发明名称 |
Magnetic recording and reproducing apparatus which replaces an inserted audio signal with a preceding field of a reproduced FM video signal |
摘要 |
A magnetic recording and reproducing apparatus wherein synchronizing separation of a reproduction video signal can be performed accurately and a stabilized reproduction video signal can be obtained. The magnetic recording and reproducing apparatus includes a switch device for selectively inserting, upon recording, a PCM modulated audio signal into a blanking period of an FM modulated video signal, a PCM region signal generator for identifying a region of a PCM modulated audio signal in a reproduction signal reproduced by a rotary head and generating a control signal representative of a PCM audio signal region, an FM demodulator for FM demodulating a reproduction signal from the rotary head into a reproduction FM demodulation signal, and a clip circuit for clipping a lower end portion of a PCM audio signal region of a reproduction FM demodulation signal from the FM demodulator in accordance with a control signal generated from the PCM region signal generator.
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申请公布号 |
US5712948(A) |
申请公布日期 |
1998.01.27 |
申请号 |
US19950396430 |
申请日期 |
1995.02.28 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
YAMADA, MASAKO;KANEKO, HIDEKI;INOUE, SADAYUKI;OHKUMA, IKUO |
分类号 |
H04N5/781;H04N5/92;H04N5/926;H04N5/932;(IPC1-7):H04N5/92;H09N5/928 |
主分类号 |
H04N5/781 |
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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