Multiplex communications – Communication techniques for information carried in plural... – Byte assembly and formatting
Reexamination Certificate
2005-11-01
2010-06-01
Chou, Albert T (Department: 2471)
Multiplex communications
Communication techniques for information carried in plural...
Byte assembly and formatting
C375S219000, C714S774000
Reexamination Certificate
active
07729384
ABSTRACT:
The framer, also referred to as the scrambler/Reed-Solomon encoder (SRS), is a part of the transmitter and accepts user and control data in the form of one or more logical channels, partitions this data into frames, adds error correction codes, randomizes the data through a scrambler, and multiplexes logical channels into a single data stream. The multiplexed data is then passed to the constellation encoder as the next step in the formation of the VDSL symbol. The deframer, also referred as the descrambler/Reed-Solomon decoder (DRS), is part of the receiver and performs the inverse function of the framer. Disclosed is a highly configurable hardware framer/deframer that includes a digital signal processor interface configured to provide high level control, a FIFO coupled to data interfaces, a scrambler and CRC generator, a Reed-Solomon encoder, an interleaver, a data interface coupled to a constellation encoder, a data interface coupled to a constellation decoder, a deinterleaver, a Reed-Solomon decoder, descrambler and CRC check, an interface to external data sync, methods for control of configuration of data paths between hardware blocks, and methods for control and configuration of the individual hardware blocks in a manner that provides compliance with VDSL and many related standards.
REFERENCES:
patent: 6498808 (2002-12-01), Tzannes
patent: 6801570 (2004-10-01), Yong
patent: 7409626 (2008-08-01), Schelstraete
patent: 2005/0185706 (2005-08-01), Heller et al.
patent: 2008/0037666 (2008-02-01), Tzannes
Brown Terry C.
Hansen Christopher R.
Mantri Ravi G.
Chou Albert T
Lee & Hayes PLLC
Metanoia Technologies, Inc.
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