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:
May. 10, 2005
Filed:
Apr. 29, 2003
Karl V. Perttunen, Sylvan Lake, MI (US);
Mark R. Caron, Warren, MI (US);
David M. Chi, Birmingham, MI (US);
Karl V. Perttunen, Sylvan Lake, MI (US);
Mark R. Caron, Warren, MI (US);
David M. Chi, Birmingham, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
A multistage vehicle security system includes a transceiver that receives a first signal sent from a transponder and a controller that processes the first signal. The controller activates low level operational features of the vehicle if the signal is associated with an authorized transponder. The system also includes an entry sensor that detects the physical presence of a user. The transponder sends a second signal to the transceiver when the presence of the user is detected. The controller processes the second signal and activates midlevel operational features of the vehicle if the second signal is associated with the authorized transponder. Once the user is inside the vehicle, a sensor detects a biometric characteristic of the user. The user obtains access to one or more high level operational features of the vehicle if the detected biometric characteristic matches that of an authorized user.