(under subclass 216) Subject matter comprising data bearing means containing information in symbolic form where the symbols are arbitrarily given certain meanings and means for illuminating said data bearing means prior to the photoelectric cell; or methods of using such means.
(1) Note. The coded record may be illuminated by a light source or it may be the source of illumination.
SEE OR SEARCH THIS CLASS, SUBCLASS:
271, for invisible radiation responsive code readers.
555, in which the photocell controls an electrical or electromechanical system.
SEE OR SEARCH CLASS
235, Registers, 454+, for coded record sensing devices utilizing light to sense the coded indicia on the record and including particular circuitry to process the electrical signals generated by the sensing process. The term processing of signals includes: (1) generation and utilization of timing signals and sync signals, (2) the storage of signals and (3) the incorporation of means for counting.
