Variable sampling data output circuit

Details Variable sampling data output circuit Variable sampling data output circuit

2006-10-17

2006-10-17

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S355000, C375S373000, C375S340000

Reexamination Certificate

active

07123677

ABSTRACT:
A sampling data output circuit capable of Accommodating frequency variations includes a converter portion for sampling an input data signal (402) at an oversampling frequency to output, in parallel, a plurality of fundamental signal series (p1,p2,p3,p4), a first circular shifter for receiving the plurality of fundamental signal series and outputting a plurality of first frequency shift signal series having a higher frequency than the fundamental sampling frequency, and a second circular shifter for receiving the plurality of fundamental signal series and outputting a plurality of second frequency shift signal series having a lower frequency than the fundamental sampling frequency. The first and second circular shifters create each of the signal series by selecting a signal sample out of the input fundamental signal series according to a count value of a phase shift cumulative counter and a predetermined rule related to the frequency shift.

REFERENCES:
patent: 6363175 (2002-03-01), Scheirer et al.
patent: 6510182 (2003-01-01), Lee et al.
patent: 6888888 (2005-05-01), Tu et al.

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