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:
Jan. 09, 2001
Filed:
Aug. 25, 1998
Eric Romesburg, Chapel Hill, NC (US);
Patrik Lilja, Cary, NC (US);
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
The generation of an audio output sound from an electronic communications device includes monitoring a level of an electrical power supply for the electrical communications device, and adjusting an audio input signal responsive to changes of the level of the electrical power supply for the electronic communications device. The adjusted audio input signal is amplified, and an output sound is generated responsive to the adjusted and amplified audio input signal. In addition, an audio output signal can be generated responsive to received sound including an echo of the output sound, an estimate of the echo of the output sound can be generated using the adjusted audio input signal and a model of an echo path of the output sound, and the echo portion of the audio output signal can be reduced using this estimate.