Method for generating a reference signal from unique servo mark pattern detection
US5293276A · kind A · utility
16Cited by
12References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1992 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Jan 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plurality of data sequences having patterns distinguishable from informational data are recorded as a servo mark portion of servo information on a disk. Upon decoding a predetermined number of these data sequences, a determination is made as to whether an accurately located servo mark has been detected. The detected servo mark provides a reference from which the beginning of recorded servo burst data can be located, thereby enabling all of the servo burst data to be read. The presence of defects does not inhibit the detection of the servo mark.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.