Diamond shaped holographic storage regions oriented along a common radial column line for higher storage density
US5566387A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1994 |
| Grant date | Oct 15, 1996 |
| Priority date | — |
| Expiry date | Jun 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2260/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk-based holographic storage media includes a disk fabricated from a holographic storage media. A plurality of holographic storage regions are defined within the storage media such that pages of holographic data can be stored therein in the form of an interference grating. A Read/Write head is provided for containing the optics necessary to read information from the holographic storage region and write information thereto. The Read/Write head moves along the radial direction of the disk with the disk stepped by a motor to discrete angular positions, comprising the address of the storage region along with radial positioning of the Read/Write head. Each of the storage regions is diamond-shaped and oriented such that the apexes thereof are oriented along a common radial column line. Adjacent columns have the storage regions disposed in alternating rows or tracks. This allows for a higher packing density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.