Pulse or digital communications – Synchronizers – Self-synchronizing signal
Reexamination Certificate
2011-04-12
2011-04-12
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Synchronizers
Self-synchronizing signal
C375S346000, C375S343000, C375S230000, C375S233000, C375S235000
Reexamination Certificate
active
07924962
ABSTRACT:
Clock synchronization resistance is improved against selectivity fading without degrading the stability of clock phase synchronization control. Clock phase detector7, which forms part of a clock reproduction PLL, is preceded by orthogonal component equalizer6for removing only orthogonal component interference wave not affecting the clock regeneration, thereby assuring an opening of an eye pattern and maintaining the gain of clock phase detector7without erasing the clock phase information. Accordingly, even when inter-symbol interference is caused in a received signal by selectivity fading or the like, part of the interference component can be erased to keep the opening of the eye pattern wide. Thus, the clock synchronization resistance can be improved against the selectivity fading without degrading the stability of the clock phase synchronization control.
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Liu Shuwang
McGinn IP Law Group PLLC
NEC Corporation
Timory Kabir A
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