CN201355254Y

CN201355254Y - Navigation device capable of carrying out navigation and CMMB playing simultaneously

Info

Publication number: CN201355254Y
Application number: CNU2009203008724U
Authority: CN
Inventors: 秦春达; 李晓华
Original assignee: JIANGSU HUAKE GPS TECHNOLOGY Co Ltd
Current assignee: JIANGSU HUAKE GPS TECHNOLOGY Co Ltd
Priority date: 2009-02-25
Filing date: 2009-02-25
Publication date: 2009-12-02
Anticipated expiration: 2019-02-25

Abstract

The utility model relates to a navigation device capable of carrying out navigation and CMMB playing simultaneously. The navigation device comprises a CPU unit, a map database, a GPS unit, a touch screen, a CMMB unit, a map display memorizer used for caching navigation image data from the CPU unit, and an image split display driving circuit. The navigation device of the utility model can convert CMMB television image signals from the CMMB unit and navigation image signals from the CPU unit into composite signals and drive the touch screen to respectively display navigation images and CMMB television images simultaneously to realize the image split display, thereby performing the functions of navigation and CMMB playing simultaneously.

Description

Can navigate simultaneously and guider that CMMB plays

Technical field

The utility model relates to a kind of can the navigation simultaneously and guider that CMMB plays.

Background technology

CMMB is English China Mobile Multimedia Broadcasting (China Mobile multimedia broadcasting system)

Abbreviation.It is the system of first cover of domestic independent research towards mobile phone, PDA, MP3, MP4, digital camera, the multiple portable terminal of notebook computer, utilize the S-band satellite-signal to realize that " world " one covers, whole nation roaming, support 25 cover TV programme and 30 cover broadcast programs, on October 24th, 2006, SARFT(The State Administration of Radio and Television) has formally issued China Mobile multimedia broadcasting (being commonly called as mobile TV) industry standard, determines to adopt the Mobile Multimedia Broadcasting industry standard of China's independent research.

The CMMB industry standard has been stipulated in the broadcasting service frequency range, frame structure, chnnel coding and the modulation of mobile multimedia broadcast system broadcast channel transmission signals, this standard is applicable to that 30MHz is to the interior broadcasting service frequency of 3000MHz frequency range, via satellite and/or the broadcast system of multi-media signals such as terrestrial wireless emission TV, broadcasting, data message, can realize whole nation roaming, transmission technology adopts the STiMi technology.

Chinese patent publication number CN101312535 discloses the terminal device of a kind of CMMB system, and it comprises: CPU, CMMB signal receiver, video stack storer, audio frequency stacked memory, Video Decoder, audio decoder, LCD, power amplifier and loudspeaker; CPU is looking, is adding synchronized timestamp respectively in the audio data stream by the CMMB receiver, then it is sent into respectively look, the audio frequency stacked memory; Look, the audio frequency stacked memory by the mode of first in first out with describedly look, audio data stream is sent into respectively and is looked, audio decoder, simultaneously by CPU control respectively according to described synchronized timestamp look, audio decoder carries out synchronous decoding, exports the video and the audio frequency of synchronised at last respectively by LCD and power amplifier and loudspeaker.

The weak point of the terminal device of above-mentioned CMMB system is: the function that can not realize navigating instrument.

Existing guider often only can provide some simple multi-media player functions except path navigation, for example play some MP3 that prestores or video files, and when path navigation, and play multimedia video file simultaneously is so its function is more single.

The utility model content

Technical problem to be solved in the utility model provides a kind of can the navigation simultaneously and guider that CMMB plays.

For solving the problems of the technologies described above, of the present utility model can the navigation simultaneously and guider that CMMB plays comprises: CPU element, the map data base that links to each other with CPU element, the GPS unit that links to each other with CPU element, touch-screen, the CMMB unit, be used for the map display-memory of buffer memory from the navigation picture data of CPU element, and will be composite signal and drive touch-screen from the CMMB television image signal of CMMB unit with from the navigation picture conversion of signals of CPU element by the zones of different image split screen display driver circuit of show navigator image and CMMB television image simultaneously respectively; The data input pin of the navigation picture data output end ground connection figure display-memory of CPU element, the data output end map interlinking of this map display-memory is as first signal input part of split screen display driver circuit, the view data output terminal map interlinking of CMMB unit is as the secondary signal input end of split screen display driver circuit, and the composite video signal output terminal of image split screen display driver circuit connects the video signal input terminal of touch-screen.

Described CMMB unit links to each other with the CPU element that is used to control its duty, so that the user opens or close the CMMB unit by the touch-screen input control signal.

