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US 5,703,504 AGranted
Feedforward adaptive threshold processing method
AssigneeMotorola, Inc.
InventorsChristopher K. Y. Chun, Stephen G. Shook, Carl R. Ryan
Life of this patent
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Abstract
A signal processing circuit (10) generates a bias signal (27) that is used for biasing a comparator (26). An input signal (14) is compared to the bias signal (27) in order to reconstruct the input signal (14) on an output of the comparator. The bias signal (27) is generated by selecting the larger of a percent of the input signal (23) or an offset signal (24) that is larger than a minimum value of the input signal.
Claims12
A signal processing method comprising:
- applying an input signal to a ratio circuit;
- generating a reference signal having a value substantially equal to a minimum value of the input signal;
- generating a ratio signal that is proportional to a difference between the input signal and the reference signal;
- generating an offset signal that has a larger amplitude than the reference signal;
- and
- biasing a comparator with a one of the offset signal and the ratio signal which has a larger amplitude while using the comparator for receiving the input signal.
3 more elements
A signal processing method comprising:
- providing an input signal and a reference signal;
- generating a first signal from the reference signal, which first signal is a percent of the input signal;
- generating offset signal from the reference signal wherein the offset signal has a larger amplitude than the reference signal;
- generating a bias signal by selecting a one of the first signal and the offset signal with a larger amplitude;
- and
- comparing the input signal to the bias signal.
3 more elements
Dependencies are inferred from the claim text.