Patent ID: 9219457
Filing Date: 2015-12-22
Classification: H03G,H04M

Abstract:
1. A method for controlling amplification factor of a receiver device, comprising: detecting a first variation of an equivalent length of a cable; detecting a second variation of an amplification factor of a digital automatic gain controller (DAGC); determining a first update value of an amplification factor of an analog automatic gain controller (AAGC) according to the first variation and the second variation; calculating a tuning ratio of the first update value to a current value of the amplification factor of the AAGC; calculating a second update value of the amplification factor of the DAGC according to the tuning ratio; updating a set value of the amplification factor of the AAGC based on the first update value; and updating a set value of the amplification factor of the DAGC based on the second update value.