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:
Mar. 17, 2015
Filed:
Aug. 23, 2013
Kabushiki Kaisha Toshiba, Tokyo, JP;
Richard M. Ehrlich, Saratoga, CA (US);
Mine Wonkyung Budiman, Livermore, CA (US);
Eric R. Dunn, Cupertino, CA (US);
Annie Mylang Le, San Jose, CA (US);
Fernando Anibal Zayas, Rangiora, NZ;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A data storage device that includes a magnetic storage device and a non-magnetic nonvolatile storage device that measures a hit rate of read/write commands that result in accesses to the non-magnetic nonvolatile storage device, and adjusts a length of a time period, such as an idle time, based on the hit rate. The duration of the time period can be set each time the magnetic storage device is accessed. Upon expiration of the time period, if the magnetic storage device has not yet been accessed, the magnetic storage device is changed from a higher power consumption state to a lower power consumption state.