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:
Jan. 19, 1999
Filed:
Dec. 06, 1995
Fujitsu Limited, Kawasaki, JP;
Abstract
One CKD track on a direct-access storage device is divided into a plurality of fixed-length FBA blocks, only a home address HA of the CKD track and a record R0 having a CKD format are recorded in the leading FBA block, and each field (a COUNT field, KEY field and DATA field) of records R1, R2, . . . having the CKD format is recorded in the other FBA blocks. This arrangement is such that even if a format-write processing instruction for format-write from the record R1 is received from a host device, a disk control unit will not read the FBA block of HA/R0 out to a cache memory and will read out only FBA blocks from record R1 onward. As a consequence, write processing from record R1 onward can be performed in memory with ease and format-write processing can be executed at high speed.