US Patent No: 6,535,218

Number of patents in Portfolio can not be more than 2000

Frame buffer memory for graphic processing

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Abstract

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A frame buffer memory is disclosed which provides accelerated rendering of two-dimensional and three-dimensional images in a computer graphics system. One embodiment of the disclosed memory comprises a memory array, a pixel buffer, a plurality of pixel arithmetic-logic units, an input data formatter, an output data formatter, a read data formatter, a write data formatter and an address and control input bus.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MITSUBISHI ELECTRIC & ELECTRONICS USA, INC.SAN JOSE, CA3

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schlapp, Elizabeth J San Jose, CA 4 33

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CIRRUS LOGIC, INC. (1)
* 5,506,604 Apparatus, systems and methods for processing video data in conjunction with a multi-format frame buffer 82 1994
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (8)
4,493,026 Set associative sector cache 78 1982
4,489,381 Hierarchical memories having two ports at each subordinate memory level 37 1982
4,616,310 Communicating random access memory 33 1983
4,644,503 Computer memory system with integrated parallel shift circuits 21 1983
4,577,293 Distributed, on-chip cache 102 1984
4,649,516 Dynamic row buffer circuit for DRAM 64 1984
4,725,945 Distributed cache in dynamic rams 112 1984
* 6,128,025 Embedded frame buffer system and synchronization method 32 1999
 
ADVANCED MICRO DEVICES, INC. (2)
4,542,454 Apparatus for controlling access to a memory 39 1983
4,797,850 Dynamic random access memory controller with multiple independent control channels 61 1986
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
4,860,244 Buffer system for input/output portion of digital data processing system 60 1983
 
Tokyo Shibaura Denki Kabushiki Kaisha (1)
4,495,575 Information processing apparatus for virtual storage control system 25 1982
 
MOSAID TECHNOLOGIES INCORPORATED (1)
* 5,694,143 Single chip frame buffer and graphics accelerator 176 1994
 
Sperry Corporation (1)
4,381,541 Buffer memory referencing system for two data words 35 1980
 
FREESCALE SEMICONDUCTOR, INC. (1)
* 4,831,287 Latching sense amplifier 46 1988
 
GLOBALFOUNDRIES INC. (1)
* 5,835,082 Video refresh compression 24 1997
 
SUN MICROSYSTEMS, INC. (2)
4,803,621 Memory access system 110 1986
* 5,544,306 Flexible dram access in a frame buffer memory and system 141 1994
 
Inmos Corporation (1)
4,355,377 Asynchronously equillibrated and pre-charged static ram 80 1980
 
ORACLE AMERICA, INC. (1)
* 5,579,473 Interface controller for frame buffer random access memory devices 78 1994
 
Honeywell Information Systems Inc. (1)
4,376,972 Sequential word aligned address apparatus 12 1980
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
4,894,770 Set associative memory 56 1987
 
NEC CORPORATION (2)
4,672,614 Semiconductor memory device with parallel addressing and data-correcting functions 22 1984
4,755,974 Content-addressable memory 25 1985
 
EVANS & SUTHERLAND COMPUTER CORPORATION (3)
5,408,606 Computer graphics system with parallel processing using a switch structure 60 1993
5,574,847 Computer graphics parallel system with temporal priority 43 1993
5,490,238 Attribute blending system for composing computer-graphic images from objects 19 1994
 
INTEL CORPORATION (1)
* 5,802,336 Microprocessor capable of unpacking packed data 95 1997
 
HTC CORPORATION (1)
* 5,629,720 Display mode processor 21 1995
 
FUJITSU MICROELECTRONICS LIMITED (1)
5,014,240 Semiconductor memory device 22 1990
 
RENESAS ELECTRONICS CORPORATION (3)
5,588,130 Semiconductor memory device for simple cache system 41 1994
* 5,838,337 Graphic system including a plurality of one chip semiconductor integrated circuit devices for displaying pixel data on a graphic display 46 1994
* 5,673,422 Semiconductor integrated circuit for processing image data 35 1995
 
ROCKWELL COLLINS SIMULATION AND TRAINING SOLUTIONS LLC (3)
5,561,745 Computer graphics for animation by time-sequenced textures 52 1992
5,579,456 Direct rendering of textured height fields 80 1995
5,699,497 Rendering global macro texture, for producing a dynamic image, as on computer generated terrain, seen from a moving viewpoint 78 1996
 
