发明授权
US5568327A Method for determining the tape position using dedicated servo format
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使用专用伺服格式确定磁带位置的方法
- 专利标题: Method for determining the tape position using dedicated servo format
- 专利标题(中): 使用专用伺服格式确定磁带位置的方法
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申请号: US338085申请日: 1994-12-07
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公开(公告)号: US5568327A公开(公告)日: 1996-10-22
- 发明人: Per O. Pahr , Steinar J. Strand , Erik Solhjell
- 申请人: Per O. Pahr , Steinar J. Strand , Erik Solhjell
- 申请人地址: NOX Oslo
- 专利权人: Tandberg Data AS
- 当前专利权人: Tandberg Data AS
- 当前专利权人地址: NOX Oslo
- 优先权: EPX92108079 19920513
- 主分类号: G11B5/55
- IPC分类号: G11B5/55 ; G11B5/584 ; G11B20/18 ; G11B5/09 ; G11B21/04
摘要:
Servo track pair position and longitudinal tape position is determined for a tape using dedicated servo format. The tape includes at least one set of data tracks and dedicated servo tracks wherein adjacent servo tracks are defined by longitudinal lines through the edges of erased or non-recorded tape portions. The information about servo track pair numbers and/or servo sample numbers is recorded into portions of the tape and is decoded and read back together with signals from the servo track. The information is recorded in a digital manner by using a digital block format of data blocks requiring less bytes per block than a data block provided on the data tracks. If information about longitudinal tape position is not required, information may be recorded in an analog manner using a fixed set of predetermined frequencies.
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