EP0154019B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coding method for an electronic key
Assignee: Siemens AG
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Filing: 1984-12-17
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Granted: 1988-07-20
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Expires: 2004-12-17
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Dr. techn./Phys. Dannhäuser
- 👤 Erwin Dipl.-Ing. Heuwieser (Fh)
- 👤 Heinz Dipl.-Phys. Preissinger
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 19:08
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00182; G07C9/20; G07C9/28; G07C2009/00753; G07C2009/00769; G07C2009/00785; G07C2209/00; G07C2209/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
A method of code safeguarding for an electronic key, in particular for motor vehicles with built-in centr locking, which comprises a transmitter which transmits a coded infrared signal which is received by a receiver tuned to the code, where the code of the signal can be set automatically in the transmitter and the receiver, and where the trarsmitter transmits reset ccde following desynchronisation or following battery change in the transmitter or the receiver, where the reset code releases a lock, operated by the receiver, for opening by a machanical key.
References Cited (Backward Citations)
No citation records indexed.
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