Inventor
YU HUA ZHANG
CN3 patents
Patents
3 patentsUS9906509B2Feb 27, 2018
Method for offline DRM authentication and a system thereof
LU ZHOU3 citations69
US8060673B2Nov 15, 2011
Smart card read/write control method based on USB interface and reader/writer thereof
LU ZHOU4 citations59
US9208297B2Dec 8, 2015
One time password inquiry method and token
LU ZHOU1 citations48