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. 20, 2016
Filed:
Oct. 01, 2014
Applicant:
Jeffrey W. Moore, West Barnstable, MA (US);
Inventor:
Jeffrey W. Moore, West Barnstable, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A63B 71/00 (2006.01); H04R 1/10 (2006.01); A63B 24/00 (2006.01); A63B 22/00 (2006.01); A63B 22/02 (2006.01); A63B 22/04 (2006.01); A63B 22/06 (2006.01); A63B 22/20 (2006.01);
U.S. Cl.
CPC ...
H04R 1/1041 (2013.01); A63B 22/0076 (2013.01); A63B 22/02 (2013.01); A63B 22/04 (2013.01); A63B 22/0605 (2013.01); A63B 22/201 (2013.01); A63B 24/00 (2013.01); H04R 2420/05 (2013.01);
Abstract
Described is a circuit arrangement for detection of a tone whose presence indicates insertion of a headphone plug into a jack. The circuit includes a receptacle having contacts configured to receive a plug inserted into the receptacle, a current sense circuit, an amplifier coupled to the current sense circuit and a band pass filter coupled to an output of the amplifier, the band pass filter configured to pass a signal having a frequency in a range of about 2 Hz to 20 Hz. Circuitry converts the passed signal into a digital signal to provide an input signal to a controller to indicate that a headphone plug was inserted into the receptacle.