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:
Jul. 07, 2015
Filed:
Dec. 08, 2011
Qutub Salman Syed, Fountain Valley, CA (US);
Jaime B. Colley, Laguna Niguel, CA (US);
Stefan Witanis, San Jose, CA (US);
Terence Douglas Macaulay, Oceanside, CA (US);
Qutub Salman Syed, Fountain Valley, CA (US);
Jaime B. Colley, Laguna Niguel, CA (US);
Stefan Witanis, San Jose, CA (US);
Terence Douglas Macaulay, Oceanside, CA (US);
CAMBRIDGE SILICON RADIO LIMITED, Cambridge, GB;
Abstract
The present invention uses a map database which is created with the view of optimization in terms of size and complexity, so that it can be easily embedded into a navigation chip. The optimized map database is referred to as a 'mini-map' database. The mini-map database easily integrates with the position calculation routine. The algorithm for position calculation includes a map-matching component, which is referred to as the 'mini-map-matching' (MMM) algorithm, which is implemented on the navigation chip. Application of the present invention includes any navigation system for vehicles and/or pedestrians. The navigation system may include an inertial sensor, such as a dead-reckoning (DR) sensor, for further improvement in calculated positional accuracy when satellite signals are degraded due to environmental factors.