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. 09, 2014
Filed:
Feb. 26, 2009
Hajime Yoshino, Edogawa, JP;
Hajime Yoshino, Edogawa, JP;
Pioneer Corporation, Kanagawa, JP;
Abstract
A speaker determination device determines a polarity of a speaker connected to output terminals. Test sound is outputted to an acoustic space via the connected speaker and is collected by a microphone. A reference signal is generated based on the test signal. A polarity determining unit compares predetermined frequency range components of the microphone signal obtained by the microphone and the reference signal, and determines the polarity of the speaker, i.e., whether the speaker is connected in positive phase or in negative phase.
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