发明授权
US3911483A Apparatus and method for recording and reproducing a video signal in successive record tracks on a record sheet without guard bands between adjacent tracks
失效
用于在记录纸上的连续记录轨道中记录和再现视频信号而在相邻轨道之间没有保护带的装置和方法
- 专利标题: Apparatus and method for recording and reproducing a video signal in successive record tracks on a record sheet without guard bands between adjacent tracks
- 专利标题(中): 用于在记录纸上的连续记录轨道中记录和再现视频信号而在相邻轨道之间没有保护带的装置和方法
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申请号: US42584573申请日: 1973-12-18
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公开(公告)号: US3911483A公开(公告)日: 1975-10-07
- 发明人: KIHARA NOBUTOSHI , MACHIDA YUKIHIKO
- 申请人: SONY CORP
- 专利权人: Sony Corp
- 当前专利权人: Sony Corp
- 优先权: JP62173 1972-12-23
- 主分类号: H04N5/922
- IPC分类号: H04N5/922 ; G11B20060101 ; G11B5/027 ; H04N5/76 ; H04N5/781 ; H04N5/782 ; H04N5/91 ; H04N5/92 ; H04N9/80 ; H04N5/78 ; G11B5/22 ; G11B21/10
摘要:
Video signals are recorded in successive record tracks on a record sheet without guard bands or spaces between adjacent tracks so as to enhance the utilization of the record sheet, and interference between the signals recorded in adjacent tracks is avoided during reproduction thereof by recording such video signals in adjacent tracks with their respective synchronizing signals aligned in the direction at right angles to the length of the tracks and further with carrier components of the signals recorded in the adjacent tracks being of the same frequency and having the same phase relation to the effective scanning direction during recording. During reproduction of the signals thus recorded, non-interfering signals recorded in two or more adjacent tracks are simultaneously reproduced, for example, as by a reproducing magnetic head having a gap width substantially greater than the pitch of the successive tracks in which the signals are magnetically recorded, so as to enhance the resolution and S/N ratio of the reproduced signals and further to avoid the necessity of a servo tracking arrangement.
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