Method and apparatus for generating stereoscopic images from a DVD disc
A system and method described herein provide stereoscopic video using standard DVD video data combined with enhancement data. In various embodiments, the enhancement data may be stored on the same DVD as the standard video, or provided via downloading and/or streaming to a stereoscopic DVD player. When stored on the DVD, the enhancement data is provided in various forms, including MPEG (-1 or -2) program Stream level; or the MPEG elementary stream level. In one embodiment, the enhancement data consists of a difference signal between left- and right-eye images taken on a pixel-by-pixel basis.
1. An apparatus generating a stereoscopic video signal comprising:
a read member receiving an optical disc and reading standard video data from said optical disc;
an input device receiving enhancement data;
a combiner coupled to said read member and said input device and combining said standard video data and said enhancement data to generate said stereoscopic video signal; and
a network interface exchanging information with a remote server, wherein said input device is coupled to said network interface to receive said enhancement data.
2. The apparatus of claim 1 wherein said input device receives a data file with said enhancement data.
3. The apparatus of claim 1 wherein said input device receives a data stream, said enhancement data being part of said data stream.
4. A method of generating a stereoscopic video signal by a DVD player from an optical disc wherein said player includes a network interface for providing information exchange between said player and a remote server, said method comprising:
retrieving from said optical disc standard video data;
retrieving said enhancement data by said network interface;
receiving enhancement data by said player; and
combining the standard video data with said video data to generate said stereoscopic video signal.
5. The method of claim 4 wherein said enhancement data is presented as a data file.
6. The method of claim 4 wherein said enhancement data is streamed data.
7. A player capable of playing discs with either 2D or 3D signals comprising:
two decoders reading data from a disc and generating from said disc a standard and an enhanced signal, respectively;
wherein one decoder reads left-eye images and the second detector reads images corresponding to a difference between left- and right-eye images, on a pixel-by-pixel basis.
8. The player of claim 7 further comprising a flag-detector detecting a 3D flag indicative of whether a disc contains only 2D signals, or 3D signals.
9. The player of claim 7 wherein said enhancement signal is preprocessed before storage on the disc and wherein one of said decoders performs an inverse process on said enhancement signal to reverse said preprocessing.
10. The player claim 9 wherein said one decoder includes a lookup table for said inverse process.