1
Cesar A Gonzales, Eric Viscito: Motion video compression system with adaptive bit allocation and quantization. International Business Machines Corporation, Thomas P Dowd, July 27, 1993: US05231484 (340 worldwide citation)

A system and method are disclosed for implementing an encoder suitable for use with the proposed ISO/IEC MPEG standards including three cooperating components or subsystems that operate to variously adaptively pre-process the incoming digital motion video sequences, allocate bits to the pictures in ...


2
Seraphin B Calo, Krishnamurthi Kannan, Suk S Soo, Thomas G Burket, John W Wiley Jr: Electronic system for accessing graphical and textual information. International Business Machines Corporation, Thomas P Dowd, Marc D Schechter, February 14, 1989: US04805134 (170 worldwide citation)

An architecture for the implementation of an information utility for accessing information and executing transactions on an interactive basis between Videotex databases and individual end user terminals, some or all of which may be remotely located with respect to each other. The utility may be asso ...


3
Victor S Miller, Mark N Wegman: Data compression method. International Business Machines Corporation, Thomas P Dowd, March 21, 1989: US04814746 (158 worldwide citation)

Communications between a Host Computing System and a number of remote terminals is enhanced by a data compression method which modifies the data compression method of Lempel and Ziv by addition of new character and new string extensions to improve the compression ratio, and deletion of a least recen ...


4
Michael Burstein, Se J Hong, Richard N Pelavin: Simultaneous placement and wiring for VLSI chips. International Business Machines Corporation, George E Clark, Jack M Arnold, Thomas P Dowd, June 3, 1986: US04593363 (142 worldwide citation)

For designing the layout of a master-slice VLSI chip steps for placing components and for determining the wiring pattern interconnecting them are alternated in an iterative process. The chip area is partitioned into subareas of decreasing size, the set of components is partitioned into subsets which ...


5
Cesar A Gonzales, Dov Ramm, Eric Viscito: Motion video compression system with multiresolution features. International Business Machines Corporation, Thomas P Dowd, Richard M Ludwin, May 9, 1995: US05414469 (136 worldwide citation)

A system and method for processing a stream of video image data so as to create a video representation that multiplexes data corresponding to resolution or bitstream scales. This representation is such that the identity of the basic MacroBlock (MB) structure of the MPEG-1 ISO standard is preserved a ...


6
Joan L Mitchell, William B Pennebaker, Jorma J Rissanen: Dynamic model selection during data compression. International Business Machines Corporation, Thomas P Dowd, September 3, 1991: US05045852 (132 worldwide citation)

A system and method for maximizing data compression by optimizing model selection during coding of an input stream of data symbols, wherein at least two models are run and compared, and the model with the best coding performance for a given-size segment or block of compressed data is selected such t ...


7
Yi Hsin Chen, Frederick C Mintzer, Keith S Pennington: System for reproducing mixed images. International Business Machines Corporation, Thomas P Dowd, May 26, 1987: US04668995 (116 worldwide citation)

An electronic processing system for reproducing mixed images, i.e., original images having areas of continuous tone and areas of text, in such a manner that both areas are of balanced, good quality in the reproduction. The image to be reproduced is (1) divided into non-overlapping 4.times.4 blocks o ...


8
Richard E Matick, Daniel T Ling: Distributed, on-chip cache. International Business Machines Corporation, George E Clark, Thomas P Dowd, March 18, 1986: US04577293 (96 worldwide citation)

The cache reload time in small computer systems is improved by using a distributed cache located on the memory chips. The large bandwidth between the main memory and cache is the usual on-chip interconnecting lines which avoids pin input/output problems. This distributed cache is achieved by the use ...


9
Joan L Mitchell, Karen L Anderson: Method for converting an image from a run end or run length representation to a bit map. International Business Machines Corporation, George E Clark, Thomas P Dowd, June 17, 1986: US04596039 (92 worldwide citation)

A method for converting an image from a run representation to a bit map, includes the steps of: storing a plurality of run representations of an image in a buffer; initializing a line of data; converting, by table lookup, each run representation, in said line, to a picture element representation, st ...


10
Joan L Mitchell, William B Pennebaker: Arithmetic coding data compression/de-compression by selectively employed, diverse arithmetic coding encoders and decoders. International Business Machines Corporation, Marc A Block, Thomas P Dowd, January 2, 1990: US04891643 (91 worldwide citation)

A data compression/de-compression system includes a first arithmetic coding encoder, characterized by a first set of encoding conventions, which encoder generates a code stream that points to an interval along a number line in response to decision event inputs. The code stream can be adjusted to poi ...