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. 27, 1989
Filed:
Apr. 21, 1987
Tadaaki Isobe, Hadano, JP;
501 Hitachi, Ltd., Tokyo, JP;
Abstract
A storage control device is connected between a number of access request control units and a storage device including a number of memory units. The apparatus includes a number of transmission units, each corresponding to one of the access request control unit. Each transmission unit receives access requests from its associated access request control unit and divides the access requests into a number of groups in the order of issuance from the access request control units. The transmission units also add access request identifiers to the access requests in each group and transmit a number of access requests with access request identifiers to a number of access request deciders. Each access request decider is associated with one of the independently accessible memory units. Each decider receives the access requests directed to its associated memory unit and serially supplies the requests to that memory unit. Additionally, a detection unit is connected to all of the access request deciders in order to detect that all access requests having the same access request identifier, as assigned by the identifier transmission units, have been transmitted from the access request deciders to the corresponding memory units.