Generation of a digital correction signal to compensate for gain

Details Generation of a digital correction signal to compensate for gain Generation of a digital correction signal to compensate for gain

1990-03-02

1991-03-12

Shoop, Jr., William M.

Coded data generation or conversion

Converter compensation

341143, 375 26, H03M 106

Patent

active

049996258

ABSTRACT:
A digital correction signal is generated as a weighting actor for a first digital output signal applied to a digital integrator formed within a comb filter to compensate for gain mismatches between the stages of a sigma delta modulator and improve the resolution of the digital output signal at the output bus of an oversampling analog-to-digital converter. The current state the a first digital output signal provided at the output of one stage of the sigma delta modulator is compared with the previous state of the same signal. A detection signal is activated upon the occurrence of two consecutive states of the firrt digital output signal of the same level wherein such an occurrence corresponds to a noise spike in the digital output signal. The digital output signal is sampled during and after the spike, and the sampled values thereof are compared. The value of the digital correction signal is adjusted in response to the before-and-after comparison until the samples of the noise spike reach a predetermined minimum value.

REFERENCES:
patent: 4156871 (1979-05-01), Lambourn
patent: 4186384 (1980-01-01), Acker
patent: 4308524 (1981-12-01), Harrison
patent: 4704600 (1987-11-01), Uchimura et al.
patent: 4862169 (1989-08-01), van Bavel et al.
patent: 4876542 (1989-10-01), van Bavel et al.
patent: 4943807 (1990-07-01), Early et al.

Affiliated with

Also associated with

Rating

Generation of a digital correction signal to compensate for gain does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Generation of a digital correction signal to compensate for gain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Generation of a digital correction signal to compensate for gain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-450974