Patent ID: 7784103
Filing Date: 2010-08-24
Classification: G11B

Abstract:
1. An apparatus, comprising: a mechanism for playing a recording medium, the recording medium having storable thereon a digital content file and a copy protection information file, the mechanism to produce a digital content signal from the digital content file and to obtain a copy protection signal comprising a digitized analog copy protection waveform including a pulse pair signal from the copy protection information file; a signal modifier to add the digitized analog copy protection waveform to the digital content signal to produce a modified digital content signal; a digital to analog converter to receive the modified digital content signal from the signal modifier and to produce a viewable copy protected analog signal having embedded therein an analog copy protection signal; and a copy protection detector, coupled to the mechanism, for detecting a copy protection trigger present in the digital content signal, wherein the signal modifier is coupled to the copy protection detector to enable the signal modifier to produce the modified digital content signal in response to the detection of the copy protection trigger in the digital content signal.