Direct to disk recording 2754698 210420076 2008-05-05T21:22:08Z Binksternet 4967956 Digital audio recording. Moved [[spelling of disc]] to See Also {{about|digital storage systems|audio recording|Direct to disc recording}} '''Direct to disk recording''' refers to methods by which digital audio and video are recorded to portable storage media such as [[hard drive]]s and [[DVD]]s. Direct to disk can involve permanent or semi-permanent [[Non-volatile memory|non-volatile]] recording media. Computer [[hard disk drive]]s are erasable and rewritable non-volatile recording devices but have been referred to as "permanent" by some manufacturers of direct to disk systems. ==Audio recording== In 1982, [[New England Digital]] offered an optional package for their [[Synclavier]] which allowed recording of monophonic 16-bit 50 kHz audio direct to hard drive. This was the first digital direct to disk audio recorder available commercially. Stereo audio was not immediately available due to data input and output limitations on hard drives of that time. Today, a majority of digital audio recording is preserved on hard disk drives. ==Video recording== *Types: **Consumer: From [[Camcorder]]s to [[Digital video recorder#Hard disk-based DVRs|TV top]] models like [[TiVo]] to PC [[computer]] based recorders. **High end consumer - Pro: [[NLE|Offline editing]] systems like [[Avid Technology|Avid]], to high-end [[Camcorder]]s **Professional portable: For recording TV shows/Movies in the field with [[Professional video camera]]s in [[Digital cinematography]]. **Professional Studio: From small systems able to record 2hours to Large multi port systems with a 100 hours of rec/play time ===Consumer=== *[[Miniaturization]] of recording and storage technology for consumer video already allows the non-professional user to directly record [[home video]]s to a permanent storage medium such as a [[DVD]]<ref>{{cite web | title = JVC Everio series hard disc handi-cams | publisher = JVC | url= http://www.jvc.co.uk/site/g_series/ | accessdate = 2006-11-22 }}</ref>. * DDRs are slowly replacing Consumer: [[DV]],[[Digital8]], [[8mm Video Format|Video8]], [[8mm Video Format|Hi8 ]], [[VHS]] and [[MicroMV]] video tape recorders. *Also see [[Digital video recorder]] ===Professional portable=== *Professional recording equipment using DtD transfers is beginning to appear. In April 2006, [[Seagate Technology|Seagate]] announced the first professional Direct-To-Disc cinematic camera aimed at the independent film-maker (using their disc drives)<ref>{{cite press release | title = Seagate Hard Drives Enable World's First Digital Cinema Camera With Direct-To-Disc. Recording | date = March, 2005 | publisher = Seagate | url=http://www.seagate.com/cda/newsinfo/newsroom/releases/article/0,1121,3148,00.html | accessdate = 2006-11-22 }}</ref>. *Infinity Series by [[Grass Valley (company)|Grass Valley]] ** Infinity Digital Media Camcorder - Infinity Digital Media Recorder ** REV PRO Digital Media Drive-REV PRO Removable Media ===Professional studio=== *Professional Studio DDRs are used to replace [[VTR]]s and VTR Cart machines, that play out [[commercials]] and [[TV shows]]. *''The Media Pool'' (1994)- Disk Recorder by [[Broadcast Television Systems Inc.|BTS]] was the first<ref>{{cite web |url=http://findarticles.com/p/articles/mi_hb5053/is_199407/ai_n18370236 |title=Media Pool tests the tapeless waters. (BTS digital disk-based recorder) | Broadcasting & Cable | Find Articles at BNET.com |accessdate=2008-01-27}}</ref> Professional Studio DDR. Received the ''Outstanding Achievement in Technical/Engineering Development Awards from National Academey Of Television Arts And Sciences'' in 2000&ndash;2001 for'' Pioneering developments in shared video-data storage systems for use in television video servers -'' [[TeleMation Inc.#Trivia|Philips]]/[[Grass Valley (company)|Thomson]]. *''Profile'' from [[Tektronix]] Models: ''PDR200-(1996), PDR300, PDR400'' *[[Grass Valley (company)#Broadcast Products|Grass Valley]]: **''Profile'' ''PVS3000, PVS3500'' and other models of DDRs **K2 Media Servers and Media Clients **Profile XP Video Servers **Profile XP Open SAN System ** M-Series intelligent video digital recorder (iVDR) ** Turbo intelligent digital disk recorders (iDDRs) * Rave/SpectSoft **''RaveHD'' **''Rave2K'' * DVS: **[[Digitale Videosysteme|DVS]] ''Clipster'' DDR **DVS ''2K Pronto'' DDR * CarbonHD digital disk recorder *The Digital video is stored on a [[Storage area network|Storage area network-SAN]] [[Hard Disk]] storage array. **Each year [[Hard Disk]]s get lager and able to hold hours of movies on [[Tera Byte]] systems. ** Also see: [[virtual telecine]] ===Advantages of DDR over tape=== * Quicker into the [[Non-linear editing system|edit]]: no need to digitise * The hard disks can store more than most tapes * Tapes and [[VTR]]s are expensive for the higher video data rates ===Disadvantages of DDR over tape=== * Hard disks are more expensive than tapes * Hard disks fail more frequently than tapes * Not practical to store a bank of hard drives for long term video storage. ==See also== *[[Spelling of disc]] *[[Hard disk recorder]] ==References== {{reflist}} [[Category:Recording]]