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Hiroyoshi Yuasa, Tadashi Satake, Mario Jose Cardona, Hisataka Fujii, Akira Yasuda, Koji Yamashita, Satoru Suzaki, Hideki Ikezawa, Masami Ohno, Akira Matsuzaki, Junichi Suzuki, Junko Nakano: Virtual LAN system. Matsushita Electric Works, Greenblum & Bernstein, July 4, 2000: US06085238 (499 worldwide citation)

A virtual LAN system forms a virtual group which is based on elements having physical attribute or logical attribute and constituting a virtual LAN, sets a client address and priority of the virtual group in a virtual group registration table, and allocates unicast and broadcast traffic bands in gro ...


2
Akira Yasuda, Hiroyoshi Yuasa, Satoshi Furukawa, Nobuo Matsuo, Hisataka Fujii, Masami Hisada, Yoshihiko Tokunaga, Tadashi Satake, Hiroshi Hamada, Yoshitaka Morikawa, Nobumoto Yamane: Picture encoding system. Matsushita Electric Works, Leydig Voit & Mayer, October 1, 1991: US05054103 (159 worldwide citation)

A picture encoding system which performs a prediction of picture element values within a block having a plurality of picture elements into which an original picture is divided, a discrete sine transform with respect to prediction error signals for obtaining a transform coefficient, a quantization of ...


3
Hiroyoshi Yuasa, Akira Yasuda, Koichi Omura: Visual Image sensor system. Matsushita Electric Works, Burns Doane Swecker & Mathis, July 7, 1987: US04679077 (137 worldwide citation)

A visual image sensor system for detecting an abnormal change in a monitored scene is disclosed, wherein normal changes which may occur in the monitored scene are previously memorized to be selectively compared with changes in the monitored scene, whereby the normal changes are discriminated from th ...


4
Hiroyoshi Yuasa, Koichi Omura: Picture transmission system using secondary differential variable sampling rate coding. Matsushita Electric Works, Joseph G Seeber, October 27, 1987: US04703348 (21 worldwide citation)

A picture transmission system of the present invention is adapted to code picture data by a variable sampling rate coding system to transmit the same. Picture data are stored in a frame memory (16) of a transmission area so that differential values between the same and predictors from a predictive c ...


5
Akira Yasuda, Kazuhisa Akiyama, Toshinari Nakao, Hiroyoshi Yuasa: Individuality discriminating system. Matsushita Electric Works, Burns Doane Swecker & Mathis, October 27, 1987: US04703347 (16 worldwide citation)

An individuality discriminating system wherein analog signals of a human individual picture are converted to digital signals according to brightness of the picture, and such digital signals are stored as individual picture data in an integrated-circuit (IC) card as compressed, with picture elements ...


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Koichi Omura, Hiroyoshi Yuasa: Method and apparatus for speech message recognition. Matsushita Electric Works, Burns Doane Swecker & Mathis, April 2, 1985: US04509186 (13 worldwide citation)

Speech recognition by first log-compressing the speech signal, then filtering into subband signals which are subtracted to form an indicator of voiced, unvoiced and silence intervals, whereby sequence and duration patterns are coded in +1, -1, and zero.


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Hiroyoshi Yuasa, Koichi Omura: Picture transmission system using secondary differential variable sampling rate coding. Matsushita Electric Works, Joseph G Seeber, June 27, 1989: US04843465 (5 worldwide citation)

A picture transmission system of the present invention is adapted to code picture data by a variable sampling rate coding system to transmit the same. Picture data are stored in a frame memory (16) of a transmission area so that differential values between the same and predictors from a predictive c ...