US PATENT SUBCLASS 235 / 455
.~.~.~ Light level control

Current as of: June, 1999
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235 /   HD   REGISTERS

435  DF  CODED RECORD SENSORS {9}
439  DF  .~ Particular sensor structure {8}
454  DF  .~.~ Optical {10}
455.~.~.~ Light level control

DEFINITION

Classification: 235/455

Light level control:

(under subclass 454) Subject matter including means to maintain the light contrast or compensate for variations in the light contrast between the coded indicia to be sensed and the background level of the record.

SEE OR SEARCH THIS CLASS, SUBCLASS:

462.06, for a bar code reader including a light level adaptation means.

SEE OR SEARCH CLASS

250, Radiant Energy,

205, wherein the intensity of the light illuminating an area is controlled.