Disk drive system and control circuitry adapted for downward compatibility
US6239934A · kind A · utility
Inventors
Key dates
| Filing date | Jul 6, 1998 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/031
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A higher-capacity disk drive system and a higher-capacity removable disk cartridge adapted for downward compatibility with older, lower-capacity disk drive systems, wherein a unique control information format is stored on higher-capacity removable disk cartridges to distinguish them from older, lower-capacity removable disk cartridges and thereby to facilitate cartridge capacity recognition by the higher-capacity disk drive system. Upon recognizing the capacity of an inserted removable disk cartridge, the higher-capacity disk drive system can read and write data to the removable disk cartridge such that data which it stores on a lower-capacity removable disk cartridge may be read by lower-capacity disk drive systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.