Methods and apparatus for digitally encoding repetitive analog w

Details Methods and apparatus for digitally encoding repetitive analog w Methods and apparatus for digitally encoding repetitive analog w

1993-02-04

1994-10-04

Williams, Howard L.

Coded data generation or conversion

Sample and hold

341155, 341162, H03M 100

Patent

active

053530250

ABSTRACT:
In methods and apparatus for encoding a repetitive analog waveform as m n-bit digital words, p analog samples of the repetitive waveform are taken at each of m distinct sampling points, and q bits are derived from each distinct sample, where m, n, p and q are positive integers, p and q are less than n, and p.times.q=n. The methods and apparatus employ novel methods and apparatus for generating a pulse train having a precisely controlled duty cycle to define sampling times at which the samples are taken. The encoding methods and apparatus are useful for encoding high speed waveforms with relatively low speed circuitry.

REFERENCES:
patent: 4217524 (1980-08-01), Kinder et al.
patent: 4528591 (1985-07-01), Liepe et al.
patent: 4578667 (1986-03-01), Hollister
patent: 5212485 (1993-05-01), Shank et al.

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