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2. Optical disc packaging - Wikipedia

   en.wikipedia.org/wiki/Optical_disc_packaging

   Beginning in 2007, prerecorded Blu-ray and HD DVD titles ship in packages similar to but slightly smaller (18.5 mm shorter and 1 mm thinner: 135 mm × 171.5 mm × 13 mm) [31] than a standard DVD keep case, generally with the format logo prominently displayed in a horizontal stripe across the top of the case (red for HD DVD; and PlayStation 3 ...

3. Optical storage - Wikipedia

   en.wikipedia.org/wiki/Optical_storage

   3D optical data storage, which has multiple layers of media and thus stores multiples of Blu-ray capacity; 5D optical data storage which is primarily aimed at long-term data storage on the order of thousands of years; Near-field optics; Solid immersion optics (allowing an extremely high numerical aperture).

4. Keep case - Wikipedia

   en.wikipedia.org/wiki/Keep_case

   Standard black keep case. A keep case or poly-box is a type of packaging, most commonly used with DVDs and Blu-ray videos (and sometimes CDs).. Besides DVD-Video films, keep cases are very common with most disc-based video games since the PlayStation 2, and they are also found on many PC titles and MP3-CD audiobooks (all use discs that are the same basic dimensions as a DVD).

5. Shelf (storage) - Wikipedia

   en.wikipedia.org/wiki/Shelf_(storage)

   A shelf can be attached to a wall or other vertical surface, be suspended from a ceiling, be a part of a free-standing frame unit, or it can be part of a piece of furniture such as a cabinet, bookcase, entertainment center, headboard, and so on. Usually, two to six shelves make up a unit, each shelf being attached perpendicularly to the ...

6. Caddy (hardware) - Wikipedia

   en.wikipedia.org/wiki/Caddy_(hardware)

   The PlayStation Portable, UMD disc is a similar concept, using a small proprietary DVD-type disc, in a fixed unopenable caddy as both a copy protection and damage prevention measure. The MiniDisc is a similar concept again, using a small proprietary Magneto-optical type disc instead, also in a fixed unopenable caddy.

7. Optical disc - Wikipedia

   en.wikipedia.org/wiki/Optical_disc

   Blu-ray Disc and HD DVD uses blue-violet lasers and focusing optics of greater aperture, for use with discs with smaller pits and lands, thereby greater data storage capacity per layer. [22] In practice, the effective multimedia presentation capacity is improved with enhanced video data compression codecs such as H.264/MPEG-4 AVC and VC-1.