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:
Apr. 24, 2012
Filed:
Nov. 24, 2008
Björn Norhammar, Stocksund, SE;
Michael Hultman, Enskede, SE;
Björn Norhammar, Stocksund, SE;
Michael Hultman, Enskede, SE;
Sony Ericsson Mobile Communications AB, Lund, SE;
Abstract
A wireless electronic arrangement configured to connect to an earphone arrangement may include a signal generator to generate an electric signal to be sent over the earphone arrangement; a measuring arrangement to make at least one measurement of the electric signal to determine a value indicating a current acoustic impedance of the earphone arrangement; a control unit to compare the determined value with a stored value indicating an operational acoustic impedance stored on a memory unit and, based on a result of the comparison, to select an operational mode of the wireless electronic arrangement based on the determined state of the earphone arrangement.