US PATENT SUBCLASS 396 / 93
.~.~ By modifying electric focus or drive signal

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


396 /   HD   PHOTOGRAPHY

89  DF  WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS {28}
91  DF  .~ Lens characteristic compensating {3}
93.~.~ By modifying electric focus or drive signal

DEFINITION

Classification: 396/93

By modifying electric focus or drive signal:

(under subclass 91) Subject matter including means to correct the data of a focus condition signal of the exposure objective in accordance with a desired in-focus condition signal.

SEE OR SEARCH CLASS

332, Modulators,

123+, and 159+ for frequency or amplitude modulation including stabilization, noise reduction, or compensation.