Method for aligning a serial bit stream with a parallel output

Coded data generation or conversion – Digital code to digital code converters – Serial to parallel

Reexamination Certificate

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Details

C714S718000

Reexamination Certificate

active

07876244

ABSTRACT:
The invention relates to a method and circuit for aligning a serial bit stream with a parallel output. The method comprises latching Q bits from the serial bit stream into a register, locating a position P of a first bit of a start of frame delimiter (SFD) in the register and discarding P-1 bits from the serial bit stream, before the position of the first bit of the SFD, thereby aligning the serial bit stream with the parallel output. The circuit comprises a latch, a fault tolerant analysis logic (FTAL) for locating a position P of a first bit of a start of frame delimiter (SFD) in the register and a shift register for discarding P-1 bits from the serial bit stream, before the position of the first bit of the SFD, thereby aligning the serial bit stream with the parallel output.

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Shastri, Bhavin J. et al.: “Burst-Mode Clock and Data Recovery with FEC and Fast Phase Acquisition for Burst-Error Correction in GPONs”; Department of Electrical and Computer Engineering, Photonic Systems Group, McGill University, Montreal, Canada, 2007 (pp. 120-123).
International Search Report for PCT/IB2010/052376 dated Sep. 29, 2010; 7 pages.

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