Method for generating wander or wander sequences

Details Method for generating wander or wander sequences Method for generating wander or wander sequences

2005-01-25

2005-01-25

Pascal, Robert (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

C702S069000, C375S226000, C331S016000

Reexamination Certificate

active

06847264

ABSTRACT:
According to the invention, a frequency demultiplication circuit serves to generate wander or wander sequences having frequencies of less than 10 Hz and, in particular, less than 1 Hz. Said frequency demultiplication circuit receives, on the input side, pulse signals of a relatively high frequency and has two counter arrays (C11, C12; C21, C22) and a phase comparator circuit (COMg) that is connected to the outputs of said counter arrays. The counting cycle of one counter array (C22) is modified with regard to the counting cycle of the other counter array (C12) within a period of the respective wander to be generated or of the respective wander sequence to be generated according to a desired progression of the wander or of the wander sequence.

REFERENCES:
patent: 3885138 (1975-05-01), Bates
patent: 4349887 (1982-09-01), Crowley
patent: 5757652 (1998-05-01), Blazo et al.
patent: 6621860 (2003-09-01), Yamaguchi et al.
patent: 6795496 (2004-09-01), Soma et al.
patent: 0 828 343 (1998-03-01), None
“The Control of Jitter and Wander Within Digital Networks Which are Based on the 2048kbit/s Hierarchy,” ITU-T Recommendation G.823, International Telecommunication Union, 1993.

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