Registers – Coded record sensors – Particular sensor structure
Patent
1994-12-12
1996-03-26
Pitts, Harold
Registers
Coded record sensors
Particular sensor structure
235454, 235463, G06K 710
Patent
active
055022979
ABSTRACT:
A method and apparatus for detecting the presence of a surface which may bear a bar code symbol. The apparatus generates a series of pulses having a duty cycle which depends upon whether light reflected from a surface bearing a bar code symbol has been detected recently. If such a surface has been detected, the duty cycle is maintained at a high rate. Otherwise, the duty cycle is reduced substantially until such a surface is again detected to save battery power.
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Intermec Corporation
Pitts Harold
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