发明名称 MAGNETIC RECORDING DEVICE
摘要 PURPOSE:To prevent the deterioration in a reproduced picture quality in duplicated write by using another head gap having a different azimuth angle to head gap for recording and in which the track width is set to a small value as an erasing head. CONSTITUTION:A signal recorded already is erased by duplicated recording to a track part of a part of width of a video track recorded already by rotaty heads HB, HAis proceeding ahead rotary heads H1, H2 for inserting or consecutive recording and a signal is recorded on an insert recording track by the rotary heads H1, H2 including the duplicated track. Since a frequency modulating luminance signal recorded by the rotary heads HB, HA has a high frequency and is a signal recorded by the rotary heads having a different azimuth angle from that of the reproducing head, then the signal is not almost reproduced by the azimuth loss effect, sufficient erasing effect is obtained and the reproduced picture quality is improved.
申请公布号 JPS59138173(A) 申请公布日期 1984.08.08
申请号 JP19830011661 申请日期 1983.01.27
申请人 NIPPON VICTOR KK 发明人 NAMIKI KOUSHIN
分类号 H04N5/7826;G11B5/02;G11B5/027;G11B5/265;G11B5/53;G11B27/029;G11B27/036;H04N5/782 主分类号 H04N5/7826
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