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:
Nov. 23, 1999
Filed:
Nov. 20, 1995
Akira Mashimo, Tokorozawa, JP;
Seiichi Ohnuki, Fuchu, JP;
Gui Changhao, Iruma, JP;
Hidehiko Murata, Niiza, JP;
Kohji Yamana, Iruma, JP;
TEAC Corporation, Tokyo, JP;
Abstract
A rotating disk data storage device havIng a buffer in the form of a semiconductor memory for temporarily storing data supplied from a host computer prior to transfer to a disk drive. For most efficient data transfer from buffer to disk, the storage device has a microprocessor controller which is preprogrammed to compute the average, or weighted average, of the time intervals at which at least three, preferably eight, latest consecutive data blocks are delivered from the host, the average being updated with the reception of each new data block from the host. The data is transferred from buffer to disk at time intervals each determined by multiplying the latest average time interval by a preselected coefficient. Data transfer from buffer to disk also occurs when the time interval between any two consecutive data blocks exceeds a predetermined limit, or when the amount of data stored in the temporary memory exceeds a predetermined limit.