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. 25, 2008
Filed:
Mar. 02, 2006
Chun-yao Laio, Hsinchu, TW;
Yu-ren Chen, Hsinchu, TW;
Chun-Yao Laio, Hsinchu, TW;
Yu-Ren Chen, Hsinchu, TW;
Holtek Semiconductor Inc., Hsinchu, TW;
Abstract
Disclosed is an improved circuit and method for generating a power on reset signal, the circuit being a two-stage circuit comprising a delay-stage circuit and an output-stage circuit. The delay-stage circuit delays a time for a power on reset signal generated in the output-stage circuit changing from low to high, so that a power voltage having a low rising speed may be normally reset. Further, the two stages provide charging paths and discharging paths so that the power on reset signal may be prevented from changing from high to low when it has changed from low to high, when noises are presented on the power voltage.