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. 04, 2009
Filed:
Nov. 04, 2005
Lian-chun Xu, Singapore, SG;
Kok-soon Yeo, Singapore, SG;
Chee-keong Teo, Singapore, SG;
John Julius Asuncion, Singapore, SG;
Wai Keat Tai, Singapore, SG;
Lian-Chun Xu, Singapore, SG;
Kok-Soon Yeo, Singapore, SG;
Chee-Keong Teo, Singapore, SG;
John Julius Asuncion, Singapore, SG;
Wai Keat Tai, Singapore, SG;
Lite-On Technology Corp., Neihu, Taipei, TW;
Abstract
A system and method for demodulating amplitude modulated input signals uses two comparators and a charge pump circuit, which is positioned between the two comparators, to produce a demodulated signal of an amplitude modulated input signal. The two comparators and the charge pump circuit form a demodulating unit that may be a part of an infrared remote control receiver. The first comparator converts the input signal from a waveform to a pulse form. The charge pump circuit then converts the pulse signal into an integrated signal in a triangular pulse form. The second comparator converts the integrated signal from a triangular pulse form to a rectangular pulse form to produce the demodulated signal.