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:
Jul. 15, 2003
Filed:
Dec. 02, 1997
Applicant:
Inventor:
Joel Adams, Pflugerville, TX (US);
Assignee:
Siemens Information & Communication Networks, Inc., Boca Raton, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/40 ; H04B 1/38 ;
U.S. Cl.
CPC ...
H04B 1/40 ; H04B 1/38 ;
Abstract
A headset/headphone sensing jack ( ). A two-channel sensing circuit ( ) is provided which detects whether a headphone ( ) or headset ( ) is installed. By employing an impedance sensing circuit ( ), it is possible to use a single common 2.5 mm jack ( ) for both radio and telephony operation. Formerly, two separate jacks would be required for both functions. An electronic device ( ) according to the present invention is further capable of switching between AM/FM radio and telephone modes depending on whether a particular headpiece ( ) is installed.