Patent ID: 8416966

Claim:
A method of automatic gain modulation, comprising: receiving an original signal and introducing a gain; sampling the original signal; pre-adding a predict gain and obtaining a new signal for prediction; determining whether intensity of the new signal for prediction after pre-adding the predict gain during a hold time is greater than a predetermined threshold or not; when the intensity of the new signal is not greater than the predetermined threshold, a signal processed by an automatic gain-control modulation on the original signal is outputted; when the intensity of the new signal for prediction is greater than the predetermined threshold, it is to determine whether the intensity of the new signal is greater than a maximum upper threshold; when the intensity of the new signal is not greater than the maximum upper threshold, a signal processed by the automatic gain-control modulation on the original signal is outputted; and when the intensity of the new signal is greater than the maximum upper threshold, the gain is gradually decreased, and a signal processed by a gain-control modulation on the original signal is outputted.