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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 |
| 5081698 |
Method and apparatus for graphics display data manipulation |
Jan. 14, 1992 |
| 5043921 |
High speed Z-buffer control |
Aug. 27, 1991 |
| 5043922 |
Graphics system shadow generation using a depth buffer |
Aug. 27, 1991 |
| 5038297 |
Method and apparatus for clearing a region of Z-buffer |
Aug. 6, 1991 |
| 5027292 |
Multiple depth buffers for graphics and solid modelling |
Jun. 25, 1991 |
| 5008838 |
Method for simultaneous initialization of a double buffer and a frame buffer |
Apr. 16, 1991 |
| 5005117 |
Three-dimensional computer graphics apparatus with two-port memory for storing depth information |
Apr. 2, 1991 |
| 5001470 |
Three-dimensional display apparatus |
Mar. 19, 1991 |
| 4992780 |
Method and apparatus for storing a two-dimensional image representing a three-dimensional scene |
Feb. 12, 1991 |
| 4985854 |
Method for rapid generation of photo-realistic imagery |
Jan. 15, 1991 |
| 4970499 |
Apparatus and method for performing depth buffering in a three dimensional display |
Nov. 13, 1990 |
| 4970636 |
Memory interface controller |
Nov. 13, 1990 |
| 4961153 |
Graphics frame buffer with strip Z buffering and programmable Z buffer location |
Oct. 2, 1990 |
| 4958147 |
Graphic display processing system and displayed pattern picking method used in the same |
Sep. 18, 1990 |
| 4953107 |
Video signal processing |
Aug. 28, 1990 |
| 4951232 |
Method for updating pipelined, single port Z-buffer by segments on a scan line |
Aug. 21, 1990 |
| 4945500 |
Triangle processor for 3-D graphics display system |
Jul. 31, 1990 |
| 4943938 |
System for displaying shaded image of three-dimensional object |
Jul. 24, 1990 |
| 4924414 |
Apparatus and method for obtaining priority numbers for drawing figures forming a display figure |
May. 8, 1990 |
| 4924415 |
Apparatus for modifying data stored in a random access memory |
May. 8, 1990 |
| 4907174 |
Z-buffer allocated for window identification |
Mar. 6, 1990 |
| 4885703 |
3-D graphics display system using triangle processor pipeline |
Dec. 5, 1989 |
| 4855938 |
Hidden line removal method with modified depth buffer |
Aug. 8, 1989 |
| 4748572 |
Video processor architecture with distance sorting capability |
May. 31, 1988 |
| 4730261 |
Solids modelling generator |
Mar. 8, 1988 |
| 4697178 |
Computer graphics system for real-time calculation and display of the perspective view of three-dimensional scenes |
Sep. 29, 1987 |
| 4679041 |
High speed Z-buffer with dynamic random access memory |
Jul. 7, 1987 |
| 4658247 |
Pipelined, line buffered real-time color graphics display system |
Apr. 14, 1987 |
| 4625289 |
Computer graphics system of general surface rendering by exhaustive sampling |
Nov. 25, 1986 |
| 4486844 |
Dual axis inclination measuring apparatus and method |
Dec. 4, 1984 |
| 4475104 |
Three-dimensional display system |
Oct. 2, 1984 |
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