Circuit for high-frequency sampling and compression of data for

Details Circuit for high-frequency sampling and compression of data for Circuit for high-frequency sampling and compression of data for

1988-06-14

1989-05-02

Roskoski, Bernard

Coded data generation or conversion

Sample and hold

Having variable sampling rate

341164, 364487, 318636, 328151, H03M 154

Patent

active

048272590

ABSTRACT:
A circuit samples and stores high frequency transient events that affect low frequency steady state signals. The circuit digitizes the high frequency transient signal and samples the digital signals. The present and previously stored data samples are compared, and if the difference exceeds a threshold, the present sample is stored in memory, if the memory is not full, and simultaneously the internal counter is reset. If a number of successive samples do not exceed the threshold and are not stored within a defined interval, the last sample of the interval is stored and an interval counter is reset to zero. A logic circuit controls the timing and operation of the counter and storage of the sampled data.

REFERENCES:
patent: 3591779 (1971-07-01), Sutherland
patent: 4050062 (1977-09-01), Crocker et al.
patent: 4161782 (1979-07-01), McCracken
patent: 4183087 (1980-01-01), Huelsman
patent: 4232364 (1980-11-01), Bibbero
patent: 4393371 (1983-07-01), Morgan-Smith
patent: 4495586 (1985-01-01), Andrews
patent: 4568912 (1986-02-01), Kitamura et al.
Anderholm, Time-Tag Generator for Variable Sampling Rate---, IBM Tech. Discl. Bul., vol. 8, No. 11, 4/1966, pp. 1520 & 1521.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. I-1 to I-11.

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