Angular-Multiplexing architecture (Holographic Storage)

A very interesting article from Ken Wood from HDS (thank you) on the topic of Holographic Storage.

A recent article by The Register’s Chris Mellor was passed my way by a colleague, at a perfect time. I was planning to post a blog this week on Hitachi’s contribution to the world of optical and holographic storage, but I didn’t know how I was going to introduce the subject.

Chris has just given me the angle I need. I have written a couple of pieces here and there about optical storage and somewhat knocked the holographic commercialization efforts by InPhase, mainly due to the events in February 2010.

In these blog posts, I also mentioned some of the R&D breakthroughs Hitachi contributes to the optical storage industry and the advancement of Blu-ray^TM technology through Hitachi’s HLDS division. However, through Hitachi’s Central and Yokohama Research Labs, Hitachi is a major contributor to the advancement of holographic storage – true holographic storage.

What I mean by “true” holographic storage (versus the implied “not true” holographic storage) is the method of how a unit of information is actually recorded and read from the media. In the true holographic storage architecture, the smallest unit imprinted on the media is a page (essentially, a hologram). Today that page is approximately 1 mega-pixel in size and is used in Hitachi’s Angular-Multiplexing architecture, whereas the Micro-Holographic architecture used in GE’s approach is still based on a bitwise recording method. Translation: one unit of data written or read with the Angular-Multiplexing architecture results in a 1 megapixel transfer, whereas in the Micro-Holographic architecture the smallest unit written or read is still a bit. Read on here

Posted by rogerluethy on August 10, 2011

https://rogerluethy.wordpress.com/2011/08/10/angular-multiplexing-architecture-holographic-storage/