发明授权
US4600952A Helical scan video tape recorder with auxiliary heads for blur free high
speed reproduction pictures
失效
带辅助头的螺旋扫描录像机,用于无模糊高速再现图像
- 专利标题: Helical scan video tape recorder with auxiliary heads for blur free high speed reproduction pictures
- 专利标题(中): 带辅助头的螺旋扫描录像机,用于无模糊高速再现图像
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申请号: US697894申请日: 1985-02-01
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公开(公告)号: US4600952A公开(公告)日: 1986-07-15
- 发明人: Kouichi Igata , Yoshihiro Deguchi , Masaaki Kobayashi
- 申请人: Kouichi Igata , Yoshihiro Deguchi , Masaaki Kobayashi
- 申请人地址: JPX Kadoma
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX Kadoma
- 主分类号: G11B5/008
- IPC分类号: G11B5/008 ; G11B5/53 ; G11B15/14 ; G11B15/18 ; H04N5/783
摘要:
In a video tape recorder of the helical scan type, two auxiliary magnetic heads having different azimuth angles are provided in the vicinity of two main magnetic heads. The main and auxiliary magnetic heads have their tracks aligned so as to compensate for the reduced period of the reproduction signal of the main magnetic heads during high speed reproduction by using the reproduction signals of the auxiliary magnetic heads. Thus, blur free high speed reproduction pictures may be realized, and, at the same time, a dancing picture correction during still reproduction may be facilitated.