Near-field optical recording apparatus, method and medium
US8179746B2 · kind B2 · utility
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1References
6Claims
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Key dates
| Filing date | Sep 14, 2010 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/1387
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus, a method and a recording medium for optical near-field recording are proposed. The apparatus includes a light source for generating a reading light beam, which is illuminated onto a near-field optical recording medium. The apparatus further includes a detector for generating a gap error signal from a light beam returning from the near-field optical recording medium. A data signal is derived from an output signal of the detector by a signal processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.