Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Reexamination Certificate
2007-01-23
2007-01-23
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
C327S231000, C327S237000
Reexamination Certificate
active
11038061
ABSTRACT:
In a clock phase corrector appropriately correcting the phase of a data sampling clock signal, a series of shift registers responds to respective sampling clock signals to store received data sequentially. The stored data are duplicated by a comparator register in response to corresponding clock signals to output a demodulated signal. A corrector shift register is provided to store sampled data in response to a clock signal. The data thus stored are then held in a reception register as intended reception data. A comparator compares the demodulated signal with the intended reception data. Based upon a result from the comparison, a bit adder produces the number of inconsistent bits. Another comparator compares the number of inconsistent bits with the number of error acceptance bits stored in an error acceptance memory to generate a phase detection signal, in response to which a timing control adjusts the phase of a data sampling clock signal.
REFERENCES:
patent: 5787132 (1998-07-01), Kishigami et al.
patent: 5920220 (1999-07-01), Takao et al.
patent: 6280774 (2001-08-01), Rang
patent: 6618459 (2003-09-01), Tada
Le Dinh T.
Nixon & Peabody LLP
Oki Electric Industry Co. Ltd.
Studebaker Donald R.
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