Optics: image projectors – Selective data retrieval – Film strip
Patent
1975-07-21
1976-12-28
Artis, Henry K.
Optics: image projectors
Selective data retrieval
Film strip
235 92DN, 235 6111E, 250570, G03B 2312
Patent
active
039998460
ABSTRACT:
In an information search device for searching for any desired information in a film provided with a series of information frames, frame index marks and document index marks formed along the information frames on the opposite sides thereof, there is provided a drive motor for transporting the film, a light source system for irradiating the film, a photoelectric converter element for detecting the frame index marks, a second photoelectric converter element for detecting the document index marks, a gate circuit for receiving the detection signals from the converter elements to selectively pass one of those detection signals, a counter for counting the detection signals passed through the gate circuit, and a brake mechanism for stopping the transport of the film when the counter has counted up a number of detection signals corresponding to the search number of the desired information.
REFERENCES:
patent: 3290987 (1966-12-01), James et al.
patent: 3700320 (1972-10-01), Brewer et al.
patent: 3741645 (1973-06-01), Hollwedel et al.
patent: 3744890 (1973-07-01), Suzuki et al.
patent: 3778630 (1973-12-01), White et al.
patent: 3802614 (1974-04-01), Russell et al.
Sone Yoshiharu
Ueno Fumio
Artis Henry K.
Canon Kabushiki Kaisha
Shepperd John W.
LandOfFree
Information search device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Information search device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information search device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-145857