US PATENT SUBCLASS 235 / 462.06
.~.~.~.~ Light level adaptation

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}
462.01  DF  .~.~.~ Bar code {20}
462.06.~.~.~.~ Light level adaptation

DEFINITION

Classification: 235/462.06

Light level adaptation:

(under subclass 462.01) Subject matter including means to maintain the light contrast or compensate for variations in the light contrast between the bar code to be sensed and the background illumination of the record.

SEE OR SEARCH THIS CLASS, SUBCLASS:

455, for a coded record sensor with light level control.

SEE OR SEARCH CLASS

250, Radiant Energy,

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

359, Optics: Systems (Including Communication) and Elements, 237+, 325 for optical modulator and demodulator.