Device for transmitting data in a motor vehicle

US6693581B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Frank Gottwald · Rutesheim, DE
• Klaus Voigtlaender · Schallstadt, DE
• Slava Tihovsky · Stuttgart, DE
• Stefan Gaier · Stuttgart, DE
• Elmar Giehler · Stuttgart, DE
• Peter Crowhurst · Cockatoo, AU

Key dates

• Filing date: Dec 13, 2002
• Grant date: Feb 17, 2004
• Expiry date: Dec 13, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2209/63
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for data transmission in a motor vehicle and/or from a motor vehicle in its vicinity includes a first transceiver unit in or on the motor vehicle and a second transceiver unit. which is provided in at least one transponder unit whose spatial position relative to the vehicle may be variable or any desired position. In the first transceiver unit is a radar unit equipped for distance measurement, expanded by adding a two-channel data transmission system. The second transceiver unit is also a two-channel data transmission unit, and the microwave frequencies for two-channel communication of the data transmission system are selected so that their difference yields an intermediate frequency which is processable using conventional components in a heterodyne receiver in the reception part of each of the first and second transceiver units.