Title of Invention

A METHOD AND SYSTEM FOR GENERATING A FRAME OF VIDEO DATA

Abstract

The shape processor is a rendering module that may be used to stream graphical objects having a predefined format into a frame buffer or a physical display. Documents to be rendered by the shape processor may be decomposed into primitive graphical objects and passed to the shape processor, which may in turn compose the objects for display. Composed objects are then blended into current video data on an object by object basis.

Full Text

FIELD OF INVENTION : The present invention is directed to developing a flat plate conveyor furnace for atmospheric pressure chemical vapor deposition for depositing thin film of TiO2, wherein the substrate can be heated uniformly in order to achieve better uniformity of the deposited film. BACKGROUND ART: It is well known in the art of depositing thin films, said deposition is achieved by well established technique for thin film deposition by Atmospheric pressure chemical vapor deposition (APCVD). This technique is mainly used where non-hazardous materials are used and also with non-hazardous byproduct, for the deposition of thin films of different thicknesses. APCVD is also a very commonly applied method for the deposition of TiO2 thin films. Usually in an APCVD furnace the conveyer belt and substrates (on which film is deposited) are heated by infrared (IR) lamp. Conveyer belts are usually made up of metal mesh. This hot metal belt causes non-uniform heating of the substrates because of its mesh type of structure. This type of non-uniform heating of substrate introduces non-uniformity in the deposited film and a mesh like pattern can be observed on deposited film. There was therefore, the persistent need to develop a method to fabricate a furnace/ heating device that would eliminate the aforedescribed limitations of the APCVD process so as to achieve uniform heating in a conveyer system resulting in consistently uniform thickness of deposited film. THE OBJECTS OF THE INVENTION: The basic object of the present invention is therefore directed to developing a flat plate conveyor system such that the subtrate can be heated uniformly to obtain better uniformity of the APCVD deposited film. A further object of the present invention is directed to a conveyor system to achieve said uniformity of heating, wherein said conveyor system is operated being advantageously driven by spur gear and chain links. A further object of the present invention is directed to a conveyor system to achieve said uniformity of heating and that of APCVD deposited film, flat are selectively attached to alternate links of the chain and bars metal plates are attached to alternate flat bars, such that the each plate in upper horizontal position in a operating conveyor gets supported by two flat bars from bottom, at front and back side of the plate. A further object of the present invention is directed to a conveyor system to achieve said uniformity of heating and that of APCVD deposited film, said horizontal position of the plates maintained and supported by a pair of flat bars, help maintaining uniform distance from the injection head. A further object of the present invention is directed to a conveyor system to achieve said uniformity of heating and that of APCVD deposited film, the holes for linkages of flat bars and metal plates are preferably elliptical holes to avoid bending due to thermal expansion such that the desired uniformity of the deposited film is maintained. A further object of the present invention is directed to a conveyor system to achieve said uniformity of heating and that of APCVD deposited film, the plates as well as the subtrates are cooled down after coming out of the hot zone. A still further object of the present invention is directed to a conveyor system to achieve said uniformity of heating and that of APCVD deposited film, said flat plate type conveyor helps maintaining uniform temperature of the subtrate spatially and that in turn helps achieving spatial uniformity of the deposited film. Yet another object of the present invention is directed to a conveyor system to achieve said uniformity of heating and that of APCVD deposited film, the present system of heating and deposition when applied for making TiO2 film, improves the quality antireflection coating and improves the absorption ;f light which in turn improves the efficiency of solar cell using such TiO2 film as antireflection coating. SUMMARY OF INVENTION: The basic aspect of the present invention is directed to developing a conveyor furnace adapted to provide means for obtaining better uniformity of heating and deposition of the APCVD deposited film, and in particular deposition of TiO2 film. In particular according to an aspect of the invention, there is provided a conveyor system for uniform heating comprising using spur gear and chain link such that the subtrate can be heated uniformly to obtain improved uniformity of the APCVD deposited film; Metal plate means supported by flat bars from bottom, being attached to the chain links operatively to said conveyor to favor said uniformity of APCVD deposited film; said horizontal position of the plates maintained and supported by a pair of flat bars, help maintaining uniform distance from the injection head facilitating deposition of uniform film thickness; said uniformity of heating and that of APCVD deposited film, system of applied for making TiO2 film, improves the quality of antireflection coating and improves the absorption of light which in turn improves the efficiency of solar cell using such TiO2 film as antireflection coating. A further aspect of the present invention is directed to developing a conveyor furnace adapted to provide means for obtaining improved uniformity of heating and deposition of the APCVD deposited film, said plates mounted on said chain links as well as the subtrate is cooled down after coming out of the hot zone; A further aspect of the present invention is directed to developing a conveyor furnace adapted to provide means for obtaining improved uniformity of heating and deposition of the APCVD deposited film, wherein said conveyor is provided with means for online cleaning of the metal plates by metal brush followed by ultrasonic cleaning in water preferably to avoid any deposition on the plate itself. A further aspect of the present invention is directed to developing a conveyor furnace adapted to provide means for obtaining improved uniformity of heating and deposition of the APCVD deposited film, said flat plates on the conveyor help to maintain uniform temperature of the subtrate spatially and thereby to achieve spatial uniformity of the deposited film; The present invention and its objects and advantages are described in greater details with particular reference to the accompanying figures. BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES: Figure 1: is the illustration of the Upper view of the flat plate conveyer wherein the Belt is seen to be coming out of the processing zone, according to the present invention. Figure 2: is the illustration of the Lower view of the flat plate conveyer before entering into processing zone. Figure 3: is the illustration of the arrangement of the Spur gear and Chain system for the movement of the belt conveyer. DETAILED DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING FIGURES: The conveyor furnace of the present invention adapted to provide means for obtaining improved uniformity of heating and deposition of the APCVD deposited film by the conveyer system using spur gear and chain, as