Rotary encoder for detecting a rotating position of a motor

Details Rotary encoder for detecting a rotating position of a motor Rotary encoder for detecting a rotating position of a motor

1992-09-11

1994-07-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023114, G01D 534

Patent

active

053311540

ABSTRACT:
In an image sensing apparatus having a solid-state image sensor provided with an antiblooming gate and an electronic flash device, a clock signal generating circuit is arranged to apply to the gate a clock signal at a given frequency during the flashing period of the flash device and at a lower frequency than the given frequency during a period immediately before the flashing period and a period after completion of flashing by the flash device. The device includes a rotary encloder with light transmitting, blocking and semi-transmitting sections. The position of the encoder is used in an exposure means for controlling an exposure condition of a photoconverting member.

REFERENCES:
patent: 2901170 (1959-08-01), Poole
patent: 4866268 (1989-09-01), Tang et al.
patent: 4866269 (1989-09-01), Wlodarczyk et al.
patent: 4972078 (1990-11-01), Hasebe et al.
patent: 5021735 (1991-06-01), Maass et al.

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