Holographic Cubes

We are used to round data storage media. Records, CDs, DVDs... all round. However, holographic data storage media does not have to spin. This gives media designers much greater flexibility in what shapes to use. They may use holographic disks, particularly at first, but in the long run holographic cubes may dominate because they are more space efficient for storage - not having the dead space between circles that is characteristic of disk-shaped media. compact disk and DVD science and equipment have limitations. The compression of storage on the surface of information media is approaching a basic physical limit. Holotech information storage is a new method of information coding and signal processing. Holographic data storage can save information, a megabyte at once, by saving a whole page of data at once within the thickness of the encoding media. When one shines a reference beam with identical wavelength and at the same angle used to imprint the holotechnology picture in the recordable media, then the hologram encoded in the media diffracts the beam and recreates the original data ray. This ray is then convertd into electromagnetic pulses for computer analysis. Wavelength severalxing makes it possible for several pictures to be recorded and restored from the same media by changing the wavelength of the reference laser beam. See also: holodisks and holocubes has additional information on this topic.

With surface data storage means, storage density is inversely proportional to the square of the laser wave phase, but with holotechnology information recording throughout the volume of the media, storage density is proportional to the cube of the wave phase. A pixelated input device called a Spatial Light Modulator is used to convert electronic data into light beam variation so that the information may be saved as a holotechnology image in optically sensitive media. One form of Spatial Light Modulator is a liquid crystal display. With holotechnology information storage, the saved images are frequently angle multiplexed. Angle manyxing involves overlapping pictures within media so that they may be accessed independently by changing the reference ray angle. coherent light and holography also has interesting notes about this.

Holographic data recording and playback also have the possible uses for greater ability to recover from a couple errors. Holographic data may be more continuous and less discrete than its magnetic counterpart, so that errors are not 0-or-1 events but smoothly continuous. In this respect, holographic information recording and playback helps computing systems to act more like the human brain than computing systems with traditional magnetic media. Info on access speed for holographic data storage .

When holotechnology information can only be recorded once in photosensitive media, then the storage media is "Holotech ROM" (HoloROM). When holographic information can be frequently retrieved and changed in real time, then the media is "Holographic Random-Access-Memory" (HoloRAM). storing thousands of megabytes of data three-dimensionally also may be of interest.