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公开(公告)号：US3585590A
公开(公告)日：1971-06-15
申请号：US3585590D
申请日：1967-12-05
Applicant: PHILIPS CORP
Inventor： HOFFMAN HANS , PODDIG DIETER
CPC classification number: G06K9/20
Abstract: A photoelectric sensing device for providing cyclical indicators of interrogation points in accordance with the width of a sensed character area is constructed with a counter which indicates the first point at the beginning of the first vertical character line of a character, thereby beginning to cycle at a first frequency. At the end of the line, the counter begins again at double the rate. The counter then cycles once between each pair of interrogation points, and the number of zeros emitted by the counter signifies the number of interrogation points.
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