Scanning system presence sensing apparatus and method

Details Scanning system presence sensing apparatus and method Scanning system presence sensing apparatus and method

1989-09-21

1991-10-22

Levy, Stuart S.

Registers

Coded record sensors

Particular sensor structure

235454, 235467, 235473, G06K 710, G06K 714

Patent

active

050597779

ABSTRACT:
A scanning system having a laser and a motor for spinning an optical mirror arrangement for sensing indicia such as bar codes is capable of turning off the laser and the motor during periods of extended inactivity in order to minimize wear of these components and to reduce the use of electricity. Changes in the ambient light level adjacent to the scanning system which are typical of human motion are detected and are used to produce an electrical signal which can be used to turn the laser and the motor back on.

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U.S. Patent Application Ser. No. 410,685; filed Sep. 21, 1989; NCR Docket No. 4438; assigned to NCR Corporation.

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