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:
Mar. 06, 2012
Filed:
Jan. 11, 2007
Takuya Tamaru, Hamamatsu, JP;
Katsuichi Osakabe, Hamamatsu, JP;
Takuya Tamaru, Hamamatsu, JP;
Katsuichi Osakabe, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A light-emission responder can respond to input of sound, realizes versatility of response, and can be applied to various use forms. A microphone () converts a sound wave into an electric signal. An amplifying section () amplifies the electric signal and outputs it to an AGC section (). The AGC section () adjusts the amplitude of the electric signal output from the amplifying section (). A filter section () outputs an electric signal in a frequency band fout of the amplitude-adjusted electric signal to a comparing section (). The comparing section () compares the input electric signal with a reference signal. If the voltage of the electric signal passing through the filter section () is higher than the reference voltage, the comparing section () outputs a signal 'H'. When a signal 'H' is output from the comparing section (), a drive section () allows a light-emitting element () to emit light. A light-emission response output section () is connected to the drive section (). When driven by the drive section (), the light-emission response output section () outputs a radio wave of a predetermined frequency.