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Method of and apparatus for recording and/or reproducing a current digital video signal and a high-definition digital video signal in a common track format
Method of and apparatus for recording and/or reproducing a current digital video signal and a high-definition digital video signal in a common track format
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机译:用于以公共轨道格式记录和/或再现当前数字视频信号和高清数字视频信号的方法和装置
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摘要
A digital magnetic recording method, recording apparatus, reproducing apparatus, and recording/reproducing apparatus for recording and/or reproducing a current digital video signal and a high-definition (HD) digital video signal in a common track format on a recording tape using rotary heads. In recording, the current digital video signal is compressed to a specified amount of data, the HD digital video signal is compressed to n (n is an integer of 2 or larger) times the amount of data of the compressed current digital video signal, and when recording the current digital video signal, digital audio signals of m (m is an integer of 2 or larger) channels are multiplexed with the current digital video signal in time division, and the multiplexed signal is azimuth-recorded with k (k is an integer of 2 or larger) magnetic heads on k tracks in every one revolution of the rotary drum, and when recording digital audio signals of n×m channels are multiplexed with the HD digital video signal in time division, the transportation speed of the magnetic tape is made n times the tape transportation speed in recording the current digital video signal, and the multiplexed signal is recorded by azimuth recording with n×k magnetic heads on n×k tracks in every one revolution of said rotary drum.
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