Rotating storage device track format emulation
US4680653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | May 22, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1257
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method for recording a record that emulates a first recording format, which includes a track reference point, such as an index field, used for determining a position of a record on a track according to the first recording format, on a moving storage device operating according to a second recording format which also includes a track reference point. The invention comprises the steps, responsive to location information generated according to the first recording formats, of: PA0 (1) determining an original angular position of a record according to the first recording format; PA0 (2) calculating in response to the original angular position and a parameter a preferred angular position for the record according to the second recording format; PA0 (3) determining an actual angular position of the record recorded according to the second recording format; and PA0 (4) recording an extension of the record to compensate for the difference between the preferred angular position and the actual angular position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.