发明名称 |
Magnetic video signal reproducing apparatus with correction of phase rotation |
摘要 |
An apparatus for reproducing video signals from a magnetic recording medium using first and second magnetic heads mutually having different azimuth angles. Here, the video signal is obtained by frequency-multiplexing of a low frequency-converted chrominance signal which is obtained by converting into a low frequency range and phase rotation of a chrominance signal per horizontal scanning period, and a modulated luminance signal, and recorded in the magnetic recording medium. One of video signals picked up by the magnetic heads is selected to obtain a chain of reproduced video signal. Discontinuity is detected if there is in the phase rotation of the low frequency-converted chrominance signal in the reproduced video signal. The low frequency-converted chrominance signal in the reproduced video signal is reconverted into a high frequency range chrominance signal having no phase rotation. The phase rotation of the low frequency-converted chrominance signal in the reproduced video signal is forcibly corrected when the discontinuity is detected in the phase rotation.
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申请公布号 |
US5416599(A) |
申请公布日期 |
1995.05.16 |
申请号 |
US19930015026 |
申请日期 |
1993.02.05 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
UBUKATA, TSUNEO;TAKESHITA, HIROSHI |
分类号 |
H04N5/783;H04N9/84;H04N9/89;H04N9/896;(IPC1-7):H04N9/89 |
主分类号 |
H04N5/783 |
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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