2002-221563 is referenced by 5 patents.

PROBLEM TO BE SOLVED: To always provide effective and newest GPS assist information without requiring a communication expense from an owner of a GPS position detection device.SOLUTION: This device is equipped with a voice conversation processing part 1c for executing bidirectional voice conversation between calling from a conversation terminal 3a and a called communication terminal 3a, a GPS positioning operation processing part 1a for processing GPS assist data 2a transmitted from a GPS assist server 2 connected on a communication network, and a voice/data processing part 1d for distributing packet data including a voice signal for conversation and packet data including the GPS assist data 2a. The GPS positioning operation processing part 1a has a constitution for receiving the GPS assist data taken out by the voice/data processing part 1d at the conversation time with the conversation terminal 3a, and re-memorizing the data periodically in a memory.

Gps position detection device and gps position detection system
Application Number
Publication Number
Application Date
January 26, 2001
Publication Date
August 9, 2002
Kawamoto Kazuhiro
Kuramae Kenji
Okuno Kenji
Tsujimoto Ikuo
Fukuda Masahito
Suefuji Takuya
Yamada Wakio
Suzuki Junichi
Satake Tei
Sakamoto Koji
Matsushita Electric Works
G01S 05/14