Coded data generation or conversion – Analog to or from digital conversion – Nonlinear
Patent
1989-01-23
1991-02-05
Shoop, Jr., William M.
Coded data generation or conversion
Analog to or from digital conversion
Nonlinear
341138, 341155, H03M 118
Patent
active
049909134
ABSTRACT:
An acquisition device for digitizing highly dynamic signals. After amplification in a fixed gain amplifier, the signals are applied to a sample and hold unit, the output of which is connected to an analog-to-digital converter to which a variable reference voltage is applied. This reference voltage is available at the output of a multiplexer to the inputs of which voltages are applied derived from sub-divisions of a calibrated voltage. The choice of the reference voltage is effected by a logic assembly as a function of the comparisons made by comparators between the sampled voltage and the derived voltages. The digitized signals are represented by a digital word from the converter and a digital word of gain G from the logic assembly.
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Institut Francais du Petrol
Shoop Jr. William M.
Williams Howard L.
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