| 摘要 |
<p>PURPOSE:To minimize the storage capacity of a CPU and to read a character of a long code, by detecting whether the center bar of a JAN corresponds to the light bar of a CPU code of a character which is half the center bar in case an error arises to one of bars following the center bar. CONSTITUTION:A read bar code is supplied to a CPU5 via an AND gate 4 by means of a hand scanner 1, an A/D converter 2 and a pulse detecting circuit 3. Then memories M and D, a time counter Tc and an RS-FE6 are connected to the CPU5. The gate 4 is controlled by the output of the FF6, and the output of the gate 4 is applied to the CPU5 as an interruption signal to read the width value of a bar code. If an error arises to one of bars following a center bar, it is detected whether the center bar of a JAN corresponds to a driver of a CPU code of a character which is half the center bar. The decoded character data which is decoded at a time point when the CPU code is detected is transferred to the CPU5.</p> |
