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Class Information
Number: 345/531
Name: Computer graphics processing, operator interface processing, and selective visual display systems > Computer graphics display memory system > Graphic display memory controller
Description: Subject matter including means for controlling the read/write operations of the graphics display memory.

Sub-classes under this class:

Class Number Class Name Patents
345/534 Memory access timing signals 204
345/535 Memory arbitration 180
345/532 Plural memory controllers 117
345/533 Using different access modes 111

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
5898442 Display control device Apr. 27, 1999
5880702 Display control apparatus and method Mar. 9, 1999
5877780 Semiconductor chip having multiple independent memory sections, at least one of which includes simultaneously accessible arrays Mar. 2, 1999
5877781 Memory control device for video editor Mar. 2, 1999
5877779 Method and apparatus for efficient rendering of three-dimensional scenes Mar. 2, 1999
5870109 Graphic system with read/write overlap detector Feb. 9, 1999
5859649 Data processing system having display controller with bursting direct memory access Jan. 12, 1999
5854637 Method and apparatus for managing access to a computer system memory shared by a graphics controller and a memory controller Dec. 29, 1998
5854639 Graphic display unit and graphic display method using the same Dec. 29, 1998
5850483 Image decompressing apparatus with efficient image data transfer Dec. 15, 1998
5844575 Video compression interface Dec. 1, 1998
5838334 Memory and graphics controller which performs pointer-based display list video refresh operations Nov. 17, 1998
5835103 Apparatus using memory control tables related to video graphics processing for TV receivers Nov. 10, 1998
5831640 Enhanced texture map data fetching circuit and method Nov. 3, 1998
5828384 Image display control device, method and computer program product Oct. 27, 1998
5818417 Automatic virtual display panning circuit for providing VGA display data to a lower resolution display and method therefor Oct. 6, 1998
5818434 Method and apparatus for controlling image display Oct. 6, 1998
5815167 Method and apparatus for providing concurrent access by a plurality of agents to a shared memory Sep. 29, 1998
5801706 Special purpose memory for graphics and display apparatus using the special purpose memory for graphics Sep. 1, 1998
5796413 Graphics controller utilizing video memory to provide macro command capability and enhanched command buffering Aug. 18, 1998
5794017 Method and system of updating graphics memory in a graphics display system through multiple address transferring of pixel data Aug. 11, 1998
5793996 Bridge for interconnecting a computer system bus, an expansion bus and a video frame buffer Aug. 11, 1998
5787240 Printer control apparatus converting video data from an external host to video data for a printer Jul. 28, 1998
5781201 Method for providing improved graphics performance through atypical pixel storage in video memory Jul. 14, 1998
5777632 Storage control system that prohibits writing in certain areas Jul. 7, 1998
5767863 Video processing technique using multi-buffer video memory Jun. 16, 1998
5767864 One chip semiconductor integrated circuit device for displaying pixel data on a graphic display Jun. 16, 1998
5760790 Display system Jun. 2, 1998
5754191 Method and apparatus for optimizing pixel data write operations to a tile based frame buffer May. 19, 1998
5754157 Method for forming column signals for a liquid crystal display apparatus May. 19, 1998
5752010 Dual-mode graphics controller with preemptive video access May. 12, 1998
5748946 Method and apparatus for improved graphics picking using auxiliary buffer information May. 5, 1998
5742298 64 bit wide video front cache Apr. 21, 1998
5737761 Memory control architecture for high-speed transfer operations Apr. 7, 1998
5731809 Adaptive display memory management system Mar. 24, 1998
5727192 Serial rendering system with auto-synchronization on frame blanking Mar. 10, 1998
5717874 Apparatus for data transfer between image memory and external I/O device wherein inner registers set the image valid area, direction and moder of transfer Feb. 10, 1998
5717436 Processing image signals with a single image support component Feb. 10, 1998
5706451 Displaying a subsampled video image on a computer display Jan. 6, 1998
5706481 Apparatus and method for integrating texture memory and interpolation logic in a computer system Jan. 6, 1998
5703616 Display driving device Dec. 30, 1997
5699085 Display device Dec. 16, 1997
5680161 Method and apparatus for high speed graphics data compression Oct. 21, 1997
5675363 Method and equipment for controlling display of image data according to random-scan system Oct. 7, 1997
5666521 Method and apparatus for performing bit block transfers in a computer system Sep. 9, 1997
5659715 Method and apparatus for allocating display memory and main memory employing access request arbitration and buffer control Aug. 19, 1997
5621881 DRAM control device of a CD graphics decoder Apr. 15, 1997
5608864 Variable pixel depth and format for video windows Mar. 4, 1997
5606657 Virtual graphics processor for embedded real time display systems Feb. 25, 1997
5606348 Programmable display interface device and method Feb. 25, 1997

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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