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:
May. 15, 2012
Filed:
Jun. 17, 2009
Applicant:
Laurent Le-faucheur, Antibes, FR;
Inventor:
Laurent Le-Faucheur, Antibes, FR;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/36 (2006.01); G08B 6/00 (2006.01); G09B 21/00 (2006.01); H03K 17/94 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tactile input to a system having a speaker located in an enclosure with an audio port can be detected by generating a sound wave in response to a signal and sensing the phase relationship between the current phase and the voltage phase of the signal. While the audio port is open a baseline current and voltage phase difference is established. When the audio port is obstructed by a finger touch, the current and voltage phase difference is altered in response to the obstruction. While the altered phase difference is detected, a tactile event is indicated.