Method and system for adjustable sample rate conversion

Details Method and system for adjustable sample rate conversion Method and system for adjustable sample rate conversion

2007-12-18

2007-12-18

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

C341S143000

Reexamination Certificate

active

11176417

ABSTRACT:
Described herein is a method and system for sampling rate conversion. A clamped cubic spline interpolator (CCSI) may be utilized to interpolate or decimate a source signal to provide samples at times based on a sink rate. The source clock and sink clock may be driven by independent oscillators, and may therefore drift independently. A rate tracking algorithm may monitor the relative drift and adjust the conversion of the source signal to track the sink rate.

REFERENCES:
patent: 4725972 (1988-02-01), Gockler
patent: 5732107 (1998-03-01), Phillips et al.
patent: 5880980 (1999-03-01), Rothacher et al.
patent: 5916301 (1999-06-01), Rothacher
patent: 6061704 (2000-05-01), Ostman et al.
patent: 6570935 (2003-05-01), Sugita
patent: 6870492 (2005-03-01), Jensen
patent: 2005/0207480 (2005-09-01), Norsworthy et al.

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