CN1545313A - Automatic adjusting system and method for digital convergence of back projection TV - Google Patents
Automatic adjusting system and method for digital convergence of back projection TV Download PDFInfo
- Publication number
- CN1545313A CN1545313A CNA2003101056665A CN200310105666A CN1545313A CN 1545313 A CN1545313 A CN 1545313A CN A2003101056665 A CNA2003101056665 A CN A2003101056665A CN 200310105666 A CN200310105666 A CN 200310105666A CN 1545313 A CN1545313 A CN 1545313A
- Authority
- CN
- China
- Prior art keywords
- convergence
- data
- adjustment
- image
- ccd camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
The invention is a back projecting TV set's digital convergence automatic regulating system and method. The regulating system includes digital convergence control board, CCD camera and image collecting card. The CCD camera and image collecting card are connected by IEEE1394, and the image collecting card is connected with a computer by control interface, and the computer is connected with the digital convergence control board. The CCD camera has 1300x1030 pixels, image collecting card selects 32-bit PCI bus control mode, and digital convergence control chip is STV2050 type. The automatic regulating method includes: image collecting, computer reading image data and position analysis as well as binary analysis of gradation, calculating and regulating the convergent data, etc. It has high regulating precision, strong correcting ability, large allowable error range of position, and low application cost and can be widely applied to automatic regulation for back projecting TV set's digital convergence.
Description
Technical field
The invention belongs to the rear-projection TV set technical field, more particularly relate to the improvement of rear-projection TV set digit convergence automatic adjustment system and method for adjustment.
Background technology
The digit convergence automatic adjustment system mainly is used on the production line of rear-projection TV set (rear-projection TV set that only refers to the CRT type here refers in particular to CRT type rear-projection TV set in below describing).Traditional manual convergence debugging efficiency is too low, and quality is too poor, has become the bottleneck of production in enormous quantities.Therefore, most of in recent years factories have used that the digit convergence automatic adjustment system replaces that efficient is low, the manual of consistency difference assembled debugging, can be factory simultaneously and save a large amount of human resources.
The present digit convergence automatic adjustment system of using in each big television set manufacturer, its control principle is exactly the same.But also exist common defective: 1.Adjust low precision, need manually carry out a large amount of patch works after adjustment finishes automatically.2。Correct indifferently, television set PT positional tolerance scope is less.3。There is uniqueness, only adapts to a kind of in 4: 3 or 16: 9.4。The manufacturing cost height.
Purpose of the present invention, just be to overcome above-mentioned shortcoming and defect, provide the STV2050 of a kind of ST of being based upon company to assemble on the processing controls chip, combining image is handled the systemic engineering and technological research of science and electronic application and control, comprises hardware part and software part, adjusts the precision height, the rectification ability is stronger, television set PT positional tolerance scope is bigger, and range of application is wider, rear-projection TV set digit convergence automatic adjustment system and method for adjustment that application cost is lower.
Summary of the invention
In order to achieve the above object, the present invention includes the CCD camera and the image pick-up card of the convergence grid image signal that the digital convergence control board that is installed in the rear-projection TV set, the rear-projection TV set that is used to take pictures show.The CCD camera is connected with IEEE1394 connecting line body with image pick-up card.Control interface is installed on the image pick-up card, and control interface is also connecting industrial control computer.Be connected auto convergence between industrial control computer and digital convergence control board and adjusting interface.
The CCD camera has 1300 * 1030 pixels, and it is 32 pci bus control mode that image pick-up card is selected data width for use, and the digit convergence control chip on the digital convergence control board is the STV2050 type.
The digit convergence automatic adjustment system generally is by the convergence grid image signal on the synchronous triggering capture card collection television set, the standard network table images signal of simulating with computer relatively then, find out the difference between some characteristic point in the grid image signal, comprise H/V and different colours.
According to the difference on the data within the specific limits, carry out the adjustment of series of features data again, data are corrected in the convergence of using interpolation algorithm to calculate all characteristic points then.Rectification finishes, and carries out IMAQ, analytical calculation repeatedly again.Certainly need to consider because the nonlinear distortion that when images acquired, occurs that difference caused that put the television set position.