Texas Instruments Incorporated (5)
4,382,278 Hierarchial memory system with microcommand memory and pointer register mapping virtual CPU registers in workspace cache #4 and main memory cache 27 1980
4,636,987 Semiconductor dynamic memory device with multiplexed sense amplifier and write-activated active loads 28 1984
5,184,320 Cached random access memory device and system 90 1990
5,214,610 Memory with selective address transition detection for cache operation 57 1991
* 6,118,500 DRAM bit-plane buffer for digital display system 14 1997
 
MITSUBISHI DENKI KABUSHIKI KAISHA (12)
4,825,411 Dual-port memory with asynchronous control of serial data memory transfer 103 1987
4,926,385 Semiconductor memory device with cache memory addressable by block within each column 76 1988
4,953,164 Cache memory system having error correcting circuit 26 1988
4,991,136 Semiconductor associative memory device with memory refresh during match and read operations 28 1989
5,142,671 Plural cache architecture for real time multitasking 11 1989
5,111,386 Cache contained type semiconductor memory device and operating method therefor 127 1990
5,179,687 Semiconductor memory device containing a cache and an operation method thereof 110 1990
5,226,147 Semiconductor memory device for simple cache system 83 1990
5,226,139 Semiconductor memory device with a built-in cache memory and operating method thereof 42 1991
5,226,009 Semiconductor memory device supporting cache and method of driving the same 111 1991
* 5,767,865 Semiconductor integrated circuit device allowing fast rewriting of image data and image data processing system using the same 41 1995
* 5,953,257 Semiconductor memory device accessible at high speed 9 1997
 
NVIDIA CORPORATION (4)
5,381,519 System for line interpolation for computer graphics displays 24 1992
5,361,386 System for polygon interpolation using instantaneous values in a variable 91 1993
5,598,517 Computer graphics pixel rendering system with multi-level scanning 51 1995
5,651,104 Computer graphics system and process for adaptive supersampling 94 1995
 
Amdahl Corporation (1)
4,631,660 Addressing system for an associative cache memory 28 1983
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ATI TECHNOLOGIES INC. (1)
* 2006/0267,989 Dynamic load balancing in multiple video processing unit (VPU) systems 11 2005
 
QUALCOMM INCORPORATED (2)
* 8,203,564 Efficient 2-D and 3-D graphics processing 7 2007
* 2008/0198,168 EFFICIENT 2-D AND 3-D GRAPHICS PROCESSING 29 2007
 
RENESAS TECHNOLOGY CORP. (1)
* 6,753,872 Rendering processing apparatus requiring less storage capacity for memory and method therefor 11 2001
 
INTEGRATED DEVICE TECHNOLOGY, INC. (2)
* 7,042,792 Multi-port memory cells for use in FIFO applications that support data transfers between cache and supplemental memory arrays 7 2004
* 2005/0152,204 Multi-port memory cells for use in FIFO applications that support data transfers between cache and supplemental memory arrays 0 2004
 
INTEL CORPORATION (3)
* 2005/0044,261 Method of operating a network switch 6 2003
* 9,251,731 Multi-sampling anti-aliasing compression by use of unreachable bit combinations 0 2013
* 2014/0333,662 MULTI-SAMPLING ANTI-ALIASING COMPRESSION BY USE OF UNREACHABLE BIT COMBINATIONS 5 2013
 
KABUSHIKI KAISHA TOSHIBA (1)
7,817,153 Graphic rendering apparatus which parallel-processes pixels at a time 1 2006
 
NOVACHIPS CANADA INC. (4)
8,037,235 Device and method for transferring data to a non-volatile memory device 0 2008
* 2010/0161,877 DEVICE AND METHOD FOR TRANSFERRING DATA TO A NON-VOLATILE MEMORY DEVICE 5 2008
8,194,481 Semiconductor device with main memory unit and auxiliary memory unit requiring preset operation 1 2009
* 2010/0157,715 SEMICONDUCTOR DEVICE WITH MAIN MEMORY UNIT AND AUXILIARY MEMORY UNIT REQUIRING PRESET OPERATION 4 2009
 
SUN MICROSYSTEMS, INC. (1)
6,720,969 Dirty tag bits for 3D-RAM SRAM 15 2001
 
AUTODESK, INC. (1)
* 2006/0262,119 Transfer of motion between animated characters 5 2005
 
ORACLE AMERICA, INC. (5)
6,778,179 External dirty tag bits for 3D-RAM SRAM 12 2001
* 6,753,870 Graphics system configured to switch between multiple sample buffer contexts 11 2002
* 2003/0142,099 Graphics system configured to switch between multiple sample buffer contexts 4 2002
* 7,027,064 Active block write-back from SRAM cache to DRAM 6 2002
* 2003/0160,796 Active block write-back from SRAM cache to DRAM 2 2002
* Cited By Examiner