Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2007-07-30
2010-02-16
Jeanglaude, Jean B (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C341S144000, C341S172000
Reexamination Certificate
active
07663525
ABSTRACT:
A digital to analog converter including a first capacitor, a second capacitor, an operational amplifier, and a switch is disclosed. During a first period, the first capacitor stores a first voltage and the second capacitor stores a second voltage. The operational amplifier comprises an input and an output. The switch parallels the first and the second capacitors with the operational amplifier at the input and output according to a digital signal during a second period.
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CN Office Action mailed Apr. 24, 2009.
English Abstract of CN1175824.
Jeanglaude Jean B
Mediatek Inc.
Thomas Kayden Horstemeyer & Risley
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