developed, are illustrated in the following accompanying figures below. Reference is first invited to accompanied figure 1, the conveyor is having Flat bars were attached to alternate links of the chain. Metal plates were attached to alternate flat bars. The links of the chain and the flat bars were designed in a way such that, whenever the plates comes into upward horizontal position it get support from bottom by two flat bars at the front and backside as shown in Figure 1. Here flat plate marked as "A" is attached to flat bar "2" and is being supported by bar "1" at back and by bar "2" at front, both placed at bottom side of plate "A". This supports by two other flat bars helps to keep the plates horizontal and thus maintain uniform distance from the injection head used for the desired uniformity of APCVD deposition of film. All the holes through which the flat bars and metal plates were attached to the chain and bars were designed for elliptical holes to avoid bending due to thermal expansion. Reference is now invited to accompanying Figure 2 that illustrates the Lower view of the flat plate conveyer comprising bottom side view of the flat bars connected to chain links and the metal bars they support, before entering into processing zone where it maintains the horizontal flat moving surface of the conveyer of the present invention for desired uniformity of film deposition. Reference is now invited to accompanying Figure 3, that illustrates the drive arrangement provided by means of Spur gear and Chain system for the desired horizontal movement of the Flat plate conveyer at the upper level. The present flat plate conveyer furnace is thus capable of producing thin films by APSVD method maintaining uniformity of heating and also depositing the film uniformly, preferably for the deposition of TiO2 film, favouring improving the quality of antireflection coating making it capable for improving efficiency of solar cells where such films are used, by way of higher light absorption. P28662/P37516 Divisional Claims 1. A method of generating a frame of video data comprising a pixel array from a stream of graphical objects, the method comprising: a. providing a pixel array corresponding to the video frame; b. receiving said stream of graphical objects, each graphical object having a set of parameters that define an image, said parameters including a shape, at least one fill value and at least one transparency value; c. processing said stream of graphical objects on an object by object basis to determine a pixel value for each pixel in said array, wherein processing said stream of graphical objects comprises: for each object: d. determining a first pixel value for each pixel in said array from the product of said fill value and a first factor that is the product of said transparency value and an edge value; and e. blending the first pixel value for each pixel with a current pixel value for that pixel by de-weighting the current pixel value by a second factor complementary to said first factor and summing the first pixel value and the de- weighted current pixel value. 2. The method of claim 1, wherein said edge value has a value between 0 and 1 inclusive, the edge value indicating the proportion of a particular pixel that is inside said shape. 3. The method of claim 1 or claim 2, wherein the transparency comprises a 4. transparency value or a pointer to a bitmap of transparency values. 5. The method of any preceding claim, wherein the fill includes at least one of a 6. color, a texture, or a bitmap. 7. The method of any preceding claim, wherein the shape comprises a path 8. including a plurality of segments. 6. The method of any preceding claim, wherein the processing of each 7. graphical object further comprises converting the shape of the object into a data 8. structure of encoded scan data, the data structure containing one data segment 9. for each scan line of the pixel array. 10. The method of claim 6 wherein each data segment describes pixel state 11. information. 12. The method of claim 7 wherein the pixel state information includes at least 13. one of i) an inside state followed by a run length in pixels of pixels inside the 14. shape, ii)an outside state followed by a run length in pixels of pixels outside the 15. shape, or iii) an edge state followed by a number of pixels in the edge and said 16. edge value for each of the pixels in the edge. 17. The method of any one of claims 6 to 8, wherein the blending is done one 18. scan-line at a time. 19. The method of one any of claims 6 to 9, wherein the shape of a graphical 20. object is represented as a clip mask of encoded scan data. 11. The method of Claim 10, wherein blending includes accessing the clip mask and blending encoded scan data associated with the clip mask. 12. A system for generating a frame of video data comprising a pixel array from a stream of graphical objects, the system comprising: a. a frame buffer for storing a pixel array corresponding to the video frame; b. an input mechanism for receiving said stream of graphical objects, each graphical object having a set of parameters that define an image, said parameters including a shape, at least one fill value and at least one transparency value; c. a shape processor for processing said stream of graphical objects on an object by object basis to determine a pixel value for each pixel in said array, wherein processing said stream of graphical objects comprises: for each object: d. determining a first pixel value for each pixel in said array from the product of said fill value and a first factor that is the product of said transparency value and an edge value; and e. blending the first pixel value for each pixel with a current pixel value for that pixel by de-weighting the current pixel value by a second factor complementary to said first factor and summing the first pixel value and the de- weighted current pixel value. 13. The system of claim 12, wherein said edge value has a value between 0 and 1 inclusive, the edge value indicating the proportion of a particular pixel that is inside said shape 14. The system of claim 12 or claim 13, wherein the transparency comprises a 15. transparency value or a pointer to a bitmap of transparency values. 16. The system of any of claims 12 to 14, wherein the fill includes at least one of 17. a color, a texture, or a bitmap. 18. The system of any of claims 12 to 15, wherein the shape comprises a path 19. including a plurality of segments. 17. The system of any of claims 12 to 16, wherein the processing of each graphical object further comprises converting the shape of the object into a data structure of encoded scan data, the data structure containing one data segment for each scan line of the pixel array. 18. The system of claim 17 wherein each data segment describes pixel state information. 19. The system of claim 18 wherein the pixel state information includes at 20. least one of i) an inside state followed by a run length in pixels of pixels inside the 21. shape, ii)an outside state followed by a run length in pixels of pixels outside the 22. shape, or iii) an edge state followed by a number of pixels in the edge and said 23. edge value for each of the pixels in the edge. 24. The system of any one of claims 17 to 19, wherein the blending is done 25. one scan-line at a time. 21. The system of one any of claims 17 to 20, wherein the shape of a graphical object is represented as a clip mask of encoded scan data. 22. The system of Claim 21, wherein blending includes accessing the clip mask and blending encoded scan data associated with the clip mask.

