Kokusai Denshin Denwa Kabushiki Kaisha

Kokusai Denshin Denwa Co., Ltd.

Mitsubishi Heavy Industries Limited

Toshiaki Endo

Hiroaki Sato

Yasuhiro Yamazaki

Hisaharu Kato

Hiroki Akamatsu

A joint processing method includes: a friction stir welding step for forming a joint in a plate by friction stir welding a groove in the plate; a cold working step for cold working the joint under cold working conditions such that a grain size in the joint is not more than a grain size of an aluminum alloy in the groove prior to the friction stir welding step; and a solution heat treatment step for, subsequent to the cold working step, performing solution heat treatment of the plate.

Joint processing method and dome member

For decoding compressed digital image data of source image, end-of-block (EOB) codes appearing in entropy coded data are utilized to detect a portion of '0' elements in a frequency range coefficient matrix. An inverse orthogonal transform process is fully or partly omitted according to the '0' coefficient distribution.

Method for and system of decoding compressed continuous-tone digital

A multi-level image is encoded through dither conversion and hierarchy encoding with high image compression ratio and satisfactory image quality for low resolution images. An original multi-level image is first reduced so that a plurality of reduced images are obtained. Each reduced multi-layer image is then dithered to bi-level image, and finally each dithered bi-level image is encoded starting the smallest and the lowest resolution image to the largest and the highest resolution image. No temporary memory for reduced multi-level image is necessary, as a common multi-level line memory (LM2, LM3, LM4) doubles for storing a reduced multi-level image and a temporary memory for effecting dither conversion.

Hierarchy encoding system of multi-level image through dither conversion

An encoding method for facsimile signal which is characterized by encoding data of a line selected out of the all lines of input facsimile signals in a manner of skipping over a predetermined number of lines according to a predetermined encoding method and by encoding the data of one of the thus skipped-over lines from a basic element of higher picture quality contribution judged with reference made to the data of the lines preceding of and/or subsequent to the encoding line which have already been encoded.

Encoding method for facsimile signal

A coding method for a multilevel-gradated picture signal is disclosed, in that a series of binary codes obtained by processing a multilevel-gradated original picture signal for binary representation are segmented every predetermined number n of picture elements on each scanning line to form blocks, respectively capable of assuming value '0' to '2n-1'; and the value of a block having changed its value and its position on the scanning line are encoded so as to be reproduced on the reproducing side.

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Tokyo, Japan

Toshiaki Endo