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. 04, 2018
Filed:
Oct. 19, 2017
Applicant:
Realtek Semiconductor Corp., Hsinchu, TW;
Inventors:
Assignee:
REALTEK SEMICONDUCTOR CORP., Hsinchu, TW;
Primary Examiner:
Int. Cl.
CPC ...
H04S 1/00 (2006.01); H03G 3/30 (2006.01); H04S 7/00 (2006.01);
U.S. Cl.
CPC ...
H04S 1/005 (2013.01); H03G 3/3005 (2013.01); H04S 7/308 (2013.01); H04R 2420/09 (2013.01);
Abstract
Provided herein are a headphone amplifier circuit for a headphone driver, an operation method thereof, and a universal serial bus (USB) interfaced headphone device using the same. The output stage of the headphone amplifier circuit is improved to have a differential output structure so as to effectively solve the crosstalk issue and increase the isolation between the left and the right channels such that the audio content presents a spatial perception and a distance perception more specifically.