Hitachi, Ltd.

Hitachi Microsoftware Systems, Inc.

Masahiro Okumura

Masaaki Fujinawa

Yasuo Kurosu

Seiichi Kanema

Hajime Uchiyama

Naoaki Kubushiro

Hirowo Shimizu

Kazutomo Kishimoto

Youji Kouno

Shinji Shibuya

Kazuo Honma

Yoshihiro Yokoyama

Kenichi Nishikawa

Tamon Masimo

Tatsuya Sakamoto

Koushirou Adachi

Toosaku Hattori

Hitoshi Tachi

Disclosed herein is a system integrally comprising a CAD system and an electronic filing system. When vector data such as figures and their names are converted to image (raster) data for storage, the system automatically extracts, from the vector data coming from the CAD system, those data that correspond to predetermined character attributes, maximum numeric attributes, primitives of each figure and the topology thereof. The data are set as key-words and are made to correspond to the image data for registration and storage into the electronic filing system. In searching for desired image data, the corresponding key-words are input for data retrieval and output.

Method and system for registering and filing image data

A drawing data obtained by a CAD device is extended once to an image data on a plane and the extended image data is coded and stored in an electronic file device so that every display can be done by merely reading data stored in the electronic file device, decoding and displaying it. The image data having a plurality of attributes is stored attribute by attribute so that the electronic file device can display only image having attribute or attributes instructed and it is possible to obtain only required image information among various informations contained in a complicated image and thus searching is facilitated.

Registration/search system for registering and searching image data

In a filing system having a storage device for storing image information and a display with a rectangular screen for visually displaying the stored image information, the screen is arranged to be positioned at an upright position or at a lateral position, with a motor. The switch between two positions of the screen is effected upon instruction input from a keyboard, or in accordance with the information representative of the screen position which is stored beforehand in the storage device for each of the image information. The screen is also provided with a tilting mechanism which is released while the screen rotates. There is compensate circuit compensating for a positional displacement of a displayed image caused by a difference of earth magnetism between two positions of the screen.

Method and apparatus for rotatable display

A filing method and a system for filing image data operate to divide an input image having a dot number larger than a predetermined dot number of a display screen at a fundamental unit equal to the display screen size, to file the divided input images as a plurality of partial image data on an optical disk, and to retrieve the filed images at high speed. The division filing system includes an input image process device for compressing the divided partial image data, and an index generating device, such as a complexity detecting circuit, for extracting either position information of a distinguishable partial image, or address information among the divided partial images. An optical disk device stores either the position information or the address information as well as the compressed image data into an optical disk. The image retrieval process sequentially reads the compressed image data of only the distinguishable particular image from the optical disk, while referring the address information or the position information image.

Method and apparatus for retrieving image data

Computer display

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Odawara, Japan

Masahiro Okumura