Sampling frequency conversion device and sampling frequency...

Details Sampling frequency conversion device and sampling frequency... Sampling frequency conversion device and sampling frequency...

2008-01-01

2008-01-01

Payne, David C. (Department: 2611)

Pulse or digital communications

Synchronizers

Synchronizing the sampling time of digital data

Reexamination Certificate

active

07315597

ABSTRACT:
A sampling frequency conversion device comprises an internal circuit for executing in synchronization with an internal clock a signal processing of input data fetched in accordance with an input word clock, and for outputting the input data having undergone the signal processing as output data, a clock generation circuit for generating from the internal clock an output word clock and a counter clock having a frequency which is equal to that of the output word clock multiplied by n (n: integer equal to two or more), a counter for counting the counter clock, and a register for holding a counter value of the counter in synchronization with the input word clock, and for outputting the held counter value to the internal circuit.

REFERENCES:
patent: 5973990 (1999-10-01), Sakurai
patent: 6160542 (2000-12-01), Hwang
patent: 6239635 (2001-05-01), Matsuzaki
patent: 6636165 (2003-10-01), Freidhof
patent: 61-204700 (1986-09-01), None

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