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:
Feb. 16, 2016

Filed:

Jun. 27, 2013
Applicant:

Panasonic Corporation, Osaka, JO;

Inventors:

Masahiro Nakamura, Hyogo, JP;

Takuji Maeda, Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/24 (2006.01); G06F 21/60 (2013.01); G06F 21/62 (2013.01); G06F 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 13/24 (2013.01); G06F 21/604 (2013.01); G06F 21/6218 (2013.01); G06F 3/0637 (2013.01);
Abstract

The access device comprises a memory and a device controller configured to send and receive a data control right between the data recording device and a central controller provided in a host device. When having received a request to interrupt transfer of data from the central controller while data is being transferred from the data recording device, the device controller releases the data control right from the data recording device, and has the data recording device determine whether or not mismatching has occurred in file system management information for data stored in the memory. The device controller then returns the data control right to the data recoding device when it is determined that mismatching has occurred in the file system management information. The data recording device releases the data control right after eliminating the mismatching in the file system management information according to the returned data control right.


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