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:
Apr. 22, 2014
Filed:
Aug. 31, 2012
Toyoaki Uo, Fukuoka-ken, JP;
Toyoaki Uo, Fukuoka-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a lock detection circuit includes an initial state response circuit. The initial state response circuit is configured to output a third control signal to delay lines and cause a charge pump to stop an output of a second control signal when a pulse width modulation signal is not input, the third control signal is configured to control a delay amount to cause a delay amount of an entire delay circuit to be within one selected from a range in which an OVER signal generation circuit is operable, a range in which an UNDER signal generation circuit is operable, and a range that is greater than an UNDER threshold and less than an OVER threshold.