Camera exposure control system having digitally controlled timin

Details Camera exposure control system having digitally controlled timin Camera exposure control system having digitally controlled timin

1975-11-17

1977-11-15

Adams, Russell E.

354 43, 354 50, 354 60A, G03D 708

Patent

active

040588165

ABSTRACT:
This invention provides apparatus for producing a command signal used to control the closing of a camera shutter. Before the shutter opens, a photo-responsive portion of the apparatus generates a number of serially occurring data pulses. After the shutter opens, a timing pulse generator portion produces a number of serially occurring timing pulses. A memory portion, including a plurality of registers, accumulates a decimal count of the serially occurring data pulses with each register storing a respective one of unit and higher decimal place portions of the decimal count. The memory forms part of a comparison circuit arrangement which responds to the data pulses and the timing pulses to produce the command signal.

REFERENCES:
patent: 3748979 (1973-07-01), Wada
patent: 3827065 (1974-07-01), Wada
patent: 3928858 (1975-12-01), Sakurada et al.
patent: 3969735 (1976-07-01), Nobusawa

Affiliated with

Also associated with

Rating

Camera exposure control system having digitally controlled timin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Camera exposure control system having digitally controlled timin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera exposure control system having digitally controlled timin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1722546