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:
Jun. 12, 2001
Filed:
Oct. 08, 1998
Takeshi Shigeno, Hadano, JP;
Takashi Morikawa, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A data processing apparatus has a basic processing unit (BPU),a channel processor (CHP),message channel units (MCH),n, message channel receivers (MCHR),m connected respectively to the message channel units,n, and a structured external storage device (SES),which may be connected to a plurality of hosts via the message channel receivers,m and which includes a cache memory,for accommodating data shared by the hosts. Before issuing a synchronous instruction, a program issues an instruction notifying in advance the inventive apparatus of the intended use of hardware resources. When the hardware resources are reserved by the notifying instruction, the apparatus guarantees the subsequent execution of the synchronous instruction. Because synchronous instructions are always carried out, the system overhead is lowered.