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.
Patent No.:
Date of Patent:
Feb. 14, 2012
Filed:
Dec. 22, 2009
Applicants:
Teruyuki Hasegawa, Kamifukuoka, JP;
Toru Hasegawa, Kamifukuoka, JP;
Inventors:
Teruyuki Hasegawa, Kamifukuoka, JP;
Toru Hasegawa, Kamifukuoka, JP;
Assignee:
KDDI Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/28 (2006.01); H04L 12/56 (2006.01); G06F 15/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
In order to distribute multicast packets, using different multicast addresses and avoiding fault points, a backup server is installed close to a master and converts backup multicast packets and sends them as master multicast packets to the client. At this time, backup multicast packets are delayed and sent while the delay is determined from an allowable retransmission time, a one-direction delay to the client, a time required to detect linkage problems, and a time required to establish backup paths and so on.