched the relation between the processing.But service area 81 and service area 82 are represented radio wave tower 87 from be present in each service area and 88 receiving area respectively.Service area 81 and service area 82 are overlapping at overlapping service area 83.The initial position of supposing mobile object is in the position 84 in the service area 81.Then, mobile object 82 advances from service area 81 towards service area along detecting the path, enters overlapping region 83, and is in position 86.
When the position of mobile object is between position 86 and 84, obtain the information of current location by current location checkout gear 14.In addition, based on base station area information with detect the path, obtain about the information of the service area 81 that comprises current location with about the information of the service area 82 that comprises the position that mobile object will move to.
When user's in-position 86, position, by the tuner 24 in two tuners 23 and 24, from broadcasting wave, obtain receivable channel and in these channels, be included in the information of the id number and the EPG of the broadcast base station in the broadcasting wave by radio wave tower 88 emission.Then, tuner 24 is based on the information of the id number and/or the EPG of broadcast base station, be tuned to broadcasting and the current channel of watching the base station of program same program.Then, tuner 23 and 24 detects respectively from the electric field strength of the broadcasting wave of radio wave tower 87 with from the electric field strength of the broadcasting wave of radio wave tower 88, and more detected electric field strength.
Along with the user (for example is advanced further, see the point " A " among Fig. 9), when from the electric field ratio of the radio wave of radio wave tower 87 from the electric field strength of the decay of the radio wave of radio wave tower 88 when strong, tuner 23 be tuned to tuner 24 the tuning identical channel of channel, thereby on display 16 and loud speaker 17 output and the current identical program of program of watching.
Above-mentioned according to an embodiment of the invention guider has following beneficial effect.
(1) in an embodiment of the present invention, by using the channel of the receivable digitalized ground broadcasting of scanning in the service area that enters subsequently in two tuners.Then, can be based on data about digitalized ground broadcasting, from the received broadcast base station in the service area that enters subsequently, determine identical with the current broadcast base station of watching or branch's broadcast base station.Like this, even the channel of the base station of being broadcasted in the service area that enters has subsequently changed, increased, or abolished, also can determine in the service area that enters subsequently, to provide the channel of the watching property of same program clearly.Thereby,, still can watch identical program even service area has changed owing to moving.
(2) in specific embodiments of the invention, by using a scanning in two tuners at the channel of the receivable digitalized ground of the service area interscan that enters subsequently broadcasting.Then, can be based on data about digitalized ground broadcasting, from the received broadcast base station the service area that enters subsequently, determine and broadcast and the current channel of watching the program same program.Like this, even the channel of the base station of being broadcasted in the service area that enters has subsequently changed, increased, or abolished, perhaps even set up new broadcast base station, also can determine in the service area that enters subsequently, to provide the channel of the watching property of same program clearly.Thereby,, still can watch identical program even service area has changed owing to moving.
(3) in specific embodiments of the invention, the service area that enters subsequently of selected mobile object, the direction of advance of consideration mobile object.Like this, although there are a plurality of adjacent service areas, still can select suitable service area.
(4) in specific embodiments of the invention, the action that the user should take subsequently is displayed on the screen, is impossible even the change of service area causes watching identical program.Therefore, exist the user to miss the situation of next action that take scarcely.
(5) in specific embodiments of the invention, the service area of watching property of same program is provided and can not provides the service area of watching property to be presented on the screen, be impossible even the change of service area causes watching identical program.Like this, the user can understand the situation that same program can not be watched, thereby the user can take next suitable operation under the situation that can not watch same program.
(6) in specific embodiments of the invention, be used to select the button of the broadcast base station that can watch to be presented at screen, even the change of service area causes watching identical program.Like this, can select immediately to watch broadcast base station, thereby the user can watch digitalized ground broadcasting continuously, and can not cause the problem of the reception of interrupting broadcasting and do not show anything.
(7) in specific embodiments of the invention, shown the button that is used to select again path detection, even the change of service area causes watching identical program.
Therefore, the user can move to the service area of the watching property that same program can be provided immediately, thereby can watch identical program.
