A recording and/or playback apparatus having a first storage medium including a management region and a data region, an initializing device for initializing the first storage medium so that the first storage medium includes the management region and the data region, a generating device for generating a predetermined value when the initialization is performed, a second storage medium storing the predetermined value therein, a transforming device for applying a transformation to the predetermined value so as to be a different value, and a control device for controlling the output of the transforming device so as to store the output in the management region.

 
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< Method of and apparatus for restricting copy of digital information, and apparatus for recording digital information

> Locally stored content previews. Representative of programming content in an electronic programming guide through a graphic image accessed from the hard drive of a set top box

> Enhancing broadcast of an event with synthetic scene using a depth map
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