Two-dimensional bar code scanner interface

Details Two-dimensional bar code scanner interface Two-dimensional bar code scanner interface

1995-01-31

1998-08-04

Hajec, Donald T.

Registers

Coded record sensors

Particular sensor structure

235454, G06K 710

Patent

active

057897280

ABSTRACT:
An interface between a two-dimensional bar code scanner and a host digital decoder is provided through a 15-pin electronic connector, which transfers to the decoder an actuating signal either from a scanner trigger switch or from an external device. In response, the digital decoder provides the scanner with operating power. The scanner generates and relays a bar code signal and a scanning direction signal back to the digital decoder, which uses these signals to identify a bar code being scanned as a one-dimensional or two-dimensional code. If the bar code is determined to be a two-dimensional code, upon detection of laser pattern alignment with the label the digital decoder sends a scanning control signal to the scanner to control a laser pattern generated by the scanner.

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