Timeshared jitter attenuator in multi-channel mapping...

Details Timeshared jitter attenuator in multi-channel mapping... Timeshared jitter attenuator in multi-channel mapping...

2006-09-29

2008-11-25

Tran, Khai (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

Reexamination Certificate

active

07457390

ABSTRACT:
A timeshared data tributary mapping system and method are provided for mapping information into Synchronous Payload Envelopes (SPEs). The method buffers data from a plurality of tributaries and stores current buffer-fill information at a rate of about one tributary per Fsys clock cycle. An accumulation of buffer-fill information for the plurality of tributaries is updated with current buffer-fill information every Fsys clock cycle. The accumulation of buffer-fill information for the plurality of tributaries is sampled at a sample rate frequency (Fsample), where Fsample<Fsys. The sampled buffer-fill information is used to calculate a data rate control word for each of the plurality of tributaries, and stuff bit opportunities are serially calculated responsive to the control word. The rate of data being mapped into outgoing tributaries is regulated, and the outgoing mapped tributaries are combined in a SPE.

REFERENCES:
patent: 7212599 (2007-05-01), Subrahmanyan et al.
patent: 2008/0075125 (2008-03-01), Subrahmanyan et al.

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