Hitachi, Ltd.

Hitachi Koki Co., Ltd.

Hirohide Endo

Susumu Saito

Kunihiro Okada

Shigeyuki Nishitani

Akira Nakajima

Hiromichi Fujisawa

Yasumasa Matsuda

Kenji Kataoka

Michihiro Mese

Hiroyuki Kumai

Tsukasa Yamauchi

Hitoshi Komatsu

Toshiharu Kawasaki

Akira Naito

Sayuri Oshima

Yukie Yamazaki

A graphic generating apparatus ane method in comprising a plurality of reference figures are stored and a plurality of figure parts are stored. One of the stored reference figures is selected and displayed and at least one of the plurality of figure parts is selected.

Method and apparatus for generating graphics

The present invention discloses a photoelectric converting apparatus which comprises a spot-like light beam generating source, an optical system scanning the light beam linearly on a scanned surface, and light receivers having a long piece along the direction of the scanned line and disposed close to the scanned surface in order to receive the reflected light from the scanned surface and generate an electric signal corresponding to the intensity of received light.

Photoelectric converting apparatus for optical scanning system

An optical input and output device which includes laser beam generating means, a photo-conductive drum to be formed with an electrolatent image according to the intensity of a laser beam, scanning means for simultaneously deflecting and distributing the laser beam between the surface of a sheet of paper written with a picture image to be received and the surface of the photo-conductive drum to irradiate and linearly scan the respective surfaces, and photoelectric converting means made receptive of the laser beam reflected from the paper surface thereby to convert it into an electric signal.

Optical input and output scanning system

A digitized multilevel signal is encoded on the basis of unit combinations each including a run-length bit field indicative of run-length at each of the signal levels and a single continuation bit indicative of transition of the signal levels. The encoding is so modified that a virtual run of zero length is inserted when the transition of the signal levels at adjacent sampling points departs from a predetermined order. Polarity of the continuation bit is inverted upon every transition of the signal level.

Multilevel signal compression method

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Tokorozawa, Japan

Hirohide Endo