Berler Robert M: Printed code scanning system. Pitney Bowes Alpex, November 20, 1973: US3774014 (139 worldwide citation)

A novel data processing system especially useful at check-out counters is provided that comprises a readout apparatus for sensing a printed code, which is placed on articles of merchandise, e.g. a binary code, which appears as an array of printed lines and spaces. The system includes a camera-type i ...