Bar code scanner providing aural feedback
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United States of America Patent
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-
May 30, 1995
Grant Date -
N/A
app pub date -
Oct 18, 1993
filing date -
Oct 18, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method is disclosed for the reading graphical indicia that are encoded in accordance with a multidimensional symbology. The indicia are repeatedly scanning a signal representative of a pattern thereof until sufficient information is recognized to assure a valid reading operation. The signal, or a memorized representation thereof is decoded to obtain character information from code words of the indicia. A first value is assigned to each newly recognized character, and a second value is assigned to each character that was recognized in a preceding scan of the indicia. The first and second values are respectively cumulated into first and second sums. A function of the first sum and the second sum is computed, an audible click produced whenever a predetermined value of the function has been attained. The first and second sums are then reset. The rate of clicks informs the user of the progression of the reading operation. An auxiliary audible indicator, such as pitch, can be varied to inform the user of the cumulative progress of the scan.
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Cited Art Landscape
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