CN100576888C - A kind of general signal processing platform that is applied to little demonstration back projection TV - Google Patents
A kind of general signal processing platform that is applied to little demonstration back projection TV Download PDFInfo
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- CN100576888C CN100576888C CN200410077473A CN200410077473A CN100576888C CN 100576888 C CN100576888 C CN 100576888C CN 200410077473 A CN200410077473 A CN 200410077473A CN 200410077473 A CN200410077473 A CN 200410077473A CN 100576888 C CN100576888 C CN 100576888C
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Abstract
A kind of general signal processing platform that is applied to little demonstration back projection TV, it comprises analog part and Digital Signal Processing part, described analog signal partly comprises picture height, intermediate frequency process, and the switch of picture video, Audio Processing and each road AV input signal is selected; Described Digital Signal Processing partly comprises digital decoding, removes interleaved units, expanding element; Also comprise at least one main tuner, receive external radio-frequency signal; One AV diverter switch connects described main tuner and Ge Lu video input signals; And the sound power amplifier of an at least one digital decoding unit and a correspondence, described digital decoding unit connects described AV diverter switch, and is electrically connected with described expanding element by described removal interleaved units.Product of the present invention has reduced the usage quantity of IC chip owing to the described digital decoding of core component unit, described removal interleaved units, described expanding element have adopted corresponding chip respectively, has improved cost performance of product.
Description
Technical field
The present invention relates to a kind of circuit arrangement of television set, especially relate to a kind of circuit that is applied to the general signal processing platform of little demonstration back projection TV and improve.
Background technology
Present little demonstration back projection TV more and more is subjected to consumer's welcome, and its intrinsic advantage has determined the developing direction of back projection TV.But its signal processing system is the place of the key of complete machine, and the general signal processing platform that existing little demonstration back projection TV is adopted has adopted a large amount of IC chips more, so that realize more various and gorgeous function, but has also brought the too high of cost thus.The price of present little demonstration back projection TV is obviously higher, has exceeded the scope that general family can bear.
Therefore, also there is defective in prior art, awaits improving and development.
Summary of the invention
The object of the present invention is to provide a kind of general signal processing platform that is applied to little demonstration back projection TV, reduce the usage quantity of IC chip, can be widely used in little demonstration back projection TV, realize double high-frequency head picture-in-picture, picture out picture, beautiful sound function, has AV input, output, component input, RGB input, interfaces such as DVI input realize that really TV, display are two-in-one.
Technical scheme of the present invention is as follows:
A kind of general signal processing platform that is applied to little demonstration back projection TV, it comprises two parts: an analog part and a Digital Signal Processing part, described analog signal partly comprises picture height, intermediate frequency process, and the switch of picture video, Audio Processing and each road AV input signal is selected; Described Digital Signal Processing partly comprises digital decoding, removal interleaved units (Deinterlace), expanding element (Scaler), component input, RGB input, DVI input, shows and export; Wherein also comprise at least one main tuner, receive external radio-frequency signal; One AV diverter switch connects described main tuner and Ge Lu video input signals; And the sound power amplifier of an at least one digital decoding unit and a correspondence, described digital decoding unit connects described AV diverter switch, and is electrically connected with described expanding element by described removal interleaved units; Described expanding element also connects control a memory cell, and is connected ray machine driving display part with the LVDS interface chip by the DVI interface chip; Wherein,
The analog to digital converter of chip used built-in 6 8Bits in described digital decoding unit, the 4H self-adapting comb filtering, the full system type pictorial colour decoder, and adjustable to colourity, brightness, contrast and color saturation, ITU-R 601, ITU-R 656 forms are supported in output;
Described removal interleaved units is chip used to be had Motion Adaptive and removes interleaving mode, and interleaving function is removed at intelligent edge, can carry out color digital/luminance transient and improve and handle;
The built-in chip type Turbo X86CPU that described expanding element adopts, have UART concurrently, Timer, I2CBus, GPIO, IR Receiver and many kinds of resources of ROM/RAM Interface, its ability of catching image can be from VGA to WUXGA, supports 4: 3 patterns of video PAL/NTSC and HDTV/SDTV16 simultaneously: 9 patterns, full framely carry out linearity or nonlinear extensions is handled, its multiple expansion combined engagement software processes realizes PIP/POP, have image noise reduction, programmable CSC conversion, Gammma proofreaies and correct, black level is adjusted, and white peak is adjusted image processing techniques.
