发明授权
US4327430A Information signal recording medium of rotary type with overlapped tracks
失效
具有重叠轨迹的旋转式信息信号记录介质
- 专利标题： Information signal recording medium of rotary type with overlapped tracks
- 专利标题（中）： 具有重叠轨迹的旋转式信息信号记录介质
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申请号： US55752申请日： 1979-07-06
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公开(公告)号： US4327430A公开(公告)日： 1982-04-27
- 发明人: Yoshiyo Wada , Hisao Kinjo , Ichiro Ueno
- 申请人： Yoshiyo Wada , Hisao Kinjo , Ichiro Ueno
- 申请人地址： JPX Yokohama
- 专利权人： Victor Company of Japan, Ltd.
- 当前专利权人： Victor Company of Japan, Ltd.
- 当前专利权人地址： JPX Yokohama
- 优先权： JPX52-13322 19770209; JPX52-14438 19770212; JPX52-14870 19770214; JPX52-18056 19770223
- 主分类号： G11B7/0045
- IPC分类号： G11B7/0045 ; G11B7/007 ; G11B7/013 ; G11B7/09 ; G11B11/05 ; G11B21/10 ; G11B23/36 ; H04N5/80 ; G11B11/00
摘要：
An information signal recording medium of rotary type has a flat surface with successions of pits formed therein as respective concavities in response to an information signal. The successions of pits constitute respective circular tracks of a specific pitch. Each it is formed with a width, equal to the width of a track, which is substantially equal to or greater than said pitch of the track.
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