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:
Apr. 28, 2009
Filed:
Jan. 26, 2006
Fuminori Sai, Kanagawa, JP;
Naoyuki Minami, Kanagawa, JP;
Hiroshi Kawanobe, Kanagawa, JP;
Hidenobu Hanami, Kanagawa, JP;
Fuminori Sai, Kanagawa, JP;
Naoyuki Minami, Kanagawa, JP;
Hiroshi Kawanobe, Kanagawa, JP;
Hidenobu Hanami, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlans B.V., Amsterdam, NL;
Abstract
Embodiments of the invention prevent erroneous writing/readout onto/from magnetic disks or other recording disks, even when data transfer between a controller such as an HDC, and a channel such as an R/W channel, and the read/write operation performed by the channel do not match each other in timing. In one embodiment, an HDC/MPU outputs to an R/W channel a starting instruction for data transfer to/from a head, and data that indicates data length of data to be transferred. In response to the data transfer starting instruction from the HDC/MPU, the R/W channel starts transferring, to/from the head, recorded data of the data length notified from the HDC/MPU.