| 摘要 |
PURPOSE:To isolate a scanner part and a discrimination processing part from each other, and to prevent the attenuation of a signal and the superposition of a noise by digitizing and transmitting analog picture information. CONSTITUTION:The analog picture information generated by the two-dimensional scanner 2 of the scanner part is outputted in parallel and inputted to an analog switch 6. The analog switch 6 selects analog picture signals successively and inputs them to a differential amplifier 7. The difference output of the differential amplifier 7 is inputted to a comparator 8 and converted into a digital signal therein. The digitized analog picture information is sent out to a line driver circuit 10 in series through a latch circuit 9. The line driver circuit 10 performs the digital transmission of the digitized analog picture information to the line receiver in the discrimination processing part. |
