CN1599417A - Method and device for converting multiple image signal - Google Patents
Method and device for converting multiple image signal Download PDFInfo
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Abstract
This invention discloses a method for transforming multiple image signals and its device which converts various types of image signals to digital signals of DVI so as to connect the signal transformation device with the DV devices by a unified system cable and adds some control wires and audio signal transmission wires and power supply wires providing working power to the signal transformation devices from the DVD on the cable therefore, the connection between DVD and signal transforming devices only needs a single system cable containing DVI data with a large space between them for putting the signal transformation device on a convenient position for users.
Description
Technical field
Involved in the present invention is can with polytype image signal transformation for can be in longer cable distance a kind of device of image transmitted signal, specifically, for existing polytype picture signal, as radio picture signal (RF), S terminal picture signal (S_VIDEO), color difference image signal (YPbPr), composite video signal (CVBS), and information equipment shows signal (VGA) etc., all can be transformed to a kind of picture signal by this device by long system cable Distance Transmission, and in this system cable, also have and the corresponding audio signal of picture signal, and and receive the control signal between the numerical display device of picture signal and supply with from the power supply of numerical display device.
Background technology
In recent years, along with the development of image display technology, the screen enlarging of display device, complanation, digitlization make the function of image display more and more perfect.From its picture signal kind that can insert, traditional radio picture signal (RF) is not only arranged, composite video (CVBS) signal, S terminal picture signal (S_VIDEO) and color difference image signal (YPbPr/YcbCr) also can be arranged, video image interface (VGA) signal that conventional information equipment display unit is not only arranged, also has digital visual interface (DVI) signal, high-definition multimedia digital interface (HDMI) signal or the like.For large-sized display device, multiple different types of holding wire is all inserted, line is various, be difficult to accomplish that line is in good order, and in the above-mentioned multiple signal, the incompatible long cable transmission of most of signals, some holding wire can not be above 2 meters, otherwise its picture signal attenuation increases, and is vulnerable to assorted letter interference, and the picture quality of demonstration is incurred loss.If the large-sized display devices wall hanging of complanation is got up, problem is just more serious, even all signal links all are connected with the complanation large-sized display devices of wall hanging by undercut, all signalling arrangements that link to each other all must place near the display device, like this, between user and signalling arrangement, certainly existing a space length, although can operate by corresponding remote controller to signalling arrangement, just not saying some operation must be carried out on machine, the operation of the remote controller of numerous exactly unlike signal equipment will make user's dizziness.
How to make the signal link of large-sized display devices more succinct, guarantee the optimum efficiency of picture quality, the simple operation of apparatus is exactly a purpose of the present invention.
Development along with Information Technology Equipment, a kind of DVI of being referred to as (Digital Visual Interface) digital display interface has appearred, it carries out the transmission of image information and synchronizing information in the mode of digital signal, and this digital signal is with differential signal transmission, therefore transmission cable length is less to the influence of signal, can realize the transfer of data of long-range distance.At receiving terminal the data that receive are decoded, and handle generation image information data signal, show accordingly by numerical display device again.
Summary of the invention
Numeric display unit with digital display interface (DVI) can directly receive, show the view data of sending here from digital display interface, and this is basis of the present invention.Picture signal with various types, comprise radio frequency (RF) TV signal, composite video signal (CVBS), S terminal (S_Video) picture signal, color difference signal (YPbPr/YcbCr) and 15 pin D plug signal signals such as (VGA/S VGA/XGA) carry out conversion, make it to become digital display interface (DVI) digital signal, so just can chromacoder be connected with numerical display device by a unified system cable, and cable and audio signal transmission wire cable are controlled in increase in the system cable that both connect, and increase can provide the power cable of working power from numerical display device to chromacoder, like this, numerical display device only needs the single system cable that includes digital display interface (DVI) data to get final product with being connected of chromacoder, and between numerical display device and chromacoder bigger relative space position can be arranged, chromacoder can be placed the user to operate comparatively easily on the position, and the signal of all signalling arrangements that need connect is inserted chromacoder respectively.In daily use, can be by direct control to chromacoder, or by the remote controller control signal of numerical display device reception from the user, through the control signal of system cable transmission to chromacoder, finish control to chromacoder, in conjunction with operation, just can realize image restoring and the acoustics of signal on numerical display device of various ways to signalling arrangement.
