EP 0385070 B1 19940216 - Remote control system with a code transmitted by code words.
Title (en)
Remote control system with a code transmitted by code words.
Title (de)
Fernwirksystem mit durch Codeworte übertragbarem Code.
Title (fr)
Système de commande à distance avec transmission de code à mots de code.
Publication
Application
Priority
DE 3905651 A 19890224
Abstract (en)
[origin: EP0385070A1] The security of a telecontrol system based on wireless code transmission by means of one or more independent transmitters to a receiver and applicable to any objects, particularly to centrally lockable motor vehicles, is enhanced in that an invariable code component which is transmitted together with a code component, which is a variable in accordance with a predetermined algorithm, during each code transmission, is object-specifically stored both in each transmitter and in the object-fixed receiver. A synchronising process between a transmitter and the receiver which, in any case, can only be carried out as a function of a mechanical code restriction, is possible only when the individual object-specific code component of the respective transmitter is stored in the receiver and can be called up. <IMAGE>
IPC 1-7
IPC 8 full level
E05B 49/00 (2006.01); B60R 16/02 (2006.01); G07C 9/00 (2006.01); H04Q 9/00 (2006.01); H04Q 9/14 (2006.01)
CPC (source: EP US)
G07C 9/00182 (2013.01 - EP US); G07C 2009/00253 (2013.01 - EP US); G07C 2009/00785 (2013.01 - EP US)
Citation (examination)
Designated contracting state (EPC)
ES FR GB IT SE
DOCDB simple family (publication)
EP 0385070 A1 19900905; EP 0385070 B1 19940216; DE 3905651 A1 19900830; DE 3905651 C2 19920409; ES 2051390 T3 19940616; JP H02250497 A 19901008; JP H0771339 B2 19950731; US 5159329 A 19921027
DOCDB simple family (application)
EP 90100689 A 19900113; DE 3905651 A 19890224; ES 90100689 T 19900113; JP 4134090 A 19900223; US 80075591 A 19911202