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. 29, 2013
Filed:
Jan. 05, 2009
Ludovic Oddoart, Frouzins, FR;
Berengere Le Men, Tournefeuille, FR;
Ludovic Oddoart, Frouzins, FR;
Berengere Le Men, Tournefeuille, FR;
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
Amplifier circuitry comprising a class-D amplifier for amplifying an audio input signal. The amplifier circuitry comprises sigma-delta modulation logic arranged to receive the audio input signal and to generate a modulated signal representative of the audio input signal, and an output stage arranged to generate an output signal for the amplifier circuitry. The amplifier circuitry further comprises finite impulse response, filter logic operably coupled between the modulation logic and the output stage, and having at least one zero in its transfer function arranged to substantially pass signal components within the modulated signal occurring at frequencies less than the at least one zero and to attenuate signal components within the modulated signal at frequencies greater than the at least one zero.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile