EP 0031046 B1 19850508 - DEVICE FOR DATA SECURE CONTROL AND SUPERVISION OF ELECTRIC EQUIPMENTS
Title (en)
DEVICE FOR DATA SECURE CONTROL AND SUPERVISION OF ELECTRIC EQUIPMENTS
Publication
Application
Priority
DE 2951932 A 19791221
Abstract (en)
[origin: US4356485A] In a remote control system which is operated by way of light wave guides a specific switching routine is executed at the receiving side upon failure of the system. As long as the remote control system functions properly, cyclically alternating signals, triggered at the transmission side, set a logic element at the receiving side so that the loads are connected for normal command-responsive operation. When the signals fail, or when a transmission is intentionally suppressed, the logic element is conditioned to cause execution of the specific switching routine. Given the design of the remote control system as a light signal control for traffic signals, the switching routine causes the connection of the STOP signal with simultaneous disconnection of the GO signals of the respectively affected light signal.
IPC 1-7
IPC 8 full level
B61L 7/08 (2006.01); B61L 7/10 (2006.01); G08B 23/00 (2006.01); G08B 29/04 (2006.01); G08G 1/097 (2006.01)
CPC (source: EP US)
B61L 7/088 (2013.01 - EP US); B61L 7/10 (2013.01 - EP US); G08B 29/04 (2013.01 - EP US); G08G 1/097 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0031046 A2 19810701; EP 0031046 A3 19820811; EP 0031046 B1 19850508; EP 0031046 B2 19900627; AT E13164 T1 19850515; DE 2951932 A1 19810702; DE 2951932 C2 19830818; DE 3070628 D1 19850613; US 4356485 A 19821026; ZA 807974 B 19820127
DOCDB simple family (application)
EP 80107434 A 19801127; AT 80107434 T 19801127; DE 2951932 A 19791221; DE 3070628 T 19801127; US 21030880 A 19801125; ZA 807974 A 19801219