Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Cathode ray
Patent
1982-06-04
1985-04-09
Levy, Stewart J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Cathode ray
324 99D, 324111, G01R 1320
Patent
active
045104441
ABSTRACT:
Digital measuring device, including a trigger generator having an input for receiving an analog measuring input signal, a variable delay line being connected to the trigger generator and having an output, an analog/digital converter receiving the analog measuring input signal, a transient memory connected to the analog/digital converter, a picture refresh memory connected to the transient memory for storing the measuring input signal, a Walsh function generator connected to the picture refresh memory, a liquid-crystal picture screen being connected to and addressed by the Walsh function generator, the output of the variable delay line being connected to the analog/digital converter, the transient memory and the picture refresh memory, and a selectable time base being connected to the variable delay line, the analog/digital converter and the transient memory.
REFERENCES:
patent: 3816815 (1974-06-01), Schumann
patent: 4034291 (1977-07-01), Allen et al.
patent: 4114095 (1978-09-01), Pankove et al.
patent: 4271391 (1981-06-01), Kmetz
E. Wunderlich, "Transient Memories, One of the Most Versatile Measuring Devices in Oscillography" in Elektronik Praxis, No. 12, Dec. 1969.
Haussel Werner
Kindermann Robert
Roppelt Gunter
Greenberg Laurence A.
Lerner Herbert L.
Levy Stewart J.
Metrawatt GmbH
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