| 摘要 |
The invention provides a method and apparatus for coding information (<FIGREF IDREF="DRAWINGS">FIG. 5</FIGREF>) that is specially adapted for smaller presentation formats, such as in a hand held video player (<FIGREF IDREF="DRAWINGS">FIG. 1</FIGREF>). The invention addresses, inter alia, reducing the complexity of video decoding ( 55 ), implementation of an MP3 decoder ( 56 ) using fixed point arithmetic, fast YcbCr to RGB conversion, encapsulation of a video stream and an MP3 audio stream into an AVI file, storing menu navigation and DVD subpicture information on a memory card, synchronization of audio and video stream, encryption of keys that are used for decryption of multimedia data (<FIGREF IDREF="DRAWINGS">FIG. 3</FIGREF>), and very user interface (UI) adaptations for a hand held video player that implements the improved coding invention herein disclosed.
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