Described CPU element comprises dual core processor, to guarantee the travelling speed of navigating instrument.

Described CMMB unit comprises: the CMMB signal receiver that links to each other with described CPU element, the video stack storer that links to each other with audio data stream output end with the video data stream output terminal of CMMB signal receiver respectively and audio frequency stacked memory, the Video Decoder and the audio decoder that link to each other with the output terminal of video stack storer and audio frequency stacked memory respectively; This CMMB unit also comprises audio frequency compositor and power amplifier and loudspeaker; First sound source input end of audio frequency compositor links to each other with the output terminal of audio decoder, second sound source input end of audio frequency compositor with the navigation speech output terminal of CPU element link to each other, the audio output of audio frequency compositor links to each other with power amplifier and loudspeaker; CPU element links to each other with the control input end of Video Decoder and audio decoder; The output terminal of Video Decoder is the view data output terminal of described CMMB unit.

The utility model has positive effect with respect to prior art: (1) guider of the present utility model can will be composite signal and drive touch-screen by zones of different show navigator image and CMMB television image simultaneously respectively from the CMMB television image signal of CMMB unit with from the navigation picture conversion of signals of CPU element, realize that promptly the image split screen shows, thus the function that realization can be navigated simultaneously and CMMB plays.(2) in the guider of the present utility model, image split screen display driver circuit will be that the synthetic composite signal of layering is to drive touch-screen by zones of different from the CMMB television image signal of CMMB unit with from the navigation picture conversion of signals of CPU element, different figure layers are while show navigator image and CMMB television image respectively, so that navigation picture and the CMMB television image that shows on the touch-screen independently refreshed respectively in real time, thereby alleviated the working load of CPU element and image split screen display driver circuit, guarantee the quick operation of guider, guaranteed the picture display quality.(3) consider that guider often is arranged on driver's right front,, be beneficial to the driver and clearly see navigation picture so described navigation picture and CMMB television image are shown by the right side area and the left field of touch-screen respectively.

Description of drawings

Fig. 1 is the circuit structure block diagram of guider among the embodiment 1;

Fig. 2 is the flow chart that the two pictures of the startup of guider among the embodiment 2 show;

Fig. 3 is the flow chart of two picture display processing systems of guider among the embodiment 2;

Fig. 4 is the flow chart of two picture acoustic processing mechanism of guider among the embodiment 2.

Embodiment

(embodiment 1)

See Fig. 1, the guider of present embodiment comprises: CPU element 1, the map data base 2 that links to each other with CPU element 1, the GPS unit 3 that links to each other with CPU element 1, touch-screen 6, CMMB unit, be used for buffer memory from the map display-memory 11 of the navigation picture data of CPU element 1 and will be composite signal and drive touch-screen 6 by the zones of different image split screen display driver circuit 12 of show navigator image and CMMB television image simultaneously respectively from the CMMB television image signal of CMMB unit with from the navigation picture conversion of signals of CPU element 1; The data input pin of the navigation picture data output end ground connection figure display-memory 11 of CPU element 1, the data output end map interlinking of this map display-memory 11 is as first signal input part of split screen display driver circuit 12, the view data output terminal map interlinking of CMMB unit is as the secondary signal input end of split screen display driver circuit 12, and the composite video signal output terminal of image split screen display driver circuit 12 connects the video signal input terminal of touch-screen 6.

Described CMMB unit links to each other with the CPU element 1 that is used to control its duty.

Described CPU element 1 comprises dual core processor.

Described CMMB unit comprises: the CMMB signal receiver 8 that links to each other with described CPU element 1, the video stack storer 9 that links to each other with audio data stream output end with the video data stream output terminal of CMMB signal receiver 8 respectively and audio frequency stacked memory 10, the Video Decoder 4 and the audio decoder 5 that link to each other with the output terminal of video stack storer 9 and audio frequency stacked memory 10 respectively; This CMMB unit also comprises audio frequency compositor 13 and power amplifier and loudspeaker 7; First sound source input end of audio frequency compositor 13 links to each other with the output terminal of audio decoder 5, second sound source input end of audio frequency compositor 13 with the navigation speech output terminal of CPU element 1 link to each other, the audio output of audio frequency compositor 13 links to each other with power amplifier and loudspeaker 7; CPU element 1 links to each other with the control input end of Video Decoder 4 with audio decoder 5; The output terminal of Video Decoder 4 is the view data output terminal of described CMMB unit.

