06148261 is referenced by 502 patents and cites 40 patents.

A location tagged data provision and display system. A personal communication device (PCD) with electromagnetic communication capability has a GPS receiver and a display. The PCD requests maps and location tagged data from data providers and other for display on the PCD. The data providers respond to requests by using searching and sorting schemes to interrogate data bases and then automatically transmitting data responsive to the requests to the requesting PCD.

Title
Personal communication system to send and receive voice data positioning information
Application Number
8/879955
Publication Number
6148261
Application Date
June 20, 1997
Publication Date
November 14, 2000
Inventor
Michael Kent
Garden Grove
CA, US
John Dinkel
Irvine
CA, US
Michael L Obradovich
San Clemente
CA, US
Agent
Christie Parker & Hale
Assignee
American Calcar
DE, US
IPC
G01C 15/00
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