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:
Jun. 26, 2001
Filed:
Aug. 31, 1998
Toru Ito, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A navigation controller includes, in addition to a main CPU in the form of a general purpose CPU, a media processor having a VLIW structure or an SIMD structure. The main CPU controls ordinary navigation actions and causes the media processor to perform a route calculation requiring product-sum operations. The high-speed calculation ability of the media processor is utilized, remarkably increasing the route calculation speed. Preferably, the media processor executes both route calculation processing and graphics processing by time sharing. The time sharing ratio is varied in accordance with the state of navigating action so that the calculation time can be reduced to a minimum while an appropriate image display is maintained.