Title:
LOCAL STATION SIDE CHANGE-OVER SYSTEM OF REMOTE SUPERVISORY CONTROL SYSTEM
Document Type and Number:
Japanese Patent JPS5341688
Kind Code:
A
Abstract:
PURPOSE: To enable signal reception from two key stations by a single receiving circuit by means of possible change-over of selecting control signal circuit at a time when a selecting control signal is given from the key station.
Inventors:
TERADA YASUHIRO
Application Number:
JP11577176A
Publication Date:
April 15, 1978
Filing Date:
September 29, 1976
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H04Q9/00; (IPC1-7): H04Q9/16