Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2005-02-09
2011-11-29
Sheikh, Ayaz (Department: 2476)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S509000, C725S031000, C725S111000, C713S401000
Reexamination Certificate
active
08068516
ABSTRACT:
The invention provides a system and a method for synchronizing cable modems, the method includes the stages of: (i) generating, at a media access control entity, synchronization messages; and (ii) updating the synchronization messages to provide updated synchronization messages, whereas the updating is responsive to delays introduced at least during a stage of multiplexing the updated synchronization messages and additional content. The invention provides a system and a method of encrypting a data stream, the method includes the stages of: (i) receiving, at a multiplexing entity, at least one data stream destined to at least one cable modem; (ii) receiving, at the multiplexing entity, at least one encryption key generated by a cable modem termination system, whereas each encryption key is associated with at least one cable modem; and (iii) encrypting at least one data stream with at least one encryption key associated with the at least one cable modem.
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Bigband Networks Inc.
Reches Patents
Sheikh Ayaz
Vu Hoang-Chuong
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