Procedure for operating a locking system for lockable objects

US5790043A · kind A · utility

Assignees

• Temic Telefunken Microelectronik · DE
• Mercedes-Benz Group AG · DE

Inventors

• Gerhard Hettich · Roßtal, DE
• Reiner Doerfler · Lappersdorf, DE
• Peter Robitschko · Sindelfingen, DE

Key dates

• Filing date: Jun 30, 1995
• Grant date: Aug 4, 1998
• Expiry date: Jun 30, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T70/7062
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A process to operate a locking system for lockable objects which features a key module having a remote control unit and a transponder for transmitting and receiving coded signals, and a lock module, fitted inside or on the lockable object, comprising a receiver unit for detection of coded signals, an evaluation unit for verification of coded signals, and a control unit for actually carrying out the unlocking or locking operation on the lockable object. A bidirectional data transmission between the key module and the lock module takes place before unlocking or locking of the object. On receiving an unlocking or locking signal sent out by the key module, the lock module will go into a waiting or standby mode and itself send out control signals by use of a transmission unit. When the user approaches the lockable object, one of the control signals will be received and evaluated by the transponder of the key module. The transponder will then transmit a control signal to the lock module activating the control unit to carry out the requested unlocking or locking operation if the proper control signal is received.