Retrieval system

Details Retrieval system Retrieval system

1978-01-25

1979-05-01

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

353 27A, 358 93, 358210, H04N 718, G03B 2308

Patent

active

041527224

ABSTRACT:
A recording medium such as a microfiche bearing graphic information like a map in a reduced scale is provided in a retrieval unit including an optical projection system connected with a television type display device. The recording medium is moved with respect to the optical projection system by an X-Y moving device which is operated by an electric position signal. The electric position signal is given by a position detecting device. The position detecting device has a graphic information similar to that recorded in the recording medium and a detecting pen to point a desired spot on the graphic information and a joy stick to give the position signal to the X-Y moving device.

REFERENCES:
patent: 3697680 (1972-10-01), Anstin
patent: 3749830 (1973-07-01), Blitchington
patent: 3870814 (1975-03-01), Woods

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