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:
Oct. 09, 2007
Filed:
Sep. 29, 2005
Michael Mills, Austin, TX (US);
Marius Goldenberg, Austin, TX (US);
Yan Zhou, Austin, TX (US);
Jeffrey Whaley, Dripping Springs, TX (US);
Michael Mills, Austin, TX (US);
Marius Goldenberg, Austin, TX (US);
Yan Zhou, Austin, TX (US);
Jeffrey Whaley, Dripping Springs, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
In one embodiment, a subscriber line interface circuit includes circuitry to generate metering pulses for insertion onto a subscriber line. The circuitry includes a cascaded digital-to-analog converter (DAC) structure including a first DAC to convert a digital sine wave into an analog representation, a second DAC to multiply the analog representation with a ramp value to obtain an unscaled output, and a third DAC to multiply the unscaled output with a gain value to generate a metering pulse.