Information terminal device and option unit therefor

Details Information terminal device and option unit therefor Information terminal device and option unit therefor

H - Electricity

04

L

H04L 12/10 (2006.01) H04B 3/54 (2006.01) H04L 12/28 (2006.01) H04L 12/66 (2006.01)

Patent

CA 2638106

According to one embodiment, there is provided an information terminal device which receives power via a communication cable from a power sourcing device recognizes a class identifying power-sourcing characteristics on the basis of response characteristics to a defined value voltage given in authentication and which is configured to connect an option unit. The information terminal device comprises a resistor unit which is disposed on a power sourcing line from the communication cable and configured to vary a resistor value, a control unit which recognizes a class of the information terminal device itself and sets a resistor value in order to achieve response characteristics corresponding to the recognized class, and a storing unit which stores the set resistor value.

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