发明名称 |
Positioning system and formatting scheme for magnetic tape media |
摘要 |
A positioning system for a magnetic tape system that utilizes a multiple record recording format wherein positioning data that marks the beginning of record segments, the beginning of the tape medium, and the ending of the tape medium are pre-recorded at one-fourth of the bit density of work data so that positioning data may be more accurately read at a higher tape speed during a record seek mode of operation. The system also includes detector circuitry that is enabled only upon detecting positioning data and that identifies the positioning data as an inter-record mark signal, beginning of tape signal, or an ending of tape signal. A tape drive controller is responsive to the detection circuitry for controlling the speed and direction of the magnetic tape.
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申请公布号 |
US4321632(A) |
申请公布日期 |
1982.03.23 |
申请号 |
US19800148055 |
申请日期 |
1980.05.19 |
申请人 |
DIGITAL EQUIPMENT CORPORATION |
发明人 |
LEIS, MICHAEL D.;ROSE, ROBERT C. |
分类号 |
G11B15/02;G11B27/10;G11B27/30;(IPC1-7):G11B5/09;G11B15/18;G11B15/48 |
主分类号 |
G11B15/02 |
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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