Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2007-02-27
2007-02-27
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S144000
Reexamination Certificate
active
11152132
ABSTRACT:
A sigma-delta modulator. The sigma-delta modulator comprises a summer, a loop filter, a quantizer, a D/A converter and a dynamic element matching logic. The summer receives an analog input signal and a feedback signal to generate an error signal to the loop filter which generates a filtered signal to the quantizer, thereby converting the filtered signal to a quantized output signal to the D/A converter including D/A elements and generating the feedback signal corresponding to selected D/A elements thereof. The dynamic element matching logic coupled between the quantizer and D/A converter selects the D/A elements of the D/A converter, wherein it divides the D/A elements into groups, where the number of the groups is prime to that of the D/A elements, and then selects the groups and D/A elements thereof according to the quantized output signal and the previous selection of groups and D/A elements.
REFERENCES:
patent: 6515607 (2003-02-01), Liu et al.
patent: 6677875 (2004-01-01), Dagher et al.
patent: 6864819 (2005-03-01), Wang
patent: 6956514 (2005-10-01), Melanson et al.
Faraday Technology Corp.
Hsu Winston
Jean-Pierre Peguy
LandOfFree
Sigma-delta modulator, D/A conversion system and dynamic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sigma-delta modulator, D/A conversion system and dynamic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sigma-delta modulator, D/A conversion system and dynamic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3862199