The parts that the present invention mainly comprises have: image pick-up card, ccd camera, connecting line body and control interface circuit, Industry Control computer etc.The ccd camera possesses 1300 * 1030 resolution, and picking rate can reach 11.75fps.It is 32 pci bus mode that image pick-up card is selected data width for use, purpose be exactly use pci bus the operating frequency of intrinsic 33MHz.When carrying out image data transmission, can reach the transfer rate of 264mbps like this, and can guarantee to satisfy the pictorial data transmission speed of 1300 * 1030 * 11.75 * 3=45.00mbps fully.Use the IEEE1394 connected mode between image pick-up card and the ccd camera, Industry Control computer expert crosses CCD camera images acquired, carry out then that view data reads, analysis of image data, view data computing, convert at last and assemble control data stream, process computer parallel port is transferred to the convergence control unit plate on the television set.
The model of assembling process chip is STV2050.STV2050 is that the processing controls chip is assembled in the special use that ST company produces, and can control red, green, blue three look each point row-field scanning waveforms respectively, at last through amplifying output RH, RV, GH, GV, BH, BV six road signals.
Automatic adjusting method comprises following set-up procedure:
(1) IMAQ: carry out H synchronous head frequency division by the logic chip on the digital convergence control board and trigger the CCD camera in real time, after the exposure of CCD camera, the convergence grid image signal data that rear-projection TV set is shown is transferred to image pick-up card by IEEEE1394.
(2) industrial control computer is by the control port reads image data and carry out the position analysis of accurate convergence grid intersection, and the image of tonal gradation is through the binaryzation analysis.
(3) will carry out computing and adjustment through the convergence data of binaryzation analysis.Comprise:
1. by complete white field signal, detect the television screen outer rim.Calculate because of the angle of television set and the visual trapezoidal distortion that the distortion of camera lens own causes, calculate the desired center position of current television set simultaneously according to outer rim.Find out the television set static shift according to the center of reality and the difference between the desired center position;
2. static adjustment center: by adjusting the OSD position, green center and desired center are overlapped, the static shift of adjusting red and blue look then overlaps the center;
3. adjust redness, green, blue look convergence respectively: native system is in course of adjustment, and extracts 5 * 5 characteristic points earlier and carries out the interpolation algorithm computing, uses 16 * 13 to carry out meticulous adjustment then, guarantees that R, G, the convergence of B three looks overlap fully;
4. preserve data: adjustment finishes, and the user can set up automatic preservation data on their own or manually preserve data;
5. switch television system: the compatible multiple television scanning pattern of native system, the data of every kind of scan pattern are stored separately, and a kind of mode adjustment finishes, and restarts the new state adjustment after the user is replaceable, and does not need to withdraw from native system.
Task of the present invention comes to this and finishes.
The STV2050 that the invention provides a kind of ST of being based upon company assembles on the processing controls chip, combining image is handled the systemic engineering and technological research of science and electronic application and control, comprise hardware part and software part, adjustment precision height, the rectification ability is stronger, television set PT positional tolerance scope is bigger, and range of application is wider, rear-projection TV set digit convergence automatic adjustment system and method for adjustment that application cost is lower.It can be widely used in the automatic adjustment of rear-projection TV set digit convergence.
Description of drawings
Fig. 1 is the structural representation of automatic adjustment system of the present invention.
Fig. 2 is the schematic diagram of control interface.
Fig. 3 adjusts the pin definitions of interface for auto convergence.
Fig. 4～Fig. 6 is respectively 378H, the 379H of the parallel interface of computer reservation, the definition of 37AH port.
Fig. 7 is the signal of its control method.
Fig. 8 is the schematic diagram of binaryzation analytic process.
Fig. 9 is for assembling the schematic diagram of data operation and adjustment process.
