CN102385850A - Signal transformation circuit and digital signal display device - Google Patents
Signal transformation circuit and digital signal display device Download PDFInfo
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- CN102385850A CN102385850A CN201010268163XA CN201010268163A CN102385850A CN 102385850 A CN102385850 A CN 102385850A CN 201010268163X A CN201010268163X A CN 201010268163XA CN 201010268163 A CN201010268163 A CN 201010268163A CN 102385850 A CN102385850 A CN 102385850A
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Abstract
The invention is applicable to the field of digital signal transformation and provides a signal transformation circuit and a digital signal display device. The circuit comprises a digital LVDS (Low Voltage Differential Signaling) video signal decoding chip, a bus termination and a digital DVI (Digital Video Interactive) video signal encoding chip, wherein the digital LVDS video signal decoding chip is used for transforming LVDS video signals into RGB 24 bit universal video bus signals; the bus termination joint is connected with the digital LVDS video signal decoding chip and is used for enhancing the anti-interference capacity of the digital RGB 24 bit universal video bus signals; and the digital DVI video signal encoding chip is connected with the bus termination joint and used for encoding the digital RGB 24 bit universal video bus signals with enhanced anti-interference capacity into digital DVI video signals. In the invention, the LVDS video signals are transformed into the digital DVI video signals and then are transmitted to a display terminal, so that the anti-interference capacity of the output signals is enhanced, and data loss during the transforming process of the digital signals to analog signals can be avoided.
Description
Technical field
The invention belongs to the conversion of signals field, relate in particular to a kind of signaling conversion circuit and digital signal display device.
Background technology
Manifest dual display function in fields such as Industry Control and financial ATM cash dispensers; Usually computer processor is a RGB24bit generic video bus signals with information processing; Convert this signal format into simulation VGA (Video Graphics Array; The video image array) after the vision signal, to outside display terminal output.But be based on the character of simulation VGA vision signal, under the environment of Industry Control and public place, this signal is subject to disturb, and causes picture weave easily, consequence such as ripple occurs, even when digital signal transfers simulating signal to, causes loss of data.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of signaling conversion circuit, is intended to solve the problem that vision signal that present stage exists is subject to disturb, data possibly lost.
The embodiment of the invention is achieved in that a kind of signaling conversion circuit, and said circuit comprises:
Numeral LVDS vision signal decoding chip is used for converting digital LVDS vision signal into digital rgb 24bit generic video bus signals;
The bus termination is connected with said digital LVDS vision signal decoding chip, is used to strengthen the antijamming capability of said digital rgb 24bit generic video bus signals;
Numeral DVI video signal coding chip connects with said bus end in succession, is used for the said digital rgb 24bit generic video bus signals behind the enhancing antijamming capability is encoded to digital DVI vision signal.
Another purpose of the embodiment of the invention is to provide a kind of digital signal display device, comprises signaling conversion circuit, and said signaling conversion circuit comprises:
Numeral LVDS vision signal decoding chip is used for converting digital LVDS vision signal into digital rgb 24bit generic video bus signals;
The bus termination is connected with said digital LVDS vision signal decoding chip, is used to strengthen the antijamming capability of said digital rgb 24bit generic video bus signals;
Numeral DVI video signal coding chip connects with said bus end in succession, is used for the said digital rgb 24bit generic video bus signals behind the enhancing antijamming capability is encoded to digital DVI vision signal.
The embodiment of the invention converts digital LVDS vision signal into digital DVI (Digital VisualInterface; Digital visual interface) carries to display terminal after the vision signal; Strengthen the antijamming capability of output signal, avoided the loss of data of digital signal in the analog signal conversion process.
Description of drawings
Fig. 1 is the circuit structure diagram of the signaling conversion circuit that provides of the embodiment of the invention;
Fig. 2 is the structural drawing of the digital LVDS vision signal decoding chip that provides of the embodiment of the invention;
Fig. 3 is the structural drawing of the digital DVI video signal coding chip that provides of the embodiment of the invention;
Fig. 4 is the circuit structure diagram of another signaling conversion circuit of providing of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention is carried to display terminal after converting digital LVDS vision signal into digital DVI vision signal, has strengthened the antijamming capability of output signal, has avoided the loss of data of digital signal in the analog signal conversion process.
The embodiment of the invention provides a kind of signaling conversion circuit, and said circuit comprises:
Numeral LVDS vision signal decoding chip is used for converting digital LVDS vision signal into digital rgb 24bit generic video bus signals;
The bus termination is connected with said digital LVDS vision signal decoding chip, is used to strengthen the antijamming capability of said digital rgb 24bit generic video bus signals;
Numeral DVI video signal coding chip connects with said bus end in succession, is used for the said digital rgb 24bit generic video bus signals behind the enhancing antijamming capability is encoded to digital DVI vision signal.
