Information searching device

Details Information searching device Information searching device

1974-08-26

1976-06-15

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250570, 353 26A, G01N 2130

Patent

active

039639371

ABSTRACT:
An automatic information searching arrangement for searching desired image information from a record web having image information and searching marks placed thereon. The present invention provides scanning device which incorporates therein a light source and an image pickup tube or a flying spot cathode-ray tube and a photoelectric converter to convert it into an electric signal in time series. The blip zone in the record web is projected by the scanning device to convert it into an electric signal in time series whereby a desired information frame may automatically be searched. The information searching device comprises a unit for feeding a record web, a unit for scanning searching marks, a unit for forming one count signal from a plurality of mark signals generated from the scanning unit, and a conrol unit for generating a signal for controlling the feed of the record web. The record web may accurately be positioned by the arrangement of the present invention.

REFERENCES:
patent: 3435243 (1969-03-01), Webb
patent: 3443108 (1969-05-01), Burmeister
patent: 3564209 (1971-02-01), Loughnane
patent: 3643098 (1972-02-01), Willits
patent: 3700320 (1972-10-01), Brewer et al.
patent: 3768897 (1973-10-01), Spani
patent: 3802771 (1974-04-01), Mickelson
patent: 3820884 (1974-06-01), Sone et al.
patent: 3849660 (1974-11-01), Hommerin

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