发明名称 |
CHROMA-KEY TRACKING DIGITAL VIDEO EFFECTS SYSTEM |
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 invention advantageously monitors the aspect ratio (the ratio of width to height of a picture frame) of the compressed picture and ensures that the compressed and inserted picture maintains a prescribed standard aspect ratio. |
申请公布号 |
AU3901578(A) |
申请公布日期 |
1980.02.21 |
申请号 |
AU19780039015 |
申请日期 |
1978.08.17 |
申请人 |
NIPPON ELECTRIC CO., LTD. |
发明人 |
MASAO INABA;KAZUO KASHIGI |
分类号 |
H04N5/272;H04N9/75 |
主分类号 |
H04N5/272 |
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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