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Data transmission
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Patent number 6,094,461
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Issue date Jul 25, 2000
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British Telecommunications public limited company
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Andrew Peter Heron
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Video coder
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Patent number RE34824
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Issue date Jan 10, 1995
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British Telecommunications public limited company
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David G. Morrison
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348 - Television
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Data encoding
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Patent number 5,371,811
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Issue date Dec 6, 1994
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British Telecommunications public limited company
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David G. Morrison
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Video coder
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Patent number 4,985,766
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Issue date Jan 15, 1991
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British Telecommunications public limited company
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David G. Morrison
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H04 - ELECTRIC COMMUNICATION TECHNIQUE