Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1978-05-11
1980-08-12
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315367, H01J 2970, H01J 2972
Patent
active
042175240
ABSTRACT:
The invention is a method and structure for generating representations of repetitive electrical waveforms by sampling the magnitude of a plurality of points on the waveform. The sampling method is characterized by progressively forming an approximation of the magnitude of each waveform point during a plurality of repetitions of the waveform. In accordance with one feature of an illustrative embodiment of the invention, the magnitude of the waveform at each of the points is formed by successively comparing during a plurality of repetitions of the waveform the waveform magnitude to the magnitude of a reference signal associated with the point and by adjusting the magnitude of the reference signal after each comparison in accordance with the result of comparison. The invention includes circuit structure for performing the foregoing method.
REFERENCES:
patent: 3156913 (1964-11-01), Crocker et al.
patent: 3859556 (1975-01-01), Schumann
patent: 3922666 (1975-11-01), Inami et al.
patent: 4069452 (1978-01-01), Conway et al.
patent: 4083042 (1978-04-01), Kushin et al.
Huck et al, A Strobing Voltmeter, Western Electric Co. Technical Digest No. 13, Jan. 1969, pp. 21-22
Dendinger, High-Speed Analog Sampler Uses Only Two IC's, EDN Magazine, 5-20-77, pp. 128-129.
Kinder George W.
Winter Harry
Bell Telephone Laboratories Incorporated
Blum Theodore M.
Herndon Jerry W.
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