Miniature disk drive having embedded sector servo with split data fields and automatic on-the-fly data block sequencing
US5517631A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1993 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Jul 7, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2508
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A programmable data sequencer transfers fixed length data blocks between variable length storage segments of a magnetic storage disk and a buffer memory within a data storage device. The data sequencer includes a stack memory for holding user byte count values read from a header field preceding each data sector having variable length split storage segments. Each byte count value indicates respective length of a following variable length storage segment, so that the storage capacity of each segment is dynamically determined by the data sequencer in real time by popping the user byte count value from the stack into a storage segment length counter and by counting down the count value within the segment length counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.