Motion picture camera operable by a single operating switch

Details Motion picture camera operable by a single operating switch Motion picture camera operable by a single operating switch

1976-03-04

1977-09-27

Hayes, Monroe H.

Optics: motion pictures

With automatic diaphragm control

352171, 352178, G03B 708

Patent

active

040507955

ABSTRACT:
A single operating switch replaces the main switch connecting the diaphragm control means to the battery and the release switch activating the film transport. All camera circuits are directly connected to the battery when the main operating switch is closed. An electronic switch is connected in series with the film transport motor and is closed only upon receipt of a control signal. In a first embodiment the control signal is furnished by a timing circuit after a predetermined time interval following the activation of the main operating switch. In a second embodiment the control signal is furnished by a NAND-gate which has a first input which receives a "1" signal while the diaphragm is being adjusted and a second input which receives a "1" signal while the electronic switch is open. The NAND-gate thus furnishes a "1" signal to the electronic switch causing it to be conductive at all times except when the initial adjustment of the diaphragm takes place.

REFERENCES:
patent: 3275399 (1966-09-01), Johnson
patent: 3391978 (1968-07-01), Reinsch
patent: 3452347 (1969-06-01), Stimson

Affiliated with

Also associated with

Rating

Motion picture camera operable by a single operating switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motion picture camera operable by a single operating switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motion picture camera operable by a single operating switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1811781