Documents:

0112-chenp-2007-abstract.pdf

0112-chenp-2007-assignement.pdf

0112-chenp-2007-claims.pdf

0112-chenp-2007-correspondnece-others.pdf

0112-chenp-2007-description(complete).pdf

0112-chenp-2007-drawings.pdf

0112-chenp-2007-form 1.pdf

0112-chenp-2007-form 3.pdf

0112-chenp-2007-form 5.pdf

0112-chenp-2007-pct.pdf

112-CHENP-2007 CORRESPONDENCE OTHERS 13-06-2013.pdf

112-CHENP-2007 OTHER PATENT DOCUMENT 13-06-2013.pdf

112-CHENP-2007 AMENDED PAGES OF SPECIFICATION 13-06-2013.pdf

112-CHENP-2007 AMENDED CLAIMS 24-07-2013.pdf

112-CHENP-2007 AMENDED CLAIMS 13-06-2013.pdf

112-CHENP-2007 AMENDED PAGES OF SPECIFICATION 24-07-2013.pdf

112-CHENP-2007 CORRESPONDENCE OTHERS 24-07-2013.pdf

112-CHENP-2007 CORRESPONDENCE OTHERS 15-07-2013.pdf

112-CHENP-2007 CORRESPONDENCE OTHERS 24-12-2012.pdf

112-CHENP-2007 EXAMINATION REPORT REPLY RECEIVED 13-06-2013.pdf

112-CHENP-2007 FORM-1 13-06-2013.pdf

112-CHENP-2007 OTHER PATENT DOCUMENT 15-07-2013.pdf

112-chenp-2007 form-13 28-09-2007.pdf

112-CHENP-2007 FORM-3 24-12-2012.pdf

112-CHENP-2007 FORM-13 28-01-2010.pdf

112-CHENP-2007 FORM-6 28-01-2010.pdf