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. 07, 2010
Filed:
Sep. 28, 2007
Shunichi Ihara, Kawasaki, JP;
Yuichi Ogawa, Kawasaki, JP;
Terumasa Haneda, Kawasaki, JP;
Kazunori Masuyama, Kahoku, JP;
Shunichi Ihara, Kawasaki, JP;
Yuichi Ogawa, Kawasaki, JP;
Terumasa Haneda, Kawasaki, JP;
Kazunori Masuyama, Kahoku, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In response to a request from a central processing unit (CPU)(i.e., firmware) of a node, a transfer control unitof a direct memory access (DMA) controllertransmits a message and data to another discretionary nodeby way of a serial bus, a switchor the like. In this event, the firmware stores data to be transmitted, a message, and a descriptor thereof in memory. In the case of requesting the transmission of the message, the descriptor contains a flag indicating 'whether or not there is a need to wait for a response from the data transmission destination'. If the flag is set to ON, the transfer control unitnotifies the firmware of a simulated completion immediately instead of waiting for a completion response from the transmission destination node