Holographic multiplex recording method
US7518972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2004 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | May 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A holographic multiplex recording method is provided in which remaining dynamic range in each recording area is made more uniform upon holographic multiplex recording. In this holographic recording method, a first-stage recording spot row RX1 is formed by arranging recording spots RS in an X-axis direction without overlapping, and then a second-stage recording spot row RX2 formed of the recording spots RS without overlapping in the X-axis direction is recorded in a position for shift multiplex recording in a Y-axis direction. This is repeated to form a Y-axis direction first multiplex recording spot matrix TYX1. In this case, recording is performed to all recordable regions without shift multiplex recording in the X-axis direction. Subsequently, a Y-axis direction second multiplex recording spot matrix TYX2 is formed in a position shift-multiplexed in the X-axis direction with respect to the first-stage recording spot row RX1 initially recorded. The shift multiplex recording in the X-axis direction is performed in a similar manner up to a Y-axis direction last multiplex recording spot matrix TYXn to thereby complete the recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.