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. 10, 2013
Filed:
Sep. 18, 2009
Yoshihiro Toyohara, Hadano, JP;
Tetsuhiro Goto, Hadano, JP;
Megumu Hasegawa, Hadano, JP;
Takeshi Shigeno, Hadano, JP;
Yoshihiro Toyohara, Hadano, JP;
Tetsuhiro Goto, Hadano, JP;
Megumu Hasegawa, Hadano, JP;
Takeshi Shigeno, Hadano, JP;
Hitachi Ltd., Tokyo, JP;
Abstract
In a data processing system which runs a plurality of operating systems, a channel device can be shared by the plurality of operating systems. In addition, a channel device which supports port multiplexing can also be shared by a plurality of operating systems. The channel device includes a plurality of IDs each indicating that the channel device is a medium for performing input/output processing, and an input/output processing controller for assigning one operating system to each of the IDs, and controlling a data transfer independently for each ID to control a plurality of data transfers. Further, in a channel device which has a plurality of ports, an input/output processing controller is provided for assigning an operating system to each of the ports, and transferring data independently for each port to control the plurality of ports.