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:
May. 05, 2009
Filed:
Nov. 02, 2006
Young-suk Song, Suwon-si, KR;
Hee-soo Lee, Suwon-si, KR;
Hae-kwang Park, Suwon-si, KR;
Zhun-woo Kim, Seoul, KR;
Young-suk Song, Suwon-si, KR;
Hee-soo Lee, Suwon-si, KR;
Hae-kwang Park, Suwon-si, KR;
Zhun-woo Kim, Seoul, KR;
Samsung Electronics Co., Ltd, Suwon-si, KR;
Abstract
A multi-channel digital amplifier system to generate a pulse width modulation (PWM) signal having a different switching frequency in each channel, and a signal processing method thereof. The digital amplifier system includes a PWM conversion unit to convert a plurality of audio signals on a plurality of channels into low output power PWM signals having switching frequencies that are different from each other, a switching circuit unit to amplify the plurality of low output power PWM signals to a plurality of high power output PWM signals on the respective channels, and a filter unit to restore the plurality of high output power PWM signals to a plurality of analog audio signals on the respective channels.