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Class Information
Number: 345/422
Name: Computer graphics processing, operator interface processing, and selective visual display systems > Computer graphics processing > Three-dimension > Hidden line/surface determining > Z buffer (depth buffer)
Description: Subject matter wherein a memory having locations corresponding to display locations stores distance information* which is used to determine which objects or portions of objects are hidden.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5522018 |
Sorting processing system and image synthesizing system using the same |
May. 28, 1996 |
| 5517603 |
Scanline rendering device for generating pixel values for displaying three-dimensional graphical images |
May. 14, 1996 |
| 5515482 |
Sorting apparatus and method for sorting data in sequence of reference levels indicated by the data |
May. 7, 1996 |
| 5511154 |
Method and apparatus for managing concurrent access to multiple memories |
Apr. 23, 1996 |
| 5509110 |
Method for tree-structured hierarchical occlusion in image generators |
Apr. 16, 1996 |
| 5502505 |
Special effect video apparatus for achieving extended dimming and fading effects |
Mar. 26, 1996 |
| 5502798 |
Image processing apparatus for synthesizing Z-axis coordinate data using X- and Y-direction increments |
Mar. 26, 1996 |
| 5497453 |
Method and apparatus for detecting and visualizing interferences between solids |
Mar. 5, 1996 |
| 5493644 |
Polygon span interpolator with main memory Z buffer |
Feb. 20, 1996 |
| 5490238 |
Attribute blending system for composing computer-graphic images from objects |
Feb. 6, 1996 |
| 5471567 |
Image element depth buffering using two buffers |
Nov. 28, 1995 |
| 5459822 |
Sorting processor |
Oct. 17, 1995 |
| 5442736 |
Correlation of cursor position to shapes displayed on a video display screen |
Aug. 15, 1995 |
| 5428716 |
Solid-clip methodology and architecture for clipping solid models and displaying cross-sections using depth-buffers |
Jun. 27, 1995 |
| 5420966 |
Method and apparatus for filling an object based rasterized image |
May. 30, 1995 |
| 5416893 |
Method for displaying edging or decaling of an object in a graphics display |
May. 16, 1995 |
| 5408272 |
Method of producing a composited video image based on depth |
Apr. 18, 1995 |
| 5408593 |
Apparatus and method for creating video images including soft-edge processing |
Apr. 18, 1995 |
| 5402532 |
Direct display of CSG expression by use of depth buffers |
Mar. 28, 1995 |
| 5394202 |
Method and apparatus for generating high resolution 3D images in a head tracked stereo display system |
Feb. 28, 1995 |
| 5379370 |
Method and apparatus for drawing lines, curves, and points coincident with a surface |
Jan. 3, 1995 |
| 5377313 |
Computer graphics display method and system with shadow generation |
Dec. 27, 1994 |
| 5363475 |
Image generator for generating perspective views from data defining a model having opaque and translucent features |
Nov. 8, 1994 |
| 5359704 |
Method for selecting silhouette and visible edges in wire frame images in a computer graphics display system |
Oct. 25, 1994 |
| 5341462 |
Figure drawing method and apparatus for drawings accentuated lines |
Aug. 23, 1994 |
| 5339386 |
Volumetric effects pixel processing |
Aug. 16, 1994 |
| 5329613 |
Apparatus and method for relating a point of selection to an object in a graphics display system |
Jul. 12, 1994 |
| 5325485 |
Method and apparatus for displaying primitives processed by a parallel processor system in a sequential order |
Jun. 28, 1994 |
| 5321809 |
Categorized pixel variable buffering and processing for a graphics system |
Jun. 14, 1994 |
| 5309550 |
Method and apparatus for three dimensional display with cross section |
May. 3, 1994 |
| 5301263 |
High memory bandwidth system for updating z-buffer values |
Apr. 5, 1994 |
| 5295234 |
Apparatus for displaying a three dimensional object which appears substantially the same in different display directions by modifying stored image data by a scale factor |
Mar. 15, 1994 |
| 5293467 |
Method for resolving priority between a calligraphically-displayed point feature and both raster-displayed faces and other calligraphically-displayed point features in a CIG system |
Mar. 8, 1994 |
| 5280568 |
Method and apparatus for drawing a surface model by assigning a drawing priority to each primitive surface model which provides a portion of the surface model |
Jan. 18, 1994 |
| 5271094 |
Z-buffer quantization of three-dimensional lines |
Dec. 14, 1993 |
| 5268995 |
Method for executing graphics Z-compare and pixel merge instructions in a data processor |
Dec. 7, 1993 |
| 5265214 |
Filling processing apparatus and method |
Nov. 23, 1993 |
| 5265199 |
Method and apparatus for accomplishing Z-buffering by prediction |
Nov. 23, 1993 |
| 5265198 |
Method and processor for drawing `polygon with edge`-type primitives in a computer graphics display system |
Nov. 23, 1993 |
| 5261041 |
Computer controlled animation system based on definitional animated objects and methods of manipulating same |
Nov. 9, 1993 |
| 5253335 |
Hidden-surface processing device, anti-aliasing method and three-dimensional graphics processing apparatus |
Oct. 12, 1993 |
| 5249264 |
Image display method and apparatus |
Sep. 28, 1993 |
| 5245700 |
Adjustment of Z-buffer values for lines on the surface of a polygon |
Sep. 14, 1993 |
| 5220646 |
Single pass hidden line removal using Z-buffers |
Jun. 15, 1993 |
| 5175805 |
Method and apparatus for sequencing composite operations of pixels |
Dec. 29, 1992 |
| 5173947 |
Conformal image processing apparatus and method |
Dec. 22, 1992 |
| 5159663 |
Imager and process |
Oct. 27, 1992 |
| 5144291 |
Means for eliminating hidden surface |
Sep. 1, 1992 |
| 5123085 |
Method and apparatus for rendering anti-aliased polygons |
Jun. 16, 1992 |
| 5101365 |
Apparatus for extending windows using Z buffer memory |
Mar. 31, 1992 |
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