Method and apparatus for asynchronous time measurement

Details Method and apparatus for asynchronous time measurement Method and apparatus for asynchronous time measurement

1987-08-04

1990-03-13

Lall, Parshotam S.

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364556, 368119, 368120, 377 20, G04F 800, G06F 1520

Patent

active

049087843

ABSTRACT:
The present invention relates to time measurement apparatus and method for measuring, with picosecond precision, intervals between single edged events, where each measured interval comprises the summation of a rough clock count and fine or calibrated vernier counts of measured fractional clock periods before and after each START and STOP event selected from a calibrated vernier memory. The calibrated vernier memory takes the form of a table of linear voltage versus time developed using pseudo-random generated measurement events of random duration and random separation.

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patent: 4678345 (1987-07-01), Agoston
patent: 4764694 (1988-08-01), Winroth
Review of Scientific Instruments, Sep. 1968, "Digital Time Intervalometer", R. Nutt, pp. 1342-1345.

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