Circuit with a digital to analog converter

Details Circuit with a digital to analog converter Circuit with a digital to analog converter

2006-05-09

2006-05-09

Nguyen, John B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S145000

Reexamination Certificate

active

07042378

ABSTRACT:
A first and second signal source are coupled to an analog output in a digital input signal dependent configuration. The signal sources so that a contribution of their source signals adds up in a first or a second direction when the digital input assumes a first or a second value respectively. The source signals counteract each other when the digital input signal assumes a third value. The signs with which the source signals contribute to the analog signal level for the third value are alternated, so that both signs occur substantially equally frequently for each of the signal sources. The spectral density of a deviation signal due to said alternating is concentrated at high frequencies. In an embodiment the spectral density is moved to high frequency by modulating the alternation onto a high frequency alternation that is used to generate return to zero levels between digital input signal dependent levels.

REFERENCES:
patent: 5134402 (1992-07-01), Miyoshi
patent: 5274375 (1993-12-01), Thompson
patent: 5689258 (1997-11-01), Nakamura et al.
patent: 6008747 (1999-12-01), Iida
patent: 6329941 (2001-12-01), Farooqi
patent: 6392573 (2002-05-01), Volk
patent: 6489905 (2002-12-01), Lee et al.
patent: WO 01 31793 (2001-05-01), None

Affiliated with

Also associated with

Rating

Circuit with a digital to analog converter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit with a digital to analog converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit with a digital to analog converter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3564472