From b87738296b38b9ee9cb21ccb03d69d2f477c20d7 Mon Sep 17 00:00:00 2001 From: India Creel Date: Sun, 19 Oct 2025 18:52:19 +0000 Subject: [PATCH] Update 'So how does HVD Stack Up?' --- So-how-does-HVD-Stack-Up%3F.md | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 So-how-does-HVD-Stack-Up%3F.md diff --git a/So-how-does-HVD-Stack-Up%3F.md b/So-how-does-HVD-Stack-Up%3F.md new file mode 100644 index 0000000..889a773 --- /dev/null +++ b/So-how-does-HVD-Stack-Up%3F.md @@ -0,0 +1,7 @@ +
Holographic memory methods have been round for many years. They provide far more storage capability than CDs and DVDs -- even "next-era" DVDs like Blu-ray -- and their transfer rates depart typical discs within the mud. So why haven't all of us been utilizing holographic memory for years now? There are a number of hurdles which have been holding holographic storage back from the realm of mass consumption, including value and complexity. Until now, Memory Wave the methods have required a value-prohibitive stage of precision in manufacturing. But recent changes have made the holographic versatile disc (HVD) developed by Optware a viable possibility for customers. The first step in understanding holographic memory is to understand what "holographic" means. Holography is a method of recording patterns of light to produce a three-dimensional object. The recorded patterns of gentle are called a hologram. The technique of creating a hologram begins with a focused beam of mild -- a laser beam.
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This laser beam is cut up into two separate beams: a reference beam, which stays unchanged throughout a lot of the method, and an data beam, which passes through an image. When gentle encounters a picture, its composition modifications (see How Gentle Works to find out about this process). In a way, once the data beam encounters an image, it carries that picture in its waveforms. When these two beams intersect, it creates a pattern of gentle interference. If you happen to document this pattern of mild interference -- for [MemoryWave Guide](https://chessdatabase.science/wiki/User:Tammi424304) instance, in a photosensitive polymer layer of a disc -- you might be primarily recording the sunshine pattern of the picture. When it reflects off the hologram, it holds the light pattern of the picture stored there. You then ship this reconstruction beam to a CMOS sensor to recreate the original image. Most of us consider holograms as storing the image of an object, like the Loss of life Star pictured above.
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The holographic memory techniques we're discussing right here use holograms to retailer digital instead of analog data, however it's the identical idea. As an alternative of the knowledge beam encountering a sample of gentle that represents the Death Star, it encounters a pattern of gentle and darkish areas that symbolize ones and zeroes. HVD affords several advantages over conventional storage expertise. HVDs can finally store greater than 1 terabyte (TB) of data -- that's 200 [instances](https://www.b2bmarketing.net/en-gb/search/site/instances) more than a single-sided DVD and 20 times more than a present double-sided Blu-ray. This is partly resulting from HVDs storing holograms in overlapping patterns, whereas a DVD basically stores bits of data facet-by-aspect. HVDs also use a thicker recording layer than DVDs -- an HVD shops data in almost your entire quantity of the disc, as a substitute of just a single, thin layer. The other major boost over conventional memory methods is HVD's transfer rate of up to 1 gigabyte (GB) per second -- that is 40 instances faster than DVD.
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An HVD stores and retrieves an entire page of knowledge, approximately 60,000 bits of data, in a single pulse of light, while a DVD shops and retrieves one bit of information in a single pulse of gentle. Now that we all know the premise at work in HVD know-how, let's take a look at the structure of the Optware disc. First off, most of these programs send the reference beam and the data beam into the recording medium on different axes. This requires extremely complex optical techniques to line them up at the precise point at which they need to intersect. One other disadvantage has to do with incompatibility with present storage media: Memory Wave Traditionally, holographic storage systems contained no servo data, because the beam carrying it could interfere with the holography process. Additionally, earlier holographic memory discs have been notably thicker than CDs and DVDs. Optware has implemented some modifications in its HVD that would make it a greater fit for the patron market. Within the HVD system, the laser beams travel in the same axis and strike the recording medium at the same angle, which Optware calls the collinear technique.
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