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:
Jun. 25, 2013
Filed:
Feb. 22, 2011
Wing Chi Stephen Chan, Hong Kong, CN;
Hing MO Jeff Lam, Hong Kong, CN;
Jun Pan, Shenzhen, CN;
Stephen Wai-yan Lai, Hong Kong, CN;
Xiaolong He, Shenzhen, CN;
Wai Kin Josh Cheng, Hong Kong, CN;
Wing Chi Stephen Chan, Hong Kong, CN;
Hing Mo Jeff Lam, Hong Kong, CN;
Jun Pan, Shenzhen, CN;
Stephen Wai-Yan Lai, Hong Kong, CN;
Xiaolong He, Shenzhen, CN;
Wai Kin Josh Cheng, Hong Kong, CN;
Solomon Systech Limited, Shatin, New Territories, HK;
Abstract
An illumination brightness control apparatus receives an input voltage from a light dimmer and produces a control signal to regulate a drive signal to a power conversion switch of a switching mode power converter. The apparatus includes a voltage conditioning circuit to condition the dimmer input voltage to provide a conditioned voltage signal; an ADC circuit to sample analog data of the conditioned voltage signal at a sampling rate that is high relative to a nominal variation rate of the dimmer input voltage and to provide digital data corresponding to the sampled analog data; a digital signal processing circuit to produce a running data average of the digital data; and a controller to produce a signal corresponding to the running data average as the control signal to regulate the drive signal.