CN201230350Y - Digital and analog integrated television set - Google Patents
Digital and analog integrated television set Download PDFInfo
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- CN201230350Y CN201230350Y CNU2008200940591U CN200820094059U CN201230350Y CN 201230350 Y CN201230350 Y CN 201230350Y CN U2008200940591 U CNU2008200940591 U CN U2008200940591U CN 200820094059 U CN200820094059 U CN 200820094059U CN 201230350 Y CN201230350 Y CN 201230350Y
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- analog integrated
- integrated television
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- 238000005516 engineering process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000004927 fusion Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
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Abstract
The utility model relates to a digital-analog integrated television, comprising an audio frequency and video processor. A high frequency tuner which can work in digital signal mode and analog signal mode is connected with the audio frequency and video processor. The digital-analog integrated television can play analog television and China terrestrial digital television, confirming with the need of domestic market. By using single-carrier wave and multicarrier wave fusion demodulation chips, the digital-analog integrated television has extraordinary good receiving effect to single-carrier wave and multicarrier wave. The digital-analog integrated television adopts few chips, has high integration level, reduces cost, is convenient for reducing production failure rate, and greatly lightens after sale burden.
Description
Technical field
The utility model relates to television set, more particularly, relates to a kind of digital-analog integrated television set.
Background technology
China Digital TV ground broadcast transfer system standard GB20600-2006 " digital television ground broadcast transmission system frame structure, chnnel coding and modulation " (calling Chinese terrestrial DTV standard in the following text) is approved for mandatory national standard on August 18th, 2006, and in enforcement on August 1 in 2007.The 2008 Beijing Olympic Games also will be adopted GB20600-2006 standard live television programming, and domestic Digital Television market will develop rapidly.The television set that can play at present Chinese terrestrial DTV standard signal on the market is few, and these products generally need finish various processing by the polylith chip, and integrated level is not high, causes cost higher, the average price costliness.At present the television set of supporting Chinese terrestrial DTV standard is usually by tuner, modulus conversion chip, demodulation chip, Video Decoder, audio process, central processing unit, compositions such as audio-frequency power amplifier and relational storage.After digital television signal is entered by tuner, be processed into digital medium-frequency signal output, become digital signal through modulus conversion chip again through tuner.Digital signal deinterleaves or the like through the demodulation chip demodulation, and output TS stream (MPEG-2 transmits stream) is to decoder.TS flows through behind the decoder decode, is decoded, is exported to display screen after the processing such as convergent-divergent by central processing unit at last.Simultaneously, the decoder output audio signal is delivered to loudspeaker after amplifying.Therefore need to adopt more chip and peripheral circuit, integrated level is low, the cost height, and can only be better to a kind of reception in single carrier or the multicarrier on the function, receive then relatively poor to another kind.
The utility model content
The technical problems to be solved in the utility model is, at the above-mentioned defective of prior art, provides a kind of digital-analog integrated television set.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of digital-analog integrated television set, comprise audio video processor, be connected with the tuner that can work in digital signal pattern and analog signal pattern with audio video processor.
In digital-analog integrated television set described in the utility model, comprise also respectively and merge demodulation chip that it is used for digital demodulation signal is become the TS transmission code stream of serial or parallel form with single multicarrier that audio video processor is connected with tuner.
In digital-analog integrated television set described in the utility model, audio video processor merges demodulation chip with tuner and single multicarrier respectively by the I2C bus and is connected.
In digital-analog integrated television set described in the utility model, audio video processor is stars at dawn MSD189 audio frequency and video process chip.
In digital-analog integrated television set described in the utility model, it is the LGS-8G42 or the LGS-8G52 chip of Co., Ltd of Ling Xun Technology that single multicarrier merges demodulation chip.
Implement digital-analog integrated television set of the present utility model, has following beneficial effect: can play simulated television, GB terrestrial digital TV, the demand that meets the domestic market merges demodulation chip by using single multicarrier, and is all very good to the reception of single and multi-carrier.And the utility model adopts chip few, and the integrated level height has reduced cost, is convenient to produce and reduces failure rate, alleviates burden after sale greatly.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the theory diagram of digital-analog integrated television set one embodiment of the utility model.
Embodiment
As shown in Figure 1, in an embodiment of digital-analog integrated television set of the present utility model, a kind of digital-analog integrated television set comprises audio video processor, is connected with the tuner that can work in digital signal pattern and analog signal pattern with audio video processor.In force, comprise also respectively and merge demodulation chip that it is used for digital demodulation signal is become the TS transmission code stream of serial or parallel form with single multicarrier that audio video processor is connected with tuner.Audio video processor merges demodulation chip with tuner and single multicarrier respectively by the I2C bus and is connected.
