Title:
移動体情報共有システム
Document Type and Number:
Japanese Patent JP4286730
Kind Code:
B2
Abstract:
A mobile unit information sharing system with which it is possible by wireless communications and without providing a communications control station to share not only voice data but also position information of multiple mobile stations and business information such as images formed in the course of business and instructions and the like. A base station and multiple mobile stations each, by a time-sharing synchronous wireless modem device, acquire position information for themselves and time information via a GPS antenna and transmit their station position information via a wireless installation using a wireless frequency common to all the stations and with timing determined, on the basis of the acquired time information, so that their station position information does not collide with position information transmissions from other stations.
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Inventors:
Yasumasa Nonoyama
Maeda Yoshiko
Maeda Yoshiko
Application Number:
JP2004194259A
Publication Date:
July 01, 2009
Filing Date:
June 30, 2004
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04W4/02; G01S5/00; G01S19/48; G08G1/13; H04M11/00; H04W4/06; H04W8/08; H04W28/00; H04W64/00; H04W74/02
Domestic Patent References:
JP8005394A | ||||
JP2001224072A | ||||
JP2002077199A | ||||
JP7152997A | ||||
JP2003141687A | ||||
JP7079204A | ||||
JP2003158762A |
Attorney, Agent or Firm:
Masuo Oiwa
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami
Toshihide Kodama
Takenaka Ikuo
Keigo Murakami