| 主权项 |
1. An input interface device for portable device, comprising:
a first downstream electrical connection unit, being used for electrically connecting to portable device; a processing unit, being coupled to the first downstream electrical connection unit; and a second downstream electrical connection unit, being coupled to the processing unit, and used for electrically connecting to an external electronic device; wherein when the portable device is connected to the first downstream electrical connection unit, the processing unit would detect whether the portable device is installed with an application program, so as to automatically install the application program in the portable device; wherein when the external electronic device is connected to the second downstream electrical connection unit, the application program would automatically carry out a device identification operation for the external electronic device; wherein when the electronic device outputs an input data signal, the processing unit would receive the input data signal so as to execute a character coding operation to the input data signal and then further output a coded data signal to the portable device, such that the application program is able to decode the coded data signal to an input data. |
