Apparatus and method for spectrally shaping a reference...

Details Apparatus and method for spectrally shaping a reference... Apparatus and method for spectrally shaping a reference...

2006-09-06

2008-05-27

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C327S147000

Reexamination Certificate

active

07379005

ABSTRACT:
Clock signal jitter detection circuit for detecting a clock signal jitter in a reference clock signal (CLK), having a switched-capacitor reference digital-analogue converter (15) which is clocked by the reference clock signal (CLK) and which converts a digital input signal into a first current, a current-controlled digital-analogue converter (16) which is clocked by the reference clock signal (CLK) and which converts the digital input signal into a second current, and having a current integrator (18) which integrates the difference between the first current and the second current to produce a signal which indicates the clock signal jitter in the reference clock signal (CLK).

REFERENCES:
patent: 4330759 (1982-05-01), Anderson
patent: 6044124 (2000-03-01), Monahan et al.
patent: 6111532 (2000-08-01), Hirano et al.
patent: 6463092 (2002-10-01), Kim et al.
patent: 6987408 (2006-01-01), Kim
patent: 10327621 (2005-01-01), None
patent: 2001311755 (2001-11-01), None
German Office Action dated May 9, 2006.

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