61
Cesar A Gonzales, Joan L Mitchell, William B Pennebaker: Adaptive graylevel image compression system. International Business Machines Corporation, Marc A Block, February 16, 1988: US04725885 (91 worldwide citation)

Apparatus and method for modelling differential pulse code modulation (DPCM) input data for entropy coding. In particular, the sign and magnitude of one piece of DPCM data after another are modelled to provide a magnitude state input and a sign state input to provide context for DPCM magnitude input ...


62
Shinichi Terashita: Method and device for measuring cell gap of liquid crystal display using near-IR radiation. Sharp Kabushiki Kaisha, Nixon & Vanderhye P C, October 21, 2003: US06636322 (91 worldwide citation)

A method and device for measuring cell gap of a liquid crystal display, the display comprising a pair of substrates with electrodes adhered together forming a predetermined sized cell gap. The device and method includes radiating near-infrared light toward the liquid crystal cell, reflectively inter ...


63
Anthony J Bell: Blind signal processing system employing information maximization to recover unknown signals through unsupervised minimization of output redundancy. The Salk Institute for Biological Studies, Baker Maxham Jester & Meador, January 6, 1998: US05706402 (91 worldwide citation)

A neural network system and unsupervised learning process for separating unknown source signals from their received mixtures by solving the Independent Components Analysis (ICA) problem. The unsupervised learning procedure solves the general blind signal processing problem by maximizing joint output ...


64
Raymond Lau, Ronald Rosenfeld, Salim Roukos: Building scalable n-gram language models using maximum likelihood maximum entropy n-gram models. International Business Machines Corporation, Robert Tasinari, Sterne Kessler Goldstein & Fox P L L C, June 17, 1997: US05640487 (90 worldwide citation)

The present invention is an n-gram language modeler which significantly reduces the memory storage requirement and convergence time for language modelling systems and methods. The present invention aligns each n-gram with one of "n" number of non-intersecting classes. A count is determined for each ...


65
Ahmad Zandi, David G Stork, James Allen: Compression of palettized images and binarization for bitwise coding of M-ary alphabets therefor. Ricoh Company, Ricoh Corporation, Philip H Albert, Townsend and Townsend and Crew, November 28, 1995: US05471207 (90 worldwide citation)

The invention provides an improved method and apparatus for compression of palettized images. Input symbols in an M-ary alphabet are binarized based on a context model of the input data, where the binarization is selected to provide good compression by a binary encoder. The particular binarization i ...


66
Azizul H Quazi: Method for detecting acoustic signals from an underwater source. The United States of America represented by the Secretary of the Navy, Michael J McGowan, Prithvi C Lall, Michael F Oglo, September 16, 1997: US05668778 (90 worldwide citation)

A method for detecting radiated and reflected acoustic signals from an unwater source, wherein the acoustic signals are present in a random noise environment and form an output therewith. The method includes the steps of operating an entropy-based acoustic receiver to receive the output, calculating ...


67
Navin Chaddha: Table-based compression with embedded coding. Microsoft Corporation, Lee & Hayes PLLC, March 19, 2002: US06360019 (89 worldwide citation)

An image compression system includes a vectorizer and a hierarchical vector quantization table that outputs embedded code. The vectorizer converts an image into image vectors representing respective blocks of image pixels. The table provides computation-free transformation and compression of the ima ...


68
Wei ge Chen, Ming Chieh Lee: Multi-level run length coding for frequency-domain audio coding. Microsoft Corporation, Klarquist Sparkman Campbell Leigh & Whinston, April 24, 2001: US06223162 (88 worldwide citation)

A technique for entropy coding information relating to frequency domain audio coefficients. For portions of a frequency spectrum having a predominate value of zero, a multi-level run length encoder statistically correlates sequences of zero values with non-zero values and assigns variable length cod ...


69
John F Remillard: Method and apparatus for iterative compression of digital data. PS Venture 1, Kenneth R Allen, Townsend and Townsend and Crew, January 23, 1996: US05486826 (87 worldwide citation)

Data compression is effected on arbitrary high entropy digitized data by compression and entropy transformation in an iterative system. Compression includes nonlinear addressing. Entropy transformation may involve any of a number of techniques to reorder distribution of data for testing to determine ...


70
Sunanda D Mitra: Adaptive vector quantization/quantizer. Texas Tech University, Jerry Cohen, Jacob N Erlich, Perkins Smith & Cohen, July 16, 2002: US06421467 (85 worldwide citation)

An adaptive vector quantization process and quantizer (VQ) using a clustering technique known as AFLC (adaptive fuzzy leader clustering) is disclosed. The quantizer, AFLC-VQ, has been designed to vector quantize wavelet decomposed sub images with optimal bit allocation. The high-resolution sub image ...



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