发明名称 |
Color video signal dubbing system for collating the outputs of signal sources |
摘要 |
A color video signal dubbing system comprises a reproducing apparatus and a recording apparatus. The recorded signal is a multiplexed signal of a frequency-modulated luminance signal obtained as the result that a luminance signal separated from the color video signal frequency-modulates a carrier wave to occupy a predetermined frequency band and a frequency-converted carrier chrominance signal obtained by frequency-converting a carrier chrominance signal having a color burst signal which is separated from the color video signal to a band lower than that of the predetermined frequency band. The reproducing apparatus comprises a separation circuit for separating the signal reproduced by the reproducing apparatus into the frequency-modulated luminance signal and the frequency-converted carrier chrominance signal, a level adjusting circuit for adjusting the level of the frequency-converted carrier chrominance signal separated by the separation circuit so that the color burst signal is held to a constant level, a frequency characteristic compensation circuit for compensating for the degradation in the frequency characteristic of the frequency-modulated luminance signal, introduced upon recording and reproducing processes of the frequency-modulated luminance signal separated by the separation circuit, amplitude limiting circuit for limiting the amplitude of the output frequency-modulated luminance signal of the frequency characteristic compensation circuit, and a mixing circuit for mixing the output frequency-modulated luminance signal of the frequency characteristic compensation circuit with the output frequency-converted carrier chrominance signal of the level adjusting means.
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申请公布号 |
US4396953(A) |
申请公布日期 |
1983.08.02 |
申请号 |
US19800210155 |
申请日期 |
1980.11.25 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
FUJITA, MITSUO;NEGISHI, KAZUO;ONAKA, SHIGENORI |
分类号 |
H04N5/91;H04N5/931;H04N9/793;H04N9/83;(IPC1-7):H04N9/49;H04N5/78 |
主分类号 |
H04N5/91 |
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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