The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 16, 2007

Filed:

Dec. 24, 2002
Applicants:

Tosaku Tanada, Hino, JP;

Kentaro Nagahama, Oume, JP;

Hiroshi Matsuya, Hachiouji, JP;

Takayasu Aoki, Machida, JP;

Toshiya Tamura, Fuchu, JP;

Inventors:

Tosaku Tanada, Hino, JP;

Kentaro Nagahama, Oume, JP;

Hiroshi Matsuya, Hachiouji, JP;

Takayasu Aoki, Machida, JP;

Toshiya Tamura, Fuchu, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 7/20 (2006.01); H04B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The positional relationship between a master terminal and a slave terminal and the positional relationship of the slave terminal with the master terminal and with other slave terminals are measured, and a slave terminal subject to switching to master terminal is selected using the positional relationship. A network is then reconstructed with the slave terminal subject to switching selected in this manner as the new master terminal, and as a result the terminals forming the network prior to switching are prevented from falling outside of the communication range of the new master terminal and short range radio communication is maintained with the same terminals as those prior to switching.


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