Method and apparatus for serial communication using...

Pulse or digital communications – Synchronizers – Self-synchronizing signal

Reexamination Certificate

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C375S355000, C375S259000

Reexamination Certificate

active

07995693

ABSTRACT:
Apparatus for serial communication using embedded clock signals includes a data divider for dividing a data stream into odd-numbered and even-numbered data streams; a clock-embedded signal generator for generating odd-numbered and even-numbered embedded clock signals by pulse amplitude modulating the odd-numbered and even-numbered data streams and, when an external clock is input, inverting polarities of the pulse amplitude modulated odd-numbered and even-numbered data streams; a clock-embedded signal recovery unit for recovering the odd-numbered and even-numbered data streams by comparing amplitudes of the odd-numbered and even-numbered embedded clock signals with reference voltages, respectively, and recovering synchronization information of the clock by detecting when amplitude polarities of the odd-numbered and even-numbered embedded clock signals are inverted; and a data integrator for integrating the odd-numbered and even-numbered data streams and supplying the result as the data stream.

REFERENCES:
patent: 2002/0153936 (2002-10-01), Zerbe
patent: 2005/0135413 (2005-06-01), Yang et al.
patent: 2005/0259772 (2005-11-01), Voutilainen
patent: 2006/0186915 (2006-08-01), Werner et al.
patent: 2006/0268699 (2006-11-01), Balandin et al.

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