Optical recording medium
An optical recording medium is described having a grooved recording layer. The structure of unwritten tracks must enable a scanning device to derive a radial tracking error signal according to the push-pull method. The structure of the written tracks must enable the scanning device to derive a radia...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
21.09.2001
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| Edition | 7 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | An optical recording medium is described having a grooved recording layer. The structure of unwritten tracks must enable a scanning device to derive a radial tracking error signal according to the push-pull method. The structure of the written tracks must enable the scanning device to derive a radial tracking error signal according to the high-frequency phase-detection method. To this end the depth of the groove is in the range from 1/24 to 1/7 times the wavelength for scanning the recording medium, and the phase difference between a radiation beam reflected from a region on track in between written marks and from a mark. |
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| AbstractList | An optical recording medium is described having a grooved recording layer. The structure of unwritten tracks must enable a scanning device to derive a radial tracking error signal according to the push-pull method. The structure of the written tracks must enable the scanning device to derive a radial tracking error signal according to the high-frequency phase-detection method. To this end the depth of the groove is in the range from 1/24 to 1/7 times the wavelength for scanning the recording medium, and the phase difference between a radiation beam reflected from a region on track in between written marks and from a mark. |
| Author | SPRUIT, JOHANNES HENDRIKUS MARIA DUCHATEAU, JOHAN PHILIPPE WILLIAM BEATRICE |
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| Notes | Application Number: TW19970118670 |
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| Snippet | An optical recording medium is described having a grooved recording layer. The structure of unwritten tracks must enable a scanning device to derive a radial... |
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| Title | Optical recording medium |
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