(8) in specific embodiments of the invention, shown the button that is used to postpone up to watching same program, even the change of service area causes watching identical program.Thereby even there is not other programs of interest except same program, the user is by only selecting this button, and next action just can not hesitate.
In above-mentioned specific embodiment, the judgement whether user enters the overlapping region of two service areas is based on that broadcast area information and current location information make, yet, also can make based on the electric field strength of the radio wave that comes the radio wave tower in the comfortable service area separately.For example, under the situation that the user moves along the path 85 among Fig. 8, electric field strength as shown in Figure 9.Mobile object from service area 81 move to service area 82 the time, from the variation of the electric field strength of the radio wave tower 87 in the service area 81 by 91 expressions of electric field strength curve, from the variation of the electric field strength of the radio wave tower 88 of service area 82 by 92 expressions of electric field strength curve.
Along with the user 85 is moved further along the path, diminishes from the electric field strength 91 of the broadcasting wave of radio wave tower 87, and become big from the electric field strength of the broadcasting wave of radio wave tower 88.Simultaneously, the service area electric field strength that is defined as comprising broadcasting wave is equal to or higher than the zone of a set-point 93 (restriction that can watch for example, is equal to or higher than 60dB μ V/m).Therefore, if two electric field strength curves 91 and 92 all are equal to or higher than set-point 93, then the user can know that he or she is in the overlapping service area 83 of two partly overlapping service areas 81 and 82.Although the electric field strength that must often be dedicated to detect broadcasting wave in two tuners in this case, but adopt the actual measurement of electric field strength to be used for judging that the structure that enters overlapping service area is favourable for the user, because compare with the situation of using the broadcast base station area information, the user can detect more accurately and enter wherein.
In the above-described embodiments, make about the broadcast base station id number whether judgement identical with the current base station of watching or the branch base station is based on broadcast base station, if done the judgement negating, then the EPG based on broadcast base station judges another base station whether the broadcasting same program is arranged.What can select is can omit the judgement by above-mentioned broadcast base station id number, and whether another base station of the identical program of broadcasting is only arranged by the EPG judgement of broadcast base station.Because checking that the title of broadcast base station among the EPG and the airtime in one day are compared with the id number of checking broadcast base station needs more time, normally be used to detect method faster based on the detection of base station IDs number so for the broadcast base station of watching of same program.Yet, omitted a treatment step owing to omit the selectable structure that detects by id number, so this structure may have advantage under the detection by the id number of broadcast base station can not provide situation to the broadcast base station of watching of same program.Further, another situation is arranged, promptly branch's broadcast base station is not broadcasted the identical program of program of broadcasting with the current broadcast base station of watching.In this case, can make the judgement of or branch base station whether identical based on the id number of broadcast base station with the current base station of watching about broadcast base station, if result of determination is sure, then can whether identical programming be arranged based on the further affirmation of the EPG of broadcast base station.
Though the broadcast base station area information obtains such as reading map datum among the DVD-ROM in the guider in the above-mentioned specific embodiment 1 by from storage device media, the present invention is not limited thereto.For example, the present invention can similarly be applied in the communication and navigation device, and this communication and navigation device uses radio communication, such as portable phone, and can download map datum from the information dispatching centre.
Though guider is illustrated as the receiver that is used for mobile object in above-mentioned specific embodiment, the present invention is not limited to guider.For example, the present invention can be applied to a kind of portable phone, and this phone has the function of digitalized ground radio receiver, this receiver by GPS or with the communicating by letter of base station, the detection of current location is provided, and perhaps the present invention can be applied to a kind of TV receiver of the GPS of having function.
Though in above-mentioned specific embodiment, based on the id number that is included in about the broadcast base station in the data of digitalized ground broadcasting, whether made broadcast base station is identical or the judgement of branch base station, but should judge also and can judge based on information about organization channel, for example based on the organization channel title that is contained in the service describing list (SDT) in the program organizational information of digitalized ground broadcast transmitted, broadcasting bailee title etc. is judged.Further, though made the whether identical judgement of program based on EPG information, but this judgement also can be based on making with program-associated information, such as based on the program title that is also included within the event information list (EIT) in the programme labeling information, airtime in one day, information such as description of notion and making.
