Optical character reading system
First Claim
Patent Images
1. An optical character reading system comprising:
- means for optically scanning a two-dimensional character pattern by a single sensor in a single sweep of said sensor past said character pattern for optically recognizing said character pattern at a plurality of different relative positions between said single sensor and said character pattern to provide a plurality of recognition results; and
means for subjecting said plurality of recognition results to selection to provide a final single recognition result of said character pattern.
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Abstract
An optical character reading system in which each character pattern is electronically scanned several times while a manually held scanner is moved over the character pattern. The recognition results from each scan are subjected to a selection process and a final signal recognition result is generated in which noise and inaccurate recognition results have been substantially eliminated. Data from a character scanner is classified into several different data types from which partial characteristics are determined. Signals representing the partial characteristics operate a memory circuit which produces the final recognition signal.
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Citations
10 Claims
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1. An optical character reading system comprising:
- means for optically scanning a two-dimensional character pattern by a single sensor in a single sweep of said sensor past said character pattern for optically recognizing said character pattern at a plurality of different relative positions between said single sensor and said character pattern to provide a plurality of recognition results; and
means for subjecting said plurality of recognition results to selection to provide a final single recognition result of said character pattern. - View Dependent Claims (2, 3, 4)
- means for optically scanning a two-dimensional character pattern by a single sensor in a single sweep of said sensor past said character pattern for optically recognizing said character pattern at a plurality of different relative positions between said single sensor and said character pattern to provide a plurality of recognition results; and
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5. An optical character reading system in which a character pattern is scanned by a sensor composed of photoelectric elements to recognize said character pattern comprising:
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scanner means for scanning said character pattern a plurality of times in a single sweep of said scanner past said character pattern, said scanner means including an optical system, a single sensor and a control and binary-coding circuit; a line characteristics extracting circuit coupled to an output of said binary-coding circuit; a partial characteristics extracting circuit coupled to an output of said line characteristics extracting circuit; a recognition process circuit having an input coupled to an output of said partial characteristics extracting circuit; a recognition results detecting circuit having an input coupled to an output of said recognition process circuit, a final single recognition result, upon each character being optically recognized a plurality of times at different relative positions of said sensor and character pattern in a single recognition operation, being produced at an output of said recognition results detecting circuit; and a character area detecting circuit having an input coupled to said output of said control and binary-coding circuit, outputs of said character area detecting circuit being used to control operations of said line characteristics extracting circuit and said recognition results detecting circuit. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification