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:
Jan. 08, 2013
Filed:
Jun. 12, 2007
Applicants:
Daniel H. Greene, Sunnyvale, CA (US);
Juan Liu, Milpitas, CA (US);
James E. Reich, San Francisco, CA (US);
Inventors:
Daniel H. Greene, Sunnyvale, CA (US);
Juan Liu, Milpitas, CA (US);
James E. Reich, San Francisco, CA (US);
Assignee:
Palo Alto Research Center Incorporated, Palo Alto, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08G 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
One embodiment of the present invention provides a system that hierarchically groups principals to facilitate collision warning. During operation, the system obtains information on a number of principals and constructs one or more first-level groups of principals. Within a first-level group, the system constructs one or more second-level groups, thereby facilitating an assessment of probability of collision between a second-level group and a primary principal.