Invention Grant
- Patent Title: Multi-line scan mark verification circuit
- Patent Title (中): 多行扫描标记验证电路
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Application No.: US154742Application Date: 1980-05-30
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Publication No.: US4357596APublication Date: 1982-11-02
- Inventor: Michal M. Feilchenfeld
- Applicant: Michal M. Feilchenfeld
- Applicant Address: PA Pittsburgh
- Assignee: Westinghouse Electric Corp.
- Current Assignee: Westinghouse Electric Corp.
- Current Assignee Address: PA Pittsburgh
- Main IPC: G06K7/10
- IPC: G06K7/10 ; G06K7/14
Abstract:
In a document scanning scheme where data is preceded on the document by a preprinted document scan mark, circuitry is employed to utilize multiple line scans of the scan mark by a line scan camera to verify the presence of a scan mark and avoid erroneous response to random marks on the document.
Public/Granted literature
- US5374969A Portable overhead projector Public/Granted day:1994-12-20
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