The Digital Fact Book - Quantel

HIPPIHigh performance parallel interface (ANSI X3.283-1996). Capable of transfers up to 200 MB/s(800 with the 6400 Mb/s HIPPI, a.k.a. GSN) it is targeted at high performance computingand optimized for applications involving streaming large volumes of data rather than burstynetwork activity. The parallel connection is limited to short distance and so Serial HIPPIis now available (a.k.a. GSN).See also: GSNWebsite: www.hnf.orgHHistory (editing)A Quantel term describing the ability to instantly recall original material in uncommittedform along with the associated editing data. This allows any late changes to be madequickly and easily. For example, a shadow could be softened or moved in a multi-layeredcommercial without having to manually find the original material or recalling the set-updata. Archiving a program containing History means that the operator no longer needs toremember to save packs or set-ups associated with the job as all the material and set-upswill be automatically included within the history archive.Holographic recordingA number of holographic recording systems are emerging as new ways of storing even moredata onto 12 cm optical disks. ‘Holographic’ implies using optical techniques to record intothe depth of the media, similar to modern high capacity hard (magnetic) disk drives thatrecord successive tracks under one another below the disk’s surface. Sony has announcedwork on data reading/writing using holographic Micro-Reflector recording technology:a holographic system relying on interference patterns between a read/record and a referencebeam. It can store 1.25 GB in a single layer on the disk, but there can be 10 to 20 layers.InPhase Technologies offers holographic recording through the depth of the disk allowinga 1.2 Mb ‘page’ of data to be written or read in one flash of light. First-generation holographicmedia has a capacity of 300 GB and a transferrate of 20 MB/s (160 Mb/s),second generationwill have a capacity of 800 GB and the third 1.6 TB.Such specifications offer huge potential for many storage and replay applications includingprofessional HD recording, archiving and, who knows, a replacement HD DVD/BD?See also: HVDWebsite: www.inphase-technologies.com102