Holographic data storing method and storing device
US8154974B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2009 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Aug 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2504
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A holographic data storing method includes the steps of: encoding original data to generate holographic data according to a codeword to symbol relation; and recording a hologram corresponding to the holographic data onto a holographic storage medium. In the codeword to symbol relation, a plurality of sample symbols corresponds to a plurality of codewords. Each of the sample symbols corresponds to a pattern having N*N pixels. There are M bright pixels in the N*N pixels, wherein N and M are positive integers and M is smaller than N*N. A hamming distance of the sample symbols is greater than or equal to 4, and a two-dimensional run-length of the sample symbols is greater than or equal to 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.