Handy scanner

Abstract

Abstract PURPOSE: To prevent the operation mistake with calculation and display of scanning possible sub-scanning distance remained, by providing the movement length detector detecting the movement of subscanning and the subscanning direction movement distance set unit. CONSTITUTION: When the original is scanned with the handy scanner, the transfer pulse is produced, it is inputted to the 1/4 frequency dividing cirfuit 32 and inputted to the clock input terminal of the BCD counter 23 at the first digit. That is, every one input of pulse, the counter 23 performs down count, The borrow output of the counter 25 at the thrid digit sets FF33 and it is inputted to the enable terminal of the segment data drivers 26W28 operating the multivibrator 34 with the output to flicker the 0 display of the three 7 segment LED displays 29W31 and to inform the end of scanning for one line's share. FF33 inputs LOAD signal and releases the 0 display flicker. It displays the input enable of the clock signal to the counter 23 and sets the buffer memory control circuit 22 to the initial state. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Shinji Miura

Bibliographic Details