发明授权
US5408505A Method and apparatus for process control, tension control, and testing
of magnetic media
失效
用于过程控制，张力控制和磁性介质测试的方法和设备
- 专利标题： Method and apparatus for process control, tension control, and testing of magnetic media
- 专利标题（中）： 用于过程控制，张力控制和磁性介质测试的方法和设备
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申请号： US145943申请日： 1993-10-29
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公开(公告)号： US5408505A公开(公告)日： 1995-04-18
- 发明人: Ronald S. Indeck , Marcel W. Muller
- 申请人： Ronald S. Indeck , Marcel W. Muller
- 申请人地址： MO St. Louis
- 专利权人： Washington University
- 当前专利权人： Washington University
- 当前专利权人地址： MO St. Louis
- 主分类号： G06F1/00
- IPC分类号： G06F1/00 ; G06F21/00 ; G06K1/12 ; G06K7/015 ; G06K19/12 ; G07F7/08 ; G07F7/12 ; G11B5/596 ; G11B15/43 ; G11B15/62 ; G11B20/00 ; G11B21/10 ; G11B23/28 ; H04L9/00
摘要：
A method and apparatus is disclosed for using the remanent noise of a magnetic medium as a fingerprint for benchmark testing of the magnetic medium as it is both manufactured and used. A cross-correlation is made between the fingerprint at various times as the magnetic medium is manipulated and is indicative of the integrity thereof. This cross-correlation media may be used to control manufacturing and recording processes, including tape tensioning and channel equalization. This cross-correlation between fingerprints can be used to control the tension applied to a thin film magnetic medium during record and/or playback.
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