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. 28, 2013
Filed:
Mar. 07, 2011
Yeongha Choi, Anyang-si, KR;
Jin Ho OH, Yongin-si, KR;
Min Soo Kim, Gwangmyeong-si, KR;
Jae-hee Won, Seoul, KR;
Yeongha Choi, Anyang-si, KR;
Jin Ho Oh, Yongin-si, KR;
Min Soo Kim, Gwangmyeong-si, KR;
Jae-Hee Won, Seoul, KR;
Neofidelity, Inc., Seoul, KR;
Abstract
A power supply circuit including a voltage regulator and a headphone driving circuit employing the same are disclosed. In accordance with the present invention, the power supply circuit may provide stable power supply to the amplifier since the power supply circuit generates the constant voltage +Vreg and the constant voltage −Vreg from +VDD robust to stronger than a power noise, and the balanced signal path for isolating the noise of the input signal to be amplified is not required, thereby simplifying the constitution of the circuit.