Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2006-10-17
2006-10-17
Mai, Lam T. (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S161000
Reexamination Certificate
active
07123177
ABSTRACT:
A system and method is provided for stabilizing high order sigma delta modulators. The system includes an integrator having a limiter in the feedback path of the integrator. The integrator combines an input signal with a feedback signal generated by the limiter to produce an integrated output signal. The output signal is output to the next component of the sigma delta modulator. In addition, the output signal is fed back through the limiter. When an output signal received in the feedback path by the limiter exceeds the threshold value of the limiter, the limiter is activated and clamps the output signal to produce a limited signal. The limited signal is combined with the input signal to the integrator to produce the output signal.
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Cheng Taiyi
van Engelen Josephus
Wang Minsheng
Broadcom Corporation
Mai Lam T.
Sterne Kessler Goldstein & Fox PLLC
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