Embodiment
Embodiment 1.A kind of automatic adjustment system of rear-projection TV set digit convergence, as shown in Figure 1.The CCD camera 3 and the image pick-up card 4 of the convergence grid image signal that it comprises the digital convergence control board 2 that is installed in the rear-projection TV set 1, the rear-projection TV set 1 that is used to take pictures shows.CCD camera 3 is connected with IEEE1394 connecting line body 5 with image pick-up card 4.Control interface 6 is installed on the image pick-up card 4, and control interface 6 is also connecting industrial control computer 7.Be connected auto convergence between industrial control computer 7 and digital convergence control board and adjusting interface 8.CCD camera 3 has 1300 * 1030 pixels.It is 32 pci bus control mode that image pick-up card 4 is selected data width for use.Digit convergence control chip on the digital convergence control board 2 is the STV2050 type.
Fig. 2 shows the control interface 6 that connects image pick-up card 4 and industrial control computer 7.Fig. 3 adjusts the pin definitions of interface for auto convergence.
In native system control,, the final effect of last operational data assembles the preservation that chip STV2050 takes place and carry out data because being exactly control.So just, require system when formulating, must use the mode of iic bus to carry out the control of STV2050 and E2PROM.The programmed method of owing the embedding compilation in the present invention uses carries out parallel port control, and is relatively more succinct, convenient and directly perceived at software like this.Computer has been reserved the I/O address of parallel interface in configuration, a parallel port possesses 3 ports: FPDP, status port, control port.As: three port addresss of LPT1 are respectively: FPDP 378H, status port 379H, control port 37AH.FPDP is as output port, and status port is as input port, and control port is as input/output end port.The native system control program just is to use LPT1.Port specific definition and control method are seen Fig. 4, Fig. 5, Fig. 6 and Fig. 7 respectively.
Embodiment 2.A kind of method of adjustment of using embodiment 1 rear-projection TV set digit convergence automatic adjustment system.It comprises following set-up procedure:
(1) IMAQ: carry out H synchronous head frequency division by the logic chip on the digital convergence control board and trigger the CCD camera in real time, after the exposure of CCD camera, the convergence grid image signal data that rear-projection TV set is shown is transferred to image pick-up card by IEEEE1394;
(2) industrial control computer is by the control port reads image data and carry out the position analysis of accurate convergence grid intersection, and the image of tonal gradation is through the binaryzation analysis;
(3) will carry out computing and adjustment through the convergence data of binaryzation analysis, comprise:
1. by complete white field signal, detect the television screen outer rim.Calculate because of the angle of television set and the visual trapezoidal distortion that the distortion of camera lens own causes, calculate the desired center position of current television set simultaneously according to outer rim.Find out the television set static shift according to the center of reality and the difference between the desired center position;
2. static adjustment center: by adjusting the OSD position, green center and desired center are overlapped, the static shift of adjusting red and blue look then overlaps the center;
3. adjust redness, green, blue look convergence respectively: native system is in course of adjustment, and extracts 5 * 5 characteristic points earlier and carries out the interpolation algorithm computing, uses 16 * 13 to carry out meticulous adjustment then, guarantees that R, G, the convergence of B three looks overlap fully;
4. preserve data: adjustment finishes, and the user can set up automatic preservation data on their own or manually preserve data;
5. switch television system: the compatible multiple television scanning pattern of native system, the data of every kind of scan pattern are stored separately, and a kind of mode adjustment finishes, and restarts the new state adjustment after the user is replaceable, and does not need to withdraw from native system.
During IMAQ, carry out H synchronous head frequency division by the logic chip on the converging plate and trigger the CCD camera in real time.After the exposure of CCD camera, transmit image data is to image pick-up card.Then, the computer reads image data is carried out data analysis, integrated code segment following (because image data amount is big, using IEEEE1394 to carry out transfer of data between CCD camera and the image collection card):
..............SUBDESIGN hisense( VSYNC，HSYNC ：INPUT； CAMERA_TRIG ：OUTPUT； ...........) BEGIN ........... vblk_count.clock＝dff(VSYNC，HSYNC，，)；--dff(dff(VSYNC，HSYNC，，)＆dff(dff(VSYNC，HSYNC，，)，HSYNC，，)，！HSYNC，，)；CAMERA_TRIG＝dff(vblk_count.q[]＝＝B″0001″，HSYNC，，)；--tff(vcc，dff(vsync，hsync，，)，，)； ........
