The present invention prevents copying and playing back encrypted content to another playback device that is not genuine when playing a digital audio or video content such as an MP3 file, a study (study) file, or an e-book on a playback device. The present invention relates to a multifunctional digital learning terminal capable of preventing illegal copying and reproduction of digital content.;The learning terminal of the present invention includes a button and an LCD display unit 56 for inputting a control command and displaying an operating state; According to the control command input from the button and LCD display unit 56, download and store arbitrary content, and determine whether it is universal content or encrypted content when playing the selected content. A digital signal processor 44 for confirming whether the content is authorized to be played in the playback device and performing decryption and playback if the content is authenticated; A memory 48 for storing the downloaded content; A converter (50) for modulating the output from the digital signal processor (44) into an analog signal; And a power amplifier 52 for amplifying and outputting the signal of the converter 50 to the speaker 54.
展开▼
