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Glen G. Langdon Jr.
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San Jose, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Approximated multi-symbol arithmetic coding method and apparatus
Patent number
5,774,081
Issue date
Jun 30, 1998
International Business Machines Corporation
Joe-Ming Cheng
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Order-preserving, fast-decoding arithmetic coding arithmetic coding...
Patent number
5,546,080
Issue date
Aug 13, 1996
International Business Machines Corporation
Glen G. Langdon
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Sort order preserving method for data storage compression
Patent number
5,270,712
Issue date
Dec 14, 1993
International Business Machines Corporation
Balakrishna R. Iyer
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Data compression for recording on a record medium
Patent number
5,097,261
Issue date
Mar 17, 1992
International Business Machines Corporation
Glen G. Langdon
G11 - INFORMATION STORAGE
Information
Patent Grant
Arithmetic coding encoder and decoder system
Patent number
4,905,297
Issue date
Feb 27, 1990
International Business Machines Corporation
Glen G. Langdon
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Compression of multilevel signals
Patent number
4,749,983
Issue date
Jun 7, 1988
International Business Machines Corporation
Glen G. Langdon
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Direction-constrained ternary codes using peak and polarity detection
Patent number
4,566,044
Issue date
Jan 21, 1986
International Business Machines Corporation
Glen G. Langdon
G11 - INFORMATION STORAGE
Information
Patent Grant
Adaptive source modeling for data file compression within bounded m...
Patent number
4,494,108
Issue date
Jan 15, 1985
International Business Machines Corporation
Glen G. Langdon
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High-speed arithmetic compression coding using concurrent value upd...
Patent number
4,467,317
Issue date
Aug 21, 1984
International Business Machines Corporation
Glen G. Langdon
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Method and means for carry-over control in the high order to low or...
Patent number
4,463,342
Issue date
Jul 31, 1984
International Business Machines Corporation
Glen G. Langdon
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and means for pipeline decoding of the high to low order pai...
Patent number
4,295,125
Issue date
Oct 13, 1981
International Business Machines Corporation
Glen G. Langdon
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Method and means for arithmetic coding utilizing a reduced number o...
Patent number
4,286,256
Issue date
Aug 25, 1981
International Business Machines Corporation
Glen G. Langdon
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Method and means for texture display in raster scanned color graphic
Patent number
4,225,861
Issue date
Sep 30, 1980
International Business Machines Corporation
Glen G. Langdon
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and means for minimizing error between the manual digitizing...
Patent number
4,181,952
Issue date
Jan 1, 1980
International Business Machines Corporation
Richard G. Casey
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Multi-color video display systems using more than one signal source
Patent number
4,149,184
Issue date
Apr 10, 1979
International Business Machines Corporation
Gary M. Giddings
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Method and means for tracking digit significance in arithmetic oper...
Patent number
4,110,831
Issue date
Aug 29, 1978
International Business Machines Corporation
Glen G. Langdon
G06 - COMPUTING CALCULATING COUNTING