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:
Nov. 27, 2012
Filed:
Jan. 19, 2005
Takashi Nomura, Zama, JP;
Takashi Nomura, Zama, JP;
Xanavi Informatics Corporation, Zama-shi, JP;
Abstract
A search data update system includes a navigation apparatus that uses search data and a data providing center that provides update data for updating the search data to the navigation apparatus. The navigation apparatus reads a search data main body constituted with search tree data and a plurality of sets of substance data each specified based upon the search tree data from a recording medium. The data providing center provides the update data to be used to update the search data to the navigation apparatus. The update data are provided in units of individual sets of substance data and include attached thereto information to be used in a search in correspondence to each set of substance data. Upon obtaining the update data from the data providing center, the navigation apparatus stores the obtained update data into a nonvolatile memory separately from the search data main body.