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:
Aug. 25, 2020
Filed:
Aug. 06, 2019
Applicant:
Innodisk Corporation, New Taipei, TW;
Inventor:
Chih-Chieh Kao, New Taipei, TW;
Assignee:
Innodisk Corporation, New Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/22 (2006.01); G11C 7/24 (2006.01);
U.S. Cl.
CPC ...
G11C 16/22 (2013.01); G11C 7/24 (2013.01);
Abstract
The invention provides a write protection circuit, which is applied to a data storage device. The data storage device comprises a controller and a plurality of flash memories. The flash memories comprise a write protection pin. The write protection circuit comprises a fuse and a switch. When the switch is operated in a turned on state, the fuse is directly grounded via the switch and therefore is burned, and a signal on the write protection pin of the flash memories becomes a signal with a low-level state so that the flash memories of the data storage device will be permanently inhibited to be written.