Code reading device and method with variable light signal storag

Details Code reading device and method with variable light signal storag Code reading device and method with variable light signal storag

1997-10-09

2000-01-04

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

235454, 23546241, 23546225, G06K 710

Patent

active

060100702

ABSTRACT:
In a method for optically reading a label carrying information recorded thereon using a charge coupled device, a storage time of an incident light signal in the charge coupled device is changed to effect proper reading. The light signal storage time is changed until the charge coupled device reads the code, and then the light signal storage time is fixed. Thereby, a code is read without failure by effectively preventing reading error or failure due to an excessively light or dark environment, or varying distance between the code and code reader. Thus, a code is correctly read regardless of whether the code is close or far.

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patent: 5572006 (1996-11-01), Wang et al.
patent: 5754670 (1998-05-01), Shin et al.
patent: 5773807 (1998-06-01), Barkan et al.
patent: 5784102 (1998-07-01), Hussey et al.
patent: 5814802 (1998-09-01), Hecht et al.

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