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:
Sep. 10, 2013
Filed:
Nov. 02, 2010
Yi-lin Lee, Hsinchu Hsien, TW;
Bo-ju Chen, Hsinchu Hsien, TW;
Zhi-ren Chang, Hsinchu Hsien, TW;
Mstar Semiconductor, Inc., Hsinchu Hsien, TW;
Abstract
An audio volume control circuit includes a signal intensity calculating circuit for generating a first signal intensity value corresponding to a signal intensity corresponding to an audio channel data; a low-pass filter for filtering the first signal intensity to generate a second signal intensity value; an averaging unit for averaging the second signal intensity value and previous M−1 second signal intensity values to obtain a third signal intensity value, with M being a natural number greater than 1; a gain calculating circuit for obtaining an original gain value according to the third signal intensity value with reference to the adjustment condition; a buffer for temporarily storing the audio channel data; and an audio volume adjusting circuit for generating an adjustment gain value according to the original gain value to adjust the audio channel data stored in the buffer.