发明名称 |
Key signal processing apparatus for video signal processing |
摘要 |
A key signal processing apparatus for video signal processing including a signal delay circuit for successively delaying by 1 clock units a key input signal, used for applying a special effect to a video signal, and outputting the delayed key signal; a signal selection circuit for receiving the key input signal and a plurality of delayed key signals output from the signal delay circuit and selecting based on a selection control signal two pairs of signals in predetermined relationships of delay; a first signal interpolation circuit for performing signal interpolation on the first pair output from the signal selection circuit using a first coefficient; a second signal interpolation circuit for performing signal interpolation on the second pair output from the signal selection circuit using a second coefficient; and a signal synthesization circuit for combining a signal from the output of the first signal interpolation circuit and the output of the second signal interpolation circuit and outputting it as a key signal for video signal processing.
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申请公布号 |
US5929934(A) |
申请公布日期 |
1999.07.27 |
申请号 |
US19970933580 |
申请日期 |
1997.09.19 |
申请人 |
SONY CORPORATION |
发明人 |
NAKASAKA, CHIKATOMO;TAKAMORI, TSUTOMU |
分类号 |
H04N5/262;H04N5/275;(IPC1-7):H04N9/74 |
主分类号 |
H04N5/262 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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