Display-equipped optical reader having decode failure image display feedback mode
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United States of America Patent
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Issued Date -
May 15, 2003
app pub date -
May 21, 2001
filing date -
May 21, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention is an optical reader configured to operate in a decode fail image display feedback mode. When operating in a decode fail image display feedback mode, a reader according to the invention waits for a trigger to be actuated, and when a trigger is actuated captures a frame of image data and attempts to decode decodable indicia represented within the frame of image data. The reader displays an image corresponding to a recently captured frame of image data on the reader display to aid in the user in positioning the reader relative to a display, but only in the case that decoding is unsuccessful. If decoding succeeds no image is displayed on the reader display. By withholding display of an image corresponding to a captured frame unless and until there is an unsuccessful decoding attempt, a reader according to the invention provides a user with an image display feedback which aids positioning of a reader relative to a decodable indicia without deleteriously affecting initial positioning of the reader, which positioning is normally substantially accurate in the absence of display feedback.
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