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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 |
| 5870097 |
Method and system for improving shadowing in a graphics rendering system |
Feb. 9, 1999 |
| 5870095 |
Z buffer initialize and update method for pixel block |
Feb. 9, 1999 |
| 5856829 |
Inverse Z-buffer and video display system having list-based control mechanism for time-deferred instructing of 3D rendering engine that also responds to supervisory immediate commands |
Jan. 5, 1999 |
| 5854631 |
System and method for merging pixel fragments based on depth range values |
Dec. 29, 1998 |
| 5850224 |
Three dimensional parallel drawing apparatus for synthesizing graphics data with image data using a pixel depth buffer and an image depth register |
Dec. 15, 1998 |
| 5844571 |
Z buffer bandwidth reductions via split transactions |
Dec. 1, 1998 |
| 5841439 |
Updating graphical objects based on object validity periods |
Nov. 24, 1998 |
| 5838329 |
Fast perspective texture mapping for 3-D computer graphics |
Nov. 17, 1998 |
| 5828378 |
Three dimensional graphics processing apparatus processing ordinary and special objects |
Oct. 27, 1998 |
| 5825363 |
Method and apparatus for determining visible surfaces |
Oct. 20, 1998 |
| 5819017 |
Apparatus and method for selectively storing depth information of a 3-D image |
Oct. 6, 1998 |
| 5812138 |
Method and apparatus for dynamic object indentification after Z-collision |
Sep. 22, 1998 |
| 5808617 |
Method and system for depth complexity reduction in a graphics rendering system |
Sep. 15, 1998 |
| 5808618 |
Three-dimensional displaying apparatus having frame buffer and depth buffer |
Sep. 15, 1998 |
| 5805135 |
Apparatus and method for producing picture data based on two-dimensional and three dimensional picture data producing instructions |
Sep. 8, 1998 |
| 5801717 |
Method and system in display device interface for managing surface memory |
Sep. 1, 1998 |
| 5784064 |
Image processing |
Jul. 21, 1998 |
| 5771167 |
Synchronous control method and apparatus therefor |
Jun. 23, 1998 |
| 5767856 |
Pixel engine pipeline for a 3D graphics accelerator |
Jun. 16, 1998 |
| 5760780 |
Computer graphics system using caching of pixel Z values to improve rendering performance |
Jun. 2, 1998 |
| 5761400 |
Method and system for increasing the speed of a Z-buffer process |
Jun. 2, 1998 |
| 5758045 |
Signal processing method and apparatus for interactive graphics system for contemporaneous interaction between the raster engine and the frame buffer |
May. 26, 1998 |
| 5751291 |
System and method for accelerated occlusion culling |
May. 12, 1998 |
| 5751290 |
Three dimensional graphics system and method with correction to z buffer value errors |
May. 12, 1998 |
| 5748864 |
Video buffer recycling method and apparatus |
May. 5, 1998 |
| 5748863 |
Method and system for fast interpolation of depth buffer values in a computer graphics display system |
May. 5, 1998 |
| 5734806 |
Method and apparatus for determining graphical object visibility |
Mar. 31, 1998 |
| 5729669 |
Method and apparatus for displaying movies using Z-data information |
Mar. 17, 1998 |
| 5724560 |
Display graphics adapter for processing different pixel sizes in a windowing system |
Mar. 3, 1998 |
| 5719593 |
Single frame buffer image processing system |
Feb. 17, 1998 |
| 5706479 |
Method and apparatus for dynamically detecting overflow of a multi-layer buffer |
Jan. 6, 1998 |
| 5684942 |
Image processing apparatus and method for generating a third image from first and second images |
Nov. 4, 1997 |
| 5664078 |
Sorting apparatus and method for sorting data in sequence of reference levels indicated by the data |
Sep. 2, 1997 |
| 5649078 |
Efficient two-pass rasterization scheme utilizing visibility information |
Jul. 15, 1997 |
| 5634850 |
Image processing device and method |
Jun. 3, 1997 |
| 5621866 |
Image processing apparatus having improved frame buffer with Z buffer and SAM port |
Apr. 15, 1997 |
| 5619627 |
Multiple-level occulting using a mask buffer |
Apr. 8, 1997 |
| 5613050 |
Method and apparatus for reducing illumination calculations through efficient visibility determination |
Mar. 18, 1997 |
| 5600763 |
Error-bounded antialiased rendering of complex scenes |
Feb. 4, 1997 |
| 5598515 |
System and method for reconstructing surface elements of solid objects in a three-dimensional scene from a plurality of two dimensional images of the scene |
Jan. 28, 1997 |
| 5596686 |
Method and apparatus for simultaneous parallel query graphics rendering Z-coordinate buffer |
Jan. 21, 1997 |
| 5590249 |
Three dimensional sprite rendering apparatus and method |
Dec. 31, 1996 |
| 5583974 |
Computer graphics system having high performance multiple layer Z-buffer |
Dec. 10, 1996 |
| 5579455 |
Rendering of 3D scenes on a display using hierarchical z-buffer visibility |
Nov. 26, 1996 |
| 5561750 |
Z-buffer tag memory organization |
Oct. 1, 1996 |
| 5557711 |
Apparatus and method for volume rendering |
Sep. 17, 1996 |
| 5551019 |
Methods and systems for sorting multiplying indexed data |
Aug. 27, 1996 |
| 5546530 |
Method and apparatus for rendering graphical images using parallel processing |
Aug. 13, 1996 |
| 5542025 |
Precision Z-interpolation method and apparatus |
Jul. 30, 1996 |
| 5537520 |
Method and system for displaying a three dimensional object |
Jul. 16, 1996 |
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