Methods and apparatus for encoding and decoding an audio and/or video signal, and a record carrier used therewith or produced therefrom
AssigneeU.S. Philips Corporation
InventorsWiebe De Haan, Jan Van Der Meer
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Abstract
Methods and apparatus for encoding and decoding an audio and/or video signal, and a record carrier for use with such apparatus. One or more audio and/or full motion video signals, e.g., a video signal, and possibly computer data) are recorded on an interactive compact disc. The video signal is encoded into code blocks of variable lengths, each corresponding to a picture or picture pair. A decoder delay time parameter is associated with one or more of the code blocks, which parameter represents a length of time (i.e., a delay time) with which the corresponding picture of a code block is to be displayed after that code block has been received by a decoding apparatus.
Claims37
A method for encoding an audio and/or video signal, the method comprising:
- encoding successive portions of the audio and/or video signal into corresponding successive code blocks;
- determining a delay time parameter for at least one code block of the code blocks, which delay time parameter indicates how long after the code block has been received by a decoding device it is to be decoded;
- and
- inserting the delay time parameter into the code block.
An apparatus for encoding an audio and/or video signal, the apparatus comprising:
- an encoder which encodes successive portions of the audio and/or video signal into corresponding successive code blocks;
- a paramater determining unit which determines a delay time parameter for at least one code block of the code blocks, which delay time parameter indicates how long after the code block has been received by a decoding device it is to be decoded;
- and
- an inserting unit which inserts the delay time parameter into the code block.
A record carrier, including:
- successive code blocks representing successive portions of an audio and/or video signal;
- and
- a delay time parameter for at least one code block of the code blocks indicating how long after that code block is obtained by a decoder it is to be decoded.
A method for decoding an audio and/or video signal which has been encoded into corresponding successive code blocks, the method comprising:
- obtaining the code blocks and a delay time parameter for at least one code block of the code blocks, which delay time parameter indicates how long after the code block has been obtained it is to be decoded;
- and
- decoding the code blocks in a manner whereby the decoding of the code block is delayed with respect to when it is obtained for a period of time indicated by the delay time paramater.
An apparatus for decoding an audio and/or video signal which has been encoded into corresponding successive code blocks, the apparatus comprising:
- receiving means for receiving the code blocks;
- parameter obtaining means for obtaining a delay time parameter for at least one code block of the code blocks, which delay time parameter indicates how long after the code block has been received it is to be decoded;
- and
- means for decoding the code blocks in a manner whereby the decoding of the code block is delayed with respect to when it is obtained for a period of time indicated by the delay time paramater.
Dependencies are inferred from the claim text.