US PATENT SUBCLASS 396 / 169
.~.~ Shutter speed function only

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

155  DF  WITH OBJECT ILLUMINATION FOR EXPOSURE {21}
166  DF  .~ Exposure control circuit with illumination mode {4}
169.~.~ Shutter speed function only

DEFINITION

Classification: 396/169

Shutter speed function only:

(under subclass 166) Subject matter in which the exposure control circuit adjusts an exposure time value to control a shutter only.

(1) Note. Manual control circuit that has an illumination mode and that adjusts both exposure time value and aperture value is classified in subclass 166.

SEE OR SEARCH THIS CLASS, SUBCLASS:

242+, for program mode in generic exposure control circuit.

246+, for adjustment of shutter speed function only in generic exposure control circuit.