CN201142723Y - DVD device with digital television function - Google Patents
DVD device with digital television function Download PDFInfo
- Publication number
- CN201142723Y CN201142723Y CNU2008200917326U CN200820091732U CN201142723Y CN 201142723 Y CN201142723 Y CN 201142723Y CN U2008200917326 U CNU2008200917326 U CN U2008200917326U CN 200820091732 U CN200820091732 U CN 200820091732U CN 201142723 Y CN201142723 Y CN 201142723Y
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- dvd
- digital television
- mpeg
- dvd device
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The utility model provides a DVD device with digital TV function. The DVD device comprises a DVD core, a MPEG-2 decoding circuit and a display interface circuit, which form DVD function; a radio frequency signal receiving circuit, a tuning and demodulating circuit and a demultiplexing circuit, which form a wireless digital TV; a system control circuit and an operation control circuit, wherein the system control circuit consists of hardware composed of a micro-processor system, and system software solidified with the hardware, and is two-way connected with the DVD core, the radio frequency signal receiving circuit, the tuning and demodulating circuit, the demultiplexing circuit, the MPEG-2 decoding circuit, the display interface circuit and the operation control circuit respectively; the MPEG-2 decoding circuit is also two-way connected with the DVD core, the demultiplexing circuit and the display interface circuit. Without excessively increasing the cost, the DVD device can not only read and broadcast video and audio signals in optical disks but also receive and broadcast digital TV signals.
Description
Technical field
The utility model relates to a kind of DVD device, relates in particular to a kind of DVD device with digital television function.
Background technology
Mobile digital TV is the extension of traditional tv medium, and TV programme is through digital coding, and the method for utilizing wireless transmission, ground to receive is carried out TV program transmitting.It and traditional simulated television radio transmission are essentially different, maximum advantage is supported exactly to move and is received, lay by the single frequency network that transmits, making digital signal cover reaches more than 90%, in this scope through wireless receiving, all can watch high-quality television image, even also do not influence reception during up to 150km/h when Vehicle Speed.Move (ground) though Digital Television is started late,, meet the trend of social informatization development, in the development of Digital Television, play the part of more and more important role gradually because of it integrates fixing, portable, mobile receiving function.In recent years, the exploitation of China's mobile TV project has obtained bigger progress.Occurred vehicle-mounted mobile digital TV at present, comprised that automobile, train, subway etc. will be the peculiar manors of vehicle-mounted mobile digital TV.Along with the progress of science and technology will become emerging multimedia consumer products with development reception of Mobile Digital TV chance as mobile phone, PDA.
Make the invention more ingenious at last of DVD device in the medium in 20 end of the centurys.Although the coming years, Chinese DVD market increases held stationary, is lying prostrate the dramatic change of product structure and competition situation in market sign dive stably.Along with the increase of consumer income and the variation of demand, have multi-purpose DVD product the coming years demand will significantly rise.Under the current nonprofit substantially situation of common DVD, this have a pin cardiotonic that multi-purpose DVD is undoubtedly Chinese DVD manufacturer.
The utility model content
The technical problems to be solved in the utility model is to design a kind of device that has DVD playing function and digital television function concurrently.
In order to solve the problems of the technologies described above, the utility model provides a kind of DVD device with digital television function, comprising:
DVD player core, MPEG-2 decoding circuit and the display interface circuit of forming the DVD function;
Radiofrequency signal receiving circuit, tuning demodulator circuit, the demultiplexing circuit of forming wireless digital TV-set;
The system, control circuit and the operation control circuit that are used for described DVD of orchestration and wireless digital TV-set co-ordination;
Described system, control circuit is formed hardware components by microprocessor system, and solidifies the systems soft ware composition in this hardware components;
Described system, control circuit is respectively with described DVD player core, radiofrequency signal receiving circuit, tuning demodulator circuit, demultiplexing circuit, MPEG-2 decoding circuit, display interface circuit with operation control circuit is two-way is connected;
Described MPEG-2 decoding circuit is also respectively with DVD player core, demultiplexing circuit with display interface circuit is two-way is connected.
