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:
Feb. 05, 2008
Filed:
Mar. 30, 2006
Luciano Zoso, Chandler, AZ (US);
Allan P. Chin, Chandler, AZ (US);
David P. Lester, Phoenix, AZ (US);
Luciano Zoso, Chandler, AZ (US);
Allan P. Chin, Chandler, AZ (US);
David P. Lester, Phoenix, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A variable interpolator () has an interpolation factor L for performing an interpolation of an input signal (), where L is variable and includes a minimum value. The variable interpolator includes a differentiator (-), a chopper (), and an integrator (-). The differentiator (-) is responsive to a signal on the differentiator input for performing a differentiator portion of the interpolation and for providing a differentiator result signal (). The chopper is coupled with the differentiator for chopping the differentiator result signal as a function of the minimum value of L, wherein for an interpolator input signal that contains non-uniformly sampled signals in which there exists at least one sample of a shortest duration and at least one sample of a duration that extends beyond the shortest duration, the minimum value of L corresponds to the duration of the sample of shortest duration, and wherein for an interpolator input signal that contains uniformly sampled signals in which the samples are of a fixed duration, the minimum value of L corresponds to the fixed duration. The integrator is responsive to the chopped differentiator result signal for performing an integrator portion of the interpolation and for providing an integrator result signal, corresponding to an output () of the variable interpolator.