Fig. 1 has or not under the chromacoder situation involved in the present invention, sound/look equipment and the connection diagram that comprises the large-size screen monitors audio-visual apparatus of sound equipment and numerical display device.From Figure 1A as seen, because no signal converting means, all sounds/look equipment because the restriction of short connecting line, all can only place near the large-size screen monitors audio-visual apparatus nearby, like this, just there is the situation of more signal connecting line in the large-size screen monitors audio-visual apparatus, and the user to the audiovisual of large-size screen monitors audio-visual apparatus distance also promptly to numerous sounds/look operating distance of equipment; From Figure 1B as seen, all the sound/equipment of looking inserts chromacoder, be connected with the large-size screen monitors audio-visual apparatus through longer dedicated system cable by chromacoder again, like this, the signal connecting line of large-size screen monitors audio-visual apparatus is very succinct, and can with sound/look equipment and chromacoder place user position easily, the user is not subjected to the adverse effect of user to the audiovisual distance of large-size screen monitors audio-visual apparatus to the operation of these equipment.
Description of drawings
Fig. 1 is the present invention's sound/look equipment and large-size screen monitors audio-visual apparatus connection diagram under different situations;
Fig. 2 constitutes block diagram for the principle of chromacoder of the present invention.
Embodiment
Referring to Fig. 2.Figure 2 shows that the principle block diagram of one embodiment of the invention.
From Fig. 2 as seen, the chromacoder of the embodiment of the invention is made of following part:
Vision signal commutation circuit 4: its role is to the control of subject image signal main control microprocessor 11, respectively video demonstration (VGA) signal or aberration (Y/Pr/Pb or the Y/Cr/Cb) signal that insert are sent into A/D change-over circuit 9;
Vision signal commutation circuit 4 has video and shows (VGA) signal and aberration (Y/Pr/Pb and Y/Cr/Cb) signal input part, and its control input end links to each other with picture signal main control microprocessor 11, and its signal output part is connected to A/D change-over circuit 9;
A/D change-over circuit 9: its role is to the analog picture signal that vision signal commutation circuit 4 is sent here is converted to data image signal, and export picture signal main control microprocessor 11 to;
The signal input part of A/D change-over circuit 9 connects vision signal commutation circuit 4, and its output is connected to picture signal main control microprocessor 11;
RF tuner 2: its role is under the control of assist control microprocessor 12, radio frequency (RF) picture signal that inserts is carried out tuning, demodulation, and export the picture signal after the demodulation to 3D filter 1 and handle, and this picture signal is as the main picture image signal, and audio signal output to audio frequency/sound effect processing circuit 5 that demodulation is obtained carries out processing and amplifying;
3D filter 1: its role is to the composite picture signal of input is carried out separating of luminance signal and carrier chrominance signal, and export the picture signal that light tone is separated to digital decoder 6 and be further processed;
3D filter 1 has video signal input terminal, signal output part that can external vision facilities, and it is connected to the picture signal input of RF tuner 2 in addition, and its output is connected to digital decoder 6, and its control input end links to each other with picture signal main control microprocessor 11;
A RF tuner 3: its effect is similar with RF tuner 2, but its output is connected to digital decoder 8, and its picture signal can be used as auxilliary picture signal;
An audio frequency/sound effect processing circuit 5: its role is under the control of assist control microprocessor 12, the various audio signals that will import are respectively amplified and audio is handled, and export external-connected port and interface link 15 to;
Audio frequency/sound effect processing circuit 5 has external audio input end, can insert video (Video) signal, video demonstration (VGA) signal, S terminal signals, light tone (Y/C) signal and digital display interface (DVI) corresponding audio signal---audio frequency (V) signal, audio frequency (G) signal, audio frequency (S) signal, audio frequency (Y) signal and audio frequency (D) signal etc., also can insert graphics/audio signal from RF tuner 2, RF tuner 3, it has this machine output port, and audio frequency output also is connected to interface link 15;
Assist control microprocessor 12: its role is under the instruction of picture signal main control microprocessor 11, RF tuner 2, RF tuner 3 and audio frequency/sound effect processing circuit 5 are controlled, to reach the consistent of image frame and sound equipment;
