System and method for indicating the location of a benchmark
First Claim
1. In an optical scanning system including a dash code scanner for scanning a benchmark code printed on a document being transported through a paper handling machine, an improvement to initializing the optical scanning system relative to the location of the benchmark code in an electrically adjustable benchmark window, the improvement comprising:
- means for sensing a lead edge of a benchmark window;
scanner means for detecting a benchmark code;
means for generating a first signal beginning at the lead edge of the benchmark window and ending at the detection of the benchmark code;
means for deriving a count indicative of a number of encoder pulses between the lead edges of the benchmark window and the benchmark code; and
means for displaying said count on an LED display.
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Accused Products
Abstract
A method of initializing an optical scanning system by centering a benchmark code in an electrically adjustable benchmark window, the benchmark code being scanned by the optical scanning system while being transported through a paper handling machine. The improvement comprises the steps of providing an encoder for timing the machine cycles of the paper handling machine as a plurality of documents are processed therethrough; conveying a document containing a benchmark code to be scanned past a scanning device of the optical scanning system; enabling a counter at the lead edge of the electrically adjustable benchmark window; incrementing the counter once for every two encoder pulses; disabling the counter when the scanning device detects the benchmark code; displaying the count of the counter in a LED display; and adjusting the location of the benchmark window so that the benchmark code is substantially centered in the benchmark window based on the count displayed on the LED display.
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Citations
4 Claims
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1. In an optical scanning system including a dash code scanner for scanning a benchmark code printed on a document being transported through a paper handling machine, an improvement to initializing the optical scanning system relative to the location of the benchmark code in an electrically adjustable benchmark window, the improvement comprising:
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means for sensing a lead edge of a benchmark window; scanner means for detecting a benchmark code; means for generating a first signal beginning at the lead edge of the benchmark window and ending at the detection of the benchmark code; means for deriving a count indicative of a number of encoder pulses between the lead edges of the benchmark window and the benchmark code; and means for displaying said count on an LED display. - View Dependent Claims (2, 3)
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4. A method of initializing an optical scanning system by centering a benchmark code in an electrically adjustable benchmark window, the benchmark code being scanned by the optical scanning system while being transported through a paper handling machine, comprising the steps of:
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providing an encoder for generating timing pulses for the paper handling machine as a plurality of documents are processed therethrough; conveying a document containing a benchmark code to be scanned past a scanning device of the optical scanning system; enabling a counter at the lead edge of the electrically adjustable benchmark window; incrementing the counter once for every n encoder pulses; disabling the counter when the scanning device detects the benchmark code; displaying the count of the counter in a LED display; and adjusting the location of the benchmark window so that the benchmark code is substantially centered in the benchmark window based on the count displayed on the LED display.
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Specification