Multiplex communications – Communication techniques for information carried in plural... – Assembly or disassembly of messages having address headers
Reexamination Certificate
2011-08-02
2011-08-02
Pham, Chi H. (Department: 2471)
Multiplex communications
Communication techniques for information carried in plural...
Assembly or disassembly of messages having address headers
C370S392000, C370S465000
Reexamination Certificate
active
07991010
ABSTRACT:
A supervisory communications device, such as a headend device within a communications network, monitors and controls communications with a plurality of remote communications devices throughout a widely distributed network. The supervisory device allocates bandwidth on the upstream channels by sending MAP messages over its downstream channel. A highly integrated media access controller integrated circuit (MAC IC) operates within the headend to provide lower level processing on signals exchanged with the remote devices. The enhanced functionality of the MAC IC relieves the processing burden on the headend CPU and increases packet throughput. The enhanced functionality includes header suppression and expansion, DES encryption and decryption, fragment reassembly, concatenation, and DMA operations
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Denney Lisa Voigt
Horton, Jr. John Daniel
Lansing Shane Patrick
Moshar Hooman
Nazareth Sean Francis
Broadcom Corporation
Mew Kevin
Pham Chi H.
Sterne Kessler Goldstein & Fox P.L.L.C.
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