Pass through technique scheme, DVD device of the present utility model has only increased the receiving function unit of a digital television signal, do not need additionally to increase a complete digital television broadcasting system, just can realize can not only be by reading and play audio-video signal in the laser disc, and can receive and the function of playing digital television signal.The digital television signal that the radiofrequency signal receiving circuit is received is through tuning demodulation, demultiplexing processing, MPEG-2 decoding processing, through display interface circuit output.Simultaneously, the DVD device of this digital television function can be integrated in the less machine, realizes portable preferably.
As more particular embodiment of the utility model, described MPEG-2 decoding circuit comprises, is used for the AC-3 decoding circuit of audio signal.
Described display interface circuit comprises: the drive circuit of voice output, figure accelerating circuit and video display driver circuit.
As one of technique scheme execution mode more specifically, described systems soft ware comprises: be arranged in order, be used to provide with the physical layer interface hardware abstraction layer of hardware device, be used to provide various processes or functions such as equipment or memory management inner nuclear layer, be used to each application program that the intermediate layer of service routine is provided, and the application layer that is used to provide various application programs.
Described inner nuclear layer adopts Windows Mobile operating system.
Described intermediate layer comprises driving and built-in function;
Described driving and built-in function comprise: hardware interface driving, the management of TS transmit flow data, program control, authorization message management, data, services and application protocol software and man-machine interface.
Application program that described application layer provides comprises: be used for the application program that electronic programming browses and the application program of video playback.
Compared with prior art, advantage of the present utility model is, too much increases under the prerequisite of cost not needing, and combines the function of DVD and wireless digital TV-set, satisfied consumer's needs well.Product of the present utility model also has portability preferably simultaneously, can be fit to move application and wait multiple use.
Description of drawings
Fig. 1 is the hardware configuration schematic diagram of the DVD device of digital television function of the present utility model;
Fig. 2 is the structural representation of systems soft ware of the present utility model.
Embodiment
Below in conjunction with optimum embodiment shown in the drawings the utility model is described further.
As shown in Figure 1, the hardware components that the utlity model has the DVD device of digital television function comprises two parts, i.e. DVD funtion part and Digital Television receiving function part.
Wherein, the Digital Television receiving function partly is that wireless digital antenna, radiofrequency signal receiving circuit 21, tuning demodulator circuit 22 and TS stream demultiplexing circuit 23 are formed.The radio-frequency (RF) digital TV signal that the wireless digital antenna is accepted is handled through tuning demodulation, demultiplexing, transfers to MPEG-2 decoding circuit 12 again and carries out the MPEG-2 decoding processing, through display interface circuit 11 output audio-video signals.
The DVD funtion part is made up of DVD player core 15, MPEG-2 decoding circuit 12 and display interface circuit 11.DVD player core 15 reads DVD optical disc digital signal; 12 pairs of digital signals that read of MPEG-2 decoding circuit are carried out decoding processing, comprising the AC-3 decoding circuit that audio signal is handled; Display interface circuit 11 mainly comprises the drive circuit of voice output, figure accelerating circuit and video display driver circuit.
The DVD device of digital television function also comprises system's control processing circuit 13, and these circuit 13 major functions are to guarantee that each operational module work of DVD and Digital Television is orderly, and complete machine can operate as normal.
Simultaneously, the user passes through operation control circuit 14 to system's control processing circuit 13 inputting user commands.
As shown in Figure 2, the DVD device of digital television function of the present utility model comprises, forms hardware components by microprocessor system, and solidifies the systems soft ware in this hardware components.
Design of System Software adopts hierarchy, is made up of hardware abstraction layer, inner nuclear layer, intermediate layer and application layer.
