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:
Apr. 27, 2010
Filed:
Dec. 30, 2005
Sethu K. Madhavan, Canton, MI (US);
Eray Yasan, Canton, MI (US);
Abhijit D. Patil, Westland, MI (US);
Daniel N. Aloi, Rochester Hills, MI (US);
Sethu K. Madhavan, Canton, MI (US);
Eray Yasan, Canton, MI (US);
Abhijit D. Patil, Westland, MI (US);
Daniel N. Aloi, Rochester Hills, MI (US);
General Motors LLC, Detroit, MI (US);
Abstract
A method of improving a vehicle emergency call network used during an enhanced 911 call, which is especially useful in environments having degraded GPS signals. The present method utilizes an independent position enhancement algorithm, such as a dead reckoning algorithm, and converts the output of that algorithm into a compatible format compatible with a position determining entity (PDE). Some independent position enhancement algorithms return output in the form of position information (typically, two- or three-dimensional coordinates), however, most PDEs only accept information in the form of pseudo-ranges. Thus, the present method provides a technique in which the advantages of an independent position enhancement algorithm are enjoyed, yet a compatible output is sent to the PDE.