Tape positioning using reverse boundary capture: tape drive system and method
US4821129A · kind A · utility
41Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1986 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Nov 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tape driven system includes means for capturing data block boundaries while moving in reverse, as well as in the forward direction. Thus, block boundaries can be captured following each reversal of tape direction to cancel prior errors induced during tape reversals provided these errors are within tolerance. In a hitch operation, the rear boundary of a data block is recaptured as a reference position for the next forward operation. In a backspace operation, the front boundary of a data block is captured while the tape is moving in the reverse direction to provide a reference point for the next operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.