The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2004
Filed:
Feb. 23, 2001
Sharmila Ghosh, Mainz, DE;
Gerd Gruchalski, Kreuztal, DE;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A securing system, in particular for motor vehicles, comprises at least one multi-functional sensor, which is simultaneously provided both as a radar unit and as a transmitter/receiver unit for communicating with an external device such as a user identifying transponder. The device may have multiple transmitters and/or receivers spatially situated to determine whether the external device is inside or outside the vehicle and may emit a HF-modulated signal that is frequency shifted and re-emitted by the external device and received by the multi-function sensor, wherein a security function may be performed based on both identifying information in the re-emitted HF-modulated signal and the distance to the transponder determined from the time duration between emission of the HF-modulated signal and reception of the re-emitted HF-modulated signal.