Data sector/servo split generator for a disk drive
US6122121A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data sector/servo split generator is disclosed for a disk drive apparatus implementing a zone bit recording format and having an embedded sector servo system where servo sector fields split at least one data field on a surface of a disk in the disk drive apparatus. A first counter is provided to count an amount of time to the beginning of a data field, and a first signal (SECTOR) is generated to indicate when the beginning of a data field is encountered by a read/write head in the disk drive. A second signal (SPLIT.sub.-- VALID) is generated by the data sector/servo split generator if a next data field after the generation of the SECTOR signal is split by a servo sector field. A second counter counts a predetermined number of data bytes transferred between a surface of a disk in said disk drive apparatus and said disk controller, so that a third signal (SPLIT) is generated, the SPLIT.sub.-- VALID signal is generated, when a servo sector is encountered in a data field by the read/write head. The SECTOR and SPLIT signals are supplied to a disk controller which uses those signals to control the transfer of data to and from the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.