发明名称 |
Method of and apparatus for reproducing an information signal. |
摘要 |
<p>A reproducing section of a helical scan VTR for reproducing a color television signal recorded in a plurality of successive parallel tracks on a magnetic tape and comprised of a video signal and at least one of a frequency-modulated audio signal and the combination of a PCM audio signal and run-in signal, with the video signal and frequency-modulated audio signal being recorded only in a main section of each track and the PCM audio signal being recorded only in an overscan section of each track, the VTR including a pair of magnetic heads which scan the tracks to reproduce the information signal recorded therein; a pair of switch circuits connectet to the heads and which separate the information signal reproduced during scanning of the main section of each track and a signal reproduced during scanning of the overscan section of each track; a detector which detects the presence or absence of a run-in signal from the separated signal reproduced during scanning of the overscan section of each track and produces a detection signal in response thereto; an output; and a switch for switching an analog audio signal reproduced from the PCM audio signal to the output in response to the detection signal when a run-in signal is detected and an analog audio signal reproduced from the frequency-modulated audio signal to the output in response to the detection signal when no run-in signal is detected.</p> |
申请公布号 |
EP0084969(A1) |
申请公布日期 |
1983.08.03 |
申请号 |
EP19830300326 |
申请日期 |
1983.01.21 |
申请人 |
SONY CORPORATION |
发明人 |
YONEYAMA, SHIGEYUKI;NAKANO, KENJI;MORIWAKI, HISAYOSHI;TAKAHASHI, TAKAO C/O SONY CORPORATION |
分类号 |
G11B20/00;G11B20/10;H04N5/926;H04N5/928;H04N9/82;(IPC1-7):04N5/76 |
主分类号 |
G11B20/00 |
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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