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.

Date of Patent:
Dec. 29, 2009

Filed:

Feb. 01, 2008
Applicants:

Soichi Isono, Kanagawa, JP;

Minoru Tsukada, Kanagawa, JP;

Tomoki Oura, Kanagawa, JP;

Koji Takahashi, Kanagawa, JP;

Inventors:

Soichi Isono, Kanagawa, JP;

Minoru Tsukada, Kanagawa, JP;

Tomoki Oura, Kanagawa, JP;

Koji Takahashi, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 20/10 (2006.01); G11B 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

Among other disclosed subject matter, a magnetic disk controller includes an interface that receives and transmits data to be written into a magnetic disk. The magnetic disk controller includes a first buffer and a second buffer each of which temporarily stores data that is to be written into at least one sector of the magnetic disk. The magnetic disk controller includes an encoding unit that encodes the data stored in any of the first buffer and the second buffer into data representing a signal to be applied to the magnetic disk. A data width M between the encoding unit and the first and second buffers is at least equal to twice a data width N between the interface and the first and second buffers.


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