Described processing platform, wherein, described digital decoding unit adopts the VPC3230 chip, and described removal interleaved units adopts the PW1231 chip, and described expanding element adopts the PW181 chip.
Described processing platform, wherein, described processing platform also is provided with a sub-figure decoding unit and a sub-sound power amplifier, and communication is connected between described AV diverter switch and the described expanding element.
Described processing platform, wherein, the tuner of described boss's passage all adopts the AMP82600 chip, directly exports VIDEO, AUDIO signal, or exports second accompanying sound intermediate frequency signal and use for outside special-purpose beautiful sound decoding chip.
Described processing platform, wherein, described AV diverter switch is selected the TA8851CN chip for use, allows multi-channel A V input, the output of boss's passage freely to switch in input signal.
A kind of general signal processing platform that is applied to little demonstration back projection TV provided by the present invention, because the described digital decoding of core component unit, described removal interleaved units, described expanding element have adopted corresponding chip respectively, reduce the usage quantity of IC chip, improved cost performance of product.
Description of drawings
Fig. 1 is the circuit function block diagram that is applied to the general signal processing platform of little demonstration back projection TV of the present invention.
Embodiment
Below in conjunction with accompanying drawing, will be described in detail the specific embodiment of the present invention.
The described general signal processing platform that is applied to little demonstration back projection TV of the present invention, as shown in Figure 1, its signal processing circuit is mainly divided two parts: one is the analog part, and two is the Digital Signal Processing part.The analog signal part mainly comprises boss's picture height, intermediate frequency process, and the switch of master, sprite video, Audio Processing and each road AV input signal is selected.Digital Signal Processing comprises that partly digital decoding, removal interleaved units (Deinterlace), expanding element (Scaler), component input, RGB input, the DVI of boss's passage import, show parts such as output.Certainly, described technical scheme of the present invention might not be provided with boss's passage and picture simultaneously, also a passage and picture, no picture-in-picture function can only be set.
Now that the specific implementation method division of this part is as follows:
In the described general signal processing platform of the present invention, the tuner of described master, subchannel all adopts the AMP82600 chip, and directly output video, audio signal also can be exported the special-purpose beautiful sound decoding chip use of second accompanying sound intermediate frequency signal for the outside.
Described AV diverter switch is selected the TA8851CN chip for use, can allow multi-channel A V input, the output of boss's passage freely to switch in input signal.
Described digital decoding part of the present invention is finished the analog to digital converter ADC of 6 8Bits of this built-in chip type, 4H self-adapting comb filtering, full system type pictorial colour decoder by the VPC3230 chip.It is to colourity, brightness, and contrast and color saturation are adjustable, and ITU-R 601, ITU-R 656 forms are supported in output, and this chip connects convenient with the back-end processing circuit, be convenient a kind of digital decoding scheme of use.
Described removal interleaved units Deinterlace selects for use the PW1231 chip as processing scheme IC, and this chip has Motion Adaptive Deinterlace, and intelligent edge Deinterlace function can be carried out color digital/luminance transient and be improved (DCTI/DLTI) processing.
Described expanding element Scale scheme is selected the PW181 chip for use, and its built-in Turbo X86CPU has concurrently such as UART, Timer, and I2C Bus, GPIO, multiple resources such as IR Receiver and ROM/RAM Interface use flexible.This IC catches the ability of image can be from VGA to WUXGA, supports 4: 3 patterns of video PAL/NTSC and 16: 9 patterns of HDTV/SDTV simultaneously, full framely carries out linearity or non-linear Scale handles.Multiple Scale combined engagement software processes flexibly can realize the PIP/POP that enriches, advanced image noise reduction technology, programmable CSC conversion, Gammma proofreaies and correct, black level is adjusted, image processing techniquess such as white peak adjustment make image displaying quality good, and its patterned OSD can make user interface friendly more.