A digital decoder 8: its role is under the control of picture signal main control microprocessor 11, the vision signal of RF tuner 3 outputs is carried out digital conversion, the data image signal that the output light tone is separated is to picture signal master control microprocessor 11;
Digital decoder 8 picture signal inputs are connected to RF tuner 3, and image signal output end and control input end are connected to picture signal main control microprocessor 11;
A digital decoder 6: its effect is similar with digital decoder 8, except that receiving radio-frequency chart from 3D filter 1 as the restituted signal, also can receive picture signal from the S terminal, because this road picture signal is set at main screen signal, the picture signal after its digital conversion exports interlacing/motion compensation processor 10 to and is further processed;
The picture signal input of digital decoder 6 is connected to 3D filter 1 and outside S port respectively, and its image signal output end is connected to interlacing/motion compensation processor 10, and its control input end links to each other with picture signal main control microprocessor 11;
One is removed interlacing/motion compensation processor 10: its role is under the effect of picture signal main control microprocessor 11, the interlaced video digital signal of importing is become the progressive data export picture signal main control microprocessor 11 to, and the moving image in the picture signal is compensated, occur the sawtooth distortion of moving image profile when avoiding image to show;
Go the signal input part of interlacing/motion compensation processor 10 to be connected to digital decoder 6, signal output part and control input end are connected to picture signal main control microprocessor 11;
A digital display interface (DVI) receiver 7: its role is under the control of picture signal main control microprocessor 11, the video signal of input is converted to parallel image digital signal, and exports picture signal main control microprocessor 11 to and be further processed;
Digital display interface (DVI) receiver 7 has DVI signal external input port, and its signal output part and control input end link to each other with picture signal main control microprocessor 11;
A picture signal main control microprocessor 11, its effect has two aspects, the one, (resolution as the ntsc television signal is 640 * 480 with the data image signal of the different resolution of all accesses, the resolution of HDTV TV signal has 1920 * 1080i or 1280 * 720p etc.) carry out data interpolation or extraction, formation has the video data output of fixed resolution, to reach optimal display result, also can finish picture-in-picture simultaneously, many pictures and screen character show functions such as (OSD), it two is control signals according to the remote signal of sending here through interface link 15 and this machine button, finish operating state control to multipurpose multifunctional operating system in the signal converter, and the part control signal is transferred to assist control microprocessor 12, realize the co-ordination of complete machine, and the part control data can be passed to the large-size screen monitors numerical display device that is connected in interface link 15 through RS232 translation circuit 14;
Picture signal main control microprocessor 11 respectively with from A/D change-over circuit 9, digital decoder 8, go the video data output of interlacing/motion compensation processor 10 output to link to each other, its video data output links to each other with DVI signal encoding circuit 13, its control output end is switched television circuit 4 with 3D filter 1, digital decoder 6, DVI receiver 7, digital decoder 8, A/D change-over circuit 9 and vision signal respectively and is linked to each other, its control input end links to each other with interface link 15, and its control contact end links to each other with RS232 translation circuit 14 and assist control microprocessor 12 respectively;
DVI signal encoding circuit 13: its role is to the video data from the fixed resolution of picture signal main control microprocessor 11 is transformed to digital visual interface (DVI) video data of difference form, and export interface link 15 to;
The input of DVI signal encoding circuit 13 links to each other with picture signal main control microprocessor 11, and its output links to each other with interface link 15;
RS232 translation circuit 14: its role is to the control signal between chromacoder and its external display device is carried out level translation, make it to adapt to the transmission of long cable;
An interface link 15: its role is to provides the system cable connectivity port for chromacoder and external display device, its signal comprises the input/output signal from DVI signal encoding circuit 13, RS232 translation circuit 14, audio frequency/sound effect processing circuit 5, picture signal main control microprocessor 11, and its power supply that complete machine work of the supply chromacoder that provides from external display device also is provided is supplied with.
Below by description, with further understanding thought of the present invention to the signal converter typical operation.
