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:
Nov. 11, 2008
Filed:
Mar. 11, 2004
Applicant:
Amit Goyal, Bangalore, IN;
Inventor:
Amit Goyal, Bangalore, IN;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01); H04M 1/00 (2006.01); H01H 47/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A detector circuit detects whether a headset is present (inserted) in a jack by measuring the impedance between the connection points of the jack. The detector circuit further determines the headset type (e.g., whether of cellular headset, stereo headset or stereo+cellular headset) by measuring the impedance between the connection points of the jack. Power consumption may be reduced by powering down components which determine headset type if the headset is determined not to be present. Additional power reduction is attained by checking for headset removal only periodically if the headset is determined to be present.