Be described in detail concrete signal processing below:
Described image (Video) treatment circuit: the vision signal that the tuner of described boss's passage demodulates vision signal and Ge Lu input is input to switching in the AV diverter switch TA8851CN, the signal and one tunnel of output boss passage monitors output signal, wherein, the signal of key frame is sent to the VPC3230D chip of main channel, carry out the A/D conversion within it, numeral comb filtering, colour decoding, and then signal is delivered to the PW1231 chip do the Deinterlace processing, 2: 2 or 3: 2 film modes are handled, and then deliver to the V mouth of PW181 chip.And the signal of sprite is sent to a VPC3230D chip of subchannel equally, carries out the A/D conversion within it, digital comb filtering, colour decoding, and the G mouth of delivering to the PW181 chip then carries out Deinterlace to be handled.Give the MST9883B chip after the component signal of input and rgb signal switch by the PI5V330 chip and do the A/D conversion, give the G mouth of described PW181 chip then.The DVI signal of input converts the G mouth that 48 digital rgb signal is delivered to PW181 to by interface chip SiI1161B.Last PW181 does the SCALER extension process to the signal of each road input, deliver to SiI164 again and change into the TMDS signal and give ray machine by the DVI interface or give DS90C385 and convert the LVDS signal to and deliver to ray machine, be shown on the display screen after by the drive circuit of ray machine this signal being handled.
Described sound (Audio) treatment circuit: described main tuner is exported second accompanying sound intermediate frequency signal, this signal is delivered to the MSP3410G chip and is carried out digital decoding, and the audio signal of audio signal that solves and Ge Lu AV input selects the voice signal and a tunnel of output boss passage to monitor output signal through the TA8851CN switch.Main channel sound is delivered to the audio signal switching and the WOW audio of MSP3410G and main tuner and is handled; If at the TV state, the sound of main channel is then directly exported by MSP3410G, and without TA8851CN, delivers to TDA8946J at last and carry out power amplification.Described sprite audio signal is delivered to TDA7052B and is carried out processing and amplifying after the TA8851CN switch is selected, exported by the earphone terminal at last.
The general signal processing platform that the present invention utilizes less I C to constitute can be widely used in little demonstration back projection TV, double high-frequency head picture-in-picture, picture out picture, beautiful sound function have been realized, has AV input, output, the component input, the RGB input, interfaces such as DVI input have been realized that really TV, display are two-in-one, and have been improved cost performance.
Should be understood that above-mentioned description at preferred embodiment of the present invention is too concrete, can not therefore be interpreted as the restriction to scope of patent protection of the present invention, scope of patent protection should be as the criterion with claims.
Claims (5)
1, a kind of general signal processing platform that is applied to little demonstration back projection TV, it comprises two parts: an analog part and a Digital Signal Processing part, described analog partly comprises picture height, intermediate frequency process, and the switch of picture video, Audio Processing and each road AV input signal is selected; Described Digital Signal Processing partly comprises removes interleaved units, expanding element, component input, RGB input, DVI input, demonstration output; Wherein also comprise at least one main tuner, receive external radio-frequency signal; One AV diverter switch connects described main tuner and Ge Lu video input signals; And the sound power amplifier of an at least one digital decoding unit and a correspondence, described digital decoding unit connects described AV diverter switch, and is electrically connected with described expanding element by described removal interleaved units; Described expanding element also connects control a memory cell, and is connected ray machine driving display part with Low Voltage Differential Signal coffret chip by the DVI interface chip; It is characterized in that,
The analog to digital converter of chip used built-in 68 bits in described digital decoding unit, the 4H self-adapting comb filtering, the full system type pictorial colour decoder, and adjustable to colourity, brightness, contrast and color saturation, ITU-R 601, ITU-R 656 forms are supported in output;
Described removal interleaved units is chip used to be had Motion Adaptive and removes interleaving mode, and interleaving function is removed at intelligent edge, can carry out color digital/luminance transient and improve and handle;
The built-in chip type Turbo X86CPU that described expanding element adopts, have UART Universal Asynchronous Receiver Transmitter concurrently, timer, the I2C bus, bus extender, infrared remote receiver and the multiple resource of ROM/RAM interface, its ability of catching image can be supported video PAL/NTSC 4:3 pattern and HDTV/SDTV 16:9 pattern simultaneously from VGA to WUXGA, full frame linearity or the nonlinear extensions of carrying out handled, in its multiple expansion combined engagement software processes realization picture/the outer function of picture, have to image noise reduction programmable colour space transformation, gamma correction, black level is adjusted, and white peak is adjusted image processing techniques.
