Floating point analog to digital converter

Details Floating point analog to digital converter Floating point analog to digital converter

1990-07-31

1991-10-29

Scott, J. R.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341140, 341155, 341172, 341139, H03M 118, H03M 158

Patent

active

050619276

ABSTRACT:
A floating point analog to digital converter having an exponent converter which divides the input signal successively one-half until the divided signal is within the range of a mantissa linear analog to digital converter. The exponent converter also generate a digital exponent representative of the division factor. The resulting divided signal is then digitized by the mantissa analog to digital converter. An output is thereby provided composed of a digital exponent and a digital mantissa. In one embodiment, the floating point converter is a charge mode converter suitable for direct interface to a charge mode device such as a CCD image sensor.

REFERENCES:
patent: 3685046 (1972-08-01), Howlett
patent: 3872465 (1975-03-01), Loofbourrow
patent: 4010462 (1977-03-01), Armistead
patent: 4048635 (1977-09-01), Bich
patent: 4392124 (1983-07-01), Benoit-Gonin et al.
patent: 4399416 (1983-08-01), Gillespie

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