Sampling method and apparatuses

Details Sampling method and apparatuses Sampling method and apparatuses

1977-12-23

1980-02-12

Safourek, Benedict V.

Boots, shoes, and leggings

364112, 332 16R, 331 78, H04L 2712

Patent

active

041885830

ABSTRACT:
Apparatus and method for sampling analog signals during successive time periods, the sampling signals being essentially aperiodic. The interval between sampling pulses is selected pseudo-randomly. A circuit for producing essentially aperiodic sampling signals gates a periodic signal through a number of delay means, each having a delay time that is a small fraction of each period, the number of delay means being selected by pseudo-random signals. Periodicity of quantization errors is broken up, thereby reducing concomitant unwanted harmonics of the sampling frequency that are introduced when the sampling signals occur at equal time intervals.

REFERENCES:
patent: 2701305 (1955-02-01), Hopper
patent: 3614400 (1971-10-01), Farnett
patent: 3790768 (1974-02-01), Chevalier et al.
patent: 3823377 (1974-07-01), Keane et al.
patent: 3963905 (1976-06-01), Gopinath et al.

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