Signal detector circuit and signal detection method
AssigneeRealtek Semiconductor Corp.
InventorBing-Hung Chen
Life of this patent
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Abstract
A signal detector circuit includes a signal peak detector circuit, a reference voltage generation circuit, and a comparator circuit. The signal peak detector circuit is arranged to receive a plurality of differential voltage input signals, and generate a single-ended peak signal according to the plurality of differential voltage input signals. The reference voltage generation circuit is arranged to generate a single-ended reference voltage signal. The comparator circuit is arranged to receive the single-ended peak signal and the single-ended reference voltage signal, and compare the single-ended peak signal with the single-ended reference voltage signal to generate a signal detection result.
Claims10
A signal detector circuit, comprising:
- a signal peak detector circuit, arranged to receive a plurality of differential voltage input signals, and generate a single-ended peak signal according to the plurality of differential voltage input signals;
- a reference voltage generation circuit, arranged to generate a single-ended reference voltage signal;
- and
- a comparator circuit, arranged to receive the single-ended peak signal and the single-ended reference voltage signal, and compare the single-ended peak signal with the single-ended reference voltage signal, to generate a signal detection result;
- wherein the signal peak detector circuit comprises multiple switch circuits, and the signal peak detector circuit samples and holds the plurality of differential voltage input signals by conducting the multiple switch circuits, to generate the single-ended peak signal.
A signal detection method, comprising:
- receiving a plurality of differential voltage input signals;
- generating a single-ended peak signal according to the plurality of differential voltage input signals;
- generating a single-ended reference voltage signal;
- and
- comparing the single-ended peak signal with the single-ended reference voltage signal to generate a signal detection result;
- wherein generating the single-ended peak signal according to the plurality of differential voltage input signals comprises:
- sampling and holding the plurality of differential voltage input signals by conducting multiple switch circuits, to generate the single-ended peak signal.
Dependencies are inferred from the claim text.