System cable with the signal converter of present embodiment with after the large-size screen monitors numerical display device is connected, power supply supply from display device makes signal converter get electric work, picture signal main control microprocessor 11 is not having from this machine button input and during from remote signal that interface link 15 inserts, opening the picture signal of setting by default mode of operation, is radiofrequency signal 1 as the picture signal of initial setting; Picture signal main control microprocessor 11 is also by default mode of operation, as 1024 * 768 image display formats that are set at initial output;
The control interconnection notice assist control microprocessor 12 of picture signal main control microprocessor 11 by linking to each other with assist control microprocessor 12, control by 12 pairs of RF tuners 2 of assist control microprocessor, make it signal tuning to certain rf tv channel, video signal after 2 demodulation of RF tuner is sent into 3D filter 1, and audio signal then exports audio frequency/sound effect processing circuit 5 to;
Control line is passed through in the little processing 11 of picture signal master control, make 3D filter 1, digital decoder 6, go interlacing/motion compensation processor 10 to enter operate as normal, the light tone separate picture analog signal that obtains through 3D filter 1 from the video signal of RF tuner 2, again through digital decoder 6 output digital image signals, after removing interlacing/motion compensation processor 10, export the data image signal of display format line by line, press the display format of setting to DVI signal encoding circuit 13 output digital image signals by picture signal main control microprocessor 11 again, at last be fit to the differential digital picture signal of long cable transmission through 15 outputs of interface link, and picture signal main control microprocessor 11 will need to cooperate the parameter of image display mode and instruction biography to the large-size screen monitors numerical display device by the large-size screen monitors numerical display device through RS232 translation circuit 14 by DVI signal encoding circuit 13;
Sound accompaniment audio signal in RF tuner 2 demodulation output video images, amplify through audio frequency/sound effect processing circuit 5, after improving acoustics, on the one hand can be by this machine output port output of this chromacoder, be connected to interface link 15 in addition in addition, can be connected to the voicefrequency circuit of large-size screen monitors numerical display device by system cable, and the operating state of audio frequency/sound effect processing circuit 5 is controlled by assist control microprocessor 12;
In case the user is under above-mentioned state, when needing the conversion television channel or switching to another road picture signal equipment work, can be by the input of this machine button on this chromacoder, or use a teleswitch after the large-size screen monitors numerical display device receives, reach the interface link 15 incoming image signal main control microprocessors 11 of this chromacoder via system cable, and control by 11 pairs of corresponding controlled part circuit of picture signal main control microprocessor, picture signal after the renewal is still by 13 outputs of DVI signal encoding circuit, audio signal after the renewal is still by 5 outputs of audio frequency/sound effect processing circuit, and the system cable that is connected by interface link 15 is sent to the large-size screen monitors numerical display device, goes back original image and audio frequency effect by it again.
Image of multiple multi-form this chromacoder of access and corresponding audio signal thereof, switch or make up by picture signal main control microprocessor 11, the single-image of output regulation display mode, the digital display image signals of picture-in-picture or many pictures, behind DVI signal circuit 13 codings, form the differential digital image signal transmission to the large-size screen monitors numerical display device, image corresponding audio signal is then after audio frequency/sound effect processing circuit 5 is handled, export the voicefrequency circuit of large-size screen monitors numerical display device to, though multi-form picture signal has different signal processing modes, its course of work is similar.
In description to the present invention and embodiment, do not relate to other picture signal type that exist at present, but not influencing, this does not increase the possibility that inserts chromacoder involved in the present invention behind the corresponding circuit unit, in addition, development along with digital display technique, new digital picture and transmission of audio signals mode also constantly occur, and under inventive concept, also can construct and be similar to the described chromacoder of embodiment.
Claims (11)
1, a kind of method of converting multiple image signal, various forms of picture signals are carried out conversion, make it to become digital display interface (DVI) digital signal, so just can chromacoder be connected with numerical display device by a unified system cable
2, the method for a kind of converting multiple image signal according to claim 1, it is characterized in that in chromacoder and system cable that numerical display device is connected, increasing control cable and audio signal transmission wire cable, and increase can provide the power cable of working power from numerical display device to chromacoder, numerical display device only needs the single system cable that includes digital display interface (DVI) data with being connected of chromacoder, and the signal of all signalling arrangements that need connect is inserted chromacoder respectively.
