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. 02, 2014
Filed:
Jan. 18, 2012
Hirotoshi Tsuchiya, Iwata, JP;
Shinji Yaezawa, Iwata, JP;
Hirotoshi Tsuchiya, Iwata, JP;
Shinji Yaezawa, Iwata, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A dynamic range compression circuit includes an attenuator that attenuates a signal at a predetermined node in an amplifier to reduce a gain of the amplifier and a gain controller that reduces the gain of the amplifier by the attenuator so that an amplitude of an output signal of the amplifier becomes an arbitrary output limit voltage in a case where an input signal having the same amplitude as that of an input-stage maximum voltage of the amplifier is input into the amplifier, and increases the gain of the amplifier by reducing a degree of attenuation of the attenuator according to a decrease of the amplitude of the input signal of the amplifier from the input-stage maximum voltage in a case where the amplitude of the input signal of the amplifier is smaller than the input-stage maximum voltage.