Method and apparatus for storing decoded video information
First Claim
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1. In a method of decoding a video signal encoded in accordance with an MPEG standard which requires storing at least a portion of a B picture for later display, a method of storing video information comprising:
- dynamically compressing video information for at least a portion of said B picture; and
storing said dynamically compressed video information in a memory.
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Abstract
A decoded video signal which was encoded in accordance with a standard, such as MPEG-2, is encoded "on the fly" using a lossless linear predicted coding technique and stored in a compressed form in a RAM. A separate encoding technique is provided for B pictures and for I or P pictures. The compressed B pictures are decompressed for display. The compressed I or P pictures are decompressed for display or for use in decoding other P or B pictures.
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Citations
12 Claims
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1. In a method of decoding a video signal encoded in accordance with an MPEG standard which requires storing at least a portion of a B picture for later display, a method of storing video information comprising:
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dynamically compressing video information for at least a portion of said B picture; and storing said dynamically compressed video information in a memory. - View Dependent Claims (2)
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3. In a method of decoding a video signal encoded in accordance with an MPEG standard which requires storing at least a portion of an I or P picture for later decoding, a method of storing video information comprising:
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dynamically compressing video information for at least a portion of said I or P picture by encoding picture data utilizing a lossless predictive coding method on a local area by local area basis to generate encoded picture data, storing said dynamically compressed video information in a memory by storing said encoded picture data linearly in said memory; and generating and storing a pointer table of the beginning address of each local area.
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4. Apparatus for storing decoded video information of a video signal encoded in accordance with an MPEG standard which requires storing at least a portion of a B picture for later display comprising:
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a video signal processor for dynamically compressing video information for at least a portion of a reference picture; and a memory for storing said dynamically compressed video information. - View Dependent Claims (5)
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6. Apparatus for storing decoded video information of a video signal encoded in accordance with an MPEG standard which requires storing at least a portion of an I or a P picture for later decoding comprising:
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a video signal processor for dynamically compressing video information for at least a portion of a reference picture, said video signal processor comprising encoding means for encoding picture data utilizing a lossless predictive coding method on a local area by local area basis to generate encoded picture data; a memory for storing said dynamically compressed video information, said memory having said encoded picture data linearly stored; and means for generating and storing in said memory a pointer table of the beginning address of each local area.
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7. In a method of decoding a video signal encoded in accordance with an MPEG standard, a method of storing B picture information comprising the steps of:
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utilizing the decoded macroblock by macroblock picture data to generate data representative of a physical slice of said picture; encoding said physical slice data utilizing a lossless predictive coding method to generate encoded picture data; and storing said encoded picture data linearly in a memory.
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8. Apparatus for storing decoded video information for a B picture of a video signal encoded in accordance with an MPEG standard comprising:
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a video signal processor utilizing the decoded macroblock by macroblock picture data to generate data representative of a physical slice of said picture; an encoder encoding said physical slice data utilizing a lossless predictive coding method; and a memory storing said encoded picture data in a linear manner.
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9. In a method of decoding a video signal encoded in accordance with an MPEG standard, a method of storing I of P picture information comprising the steps of:
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encoding picture data utilizing a lossless predictive coding method on a block by block basis to generate encoded picture data; storing said encoded picture data linearly in a memory; and generating and storing a pointer table of the beginning of data for each individual block.
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10. Apparatus for storing decoded video information for an I or P picture of a video signal encoded in accordance with an MPEG standard;
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an encoder encoding picture data utilizing a lossless predictive coding method on a block by block basis to generate encoded picture data; A memory storing said encoded picture data in a linear manner; and
a processor generating and storing a pointer table of the beginning of data for each individual block.
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11. In a method of decoding a video signal encoded in accordance with a standard, a method of storing a picture for later display comprising the steps of:
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utilizing the decoded macroblock by macroblock picture data to generate data representative of a physical slice of said picture; encoding said physical slice data utilizing a lossless predictive coding method to generate encoded picture data; and storing said encoded picture data linearly in a memory.
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12. Apparatus for storing decoded video information for a picture of a video signal encoded in accordance with a standard for later display comprising:
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a video signal processor utilizing the decoded macroblock by macroblock picture data to generate data representative of a physical slice of said picture; an encoder encoding said physical slice data utilizing a lossless predictive coding method; and a memory storing said encoded picture data in a linear manner.
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Specification