Title:
INFORMATION TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JPS5290791
Kind Code:
A
Abstract:
PURPOSE: To enhance the reliability of a duplex information transmission system by performing all-time abnormality-test as to an auxiliary unit by means of a signal testing circuit.
Inventors:
SHIMODA TOSHIO
Application Number:
JP714176A
Publication Date:
July 30, 1977
Filing Date:
January 27, 1976
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
H04L1/22; G08C25/00; H04Q9/00; H04Q9/14; (IPC1-7): G01D5/249; H04Q9/16
Domestic Patent References:
| JPS4935843A | 1974-04-03 | |||
| JPS4730378A | ||||
| JP40001407A |