Digital-to-analog converters and methods thereof

Details Digital-to-analog converters and methods thereof Digital-to-analog converters and methods thereof

2011-08-16

2011-08-16

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S139000, C341S143000

Reexamination Certificate

active

07999712

ABSTRACT:
A digital-to-analog converter for converting a digital signal into an analog signal is provided. The digital-to-analog converter includes a preprocessing unit, a gain controller, a modulator and an output unit. The preprocessing unit receives and oversamples the digital signal to generate an oversampled signal. The gain controller generates an adjusted signal with a gain function according to a reference signal associated with the oversampled signal when a specific condition is present. The modulator modulates the adjusted signal and generates a modulated signal. The output unit provides the analog signal to a load according to the modulated signal, wherein the analog signal gradually approaches to a specific level according to the gain function when the specific condition is present.

REFERENCES:
patent: 6281821 (2001-08-01), Rhode et al.
patent: 7020293 (2006-03-01), Shimotoyodome
patent: 7254244 (2007-08-01), Henson et al.
patent: 2002/0018013 (2002-02-01), Nakao et al.
patent: 2010/0062736 (2010-03-01), Zeng

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