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:
Jul. 12, 2011
Filed:
Sep. 10, 2009
Scott D. Kulchycki, Mountain View, CA (US);
Scott D. Kulchycki, Mountain View, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A circuit includes an analog-to-digital converter configured to receive an analog input signal and generate first digital values at a first sampling rate. The first digital values have a first bit-width. The circuit also includes an interpolator configured to receive the first digital values and generate second digital values at a second sampling rate higher than the first sampling rate. The second digital values have a second bit-width equal to or greater than the first bit-width. The circuit further includes a digital filter configured to receive the second digital values and perform bit-width reduction in a recoverable manner to generate third digital values. The third digital values have a third bit-width less than the first and second bit-widths. The circuit could optionally include a recovery circuit configured to process the third digital values to generate recovered digital values at the first sampling rate. The recovered digital values have the first bit-width.