Title:
CONTROL SYSTEM
Document Type and Number:
Japanese Patent JPS58119011
Kind Code:
A
Abstract:
PURPOSE:To obtain a device which permits a decrease in the number of connecting lines among devices including an earth line to two by providing the devices respectively with a reading circuit, driving circuit, etc., which operate only by specific signals. CONSTITUTION:The plural devices are respectively provided with the reading circuit, driving circuit, etc., which operate by only specific signals and those circuits are put in operation by time-series signals having prescribed patterns from a controller. For example, a current from a power source 301 is inputted to the input terminal 55 of a unit circuit UC through the operation of a main switch 302 and a signal having a prescribed valtage level is separated through diodes 28-41 for reverse current prevention, comparators 11-13, etc., and supplied to memories 14-17. Then, a control circuit 308 sends out a signal for specifying a prescribed memory to be read and information read out of the specified memory by holding the output of an AND gate 322 at a level H is written in a memory 15 through a signal line 7 and the comparator 12.
Inventors:
ICHIYANAGI TOSHIICHI
Application Number:
JP149682A
Publication Date:
July 15, 1983
Filing Date:
January 07, 1982
Export Citation:
Assignee:
CANON KK
International Classes:
G05B24/00; G08C19/00; (IPC1-7): G05B24/02
Attorney, Agent or Firm:
Marushima Giichi