Hitachi, Ltd.

Shuuichi Miura

Yoshiki Kobayashi

Atsushi Kawabata

Kimiya Yamaashi

Yuji Taki

Shinya Tanifuji

Tadashi Fukushima

Yasuo Morooka

Korefumi Tashiro

Kotaro Hirasawa

Masao Takatoo

Masakazu Yahiro

Kazuyoshi Asada

Takeshi Katoh

Kazuo Kera

Yoshiyuki Okuyama

Yoichi Takagi

Masaki Katahira

Satoru Murata

A plurality of letter output devices (workstations, printers) are connected to a letter data control device by a transmission path. The control device stores letter data for transmission to the letter output devices, and is able to convert that letter data to a desired layout (e.g. from a vector font to a dot font) and then transmits the converted letter data to one or more of the letter output devices. The control device is able to select part of its stored letter data for transmission so that only commonly used letter data need be transmitted during start up of the system. Since a large amount of letter data may be stored in the control device, and only part may be transmitted to the letter output devices, those output devices can have a relatively small memory.

System for centrally controlling letter data

A train control system includes an equipment for issuing, to a train under control based on a predetermined train schedule, an operational target to be attained in terms of the aimed position, aimed time and aimed speed. Once a target is issued, a possible run region of the train is determined, and another target may be set within the possible run region such that the train is not subjected to the ATC-based speed limitation or the like, thereby minimizing the cause of delay of the train operation.

Train control system

A graphic processing device is composed of a main storage device, a drawing control device and a drawing device. The main storage device stores data relative to the coordinates of plural graphics. The drawing control device reads out the data relative to the coordinates of the plural graphics stored in the main storage device, scans the coordinate data to calculate the coordinates of intersecting points of a scanning line and the plural graphics for each position of the scanning line. The drawing control device also determines an overlapping area (AND area) or a common area (OR area) of the plural graphics on the basis of the coordinates of the intersecting points of the plural graphics and the scanning line. The drawing device draws the overlapping area (AND area) and the common area (OR area) of the plural graphics as a graphic.

Graphic processing method for drawing an area defined by clipping of a

An LSI parallel image processor in which line buffers and data-flow switching circuits each requiring a larger amount of hardware in the prior art are incorporated into an LSI circuit, the image data delayed by the line buffers is output from an image data output port, shift registers each having a variable number of steps for preserving local image regions are intermittently shifted-in in accordance with applied clocks, and the contents of the shift registers are sequentially read out.

Parallel image processor for performing local neighboring image

A conversational picture processing system having a temporary memory for storing picture processing commands inputted by an operator. The system executes picture processing commands inputted by the operator, displays processed picture as a result of execution of each command, and stores the commands in the temporary memory. The system reads out a picture processing command specified by the operator from the temporary memory and stores the command as a registered command in a command list memory within the system.

Conversational picture processing system

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Hitachi, Japan

Shuuichi Miura