Watch program though in above-mentioned specific embodiment, use a tuner 23, and use another tuner 24 to detect the channel that is used to watch same program, but when mobile object is not arranged in overlapping service area, can receive identical channel with 24 with two tuners 23, thereby can synthesize received signal and output to decoding unit 28, thereby can watch program.
By such configuration, compare with the situation of only using a tuner 23 to receive, improved the square wave of received signal, thereby aspect the point defect in reducing image improvement has been arranged.In addition, program also can be watched by using tuner 24, and does not need to change by tuner 23 just at tuning channel.
Though in above-mentioned specific embodiment, although service area changes, but watching under the situation of same program, the channel that tuner 23 sets only is set on the channel of the watching property that same program is provided, but can increase an other operation here, promptly, change the setting that broadcast base station is selected by using input equipment 18 to select.For example, setting can be adjusted so that such state to be provided: when in service area A, using input equipment 18 to select a channel, and a tuning channel that is set to the broadcast base station A that can watch among the service area A of tuner 23; When mobile object moved to service area B, when using input equipment to select a channel, tuner 23 was set to the channel of the broadcast base station B that can watch in service area B.Like this, when user's requirement changes to another program from the current program of watching, if changed the setting of input equipment 18, can receive another broadcast base station immediately, thereby aspect providing convenience for the user improvement arranged.
The broadcast base station area information can be by increasing and cover receiving channels and the broadcast base station data are updated in the broadcast base station area information, these receiving channelss obtain by the receiving channels of scanning tuner 24 on all wave bands of digitalized ground broadcasting, and the broadcast base station data are determined by the id number of broadcast base station.More to make it possible to keep broadcast base station information be new for nearest to the feasibility of new data.Make description below with reference to Figure 10.Figure 10 (a) upgrades broadcast base station area information before.In the service area that is comprised in this information, the broadcast base station that can watch is to have receivable channel 16,18,20 and 22 AAA, BBB, CCC and DDD respectively.Then, know that by tuner 24 channel that can receive is 16,19 in this service area, 20,22 and 24, then determine that based on the id number that is included in the broadcast base station in the digitalized ground broadcasting broadcast base station of each receiving channels is broadcast base station AAA, BBB, CCC, DDD and EEE.Then, as the black background representative among Figure 10 (b), in the broadcast base station area information, the channel of broadcast base station BBB is changed to channel 19, and has increased new broadcast base station EEE and channel 24, thereby has upgraded the broadcast base station area information.
Though described the exemplary embodiments of Japanese digitalized ground broadcasting in above-mentioned specific embodiment, purpose of the present invention is not limited to this.The present invention also can be applied in other countries actual that use or plan actual use in the digitalized ground broadcasting of other type.In these situations, digitalized ground broadcasting can be consistent with this national law and system.
Above-mentioned specific embodiment is a little examples, can make various modifications under the prerequisite that does not depart from spirit and scope of the invention.

Claims (14)

1. a receiver that is used for mobile object, it receives digitalized ground broadcasting, comprising:
The current location detecting unit, it detects the current location of mobile object;
First tuned cell;
Second tuned cell;
The channel determining unit, it is by using first tuned cell, obtain the data of the digitalized ground broadcasting of the channel that in second service area, can watch, and based on the data of being obtained determine to be provided at can watch in second service area and with channel with the identical program of the current program of watching of second tuned cell, this second service area is adjacent with first service area of the current location that comprises described detection; And,
The channel switch unit, it switches to the channel of the channel of watching with second tuned cell from the current program of watching by the definite channel of described channel determining unit when detecting predetermined condition.
2. mobile receiver as claimed in claim 1 further comprises:
Overlapping service area enters detecting unit, and its current location that detects mobile object enters by the formed overlapping service area of the lap of first service area and second service area; Wherein,
When entering current location that detecting unit detects mobile object by overlapping service area when entering described overlapping service area, described channel determining unit is obtained the data relevant with the DTB Digital Terrestrial Broadcasting of the channel that can watch by using first tuned cell in second service area.