Image processing method is as follows:
The image of gathering behind the CCD camera exposure (the monochromatic collection) is generally the image that possesses certain tonal gradation.In auto convergence Adjustment System of the present invention, carry out the position analysis of accurate convergence grid intersection, the image of tonal gradation must pass through the binaryzation analysis.So-called binaryzation analysis makes image be converted into than the bianry image information that is easier to and handles exactly.Bianry image is a kind of simple picture format, and it has only two gray scales, and promptly " 0 " represents the pixel of black, the pixel of " 255 " expression white.The process that binaryzation is analyzed is as seen shown in Figure 3.
In carrying out the image binarization process, choosing suitable threshold values is a crucial step.Should pictorial data be cut apart by a specific threshold values, but for rear-projection TV set, can not effectively handle the problem of image binaryzation if adopt common a certain specific threshold, because the image-forming principle of rear-projection TV set has determined visual mid portion brightness height, and the marginal portion is dim.Therefore, when analyzing by threshold values, the marginal portion is removed probably.Reasonable method just is to use iteration to ask the binarization method of image optimum segmentation threshold.Specific implementation is with visual part fritter, calculates the critical value of every fritter image, for different fritter images, according to the pixel difference of region, adds certain constant amount as this regional binaryzation critical value on the critical value basis in zone.But the region area that requires to select can not be too little, so just brings the big consequence of amount of calculation.
Binary Images Processing occupies an important position equally in image processing field.In native system, often need the bianry image that obtains is further processed work, so that help the evaluation work in later stage.The binary Images Processing computing is that the set theory method under the mathematical morphology grows up.Binary Images Processing operation commonly used has many methods, as burn into expansion, refinement, opening operation and closed operation or the like.
The basic morphology operations of bianry image is corrosion and expands that simple corrosion is a kind of process of eliminating all boundary points of object, consequently makes remaining object along the area of its periphery than the little pixel of the original.If object is round, its diameter will reduce by two pixels after each corrosion, if object is a bit located the coconnected pixel of any direction less than three at certain, this object will be through once being split into two objects at this some place after the corrosion so.Simple dilation operation is that all background dots that will contact with object merge to the process in this object.The result of process makes the area of object increase the point of respective numbers.If object is round, its diameter will increase two pixels after each the expansion.If two objects are separated by at certain any any direction and are less than three pixels, they will be communicated with get up at this point.Corrosion can the medium and small noise region of removal of images, and expansion can be filled up the cavity in the object.The operating process of an image being carried out erosion operation and then expansion earlier is called opening operation, and it can be eliminated tiny object, separate object at very thin some place, its area of unconspicuous change during the border of level and smooth larger object.If to expansion of an image elder generation and then contraction, be referred to as closed operation, it has cavity tiny in the object, connection adjacent object, the smoothly effect on its border under the situation of not obvious change object area of filling.Generally, after the image of noise was with threshold binarization, resulting border was very rough, and object area has the hole of some misjudgement, and the background area is studded with some little noise objects.Continuous open and close computing can improve this situation significantly, at this time need add the expansion of same number after connection is corroded iteration several times, just can produce desired effect.
