发明名称 |
Overscan helical scan head for non-tracking tape subsystems reading at up to 1x speed and methods for simulation of same |
摘要 |
A helical scan drum design for use in non-tracking tape devices which assures 70% coverage of a track to be read by overscanning with at least two read heads at approximate 1x speed. The present invention further provides a simulation method for evaluating potential drum designs for such overscan applications. The preferred drum design uses pairs of like-azimuth read heads positioned on the rotating drum such that in combination they overlap the scan of a track by 130% the track width. These dimensions assure at least 70% coverage of each track by at least one of the pair of heads at up to 1x speed while assuring no overlap with another like-azimuth recorded track. The simulation method allows for evaluation of potential drum designs by accepting parameters describing the intended drum application and then simulating track read operations over a plurality of simulated tracks to determine the efficacy of the design over a range of tape speeds and gap widths. Designs that simulate successful reading of a sufficient threshold number of tracks over a sufficiently broad range of tape speeds may then be selected for further test and evaluation. |
申请公布号 |
AU1808000(A) |
申请公布日期 |
2000.05.08 |
申请号 |
AU20000018080 |
申请日期 |
1999.10.20 |
申请人 |
ECRIX CORPORATION |
发明人 |
KELLY J. BEAVERS;MICHAEL A. BLATCHLEY;DAVID L. DETRO;PAUL DUNN |
分类号 |
G11B5/53;G11B5/008;G11B15/18;G11B21/04;G11B33/10 |
主分类号 |
G11B5/53 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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