Device for locking and unlocking a door of a motor vehicle

US6172430A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Stephan Schmitz · Stuttgart, DE
• Achim Wach · Markgröningen, DE
• Lothar Groesch · Stuttgart, DE
• Karl-Heinz Kaiser · Tamm, DE

Key dates

• Filing date: Dec 16, 1998
• Grant date: Jan 9, 2001
• Expiry date: Dec 16, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2009/00793
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A device for locking and unlocking a door of a motor vehicle. The device includes a transmitting unit located on the motor vehicle and at least one transponder with an access authorization code assigned to a user. To allow flexible adjustment to different situations, the information exchanged between the transmitting unit and transponder contains not only an access authorization code but also a driving authorization code. In addition to the transponder, at least one additional storage device is provided in or on the vehicle for storing the driving authorization.