Method and apparatus for synchronizing a signal to a time base

Details Method and apparatus for synchronizing a signal to a time base Method and apparatus for synchronizing a signal to a time base

1987-01-02

1988-11-29

Griffin, Robert L.

Pulse or digital communications

Spread spectrum

Direct sequence

375 97, 375111, H04L 706

Patent

active

047886978

ABSTRACT:
Automatic selection of the rate at which a periodic signal is sampled to obtain a selected number of samples thereof within a predetermined interval is accomplished by first selecting the number of samples to be taken. The periodic signal is then sampled at an arbitrary rate, with the sampling being synchronized to the period of the signal. The number of samples obtained by sampling at the arbitrary rate is counted and compared to the chosen number of samples. If the counted number of samples is unequal to the chosen number of samples, then the arbitrary sampling rate is adjusted. The steps of sampling the signal, counting the number of samples, comparing the counted number to the chosen number of samples, and adjusting the arbitrary sampling rate are repeated until the counted number of samples equals the chosen number of samples, whereupon the adjusted arbitrary sampling rate becomes the selected sampling rate.

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"New Products," p. 197, Electronic Design, Oct. 31, 1985.

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