2, processing platform according to claim 1 is characterized in that, described digital decoding unit adopts the VPC3230 chip, and described removal interleaved units adopts the PW1231 chip, and described expanding element adopts the PW181 chip.
3, processing platform according to claim 1 is characterized in that, described processing platform also is provided with a sub-figure decoding unit and a sub-sound power amplifier, and communication is connected between described AV diverter switch and the described expanding element.
4, processing platform according to claim 1 is characterized in that, described main tuner and Ge Lu video all adopt the AMP82600 chip, direct output audio, vision signal, or export second accompanying sound intermediate frequency signal and use for outside special-purpose beautiful sound decoding chip.
5, processing platform according to claim 1 is characterized in that, described AV diverter switch is selected the TA8851CN chip for use, allows multi-channel A V input, main tuner and the output of Ge Lu video freely to switch in input signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200410077473A CN100576888C (en) | 2004-12-10 | 2004-12-10 | A kind of general signal processing platform that is applied to little demonstration back projection TV |
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| CN200410077473A CN100576888C (en) | 2004-12-10 | 2004-12-10 | A kind of general signal processing platform that is applied to little demonstration back projection TV |
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| CN1735158A CN1735158A (en) | 2006-02-15 |
| CN100576888C true CN100576888C (en) | 2009-12-30 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101557478B (en) * | 2008-04-07 | 2012-04-18 | 联咏科技股份有限公司 | Video receiving device |
| CN101783112B (en) * | 2010-03-19 | 2012-03-14 | 四川长虹电器股份有限公司 | LVDS (Low Voltage Differential Signaling) signal acquisition device |
| CN112103616B (en) | 2017-08-01 | 2023-08-01 | 宏达国际电子股份有限公司 | Antenna structure capable of transmitting Wigig frequency band and method for folding and extending antenna structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193873A (en) * | 1997-03-07 | 1998-09-23 | 三星电子株式会社 | Analog/digital cable TV capable of performing bidirectional communication |
| CN1220545A (en) * | 1998-11-25 | 1999-06-23 | 海信集团公司 | Television/indicator integral circuit control method |
| CN2377779Y (en) * | 1999-06-23 | 2000-05-10 | 厦门华侨电子企业有限公司 | TV set with digital video broadcasting receiving function |
| CN2494091Y (en) * | 2001-09-03 | 2002-05-29 | 海信集团有限公司 | Liquid crystal back projection television set with VGA indication function |
| KR20040006687A (en) * | 2002-07-13 | 2004-01-24 | 엘지전자 주식회사 | Picture In Picture Based On 1-Scaler Of Video Display Device |
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2004
- 2004-12-10 CN CN200410077473A patent/CN100576888C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193873A (en) * | 1997-03-07 | 1998-09-23 | 三星电子株式会社 | Analog/digital cable TV capable of performing bidirectional communication |
| CN1220545A (en) * | 1998-11-25 | 1999-06-23 | 海信集团公司 | Television/indicator integral circuit control method |
| CN2377779Y (en) * | 1999-06-23 | 2000-05-10 | 厦门华侨电子企业有限公司 | TV set with digital video broadcasting receiving function |
| CN2494091Y (en) * | 2001-09-03 | 2002-05-29 | 海信集团有限公司 | Liquid crystal back projection television set with VGA indication function |
| KR20040006687A (en) * | 2002-07-13 | 2004-01-24 | 엘지전자 주식회사 | Picture In Picture Based On 1-Scaler Of Video Display Device |
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