The embodiment of the invention also provides a kind of digital signal display device, comprises signaling conversion circuit, and said signaling conversion circuit comprises:
Numeral LVDS vision signal decoding chip is used for converting digital LVDS vision signal into digital rgb 24bit generic video bus signals;
The bus termination is connected with said digital LVDS vision signal decoding chip, is used to strengthen the antijamming capability of said digital rgb 24bit generic video bus signals;
Numeral DVI video signal coding chip connects with said bus end in succession, is used for the said digital rgb 24bit generic video bus signals behind the enhancing antijamming capability is encoded to digital DVI vision signal.
Embodiment one:
Fig. 1 shows the circuit structure of the signaling conversion circuit that the embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
Numeral LVDS vision signal decoding chip 11 is used for converting digital LVDS vision signal into digital rgb 24bit generic video bus signals.
Numeral DVI video signal coding chip 13 is connected with bus termination 12, is used for the digital rgb 24bit generic video bus signals behind the enhancing antijamming capability is encoded to digital DVI vision signal.
In embodiments of the present invention, the structure of digital LVDS vision signal decoding chip 11 is as shown in Figure 2, and wherein, " LVDS [0:3] " is the input port of LVDS data 0 to data 3; " LVDS CLK " is the LVDS clock; " D [0-23] " is the output ports of data 0 to data 23; " Vcc " is WV; " GND " is earth terminal; " DE " is data enable signal; VSYNC is a data V synchronizing signal; HSYNC is a data H homogenous frequency signal; CLK OUT is the clock signal of data; VCC is a WV.This chip can be that the chip of DS90CF386 or THC63LVDF84B is realized with the model.
The structure of numeral DVI video signal coding chip 13 is as shown in Figure 3, and wherein, DVDD is a WV; DVI [0..2] is the output terminals of DVI data 0 to DVI data 2; DVI_CLK is the DVI clock signal.This chip can be that the chip of SII164 is realized with the model.
In real work, after digital LVDS vision signal decoding chip 11 is decoded the LVDS vision signal, generate digital rgb 24bit generic video bus signals, and the digital rgb 24bit generic video bus signals that is generated is sent to bus termination 12.12 pairs of digital RGB24bit generic video bus signals of bus termination are handled, with antijamming capability that increases signal and the integrality that guarantees signal.At last; Digital rgb 24bit generic video bus signals after bus termination 12 will be handled is delivered to digital DVI video signal coding chip 13; After digital rgb 24bit generic video bus signals recompile after numeral DVI video signal coding chip 13 will be handled is digital DVI vision signal, export to display terminal through signal output part.
In embodiments of the present invention, digital LVDS vision signal converted into after the digital DVI vision signal carry, strengthened the antijamming capability of output signal, avoided the loss of data of digital signal in the analog signal conversion process to display terminal.
Embodiment two:
As one embodiment of the present of invention; Add an ESD (Electro-Static discharge in the circuit in the above-described embodiments; Static discharges) holding circuit 14, as branch road, be connected respectively with digital DVI video signal coding chip 13 and DVI VT mouth in the foregoing description; As shown in Figure 4, be used for digital DVI vision signal is carried out overvoltage protection.
Embodiment three:
The signaling conversion circuit that provides in the embodiment of the invention can be used for the bank ATM cash dispenser, also can be used for digital signal display devices such as Industry Control display device.
The embodiment of the invention is carried to display terminal after converting digital LVDS vision signal into digital DVI vision signal, has strengthened the antijamming capability of output signal, has avoided the loss of data of digital signal in the analog signal conversion process.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a signaling conversion circuit is characterized in that, said circuit comprises:
Numeral LVDS vision signal decoding chip is used for converting digital LVDS vision signal into digital rgb 24bit generic video bus signals;
The bus termination is connected with said digital LVDS vision signal decoding chip, is used to strengthen the antijamming capability of said digital rgb 24bit generic video bus signals;
Numeral DVI video signal coding chip connects with said bus end in succession, is used for the said digital rgb 24bit generic video bus signals behind the enhancing antijamming capability is encoded to digital DVI vision signal.
2. signaling conversion circuit as claimed in claim 1 is characterized in that, said circuit also comprises:
Esd protection circuit as branch road, is connected respectively with said digital DVI video signal coding chip and digital DVI VT mouth, is used for said digital DVI vision signal is carried out overvoltage protection.
