Compander architecture and methods
OwnerKarl L. Bizjakinventor
Life of this patent
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Abstract
Compander architecture and method for ensuring that the components of an output signal are synchronized includes calculating a gain calculation for an input signal, detecting a predetermined condition such as a zero crossing or absence of a zero crossing within a specified period, and ensuring that the result of the gain calculation is providing to the system synchronously with the input signal. The input signal may be divided into one or more signals for processing, and the gain calculation may include one or more power estimations and one or more gain cells associated with the multiple signals, and may further include variable attack and release.
Claims82
A compander comprising
- an input signal,
- gain calculate logic responsive to the input signal for calculating a gain calculate signal,
- synchronizer logic responsive to the input signal and the gain calculate signal for synchronizing the input signal and the gain calculate signal to provide an output signal.
An equalizer comprising
- a first input representative of a time betweeen events,
- a computation engine responsive to the input and capable of supplying an equalization value in accordance with the first input,
- a second input representative of a signal characteristic associated with the time between events, and
- combiner logic for combining the equalization value with the second input.
A signal processor comprising
- a first input representative of a time betweeen events,
- a computation engine responsive to the input and capable of supplying filter parameters in accordance with the first input,
- a second input representative of a signal characteristic associated with the time between events, and
- a filter responsive to the filter parameters for processing the second input.
A compander having
- an input comprising at least one power estimator signal,
- first signal processing stage for processing the at least one power estimator signal.
A compander having
- a first input comprising at least one local power estimator signal,
- a second input comprising at least one external power estimator signal,
- a first signal processor for processing the first input and the second input to produce a first output.
The compander of 67 wherein the processing performed by the second signal processor includes demodulating the second input signal, and the processing performed by the third signal processor including modulating the first input signal.
A signal processing method for use with companders comprising the steps of
- providing at least one local power estimator signal,
- providing at least one external power estimator signal,
- signal processing the local power estimator signal and the external power estimator signal to produce a first output.
A compander having
- a first plurality of power estimator signals,
- first signal processing stage for combining at least some of the first plurality of power estimator signals and for generating at least one output signal.
A compander having
- a first external power estimator signal,
- a second external power estimator signal,
- a first signal processor for processing the first and second power estimator signals to produce a first output wherein processing includes at least one of a group comprising scaling, combining and selecting the first and second power estimator signals.
Dependencies are inferred from the claim text.