ADAPTIVE ENVELOPE EXTRACTING APPARATUS, SIGNAL DECODING APPARATUS AND SHORT-DISTANCE CONTACTLESS COMMUNICATION APPARATUS APPLYING THE ADAPTIVE ENVELOPE EXTRACTING APPARATUS, AND METHOD THEREOF

摘要

An envelope extracting apparatus includes: a clock extracting device arranged to extract a clock signal of a receiving modulation signal according to a first biasing voltage; and an edge detecting device arranged to generate a detecting signal to indicate an envelope edge of the receiving modulation signal according to a delayed clock signal of the clock signal and a second biasing voltage; wherein the second biasing voltage or a delay time of the clock signal is adjustable.

主权项

1. A signal decoding apparatus, comprising:
an envelope extracting apparatus, arranged to extract an envelope signal of a receiving modulation signal, and to generate a clock signal of the receiving modulation signal; a phase-locked loop, arranged to generate a continuous clock signal according to the clock signal and the envelope signal; and a decoding device, arranged to generate a digital output data according to the envelope signal and the continuous clock signal.