| 20080219137 | Copy-Protected Optical Information Carrier - Copy protection of an optical information carrier is provided by intentional physical modification of the information-carrying layer to affect the readability a software component stored in a specific location. By detection of the physical modification by the computer system, on which the information carrier is played back, the computer will attempt to read a specific part of a software component stored in the specific location, which is designated by a unique identification code entered into the computer either by retrieval from the information carrier itself or by user operation, e.g. via a keyboard. | 09-11-2008 |
