US Patent No: 5,353,403

Number of patents in Portfolio can not be more than 2000

Graphic display processing apparatus and method for improving the speed and efficiency of a window system

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Abstract

A graphic display processing apparatus which includes having a CPU, a VRAM and a display controller, a data operation unit, an access cycle generator, an address generator and a sequential transfer sequencer. The graphic display processing apparatus also includes a mask pattern generator, dot mask generator and data position transformer. In the graphic display processing apparatus block transfer and character drawing are performed at high speeds, thereby making a window system more practical and offering comfortable operational environment to the user.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HITACHI CHUBU SOFTWARE, LTD.TOKYO13
HITACHI, LTD.TOKYO32320
HITACHI SOFTWARE ENGINEERING CO., LTD.TOKYO254

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirata, Sunao Seto, JP 3 35
Kitahara, Jun Chiba, JP 60 875
Kohiyama, Tomohisa Yokohama, JP 34 563
Ote, Ichiro Chigasaki, JP 11 442
Oyama, Seiji Seto, JP 4 22
Soen, Takumi Kochi-Shi, JP 3 21

Cited Art

Patent Info (Count) # Cites Year
 
HITACHI, LTD. (1)
5,046,023 Graphic processing system having bus connection control capable of high-speed parallel drawing processing in a frame buffer and a system memory 74 1987
 
TECHNIC, INC. (1)
4,791,580 Display processor updating its color map memories from the serial output port of a video random-access memory 23 1986

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
FAUST COMMUNICATIONS, LLC (2)
RE41967 Single-block virtual frame buffer translated to multiple physical blocks for multi-block display refresh generator 0 2006
RE43235 Single-block virtual frame buffer translated to multiple physical blocks for multi-block display refresh generator 0 2010
 
HITACHI, LTD. (2)
5,801,706 Special purpose memory for graphics and display apparatus using the special purpose memory for graphics 46 1995
5,917,496 Special purpose memory for graphics and display apparatus using the same 50 1998
 
APPLE INC. (1)
6,373,493 Hardware graphics accelerator having access to multiple types of memory including cached memory 4 1995
 
CANON KABUSHIKI KAISHA (1)
7,747,077 Image processing apparatus, image processing method, and image processing program 2 2006
 
HIMAX TECHNOLOGIES LIMITED (1)
8,169,444 Bit block transfer circuit and method thereof and color filling method 0 2007
 
HITACHI SOFTWARE ENGINEERING CO., LTD. (1)
5,583,985 Graphic display processing apparatus for improving speed and efficiency of a window system 9 1994
 
NATIONAL SEMICONDUCTOR CORPORATION (1)
5,594,702 Multi-first-in-first-out memory circuit 29 1995
 
NUFLARE TECHNOLOGY, INC. (1)
8,076,656 Writing apparatus and writing data conversion method 1 2008
 
S3 GRAPHICS CO., LTD. (1)
5,668,941 Optimum implementation of X-Y clipping on pixel boundary 9 1995
 
SCIENTIFIC-ATLANTA, INC. (1)
5,903,281 List controlled video operations 51 1996