3. mobile receiver as claimed in claim 1 is characterized in that,
Described channel determining unit is determined described channel based on the electronic program guides that is included in the digitalized ground broadcasting.
4. mobile receiver as claimed in claim 1 is characterized in that:
Described channel determining unit is based on the data relevant with digitalized ground broadcasting, the channel of the broadcast base station that the broadcast base station that definite and current usefulness second tuned cell are watched is identical.
5. mobile receiver as claimed in claim 1 is characterized in that:
Described channel determining unit is based on the data relevant with digitalized ground broadcasting, determines and the channel of branch's broadcast base station of the broadcast base station that current usefulness second tuned cell is watched.
6. as claim 4 or 5 described mobile receivers, it is characterized in that,
Described channel determining unit is determined described channel based on the id number that is included in the broadcast base station in the digitalized ground broadcasting.
7. mobile receiver as claimed in claim 1 further comprises:
The first electric field detecting unit, its detect by described first tuned cell the electric field strength of broadcasting wave of tuning digitalized ground broadcasting; And
The second electric field detecting unit, its detect by described second tuned cell the electric field strength of broadcasting wave of tuning digitalized ground broadcasting; Wherein
Described predetermined condition comprises a condition, in this condition, by the electric field strength of the channel of the detected current program of watching of the described second electric field strength detecting unit less than by the detected electric field strength of the described first electric field detecting unit by the determined channel of described channel determining unit.
8. mobile receiver as claimed in claim 2 further comprises:
The map datum acquiring unit, it obtains the map datum of the information of the service area that comprises digitalized ground broadcasting; Wherein,
Described overlapping service area enters detecting unit, based on the information of the service area that is included in the digitalized ground broadcasting in the described map datum with by the current location of the detected mobile object of described current location detecting unit, the current location that detects mobile object enters by the formed described overlapping service area of the lap of described first service area and described second service area.
9. mobile receiver as claimed in claim 1 further comprises:
The map datum acquiring unit, it obtains the map datum of the information of the service area that comprises digitalized ground broadcasting; Wherein,
Described map datum comprises about the broadcast base station that can watch at each service area with about the information of the channel of these broadcast base stations; And,
Updating block further is provided, it uses first tuned cell to obtain with the digitalized ground of the channel that can watch in second service area and broadcasts relevant data, determine the broadcast base station that in second service area, can watch based on the data that obtained, and update package be contained in the described map datum about the broadcast base station that can watch at second service area with about the information of the channel of these base stations.
10. as any one described mobile receiver among claim 1-5 and the 7-9, further comprise:
The path detection unit, it detects the path of mobile object; With
Adjacent service area determining unit, it is based on determining described second service area adjacent with described first service area by detected path, described path detection unit.
11., further comprise as any one described mobile receiver among claim 1-5 and the 7-9:
Next operation selector button display unit, when can not be identified for by described channel determining unit in described second service area, can watching and with the described current channel of watching the identical program of program in, show the button that is used to select next operation.
12., further comprise as any one described mobile receiver among claim 1-5 and the 7-9:
Can watch the broadcast base station display unit, when can not be identified for by described channel determining unit in described second service area, can watching and with the described current channel of watching the identical program of program in, be presented at the broadcast base station that can watch in described second service area adjacent with described first service area that comprises described current location.
13. mobile receiver as claimed in claim 10 further comprises:
When can not be identified for by described channel determining unit in described second service area, can watching and with the described current channel of watching the identical program of program in, described path detection unit arrives the path detection of a service area, in this service area, have and the described current identical program of watching of program of watching.
14., further comprise as any one described mobile receiver among claim 1-5 and the 7-9:
Postpone the unit, when can not be identified for by described channel determining unit in described second service area, can watching and with the described current channel of watching the identical program of program in, stop the image of digitalized ground broadcasting and the output of sound, enter one up to described mobile object and can watch and the current service area of watching the identical program of program.
CNB2005100937547A 2004-08-30 2005-08-29 Receiving device for moving object Expired - Fee Related CN100448273C (en)

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