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. 11, 2008
Filed:
Feb. 03, 2006
Fomin Uladzimir, Minsk, BY;
Fomin Uladzimir, Minsk, BY;
Neotec Semiconductor Ltd., Hsinch Hsien, TW;
Abstract
A wake-up circuit includes a counter, a register circuit, a first logic circuit, an oscillator, a flip flop, and a second logic circuit. The wake-up circuit receives a standby signal to stop the oscillator working and to wait for the wake-up signal to reactivate the oscillator again. When the duration of the wake-up signal is shorter than an expected time of the counter, the oscillator stops working again and re-enters the saving mode. When the duration of the wake-up signal is longer than the expected time of the counter, the counter controls the flip flop to output a preset signal to the register circuit, and as a result that keeps the oscillator working even after the wake-up signal is removed by the first logic circuit operating, and then the second logic circuit operates with flip-flop to set the counter returning to a normal state to wait for a next standby signal to feed in.