Matsushita Electric Works, Ltd.

Hisataka Fujii

Akira Yasuda

Hiroyoshi Yuasa

Tadashi Satake

Koji Yamashita

Satoshi Furukawa

Junichi Suzuki

Yoshitaka Morikawa

Yoshihiko Tokunaga

Satoru Suzaki

Masami Ohno

Akira Matsuzaki

Junko Nakano

Mario Jose Cardona

Nobumoto Yamane

Hideki Ikezawa

Nobuo Matsuo

Masami Hisada

Hiroshi Hamada

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 group units.

Virtual LAN system

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 the transform coefficient for encoding quantized indexes, an inverse quantization of the quantized indexes for reproduction of the transform coefficient, an inverse discrete sine transform of the reproduced coefficient to reproduce the prediction error signal, and an addition thereto of the predicted picture element value for reproducing the picture element values within the block to employ them in predicting a next stage block to be encoded, whereby the block can be minimized in size while simplifying required transform operation.

Picture encoding system

Growing community of inventors

Saitama, Japan

Hisataka Fujii