DVD protection
Macrovision ACP
ACP - Analogue Copy Protection
By means of ACP it is possible to add to the output image stream a signal, which will influence the possibility of copying of the content with use of analogue output.
The DVD disc or VOD (Video On Demand - image stream transferred within the network of the cable or satellite television) fitted with this protection, initializes in the player an electronic circuit, which adds the above-mentioned signal to the analogue video output. The signal disables or in a significant way distorts the copy performed on the basis of the analogue interconnection between the player of source disc and the recording device such as VHS recorder, DVD recorder or PC.
CSS
Content Scrambling System
Is DRM (Digital Rights Management) schema used for the protection of DVD with the DVD-Video content.
This system of protection permits the reproduction of the DVD content only in an authorized player. It does not enable to copy the data containing the image material on another carrier and to reproduce them from this carrier. The protection is provided by means of the encryption of data, which can by played on the device, such as a physical or software DVD player, the licence of which is registered, and which contains an appropriate set of the decoding means. There is encrypted the access both to the disc itself and to the particular parts of disc, or to particular sections of data containing the image.