In force, audio video processor is stars at dawn MSD189 audio frequency and video process chip.It is the audio video processor of a high integration, and Morningstar Corporation is one of present TV chip mainstream vendor, has the bigger market share and technical strength.Two 8051 MCU of this built-in chip type, can receive string, parallel TS flows, have the audio/video decoding, MPEG-4 video decode, AC-3 digital audio decoding, PAL/NTSC/SECAM video decode, multi-system television Sound Processor Unit, ADC, 3D-DEINTERLACE, SCALER, two 8-bit LVDS interfaces of TS stream demultiplexing, MPEG-2 etc., built-in HDMI, powerful.
In force, single multicarrier fusion demodulation chip is LGS-8G42 of Ling Xun Technology or LGS-8G52 chip.LGS-8G42 or LGS-8G52 chip are that the single multicarrier of a GB of Ling Xun Technology merges demodulation chip.Ling Xun Technology is for participating in one of Chinese terrestrial DTV standard units.This chip can be demodulated to the MPEG-2 TS code stream of serial or parallel form with digital intermediate frequency IF signal.
As shown in Figure 1, audio frequency and video process chip MSD189, single multicarrier fusion demodulation chip LGS-8G42 or LGS-8G52, tuner are by the I2C bus communication.MSD189 can control the work of LGS-8G42 or LGS-8G52, tuner by I2C.
In the time will playing analog signal, MSD189 switches to tuner by I2C the corresponding modes output 38MHz intermediate-freuqncy signal of analog signal, handle through the built-in intermediate level circuit of tuner again, export composite video signal CVBS at last, export MSD189 to, process is decoded in MSD189, (de-interlace), convergent-divergent processing such as (scaler) back export the display screen demonstration to the LVDS signal line by line.Tuner output SIF (second sound intermediate frequency) is to MSD189 simultaneously, and output audio signal after MSD189 handles exports loudspeaker to and sounds after power amplifier amplifies.
In the time will playing digital signal, MSD189 goes tuner is switched to the corresponding modes of digital signal by I2C.Digital radio signal is through behind the digital analog integrated tuner, output intermediate-freuqncy signal (DIF) is delivered to LGS-8G42 or LGS-8G52, analog to digital converter by LGS-8G42 or LGS-8G52 inside is converted to digital intermediate frequency signal, through system synchronization, the signal demodulation, inverse fourier transform, IDFT, error correction decoding, after deinterleavings etc. are handled, the TS of output serial or parallel form stream, the TS that delivers to MSD189 again flows the input port, through demultiplexing, MPEG-2 decoding, the vision signal that solves is exported LVDS signal to display screen and is shown behind Scale.The MPEG-2 decoding solves audio signal simultaneously, exports power amplifier to and sound through loudspeaker then after digital-to-analogue conversion.
The utility model describes by several specific embodiments, it will be appreciated by those skilled in the art that, under the situation that does not break away from the utility model scope, can also carry out various conversion and be equal to alternative the utility model.In addition, at particular condition or concrete condition, can make various modifications to the utility model, and not break away from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the utility model claim scope.
Claims (5)
1, a kind of digital-analog integrated television set comprises audio video processor, it is characterized in that, is connected with the tuner that can work in digital signal pattern and analog signal pattern with audio video processor.
2, digital-analog integrated television set according to claim 1 is characterized in that, also comprises respectively merging demodulation chip with single multicarrier that audio video processor is connected with tuner, and it is used for digital demodulation signal is become the TS transmission code stream of serial or parallel form.
3, digital-analog integrated television set according to claim 2 is characterized in that, audio video processor merges demodulation chip with tuner and single multicarrier respectively by the I2C bus and is connected.
According to the arbitrary described digital-analog integrated television set of claim 1～3, it is characterized in that 4, audio video processor is stars at dawn MSD189 audio frequency and video process chip.
According to the arbitrary described digital-analog integrated television set of claim 1～3, it is characterized in that 5, it is LGS-8G42 of Ling Xun Technology or LGS-8G52 chip that single multicarrier merges demodulation chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200940591U CN201230350Y (en) | 2008-05-26 | 2008-05-26 | Digital and analog integrated television set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200940591U CN201230350Y (en) | 2008-05-26 | 2008-05-26 | Digital and analog integrated television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201230350Y true CN201230350Y (en) | 2009-04-29 |
Family
ID=40635288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200940591U Expired - Fee Related CN201230350Y (en) | 2008-05-26 | 2008-05-26 | Digital and analog integrated television set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201230350Y (en) |
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2008
- 2008-05-26 CN CNU2008200940591U patent/CN201230350Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20110526 |