COMPOSITE DATA TRANSMISSION INTERFACE AND A JUDGMENT METHOD THEREOF

摘要

The present invention relates to a composite data transmission interface and a judgment method thereof which is based on metal contacts shared by a smart card and a universal series bus and comprise steps as follows: link a composite pin to a socket; electrical conductivity is completed with a socket linking a composite pin; a controller connected to the composite pin is activated by electricity; a smart card's or a universal series bus's electrical conductivity mode is enabled by the controller by means of the smart card's or the universal series bus's electrical connection mode.