发明名称 |
MAGNETIC RECORDING AND REPRODUCING DEVICE |
摘要 |
PURPOSE:To attain a natural reproduction state as well as the simultaneous reproduction in a recording mode by providing two pairs of magnetic heads to a rotary drum in a fixed state and therefore eliminating the time difference between the video and audio signals in a reproduction mode. CONSTITUTION:A rotary drum 8 is provided with a pair of a 1st magnetic heads 9A and 9B having azimuth angles adverse to each other and another pair of a 2nd magnetic heads 10A and 10B which can record signals at the position advanced by 2.5 fields from the 1st heads. A 180 deg. space is secured between these two pairs of heads, and the height difference H is secured be tween both pairs of heads so that the heads 9A and 9B can scan accurately the recording tracks of the heads 10A and 10B with a time difference equal to 2.5 fields. Thus it is possible to perform the simultaneous reproduction in a recording mode and an advance reproduction of audio signals for time base matching between the video and audio reproduction signals by means of a small number of heads set to the drum 8 in a fixed state.
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申请公布号 |
JPS61165804(A) |
申请公布日期 |
1986.07.26 |
申请号 |
JP19850005205 |
申请日期 |
1985.01.16 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
UMEE KAZUNORI |
分类号 |
G11B27/36;G11B5/008;G11B5/02;G11B5/027;G11B20/00 |
主分类号 |
G11B27/36 |
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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