发明名称 |
Digital video effects system employing a chroma-key tracking technique |
摘要 |
A chroma-key tracking system for electronically compressing a television picture to predetermined dimensions and for moving the compressed picture to a specified area on the television screen where the compressed picture is inserted into a second picture present on the screen. The chroma-key tracking system advantageously operates in the presence of electrical noise associated with the chroma-key tracking signal.
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申请公布号 |
US4200890(A) |
申请公布日期 |
1980.04.29 |
申请号 |
US19780922634 |
申请日期 |
1978.07.07 |
申请人 |
NIPPON ELECTRIC CO LTD |
发明人 |
INABA, MASAO;KASHIGI, KAZUO |
分类号 |
H04N5/275;H04N9/75;(IPC1-7):H04N5/22;H04N9/53 |
主分类号 |
H04N5/275 |
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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