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:
Dec. 15, 2009
Filed:
May. 08, 2007
Wen-chi Wang, Yun-Lin Hsien, TW;
Wen-Chi Wang, Yun-Lin Hsien, TW;
Realtek Semiconductor Corp., HsinChu, TW;
Abstract
A sigma-delta modulator and an output rate reduction method are disclosed. The sigma-delta modulator comprises an integrator, an analog-to-digital converter, and a controller. An input signal is received by the integrator to generate an integrated signal. The integrated signal is then converted by the analog-to-digital converter into a digital modulation signal. The input signal is received by the controller to calculate an input signal power. The analog-to-digital converter can be controlled by the controller based on a predetermined power value and a sum of the input signal power and a total quantization error power. By the way mentioned above, the out rate of the sigma-delta modulator is reduced.