UPC SYMBOL DECODING SYSTEM

摘要

SW-877 UPC SYMBOL DECODING SYSTEM A symbol decoding system for decoding symbols comprised of plurality of bars some of which representing characters, comprising, means for providing a series of pulses representative of said bars, means for counting the interval between positive transitions between adjacent pulses, means for counting the interval between negative transitions between adjacent pulses, means for storing said counted intervals, means for testing for certain predetermined relationships among said counted intervals, and means identifying particular characters whenever said predetermined relationships are satisfied.