Inventor

Zeng zhi-ming

CN3 patents

Patents

3 patents

US10644863B2May 5, 2020

Communication device and echo cancellation method thereof

ALI CORP7 citations74

US8036618B2Oct 11, 2011

Auto gain controller and control method thereof

ALI CORP3 citations54

US10050667B2Aug 14, 2018

Network connection device and cable status detection method

ALI CORP0 citations33