3, the method for a kind of converting multiple image signal according to claim 1, it is characterized in that can be by the direct control to chromacoder, or by the remote controller control signal of numerical display device reception from the user, through the control signal of system cable transmission to chromacoder, finish control to chromacoder, in conjunction with operation, just can realize image restoring and the acoustics of signal on numerical display device of various ways to signalling arrangement.
4, the method for a kind of converting multiple image signal according to claim 1 is characterized in that picture signal comprises radio frequency (RF) TV signal, composite video signal (CVBS), S terminal (S_Video) picture signal, color difference signal (YPbPr/YcbCr), 15 pin D plug signal (VGA/S VGA/XGA) and digital display interface signals (DVI).
5, the method for a kind of converting multiple image signal according to claim 1, it is characterized in that exporting data image signal to DVI signal encoding circuit 13 obtaining digital display interface DVI signal by picture signal main control microprocessor 11, and through 15 outputs of interface link.
6, the method of a kind of converting multiple image signal according to claim 1, it is characterized in that picture signal main control microprocessor 11 can accept the data image signal of multiple picture signal, these data image signals can be by being derived from radio frequency (RF) TV signal, be derived from composite video signal (CVBS), being derived from S terminal (S_Video) picture signal obtains through digital decoder 6, or by being derived from color difference signal (YPbPr/YcbCr), be derived from 15 pin D plug signals (VGA/S VGA/XGA) and obtain, or obtain through DVI receiver 7 by being derived from digital display interface signal (DVI) input signal through A/D change-over circuit 9.
7, the method for a kind of converting multiple image signal according to claim 1, it is characterized in that picture signal main control microprocessor 11 also can by with being connected of the control interconnection of assist control microprocessor 12, the transmission control command is with the requirement that realizes multiple picture signal corresponding audio signal is controlled.
8, the method for a kind of converting multiple image signal according to claim 1, it is characterized in that picture signal main control microprocessor 11 also can pass through RS232 translation circuit and interface link 15, finish the numerical display device that system cable is connected and the reception and the transmission of the control signal between chromacoder.
9, a kind of device of converting multiple image signal is characterized in that being made of following part:
Vision signal commutation circuit 4: its role is to the control of subject image signal main control microprocessor 11, respectively video demonstration (VGA) signal or aberration (Y/Pr/Pb or the Y/Cr/Cb) signal that insert are sent into A/D change-over circuit 9;
A/D change-over circuit 9: its role is to the analog picture signal that vision signal commutation circuit 4 is sent here is converted to data image signal, and export picture signal main control microprocessor 11 to;
RF tuner 2: its role is under the control of assist control microprocessor 12, radio frequency (RF) picture signal that inserts is carried out tuning, demodulation, and export the picture signal after the demodulation to 3D filter 1 and handle, and this picture signal is as the main picture image signal, and audio signal output to audio frequency/sound effect processing circuit 5 that demodulation is obtained carries out processing and amplifying;
3D filter 1: its role is to the composite picture signal of input is carried out separating of luminance signal and carrier chrominance signal, and export the picture signal that light tone is separated to digital decoder 6 and be further processed;
A RF tuner 3: its effect is similar with RF tuner 2, but its output is connected to digital decoder 8, and its picture signal can be used as auxilliary picture signal;
Assist control microprocessor 12: its role is under the instruction of picture signal main control microprocessor 11, RF tuner 2, RF tuner 3 and audio frequency/sound effect processing circuit 5 are controlled, to reach the consistent of image frame and sound equipment;
A digital decoder 8: its role is under the control of picture signal main control microprocessor 11, the vision signal of RF tuner 3 outputs is carried out digital conversion, the data image signal that the output light tone is separated is to picture signal master control microprocessor 11;
A digital decoder 6: its effect is similar with digital decoder 8, except that receiving radio-frequency chart from 3D filter 1 as the restituted signal, also can receive picture signal from the S terminal, because this road picture signal is set at main screen signal, the picture signal after its digital conversion exports interlacing/motion compensation processor 10 to and is further processed;
