Julio S Sanchez, Age 49Locke Mills, PA

6972719, Dec 6, 2005

Sep 30, 2004

10/954431

Charles B. Swope - Coral Springs FL, US
Jason A. Rapps - Tamarac FL, US
Julio A. Sanchez - Coral Springs FL, US
Daniel A. Tealdi - Hialeah FL, US

Motorola, Inc. - Schaumburg IL

G01S003/02

342450, 34235702

A location determination system () utilizes a low accuracy timing infrastructure () to synchronize a personal tracking device () having high accuracy timing location determination devices integrated therein. The PTD () includes a radio frequency (RF) location unit () and integrated sensors, such as altimeter (), GPS receiver () and inertial navigation unit (IMU) (). The RF location unit () receives a synchronization command from the low accuracy timing infrastructure () and provides timing data representing range information in response thereto. The range information is used by the high accuracy timing infrastructure () to compute updated X, Y, Z coordinates of the PTD ().

2004018, Sep 23, 2004

Feb 28, 2003

10/376999

Daniel Tealdi - Hialeah FL, US
Julio Sanchez - Coral Springs FL, US
Charles Swope - Coral Springs FL, US

H04M011/00

455/404100, 455/456100

A wireless communication system () employs a method () and apparatus for automatically tracking locations of wireless communication devices () in a geographic area, such as an ad hoc area of an emergency scene, that is divided into two or more zones (). A wireless communication device () or a host device (), determines a location of the wireless device (). The wireless device's location is then associated with one of the zones (). An indication () of a zone change is presented to a user of the wireless device and/or the host device (), as applicable, in the event that the wireless device's location reflects a transition of the device from one zone to another. Alternatively, each wireless device () might be associated with a corresponding group, such as a fire department, and the zone change indication might include an identifier () of the wireless device's group.