Provide below and realize corrosion and the function code that expands in the native system:
// // // // // // // // // // // // // // // // bianry image corrosion handling function BOOL ImageErosion (BYTE*pData, int Width, int Height) //pData is the pointer of view data, Width and Height are the wide and high of image; BYTE*pData1; Int m, n, i, j, sum, k, sum1; BOOL bErosion; If (pData==NULL) { AfxMessageBox (" view data is empty, asks reads image data "); Return FALSE; } // application space, pData1 deposits the data after the processing; PData1=(BYTE*) new char[WIDTHBYTES (Width*8) * Height]; Image data buffer ") is please applied in the application failure of if (pData1==NULL) { AfxMessageBox (" image buffers data field again; Return FALSE; Memcpy (pData1, pData, WIDTHBYTES (Width*8) * Height); For (i=10; I＜Height-10; I++) for (j=32; J＜Width-32; J++) { bErosion-FALSE; Sum=* (pData+WIDTHBYTES (Width*8) * i+j); If (sum==255) // ask the gray average of pixel eight neighborhoods; For (m=-1; M＜2; M++) { for (n=-1; N＜2; N++)＜!--SIPO＜DP n=" 7 "〉--〉＜dp n=" d7 "/{ sum1=* (pData+WIDTHBYTES (Width*8) * (i+m)+j+n); If (sum1==0) { * (pData1+WIDTHBYTES (Width*8) * i+j)=0; BErosion=TRUE; Break; If (bErosion) { bErosion=FALSE; Break; Memcpy (pData, pData1, WIDTHBYTES (Width*8) * Height); Return TRUE; } // // // // // // // // // // // // // // // // // // expansive working BOOL ImageDilation (BYTE*pData, int Width, int the Height) { BYTE*pData1 of bianry image; Int m, n, i, j, sum, k, sum1; BOOL bDilation; If (pData==NULL) { AfxMessageBox (" view data is empty, asks reads image data "); Return FALSE;＜!--SIPO＜DP n=" 8 "〉--〉＜dp n=" d8 "/// the application space, pData1 deposits the data after the processing; PData1=(BYTE*) new char[WIDTHBYTES (Width*8) * Height]; Image data buffer ") is please applied in the application failure of if (pData1==NULL) { AfxMessageBox (" image buffers data field again; Return FALSE; Memcpy (pData1, pData, WIDTHBYTES (Width*8) * Height); For (i=10; I＜Height-10; I++) for (j=32; J＜Width-32; J++) { bDilation=FALSE; Sum=* (pData+WIDTHBYTES (Width*8) * i+j); If (sum==0) // ask the gray value of pixel eight neighborhoods; For (m=-1; M＜2; M++) { for (n=-1; N＜2; N++) { sum1=* (pData+WIDTHBYTES (Width*8) * (i+m)+j+n); If (sum1==255) { * (pData1+WIDTHBYTES (Width*8) * i+j)=255; BDilation=TRUE; Break; If (bDilation)＜!--SIPO＜DP n=" 9 "〉--〉＜dp n=" d9 "/{ bDilation=FALSE; Break; Memcpy (pData, pData1, WIDTHBYTES (Width*8) * Height); Return TRUE; }
Fig. 9 shows the process of assembling data operation and adjustment.
Claims (3)
1. rear-projection TV set digit convergence automatic adjustment system, the CCD camera and the image pick-up card of the convergence grid image signal that comprise the digital convergence control board that is installed in the rear-projection TV set, the rear-projection TV set that is used to take pictures shows, it is characterized in that the CCD camera is connected with IEEE1394 connecting line body with image pick-up card, control interface is installed on the image pick-up card, control interface is also connecting industrial control computer, is being connected auto convergence between industrial control computer and digital convergence control board and is adjusting interface.
2. according to the described rear-projection TV set digit convergence of claim 1 automatic adjustment system, it is characterized in that said CCD camera has 1300 * 1030 pixels, it is 32 pci bus control mode that image pick-up card is selected data width for use, and the digit convergence control chip on the digital convergence control board is the STV2050 type.
