| 摘要 |
A cellular network providing continuous high-speed internet access (36) enables a portable device to receive copyrighted text/audio/video materials while providing a high level of security against illegal copies of such works. The device is multi-purpose and eliminates the need for any non-volatile data storage. The system accommodates additional applications such as those found in PDAs as well as in music download devices. Method of including the system features into portable PCs are also disclosed, as well as methods of interfacing with broadcast receivers (26), networked appliances and outdoor advertising (28).
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