3. a digital signal display device comprises signaling conversion circuit, it is characterized in that, said signaling conversion circuit comprises:
Numeral LVDS vision signal decoding chip is used for converting digital LVDS vision signal into digital rgb 24bit generic video bus signals;
The bus termination is connected with said digital LVDS vision signal decoding chip, is used to strengthen the antijamming capability of said digital rgb 24bit generic video bus signals;
Numeral DVI video signal coding chip connects with said bus end in succession, is used for the said digital rgb 24bit generic video bus signals behind the enhancing antijamming capability is encoded to digital DVI vision signal.
4. signal apparatus as claimed in claim 3 is characterized in that, said circuit also comprises:
Esd protection circuit as branch road, is connected respectively with said digital DVI video signal coding chip and digital DVI VT mouth, is used for said digital DVI vision signal is carried out overvoltage protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010268163XA CN102385850A (en) | 2010-08-31 | 2010-08-31 | Signal transformation circuit and digital signal display device |
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| CN201010268163XA CN102385850A (en) | 2010-08-31 | 2010-08-31 | Signal transformation circuit and digital signal display device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475840A (en) * | 2013-09-25 | 2013-12-25 | 武汉精立电子技术有限公司 | Method for switching four-LINK LVDS video signals into MIPI video signals |
| CN103475842A (en) * | 2013-09-25 | 2013-12-25 | 武汉精立电子技术有限公司 | Method for converting LVDS video signals into MIPI video signals |
| CN103475843A (en) * | 2013-09-25 | 2013-12-25 | 武汉精立电子技术有限公司 | Method for converting double-LINK LVDS video signals into MIPI video signals |
| CN103491336A (en) * | 2013-09-25 | 2014-01-01 | 武汉精立电子技术有限公司 | Method for converting single-LINK LVDS video signal into MIPI video signal |
| CN104202552A (en) * | 2014-08-21 | 2014-12-10 | 武汉精测电子技术股份有限公司 | Method and device for achieving dual-mode mobile industry processor interface (MIPI) signals through bridge chip |
| CN104836975A (en) * | 2015-05-26 | 2015-08-12 | 武汉精测电子技术股份有限公司 | Method and device capable of enhancing signal output capacity of video converter board |
| CN103581600B (en) * | 2013-09-25 | 2017-01-04 | 武汉精立电子技术有限公司 | LVDS video signal is converted to 8LANE odd even split screen MIPI video signal method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475840A (en) * | 2013-09-25 | 2013-12-25 | 武汉精立电子技术有限公司 | Method for switching four-LINK LVDS video signals into MIPI video signals |
| CN103475842A (en) * | 2013-09-25 | 2013-12-25 | 武汉精立电子技术有限公司 | Method for converting LVDS video signals into MIPI video signals |
| CN103475843A (en) * | 2013-09-25 | 2013-12-25 | 武汉精立电子技术有限公司 | Method for converting double-LINK LVDS video signals into MIPI video signals |
| CN103491336A (en) * | 2013-09-25 | 2014-01-01 | 武汉精立电子技术有限公司 | Method for converting single-LINK LVDS video signal into MIPI video signal |
| CN103491336B (en) * | 2013-09-25 | 2016-08-24 | 武汉精立电子技术有限公司 | The LVDS video signal of single LINK is converted to MIPI video signal method |
| CN103581600B (en) * | 2013-09-25 | 2017-01-04 | 武汉精立电子技术有限公司 | LVDS video signal is converted to 8LANE odd even split screen MIPI video signal method |
| CN103475840B (en) * | 2013-09-25 | 2017-01-25 | 武汉精立电子技术有限公司 | Method for switching four-link LVDS video signals into MIPI video signals |
| CN104202552A (en) * | 2014-08-21 | 2014-12-10 | 武汉精测电子技术股份有限公司 | Method and device for achieving dual-mode mobile industry processor interface (MIPI) signals through bridge chip |
| CN104202552B (en) * | 2014-08-21 | 2017-09-05 | 武汉精测电子技术股份有限公司 | The method and apparatus that both of which MIPI signals are realized by bridging chip |
| CN104836975A (en) * | 2015-05-26 | 2015-08-12 | 武汉精测电子技术股份有限公司 | Method and device capable of enhancing signal output capacity of video converter board |
| CN104836975B (en) * | 2015-05-26 | 2019-01-01 | 武汉精测电子集团股份有限公司 | The method and apparatus of video rotating plate output signal ability can be enhanced |
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Application publication date: 20120321 |