Synchronizing separated edge QAM devices located remotely...

Details Synchronizing separated edge QAM devices located remotely... Synchronizing separated edge QAM devices located remotely...

2011-01-18

2011-01-18

Qureshi, Afsar M. (Department: 2472)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S521000, C725S144000

Reexamination Certificate

active

07873077

ABSTRACT:
The clocks of one or more edgeQAM devices are synchronized with a master clock at the remotely located CMTS. A master clock signal may be transmitted via a dedicated gigabit Ethernet link. Alternatively, master clock information contained in a time synchronization message may be transmitted for use in adjusting local oscillators that drive local clocks at respective edgeQAM devices.

REFERENCES:
patent: 7403547 (2008-07-01), Downey et al.
patent: 2003/0014763 (2003-01-01), Chappell et al.
patent: 2003/0200548 (2003-10-01), Baran et al.

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