| 摘要 |
<p>1399658 Character feature recognition systems POLSKA AKADEMIA NAUK-INSTYTUT CYBERNETYKI STOSOWANEJ 7 June 1972 [7 June 1971] 26513/72 Heading G4R Signals representing a small area of a scanned character-bearing field are applied to AND gates 1-N, each gate receiving signals We 1a , etc. representing a horizontal slice of the area. The gates are energized sequentially by timing pulses We 1b etc., and their outputs are passed via a NOR gate A to a NOR gate B. Gate B normally receives a 0 signal from a NOR gate E and receives a 0 signal C which lasts for the duration of scanning of the area under investigation. The pulse output of gate B passes to counter D which feeds gate E. When the counter reaches a certain value gate E inhibits gate B and provides true and inverse signals G, H indicating the presence of a particular feature in the area.</p> |
