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:
Mar. 31, 2009
Filed:
Mar. 23, 2001
James Thomas Edward Mcdonnell, Bristol, GB;
Andrew Thomas, Los Altos, CA (US);
Michael P. Spratt, Bristol, GB;
John Deryk Waters, Bath, GB;
Simon E. Crouch, Bristol, GB;
James Thomas Edward McDonnell, Bristol, GB;
Andrew Thomas, Los Altos, CA (US);
Michael P. Spratt, Bristol, GB;
John Deryk Waters, Bath, GB;
Simon E. Crouch, Bristol, GB;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Location data about a mobile entity () is provided in encrypted form by a location server () to a recipient that is one of the mobile entity () or a service system () usable by the mobile entity. The location data (P) is encrypted such that it can only to be decrypted using a secret available to a decryption entity () that is not under the control of the recipient. This permits location data (P) to be provided in a confidential manner to service systems () and also protects billing relationships between participants. A mechanism is also described for limiting the accuracy of decrypted location data (L) made available to a service system ().