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:
Dec. 11, 2001
Filed:
Oct. 09, 1998
Kazuichi Ooe, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention relates to a multicast transmission method which is capable of realizing a multicast function while maintaining the independence of each of nodes concurrently with minimizing the traffic on a communication network. In the multicast transmission method according to this invention, a data transmitting node, in which a multicast transmission request occurs, adds a multicast address to a data send message and then broadcasts the data send message plus multicast address to all the nodes, while each of the nodes receiving the multicast address refers to its own multicast table to decide whether or not a multicast address coincident with the received multicast address exists in the multicast table. If the same multicast address exists, the node makes a request for the transmission of data responding to the multicast transmission request toward the data transmitting node through the use of a basic communication function, so that the data is transmitted from the data transmitting node to the node making the data transmission request. This invention is applicable to communication networks employing a protocol such as TCP/IP (Transmission Control Protocol/Internet Protocol).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile