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:
Oct. 22, 2019

Filed:

Jul. 21, 2016
Applicant:

Yoshiyuki Toda, Kanagawa, JP;

Inventor:

Yoshiyuki Toda, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/12 (2006.01); H04L 12/18 (2006.01);
U.S. Cl.
CPC ...
H04L 61/2069 (2013.01); H04L 12/1886 (2013.01); H04L 61/609 (2013.01); H04L 61/2076 (2013.01);
Abstract

A terminal includes a unit configured to send, to a multicast address distribution server, an assignment request including attribute information of the terminal, so as to request assignment of a multicast address enabling identification of a terminal group; and a unit configured to set, in response to the assignment of the multicast address, the multicast address in the terminal and make the terminal to participate in the terminal group corresponding to the multicast address. When a change in the attribute information is detected, the terminal reissues a second assignment request including the attribute information after change, so as to request the multicast address distribution server for a new multicast address and change terminal group for participation according to change in the attribute information.


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