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. 23, 2016
Filed:
Nov. 24, 2014
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Kotaro Watanabe, Chiba, JP;
Makoto Mitani, Chiba, JP;
SEIKO INSTRUMENTS INC., Chiba, JP;
SII SEMICONDUCTOR CORPORATION, Chiba, JP;
Abstract
The present invention provides a data reading device capable of preventing erroneous writing during an operation of reading data from a non-volatile memory element. The data reading device includes a dummy reading circuit provided with a non-volatile memory element, the writing voltage of which is lower than that of a non-volatile memory element of a data reading circuit, and a state detection circuit that detects a written state of the non-volatile memory element of the dummy reading circuit. Upon detection of erroneous writing to the non-volatile memory element of the dummy reading circuit during a data reading operation, the data reading operation is immediately terminated.