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| April 27, 1998 |
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| December 27, 1996 |
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| July 10, 1997 |
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| September 18, 1997 |
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| August 13, 1997 |
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| February 21, 1997 |
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| August 13, 1997 |
| 5949488 | Video signal encoding system controller
| December 27, 1996 |
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| July 25, 1995 |
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