Compensating write data in transformer-coupled recording system using DC content code
US6433945B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Nov 9, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/0086
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transformer-coupled tape drive (30) allows operation using a direct current (DC) content code. Usage of the DC content code is facilitated by a compensation circuit (240) which corrects timing distortion caused by the DC content code. The compensation circuit comprises both an emulation circuit (306) and a delay circuit (302). The emulation circuit (306) emulates a high pass filter action of a transformer (220) to provide an emulated high pass filter response signal (WD_HP). The delay circuit (302) modifies the modify timing of the write data signal in accordance with the emulated high pass filter response signal to output a compensated write data signal to the transformer (220).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.