Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves
Patent
1989-04-26
1991-09-03
Williams, Hezron E.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Analysis of complex waves
324307, 341155, G01R 2316, G01V 300, H03M 112
Patent
active
050457772
ABSTRACT:
An electric signal producing system according to the present invention comprises known signal generating means for generating a known signal having a predetermined frequency, adding means for adding the known signal to a reception signal to generate a mixture signal, an A/D converter for converting the mixture signal to digital data, and a computer for controlling the A/D converter to oversample the mixture signal by a frequency of twice or more as large as a predetermined sampling frequency and calculating in accordance with the digital data.
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Journal of Magnetic Resonance, 69, 504-507, 1986, "Improvement of DynamicRange by Oversampling" by Delsuc et al.
Electronic Product Design, Mar., 1987, pp. 59-62, "Oversampling to Increase S/N of ADC's" by Tiefenhaler.
Society of Magnetic Resonance in Medicine, 7th Annual Meeting Abstracts, p. 978, "A Method for the Reduction of ADC Quantization Noise" by Itagaki.
Arana Louis M.
Mitsubishi Denki K.K.
Williams Hezron E.
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