Wherein, hardware abstraction layer mainly provides the physical layer interface with hardware device, and it has all shielded all ardware features, can be compatible mutually with the hardware that increases newly thereby high layer software needn't be revised.
Inner nuclear layer is mainly operating system layer, and it provides various process/equipment/functions such as memory management, and what can select is Windows Mobile operating system.
The intermediate layer provides common, commonly used service routine for each application program, mainly is made up of driving and built-in function.Major function has application protocol, video navigation control, interface driving, user/service management and network communication control etc.As various hardware interfaces drivings, the management of TS transmit flow data, program control, authorization message management, data, services and application protocol software and man-machine interface etc., this layer can call the hardware driving layer, realize data management and application protocol.
Application layer provides various dissimilar application programs, as electronic programming browse, video playback etc.
Claims (7)
1, a kind of DVD device with digital television function comprises:
DVD player core (15), MPEG-2 decoding circuit (12) and the display interface circuit (11) of forming the DVD function;
Radiofrequency signal receiving circuit (21), tuning demodulator circuit (22), the demultiplexing circuit (23) of forming wireless digital TV-set; It is characterized in that also comprising:
The system, control circuit (13) and the operation control circuit (14) that are used for described DVD of orchestration and wireless digital TV-set co-ordination;
Described system, control circuit (13) is formed hardware components by microprocessor system, and solidifies the systems soft ware composition in this hardware components;
Described system, control circuit (13) respectively with described DVD player core (15), radiofrequency signal receiving circuit (21), tuning demodulator circuit (22), demultiplexing circuit (23), MPEG-2 decoding circuit (12), display interface circuit (11) and two-way connection of operation control circuit (14);
Described MPEG-2 decoding circuit (12) also respectively with DVD player core (15), demultiplexing circuit (23) and two-way connection of display interface circuit (11).
2, the DVD device with digital television function according to claim 1 is characterized in that, described MPEG-2 decoding circuit (12) comprises, is used for the AC-3 decoding circuit of audio signal.
3, the DVD device with digital television function according to claim 1 is characterized in that, described display interface circuit (11) comprising: the drive circuit of voice output, figure accelerating circuit and video display driver circuit.
4, the DVD device with digital television function according to claim 1, it is characterized in that, described systems soft ware comprises: arrange from bottom to top, be used to provide with the physical layer interface hardware abstraction layer of hardware device, be used to provide various processes or functions such as equipment or memory management inner nuclear layer, be used to each application program that the intermediate layer of service routine is provided, and the application layer that is used to provide various application programs.
5, the DVD device with digital television function according to claim 4 is characterized in that, described inner nuclear layer adopts Windows Mobile operating system.
6, the DVD device with digital television function according to claim 4 is characterized in that, described intermediate layer comprises driving and built-in function;
Described driving and built-in function comprise: hardware interface driving, the management of TS transmit flow data, program control, authorization message management, data, services and application protocol software and man-machine interface.
7, the DVD device with digital television function according to claim 4 is characterized in that application program that described application layer provides comprises: be used for the application program that electronic programming browses and the application program of video playback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200917326U CN201142723Y (en) | 2008-01-14 | 2008-01-14 | DVD device with digital television function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200917326U CN201142723Y (en) | 2008-01-14 | 2008-01-14 | DVD device with digital television function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201142723Y true CN201142723Y (en) | 2008-10-29 |
Family
ID=40070431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200917326U Expired - Fee Related CN201142723Y (en) | 2008-01-14 | 2008-01-14 | DVD device with digital television function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201142723Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187870A (en) * | 2015-09-11 | 2015-12-23 | 长春轨道客车股份有限公司 | High speed motor-car set vehicle television function debugging method |
-
2008
- 2008-01-14 CN CNU2008200917326U patent/CN201142723Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187870A (en) * | 2015-09-11 | 2015-12-23 | 长春轨道客车股份有限公司 | High speed motor-car set vehicle television function debugging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20160114 |