Method and apparatus for correction of A/D converted output...

Details Method and apparatus for correction of A/D converted output... Method and apparatus for correction of A/D converted output...

2005-05-10

2005-05-10

Jeanglaude, Jean (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S118000

Reexamination Certificate

active

06891491

ABSTRACT:
A method for correcting A/D converted output data which corrects digital data obtained by A/D conversion of an analog signal, comprising forming an at least first order polynomial curve approximating an input/output characteristic curve of A/D conversion in a range of input of the analog signal, setting an ideal input/output characteristic line of A/D conversion, deriving a conversion equation for converting coordinates of a point on the approximation polynomial curve to a point of the ideal input/output characteristic line for the same analog signal value, and using this conversion equation to convert A/D converted digital data so as to correct non-linearity of the output data.

REFERENCES:
patent: 5396247 (1995-03-01), Watanabe et al.
patent: 5848383 (1998-12-01), Yunus
patent: 6466151 (2002-10-01), Nishii et al.
patent: 20030195910 (2003-10-01), Corless et al.
patent: 5-259907 (1993-10-01), None
patent: 10-145231 (1998-05-01), None

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