Whats APS and how DVD copy protection – macrovision works?
APS stands for “Analog Protection System”. APS is to control analog copying from digital transmission or digital copies of linear motion pictures. Macrovision has developed the APS technology designed to distort the unauthorized VCR copying made from DVD programs. When the DVD disc is played back, the encoded trigger bit in a disc activate a macrovision-enabled digital analog chip inside SiS6326DVD and then applies copy protection to the analog output of the DVD player. As a result, a recording made on such an analog video cassette recorder from an input signal that include macrovision-enabled APS signals, whten played back will display an image that appears severely dim or distorted..