A digital display interface (DVI) receiver 7: its role is under the control of picture signal main control microprocessor 11, the video signal of input is converted to parallel image digital signal, and exports picture signal main control microprocessor 11 to and be further processed;
A picture signal main control microprocessor 11, its effect has two aspects, the one, the data image signal of the different resolution of all accesses is carried out data interpolation or extraction, formation has the video data output of fixed resolution, also can finish picture-in-picture simultaneously, many pictures and screen character show functions such as (OSD), it two is control signals according to the remote signal of sending here through interface link 15 and this machine button, finish operating state control to multipurpose multifunctional operating system in the signal converter, and the part control signal is transferred to assist control microprocessor 12, realize the co-ordination of complete machine, and the part control data can be passed to the large-size screen monitors numerical display device that is connected in interface link 15 through RS232 translation circuit 14;
DVI signal encoding circuit 13: its role is to the video data from the fixed resolution of picture signal main control microprocessor 11 is transformed to digital visual interface (DVI) video data of difference form, and export interface link 15 to;
RS232 translation circuit 14: its role is to the control signal between chromacoder and its external display device is carried out level translation, make it to adapt to the transmission of long cable;
An interface link 15: its role is to provides the system cable connectivity port for chromacoder and external display device, its signal comprises the input/output signal from DVI signal encoding circuit 13, RS232 translation circuit 14, audio frequency/sound effect processing circuit 5, picture signal main control microprocessor 11, and its power supply that complete machine work of the supply chromacoder that provides from external display device also is provided is supplied with.
10, the device of a kind of converting multiple image signal according to claim 9, it is characterized in that also comprising an audio frequency/sound effect processing circuit 5: its role is under the control of assist control microprocessor 12, the various audio signals that to import are respectively amplified and audio is handled, and export external-connected port and interface link 15 to;
11, the device of a kind of converting multiple image signal according to claim 9, it is characterized in that also comprising one and remove interlacing/motion compensation processor 10: its role is under the effect of picture signal main control microprocessor 11, the interlaced video digital signal of importing is become the progressive data export picture signal main control microprocessor 11 to, and the moving image in the picture signal is compensated;
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| CN03139252A CN100593942C (en) | 2003-09-15 | 2003-09-15 | Method and device for converting multiple image signal |
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| CN03139252A CN100593942C (en) | 2003-09-15 | 2003-09-15 | Method and device for converting multiple image signal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448274C (en) * | 2005-09-29 | 2008-12-31 | 圆刚科技股份有限公司 | Image processing device with multiple display function |
| CN102647613A (en) * | 2012-04-12 | 2012-08-22 | 广东威创视讯科技股份有限公司 | Internet protocol video coding box |
| CN105025264A (en) * | 2015-07-20 | 2015-11-04 | 重庆工业职业技术学院 | FPGA and USB2.0-based portable computer video monitoring system |
| CN104853159B (en) * | 2014-12-17 | 2016-09-07 | 奈斯特株式会社 | Picture signal method of reseptance and device |
| CN107817964A (en) * | 2017-11-30 | 2018-03-20 | 北京集创北方科技股份有限公司 | Electronic equipment, display system and its integrated control device |
-
2003
- 2003-09-15 CN CN03139252A patent/CN100593942C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448274C (en) * | 2005-09-29 | 2008-12-31 | 圆刚科技股份有限公司 | Image processing device with multiple display function |
| CN102647613A (en) * | 2012-04-12 | 2012-08-22 | 广东威创视讯科技股份有限公司 | Internet protocol video coding box |
| CN102647613B (en) * | 2012-04-12 | 2015-04-08 | 广东威创视讯科技股份有限公司 | Internet protocol video coding box |
| CN104853159B (en) * | 2014-12-17 | 2016-09-07 | 奈斯特株式会社 | Picture signal method of reseptance and device |
| CN105025264A (en) * | 2015-07-20 | 2015-11-04 | 重庆工业职业技术学院 | FPGA and USB2.0-based portable computer video monitoring system |
| CN107817964A (en) * | 2017-11-30 | 2018-03-20 | 北京集创北方科技股份有限公司 | Electronic equipment, display system and its integrated control device |
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| Publication number | Publication date |
|---|---|
| CN100593942C (en) | 2010-03-10 |
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