3. automatic adjusting method according to the described rear-projection TV set digit convergence of claim 1 automatic adjustment system is characterized in that it comprises following set-up procedure:
(1) IMAQ: carry out H synchronous head frequency division by the logic chip on the digital convergence control board and trigger the CCD camera in real time, after the exposure of CCD camera, the convergence grid image signal data that rear-projection TV set is shown is transferred to image pick-up card by IEEEE1394;
(2) industrial control computer is by the control port reads image data and carry out the position analysis of accurate convergence grid intersection, and the image of tonal gradation is through the binaryzation analysis;
(3) will carry out computing and adjustment through the convergence data of binaryzation analysis, comprise:
1. by complete white field signal, detect the television screen outer rim.Calculate because of the angle of television set and the visual trapezoidal distortion that the distortion of camera lens own causes, calculate the desired center position of current television set simultaneously according to outer rim.Find out the television set static shift according to the center of reality and the difference between the desired center position;
2. static adjustment center: by adjusting the OSD position, green center and desired center are overlapped, the static shift of adjusting red and blue look then overlaps the center;
3. adjust redness, green, blue look convergence respectively: native system is in course of adjustment, and extracts 5X5 characteristic point earlier and carries out the interpolation algorithm computing, uses 16 * 13 to carry out meticulous adjustment then, guarantees that R, G, the convergence of B three looks overlap fully;
4. preserve data: adjustment finishes, and the user can set up automatic preservation data on their own or manually preserve data;
5. switch television system: the compatible multiple television scanning pattern of native system, the data of every kind of scan pattern are stored separately, and a kind of mode adjustment finishes, and restarts the new state adjustment after the user is replaceable, and does not need to withdraw from native system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310105666 CN1226871C (en) | 2003-11-17 | 2003-11-17 | Automatic adjusting system and method for digital convergence of back projection TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310105666 CN1226871C (en) | 2003-11-17 | 2003-11-17 | Automatic adjusting system and method for digital convergence of back projection TV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1545313A true CN1545313A (en) | 2004-11-10 |
| CN1226871C CN1226871C (en) | 2005-11-09 |
Family
ID=34333846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310105666 Expired - Fee Related CN1226871C (en) | 2003-11-17 | 2003-11-17 | Automatic adjusting system and method for digital convergence of back projection TV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226871C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327326C (en) * | 2004-12-28 | 2007-07-18 | 义隆电子股份有限公司 | Fast detection method for optical sensing module and collocated subassemblies |
| CN105208459A (en) * | 2015-09-09 | 2015-12-30 | 余芳 | Method for adjusting color reduction capability of television set through set top box |
-
2003
- 2003-11-17 CN CN 200310105666 patent/CN1226871C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327326C (en) * | 2004-12-28 | 2007-07-18 | 义隆电子股份有限公司 | Fast detection method for optical sensing module and collocated subassemblies |
| CN105208459A (en) * | 2015-09-09 | 2015-12-30 | 余芳 | Method for adjusting color reduction capability of television set through set top box |
| CN105208459B (en) * | 2015-09-09 | 2019-05-21 | 余芳 | The method of the color reducing power of television set is adjusted by set-top box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1226871C (en) | 2005-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108416355B (en) | Industrial field production data acquisition method based on machine vision | |
| CN109520706B (en) | Screw hole coordinate extraction method of automobile fuse box | |
| US5841899A (en) | Specific color field recognition apparatus and method | |
| CN106097368A (en) | A kind of recognition methods in veneer crack | |
| CN113160222A (en) | Production data identification method for industrial information image | |
| CN110766636B (en) | Intelligent image processing method for AI chip | |
| JP2006039689A (en) | Image processor, image processing method, image processing program, and recording medium with the program recorded thereon | |
| CN108711160B (en) | Target segmentation method based on HSI (high speed input/output) enhanced model | |
| CN101315664A (en) | Text image preprocessing method for character recognition | |
| CN111491149A (en) | Real-time image matting method, device, equipment and storage medium based on high-definition video | |
| CN112348018A (en) | Digital display type instrument reading identification method based on inspection robot | |
| WO2023005115A1 (en) | Image processing method, image processing apparatus, electronic device, and readable storage medium | |
| US20070009173A1 (en) | Apparatus and method for shading correction and recording medium therefore | |
| CN1545313A (en) | Automatic adjusting system and method for digital convergence of back projection TV | |
| CN116704320A (en) | Visual monitoring system and method for arc additive manufacturing equipment | |
| CN116051681B (en) | Processing method and system for generating image data based on intelligent watch | |
| CN109671081B (en) | Bad cluster statistical method and device based on FPGA lookup table | |
| CN116403200A (en) | License plate real-time identification system based on hardware acceleration | |
| CN114449131A (en) | Moving target detection system based on ZYNQ acceleration | |
| CN115482207A (en) | Bolt looseness detection method and system | |
| CN110677635B (en) | Data parameter field setting system | |
| CN110516667B (en) | Character horizontal correction method based on android | |
| CN101039437A (en) | Method for reading automatically digital image video | |
| CN111899184A (en) | Image defect repairing and neural network training method, device, equipment and system | |
| CN2747812Y (en) | Special digital focusing auto regulator for 16:9 back projecting TV |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20051109 Termination date: 20111117 |