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System and method of reading bar code with two scanning beams

  • US 6,189,796 B1
  • Filed: 07/16/1999
  • Issued: 02/20/2001
  • Est. Priority Date: 01/31/1997
  • Status: Expired due to Term
First Claim
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1. A device for reading a bar code, comprising:

  • a scan unit, containing a light source, selectively emitting a first scan pattern and a second scan pattern for reading a bar code respectively in first and second modes;

    a switch, manually operatable by an operator, for switching from the first and to the second scan pattern; and

    a controller controlling the scan unit to switch from the first scan pattern to the second scan pattern, responsive to operation of the switch, and to switch from the second scan pattern to the first scan pattern when a predetermined period has passed after the switch is released.

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