Method of storing data on recording tape
US5029022A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 5, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Jan 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/913
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for effecting update-in-place of data that has been recorded on tape in oblique tracks using a helical-scan recording technique. The data to be updated is recorded in a block of M tracks lying between first and second continuum each at least of N tracks where N is the worst-case number of tracks required to achieve head/track alignment. The block of M tracks comprises a first series of at least N tracks, a second series of tracks containing the data, and a third series of at least P tracks. When updating the data, the block is rewritten as a whole in a single continuum with the first track of the block being written within a distance of P tracks from the last track of the first continuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.