US Patent No: 5,159,449

Number of patents in Portfolio can not be more than 2000

Method and apparatus for data reduction in a video image data reduction system

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Abstract

Reducing the amount of data required to describe a greyscale image is achieved by determining the modal greyscale and giving all pixels within a tolerance level of, for example, .+-.2 greyscale levels of the modal greyscale, a logic value of 0. This leads to significant data reduction since proportionally very many pixels are effected. The contrast extremes of the image are unaffected however so that the image remains reasonably comprehensible.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
WORKSTATION TECHNOLOGIES, INC.IRVINE, CA2

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allmendinger, Klaus K San Juan Capistrano, CA 10 81

Cited Art

Patent Info (Count) # Cites Year
 
EASTMAN KODAK COMPANY (1)
4,774,574 Adaptive block transform image coding method and apparatus 96 1987
 
LUCENT TECHNOLOGIES INC. (1)
4,414,580 Progressive transmission of two-tone facsimile 26 1981
 
NIPPON ELECTRIC CO., LTD. (1)
4,517,596 System comprising a preliminary processing device controlled in accordance with an amount of information stored in a buffer 38 1982

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
COASES INVESTMENTS BROS. L.L.C. (33)
6,047,112 Technique for initiating processing of a data stream of encoded video information 11 1995
5,768,561 Tokens-based adaptive video processing arrangement 45 1995
5,625,571 Prediction filter 5 1995
6,435,737 Data pipeline system and data encoding method 22 1995
6,263,422 Pipeline processing machine with interactive stages operable in response to tokens and system and methods relating thereto 20 1995
6,035,126 Data pipeline system and data encoding method 8 1995
6,018,354 Method for accessing banks of DRAM 14 1995
5,878,273 System for microprogrammable state machine in video parser disabling portion of processing stages responsive to sequence.sub.-- end token generating by token generator responsive to received data 6 1995
5,689,313 Buffer management in an image formatter 15 1995
5,784,631 Huffman decoder 33 1995
6,326,999 Data rate conversion 5 1995
5,907,692 Data pipeline system and data encoding method 11 1997
5,724,537 Interface for connecting a bus to a random access memory using a two wire link 20 1997
5,956,519 Picture end token in a system comprising a plurality of pipeline stages 59 1997
6,038,380 Data pipeline system and data encoding method 12 1997
6,079,009 Coding standard token in a system compromising a plurality of pipeline stages 17 1997
5,809,270 Inverse quantizer 11 1997
5,881,301 Inverse modeller 10 1997
6,067,417 Picture start token 11 1997
5,978,592 Video decompression and decoding system utilizing control and data tokens 8 1997
5,956,741 Interface for connecting a bus to a random access memory using a swing buffer and a buffer manager 27 1997
6,018,776 System for microprogrammable state machine in video parser clearing and resetting processing stages responsive to flush token generating by token generator responsive to received data 10 1997
6,112,017 Pipeline processing machine having a plurality of reconfigurable processing stages interconnected by a two-wire interface bus 18 1997
6,122,726 Data pipeline system and data encoding method 5 1997
6,330,665 Video parser 15 1997
7,095,783 Multistandard video decoder and decompression system for processing encoded bit streams including start codes and methods relating thereto 18 2000
7,711,938 Multistandard video decoder and decompression system for processing encoded bit streams including start code detection and methods relating thereto 11 2001
7,149,811 Multistandard video decoder and decompression system for processing encoded bit streams including a reconfigurable processing stage and methods relating thereto 17 2001
6,892,296 Multistandard video decoder and decompression system for processing encoded bit streams including a standard-independent stage and methods relating thereto 4 2001
6,950,930 Multistandard video decoder and decompression system for processing encoded bit streams including pipeline processing and methods relating thereto 3 2001
6,910,125 Multistandard video decoder and decompression system for processing encoded bit streams including a decoder with token generator and methods relating thereto 5 2001
6,697,930 Multistandard video decoder and decompression method for processing encoded bit streams according to respective different standards 6 2001
7,230,986 Multistandard video decoder and decompression system for processing encoded bit streams including a video formatter and methods relating thereto 11 2001
 
TALON RESEARCH, LLC (17)
5,603,012 Start code detector 41 1995
6,217,234 Apparatus and method for processing data with an arithmetic unit 24 1995
5,984,512 Method for storing video information 19 1995
5,835,792 Token-based adaptive video processing arrangement 35 1995
5,828,907 Token-based adaptive video processing arrangement 28 1995
5,829,007 Technique for implementing a swing buffer in a memory array 16 1995
5,821,885 Video decompression 11 1995
5,801,973 Video decompression 3 1995
5,798,719 Parallel Huffman decoder 16 1995
5,768,629 Token-based adaptive video processing arrangement 69 1995
5,761,741 Technique for addressing a partial word and concurrently providing a substitution field 27 1995
5,740,460 Arrangement for processing packetized data 4 1995
5,699,544 Method and apparatus for using a fixed width word for addressing variable width data 4 1995
5,703,793 Video decompression 45 1995
6,330,666 Multistandard video decoder and decompression system for processing encoded bit streams including start codes and methods relating thereto 65 1997
5,995,727 Video decompression 7 1997
6,799,246 Memory interface for reading/writing data from/to a memory 145 1997
 
DISCOVISION ASSOCIATES (3)
5,861,894 Buffer manager 6 1995
5,835,740 Data pipeline system and data encoding method 9 1995
5,805,914 Data pipeline system and data encoding method 26 1995
 
LENOVO (SINGAPORE) PTE LTD. (2)
5,465,118 Luminance transition coding method for software motion video compression/decompression 57 1993
5,528,514 Luminance transition coding method for software motion video compression/decompression 3 1995
 
CANON INC. (1)
5,757,516 Noise quenching method and apparatus for a colour display system 2 1994
 
INTEL CORPORATION (1)
7,012,576 Intelligent display interface 0 1999
 
LOCKHEED MARTIN CORPORATION (1)
7,619,541 Remote sensor processing system and method 0 2005
 
SHARP KABUSHIKI KAISHA (1)
7,224,832 Image coding device, and image decoding device using irreversable coding without mask image 2 2003
 
UNI-PIXEL DISPLAYS, INC. (1)
7,564,874 Enhanced bandwidth data encoding method 1 2005
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
5,327,254 Method and apparatus for compressing and decompressing image data 25 1992