Noise shaper for shaping a power spectral density of an...

Details Noise shaper for shaping a power spectral density of an... Noise shaper for shaping a power spectral density of an...

2007-12-11

2007-12-11

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from differential codes

C341S050000

Reexamination Certificate

active

11258858

ABSTRACT:
A noise shaper for shaping a power spectral density of an input signal which consists of signal intervals, wherein each signal interval has a corresponding signal amplitude being constant for a variable interval duration time of the signal interval, said noise shaper comprising a calculation unit having at least one serial connected integrator wherein each integrator calculates an integrated signal of different order from said input signal, and a weighting unit for weighting each integrated signal with a corresponding adjustable weighting coefficient according to a noise transfer function.

REFERENCES:
patent: 5144308 (1992-09-01), Norsworthy
patent: 5598158 (1997-01-01), Linz
patent: 5608400 (1997-03-01), Pellon
patent: 5719573 (1998-02-01), Leung et al.
patent: 6005505 (1999-12-01), Linz
patent: 6414613 (2002-07-01), Midya et al.
patent: 6744392 (2004-06-01), Melanson

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