(embodiment 2)

See Fig. 2-4, embodiment 1 can navigate simultaneously and the basis of the guider that CMMB plays on, the method for work of the guider of present embodiment comprises the steps:

A, guider are when carrying out real-time navigation by default path of navigation, described CPU element 1 calculates current location and current gait of march according to the gps signal that GPS unit 3 receives, and reads from described map data base 2 and the corresponding map datum of current location simultaneously; Calculate the particular location of current location on described default path of navigation then, and carry out buffer memory by CPU element 1 output navigation picture data to map display-memory 11;

B, CMMB unit receive the CMMB TV signal and carry out decoding processing, export CMMB television image signal and television audio signals then; Image split screen display driver circuit 12 receives from the CMMB television image signal of CMMB unit with from the navigation picture data of map display-memory 11, it is synthetic then described CMMB television image signal and navigation picture data to be carried out layering, to generate composite signal and to deliver to touch-screen 6, this composite signal makes touch-screen 6 scheme layer difference show navigator image and CMMB television image simultaneously by zones of different, difference;

The television audio signals of C, CMMB unit output and the navigation speech cue of CPU element 1 are delivered to audio frequency compositor 13 respectively and are carried out branch sound channel phonetic synthesis and generate synthesized voice signal, and this synthesized voice signal is delivered to power amplifier with audio frequency compositor 13 and loudspeaker 7 are play.

Wherein, simultaneously respectively when the television audio signals of output and navigation speech cue, audio frequency compositor 13 is at half the volume decrease of the television audio sound channel in the synthesized voice signal in CMMB unit and CPU element 1, delivers to power amplifier then and loudspeaker 7 are play.

Particularly, described navigation picture and CMMB television image are shown by the right side area and the left field of touch-screen 6 respectively, and navigation picture and CMMB television image show on last figure layer and figure below layer respectively, the left field at touch-screen 6 that is navigation picture is the transparent print layer, so that show the CMMB television image.

The adjustable ratio of the viewing area of the shared whole touch screen 6 in navigation picture viewing area and CMMB television image viewing area.When the CMMB unit is closed, the full screen display on touch-screen 6 of described navigation picture; When stopping navigation feature, the full screen display on touch-screen 6 of CMMB television image.

The navigation picture and the CMMB television image that show on the touch-screen 6 independently refresh respectively in real time.

Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.

Claims

1, a kind of can the navigation simultaneously and guider that CMMB plays is characterized in that comprising: CPU element (1), the map data base (2) that links to each other with CPU element (1), the GPS unit (3) that links to each other with CPU element (1), touch-screen (6), the CMMB unit, be used for the map display-memory (11) of buffer memory from the navigation picture data of CPU element (1), and will be composite signal and drive touch-screen (6) from the CMMB television image signal of CMMB unit with from the navigation picture conversion of signals of CPU element (1) by the zones of different image split screen display driver circuit (12) of show navigator image and CMMB television image simultaneously respectively;

The data input pin of the navigation picture data output end ground connection figure display-memory (11) of CPU element (1), the data output end map interlinking of this map display-memory (11) is as first signal input part of split screen display driver circuit (12), the view data output terminal map interlinking of CMMB unit is as the secondary signal input end of split screen display driver circuit (12), and the composite video signal output terminal of image split screen display driver circuit (12) connects the video signal input terminal of touch-screen (6).

2, according to claim 1 can the navigation simultaneously and guider that CMMB plays, it is characterized in that: described CMMB unit links to each other with the CPU element that is used to control its duty (1).

3, according to claim 1 and 2 can the navigation simultaneously and guider that CMMB plays, it is characterized in that: described CPU element (1) comprises dual core processor.

4, according to claim 1 can the navigation simultaneously and guider that CMMB plays, it is characterized in that: described CMMB unit comprises: the CMMB signal receiver (8) that links to each other with described CPU element (1), respectively with the video data stream output terminal of CMMB signal receiver (8) output is held the video stack storer (9) that links to each other and audio frequency stacked memory (10), linked to each other with the output terminal of video stack storer (9) and audio frequency stacked memory (10) respectively with audio data stream Video Decoder (4) and audio decoder (5); This CMMB unit also comprises audio frequency compositor (13) and power amplifier and loudspeaker (7); First sound source input end of audio frequency compositor (13) links to each other with the output terminal of audio decoder (5), second sound source input end of audio frequency compositor (13) with the navigation speech output terminal of CPU element (1) link to each other, the audio output of audio frequency compositor (13) links to each other with power amplifier and loudspeaker (7); CPU element (1) links to each other with the control input end of Video Decoder (4) with audio decoder (5); The output terminal of Video Decoder (4) is the view data output terminal of described CMMB unit.