Embedded header for split data sectors in zoned bit recorded disc drives
US5754351A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1994 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Nov 22, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sectoring circuit (22) locates data storage sectors in data tracks(60, 62) on a rotating disc (24) of a data storage device (20) having a transducer head (30) positioned by a servo system (44, 36) relate to the rotating disc (24) for writing to and reading from the sectors. The servo system (44, 36) provides servo errors in response to the transducer head (30) passing over servo patterns (64) embedded in the rotating disc (24). The sectors are positioned in data wedges (70-80, 82-92) extending between respective pairs of servo patterns. A header (66, 68, 93) is stored on the rotating disc (24) and is associated with a data wedge. The sectoring circuit (22) locates the header in reference to a servo pattern to receive and store information from the header including an identification field identifying the header and offset fields indicating a distnbution of bytes for sectors split between data wedges. Control circuitry (176) locates the sectors based on values of the identification field and the offset fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.