Patent ID: 7392027
Filing Date: 2008-06-24
Classification: H03G,H03M,H04W

Abstract:
1. An automatic gain control device characterized by comprising: an amplifier for a reception signal, which can set a gain; information processing means for extracting control data from an output from said amplifier and performing information processing for the data; storage means for storing a gain setting value of said amplifier; and control means for controlling a gain of said amplifier in accordance with a preset control algorithm, wherein on the basis of a result obtained when said control means computes the gain setting value stored in said storage means in accordance with the preset algorithm, said control means controls the gain of said amplifier in correspondence with operation of switching a frequency of a reception signal, which is accompanied by different frequency monitoring in a compressed mode by said information processing means, wherein the preset algorithm comprises an algorithm for predicting an optimal value of a gain setting value for a first reception signal after different frequency monitoring on the basis of an amount of change in gain setting value of the first reception signal before different frequency monitoring and an amount of change in gain setting value for a second reception signal during different frequency monitoring.