Digital magnetic recording/reproduction apparatus and method
US4908722A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Jul 1, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital magnetic recording/reproduction apparatus and method for recording and reproducing a digital information signal. The apparatus comprises a magnetic head, a recording system means for recording the digital information signal and a calibration signal with a specific digital pattern in a magnetic recording medium, through the same signal path, a reproduction system for reproducing the recorded digital information signal and the recorded calibration signal, through the same signal path, and for outputting a reproduced signal, a waveform equalizer for equalizing a waveform of the reproduced signal, a data discriminator for discriminating a data signal from the signal output from the waveform equalizer, by using a window signal, and a calibration system for controlling a characteristic of the waveform equalizer and/or the recording current supplied to the magnetic head so as to maximize a window margin of the data discriminating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.