Coded data generation or conversion – Sample and hold – Having variable sampling rate
Patent
1992-07-17
1994-04-12
Logan, Sharon D.
Coded data generation or conversion
Sample and hold
Having variable sampling rate
341155, H03M 500
Patent
active
053029500
ABSTRACT:
Method of, and apparatus for, providing automatic detection of potential information loss due to undersampling and automatic detection of potential storage waste due to oversampling based on automatic determination of an analog signal's Nyquist rate. The invention acquires an analog signal, determines a maximum frequency of the analog signal and a corresponding Nyquist rate, and allows a user to select a sampling rate based on either the automatically determined Nyquist sampling rate, a user specified sampling rate, a sampling rate determined by a user specified bandwidth, or a sampling rate determined by user specified available space. The invention also informs a user when a loss of information may occur due to a sampling rate being less than the Nyquist rate. The invention also informs a user when a waste of storage may occur due to a sampling rate being greater than the Nyquist rate.
REFERENCES:
patent: 4763207 (1988-08-01), Podolak et al.
patent: 4816829 (1989-03-01), Podolak et al.
patent: 5119093 (1992-06-01), Vogt et al.
Johnson William J.
Lachman Larry M.
Vega Guillermo
Williams Marvin L.
International Business Machines Corp.
Johnson Prentiss W.
Logan Sharon D.
Mantooth Geoffrey A.
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