Coded data generation or conversion – Analog to or from digital conversion
Reexamination Certificate
2006-04-25
2006-04-25
Nguyen, John B (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
C341S120000, C341S118000
Reexamination Certificate
active
07034724
ABSTRACT:
A training method of a digital-analog converter is provided. The digital-analog converter comprises a plurality of parallel capacitors, each of which is floatingly coupled to a plurality of correcting capacitors. Two voltages outputted from the digital-analog converter are received and compared. When a latter output voltage is lower than or equal to a former output voltage, the correcting capacitor is used to correct the capacitor corresponding to the latter output voltage until the latter output voltage is higher than the former output voltage. When the latter output voltage is higher than the former output voltage, a new voltage is outputted from the digital-analog convert and compared with the latter output voltage. The steps of comparing and correcting are repeated until every latter output voltage is higher than every former output voltage.
REFERENCES:
patent: 4381495 (1983-04-01), Hotta et al.
patent: 4407020 (1983-09-01), Helliwell et al.
patent: 4415882 (1983-11-01), Akazawa et al.
patent: 4496937 (1985-01-01), Kitagawa et al.
patent: 5184131 (1993-02-01), Ikeda
Jiang Chyun IP Office
Nguyen John B
Prolific Technology Inc.
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