Patent ID: 8301014

Claim:
A non-transitory computer-readable medium encoded with computer-executable instructions, which are executed by a processor, comprising: a program management area or table of contents area, and a program area including an audio signal and/or a video signal; wherein an identification signal relevant to the video signal and/or audio signal is inserted therein only within a low signal level portion temporally before or after the detected high level portion of the video signal and/or audio signal in a predetermined time interval, wherein the identification signal includes noise-like bits that have identification information at a certain time width that compulsorily sets the least significant bits (LSBs) of an arbitrary number of samples of the video signal and/or audio signal as main data, wherein the identification signal is inserted into the video signal and/or audio signal in such a configuration as to be detectable on statistical processing of the video signal and/or audio signal; and wherein the identification signal is sequentially embedded into the main data.