Device and method for reading bar code

Details Device and method for reading bar code Device and method for reading bar code

1996-04-10

1999-08-24

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

23546206, 23546222, 23546223, 23546224, 23546244, 235454, G06K 714

Patent

active

059427426

ABSTRACT:
By a user setting process, the set values of a number of scans and the LED lighting-on pulse-width are written, in advance, into a set value table stored in an EEPROM. Before a measurement starts, a CPU reads out table set values from the EEPROM, and a CCD-drive control circuit drives a CCD image sensor at the maximum operating frequency. After the measurement starts, a light-projection LED drive circuit lights on the light-projection LED array on the basis of the set value of the LED lighting-on pulse-width. The CCD-drive control circuit changes the interval of the outputting of a CCD-drive control signals CD on the basis of the set value of the number of scans.

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