Patent EP0184915B1 successfully refreshed from Google Patents.
Patent EP0154019A1 successfully refreshed from Google Patents.
EP0154019A1
Expired / Lapsed
EP
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Coding method for an electronic key
Assignee: Siemens AG
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Filing: 1984-12-17
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Granted: —
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Expires: 2004-12-17
Abstract
Abstract 1. A method of code safeguarding for an electronic key, in particular for motor vehicles with built-in central 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 transmitter transmits a reset code following desynchronization or following a battery change in the transmitter or the receiver, where the reset code releases a lock, operated by the receiver, for opening by a mechanical key.
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 17:01
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
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References Cited (Backward Citations)
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