Browse Prior Art Database

Extended Capability Location System

IP.com Disclosure Number: IPCOM000004639D
Original Publication Date: 2001-Mar-08
Included in the Prior Art Database: 2001-Mar-08

Publishing Venue

Motorola

Related People

Authors:
David P. Hoffman

Abstract

Abstract: The ability to determine location of user through a personal communication device offers significant improvements in public safety, enhanced user functionality resulting in increased market acceptance/profitability. Conventional methods require the use of gyroscopes in order to establish this functionality but are not cost competitive. Recent advances (Vehicle Location and Navigation Systems: Yilin Zhao 1997) have eliminated the gyroscope but are limited to applications where device orientation is fixed (Autos change location but generally are parallel to the road and are not significantly inclined). The Extended Capability Location System (ECLS) is intended as a low cost answer to obtaining positional updates where external access is limited and mobility is required. The device achieves this technical and cost advantage by avoiding use of a gyro through the use of accelerometer and compass electronic components currently available. The functional advantages include function independent of device orientation, an integrated elevation capability, stand alone capability (no external data) and the ability to couple sources not usable by other technologies and current or future location data streams to minimizing CEP. This represents a significant step forward from a cost and capability standpoint.