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. 08, 2012
Filed:
Feb. 28, 2009
Ihung Tu, Torrance, CA (US);
Lei Zhao, Torrance, CA (US);
Ashish Patel, Torrance, CA (US);
Tien VU, Torrance, CA (US);
Luoyi Ren, Torrance, CA (US);
Serge Orlov, Torrance, CA (US);
Ankur Bhatia, Torrance, CA (US);
Ihung Tu, Torrance, CA (US);
Lei Zhao, Torrance, CA (US);
Ashish Patel, Torrance, CA (US);
Tien Vu, Torrance, CA (US);
Luoyi Ren, Torrance, CA (US);
Serge Orlov, Torrance, CA (US);
Ankur Bhatia, Torrance, CA (US);
Alpine Electronics, Inc., Tokyo, JP;
Abstract
A method and apparatus for link promotion for a navigation system allows expansion of search in a lower layer to determine an optimum climbing point to an upper layer to search an optimum route. The link promotion procedure includes the steps of determining whether an upper link exists for a lower link, setting the upper link as a promoted link if such an upper link exists even if a climbing node point does not exist that connect the lower link and the upper link, and comparing a candidate normal route and a promoted route to find an optimum route.