Patent ID: 7243242
Filing Date: 2007-07-10
Classification: G06F,H04M,H04W,Y02D

Abstract:
1. A data terminal device accommodated in a casing in a form of a shell, downloading from a distribution server encrypted content data and a license key decrypting said encrypted content data, and reproducing said encrypted content data, comprising: a communication unit externally effecting a communication; a data recording device recording said encrypted content data and said license key therein, and receiving authentication data and outputting said license key only when said authentication data is authenticated; an interface controlling data communication; a control unit; a detection unit detecting whether said casing is open/closed; and a power supply control unit controlling whether to supply various components with power, wherein when said detection unit detects that said casing is closed after download of said encrypted content data is started, said power supply control unit controls supplying power required for a call to complete downloading said encrypted content data.