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, CA12

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schlapp, Elizabeth J San Jose, CA 4 31

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MITSUBISHI DENKI KABUSHIKI KAISHA (12)
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4,953,164 Cache memory system having error correcting circuit 23 1988
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5,111,386 Cache contained type semiconductor memory device and operating method therefor 119 1990
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5,226,147 Semiconductor memory device for simple cache system 80 1990
5,226,139 Semiconductor memory device with a built-in cache memory and operating method thereof 41 1991
5,226,009 Semiconductor memory device supporting cache and method of driving the same 110 1991
5,767,865 Semiconductor integrated circuit device allowing fast rewriting of image data and image data processing system using the same 40 1995
5,953,257 Semiconductor memory device accessible at high speed 8 1997
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (8)
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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 94 1984
4,649,516 Dynamic row buffer circuit for DRAM 64 1984
4,725,945 Distributed cache in dynamic rams 109 1984
6,128,025 Embedded frame buffer system and synchronization method 28 1999
 
TEXAS INSTRUMENTS INCORPORATED (5)
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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 50 1991
6,118,500 DRAM bit-plane buffer for digital display system 14 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 88 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 93 1995
 
EVANS & SUTHERLAND COMPUTER CORPORATION (3)
5,408,606 Computer graphics system with parallel processing using a switch structure 56 1993
5,574,847 Computer graphics parallel system with temporal priority 40 1993
5,490,238 Attribute blending system for composing computer-graphic images from objects 19 1994
 
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 45 1994
5,673,422 Semiconductor integrated circuit for processing image data 33 1995
 
ROCKWELL COLLINS SIMULATION AND TRAINING SOLUTIONS LLC (3)
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5,579,456 Direct rendering of textured height fields 79 1995
5,699,497 Rendering global macro texture, for producing a dynamic image, as on computer generated terrain, seen from a moving viewpoint 65 1996
 
SUN MICROSYSTEMS, INC. (3)
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5,544,306 Flexible dram access in a frame buffer memory and system 133 1994
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Honeywell Information Systems Inc. (2)
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NEC CORPORATION (2)
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Amdahl Corporation (1)
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CIRRUS LOGIC, INC. (1)
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FUJITSU MICROELECTRONICS LIMITED (1)
5,014,240 Semiconductor memory device 22 1990
 
GLOBALFOUNDRIES INC. (1)
5,835,082 Video refresh compression 24 1997
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
4,860,244 Buffer system for input/output portion of digital data processing system 60 1983
 
HTC CORPORATION (1)
5,629,720 Display mode processor 21 1995
 
Inmos Corporation (1)
4,355,377 Asynchronously equillibrated and pre-charged static ram 78 1980
 
INTEL CORPORATION (1)
5,802,336 Microprocessor capable of unpacking packed data 73 1997
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
4,894,770 Set associative memory 55 1987
 
MOSAID TECHNOLOGIES INCORPORATED (1)
5,694,143 Single chip frame buffer and graphics accelerator 165 1994
 
Sperry Corporation (1)
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Tokyo Shibaura Denki Kabushiki Kaisha (1)
4,495,575 Information processing apparatus for virtual storage control system 25 1982

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SUN MICROSYSTEMS, INC. (4)
6,720,969 Dirty tag bits for 3D-RAM SRAM 15 2001
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 7 2002
7,027,064 Active block write-back from SRAM cache to DRAM 5 2002
 
CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC. (2)
8,037,235 Device and method for transferring data to a non-volatile memory device 0 2008
8,194,481 Semiconductor device with main memory unit and auxiliary memory unit requiring preset operation 1 2009
 
INTEGRATED DEVICE TECHNOLOGY, INC. (1)
7,042,792 Multi-port memory cells for use in FIFO applications that support data transfers between cache and supplemental memory arrays 7 2004
 
KABUSHIKI KAISHA TOSHIBA (1)
7,817,153 Graphic rendering apparatus which parallel-processes pixels at a time 0 2006
 
QUALCOMM INCORPORATED (1)
8,203,564 Efficient 2-D and 3-D graphics processing 0 2007
 
RENESAS TECHNOLOGY CORP. (1)
6,753,872 Rendering processing apparatus requiring less storage capacity for memory and method therefor 10 2001

Maintenance Fees

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 18, 2014
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00

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