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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
6084601 Corner buffer system for improved memory read efficiency during texture mapping Jul. 4, 2000
6078336 Graphics memory system that utilizes look-ahead paging for reducing paging overhead Jun. 20, 2000
6078305 Device and method displaying a mesh effect with line buffer Jun. 20, 2000
6067098 Video/graphics controller which performs pointer-based display list video refresh operation May. 23, 2000
6064803 Image information decoder with a reduced capacity frame memory May. 16, 2000
6044419 Memory handling system that backfills dual-port buffer from overflow buffer when dual-port buffer is no longer full Mar. 28, 2000
6040844 Apparatus and method for storing and accessing picture generation data Mar. 21, 2000
6037925 Video signal converting apparatus and a display device having the same Mar. 14, 2000
6025853 Integrated graphics subsystem with message-passing architecture Feb. 15, 2000
6023281 Method and apparatus for memory allocation Feb. 8, 2000
6018354 Method for accessing banks of DRAM Jan. 25, 2000
6014126 Electronic equipment and liquid crystal display Jan. 11, 2000
6011565 Non-stalled requesting texture cache Jan. 4, 2000
6005591 Method and apparatus for increasing video data bandwidth by comparing video data for redundancy Dec. 21, 1999
6005572 Display unit having plurality of frame buffers Dec. 21, 1999
6005546 Hardware assist for YUV data format conversion to software MPEG decoder Dec. 21, 1999
6005592 Image processing apparatus having improved memory access for high speed 3-dimensional image processing Dec. 21, 1999
5999199 Non-sequential fetch and store of XY pixel data in a graphics processor Dec. 7, 1999
5999198 Graphics address remapping table entry feature flags for customizing the operation of memory pages associated with an accelerated graphics port device Dec. 7, 1999
5990912 Virtual address access to tiled surfaces Nov. 23, 1999
5990913 Method and apparatus for implementing a flush command for an accelerated graphics port device Nov. 23, 1999
5990914 Generating an error signal when accessing an invalid memory page Nov. 23, 1999
5986676 Device for protecting selected information in multi-media workstations Nov. 16, 1999
5986677 Accelerated graphics port read transaction merging Nov. 16, 1999
5982397 Video graphics controller having locked and unlocked modes of operation Nov. 9, 1999
5982398 Image processing device Nov. 9, 1999
5983315 System and method for establishing priorities in transferring data in burst counts from a memory to a plurality of FIFO stages, each having a low, intermediate, and high region Nov. 9, 1999
5977996 Storage device for storing hierarchically coded data and access method thereof Nov. 2, 1999
5977995 Computer system for displaying video and graphical data Nov. 2, 1999
5973706 Video multiplexing system for superimposition of scalable video data streams upon a background video data stream Oct. 26, 1999
5959637 Method and apparatus for executing a raster operation in a graphics controller circuit Sep. 28, 1999
5959596 Airline-based video game and communications system Sep. 28, 1999
5949437 Dual video output board with a shared memory interface Sep. 7, 1999
5936640 Accelerated graphics port memory mapped status and control registers Aug. 10, 1999
5937204 Dual-pipeline architecture for enhancing the performance of graphics memory Aug. 10, 1999
5929870 Video multiplexing system for superimposition of scalable video data streams upon a background video data stream Jul. 27, 1999
5929871 Access control apparatus and image processing system Jul. 27, 1999
5929868 Method and apparatus for computer display memory management Jul. 27, 1999
5923340 Process of processing graphics data Jul. 13, 1999
5917496 Special purpose memory for graphics and display apparatus using the same Jun. 29, 1999
5917506 Fast data alignment display queue structure for image block transfer Jun. 29, 1999
5914727 Valid flag for disabling allocation of accelerated graphics port memory space Jun. 22, 1999
5914730 System and method for invalidating and updating individual GART table entries for accelerated graphics port transaction requests Jun. 22, 1999
5912676 MPEG decoder frame memory interface which is reconfigurable for different frame store architectures Jun. 15, 1999
5910795 Digital image signal processing Jun. 8, 1999
5910807 Method of drawing figure such as polygon and display control device Jun. 8, 1999
5910794 Method and apparatus for storing and rotating bit patterns Jun. 8, 1999
5909224 Apparatus and method for managing a frame buffer for MPEG video decoding in a PC environment Jun. 1, 1999
5900857 Method of driving a liquid crystal display device and a driving circuit for the liquid crystal display device May. 4, 1999
5900887 Multiplexed wide interface to SGRAM on a graphics controller for complex-pattern fills without color and mask registers May. 4, 1999

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