发明授权
- 专利标题: Apparatus and method for controlling recording and reproduction in digital video cassette tape recorder
- 专利标题(中): 用于控制数字录像带录音机中记录和再现的装置和方法
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申请号: US227281申请日: 1994-04-13
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公开(公告)号: US5587789A公开(公告)日: 1996-12-24
- 发明人: Je H. Lee , Soo K. Kim , Sang J. Woo , Tae S. Yang
- 申请人: Je H. Lee , Soo K. Kim , Sang J. Woo , Tae S. Yang
- 申请人地址: KRX Seoul
- 专利权人: Goldstar Co. Ltd.
- 当前专利权人: Goldstar Co. Ltd.
- 当前专利权人地址: KRX Seoul
- 优先权: KRX6441/1993 19930416
- 主分类号: G11B20/10
- IPC分类号: G11B20/10 ; G11B5/008 ; G11B5/02 ; G11B5/09 ; G11B15/12 ; G11B15/18 ; G11B15/467 ; G11B15/48 ; G11B15/52 ; G11B20/12 ; G11B27/00 ; G11B27/10 ; G11B27/30 ; G11B27/32 ; H04N5/76 ; H04N5/7826 ; H04N5/783 ; H04N5/91 ; H04N5/92 ; H04N5/926 ; H04N5/93 ; H04N9/79 ; H04N9/797 ; H04N9/804 ; H04N9/82
摘要:
An apparatus and method for controlling recording and reproduction in a video cassette tape recorder are disclosed apparatus is capable of, in a recording mode, separating specific data for speed-varied reproduction from compressed digital video signals, recording them on designated tracks, recording position information of the designated tracks on a control track by an index head or recording position information of recording position-synchronized blocks at the starting portions of the designated tracks recorded with the specific data, and in a speed-varied reproduction mode, controlling a capstan servo speed so as to maintain the travel of a magnetic tape at a normal speed and periodically or non-periodically accelerate or decelerate it where specific data for varied-speed have been recorded periodically or non-periodically on predetermined portions of tracks, thereby making heads travel repeatedly at the normal speed and the high speed and thereby detect continuously the specific tracks for varied-speed. A repeatability of reproduced video at a varied speed is obtained without any deterioration in picture quality, because of recording of the specific data for speed-varied reproduction and the continuous detection of the specific data in the speed-varied reproduction.
公开/授权文献
- US4864279A Warning device activated by a key left in a lock 公开/授权日:1989-09-05
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