| 摘要 |
First, an optical disc that is playable on a player and on a device of a computerized device, has first and second data. The first data represents content that is playable on the player and on the device; when the disc is inserted, the content is immediately accessible. The second data represents a program which automatically runs when the disc is inserted, to prevent access except as the program permits. Second, a computer includes an optical disc device and a driver to control access to discs inserted into the device by programs running on the computer. The access is controlled by the driver; access is prevented to discs of a predetermined type, except as permitted by the driver. Third, a computer includes a sound card having recording inputs and a driver. The driver disables the inputs when it detects a predetermined signature in audio data being played through the card.
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