Recently the deci­sion was offi­cially made that the blu-ray DVDs would replace the stan­dard DVDs that so many indi­vid­u­als are used to. The Blu-ray DVDs are essen­tially bet­ter pro­tected and durable as more of the DVDs are being sold. Many large com­pa­nies that essen­tially use the Blu-ray DVDs have cho­sen to use this style for a vari­ety of rea­sons. There was a lot of dis­pute between the blu-ray DVD and the stan­dard DVDs and it became ‘for­mat war’ in many ways.

How­ever, obvi­ously the Blu-ray DVDs won. Cer­tain fea­tures are avail­able with the blu-ray DVDs that the stan­dard DVDs just don’t have.

In many of the sales stud­ies that were estab­lished the blu-ray DVDs are sell­ing more and have been on the mar­ket for some time now. As more larger cor­po­ra­tions and com­pa­nies have cho­sen to use these DVDs the sales will increase even more. With the idea and con­cept that the stan­dard DVDs are going to be a thing of the past to a cer­tain degree, it is appar­ent the Blu-ray DVDs are the best in the tech­nol­ogy of media, data, and other forms of uses of the product.

Another fac­tor that was taken into con­sid­er­a­tion was that blu-ray DVDs are com­pletely dif­fer­ent in the con­cept that because they are designed bet­ter and last longer, they do not need to be replaced because of being bro­ken, dam­aged or scratched as some of the other stan­dard DVDs. Truly, blu-ray DVDs are the future. The blu-ray DVDs also have some stan­dards in con­text, as there are con­sid­ered three dif­fer­ent ‘pro­files’ as a part of the usage of the DVDs and how they per­form once they have any type of media, data, or any­thing asso­ci­ated with this. The poly­mer coat­ing adds the excep­tional pro­tec­tion for the Blu-ray DVDs and there­fore they are essen­tially not eas­ily scratched.

The over­all con­cept of the blu-ray DVD is that they are designed and cre­ated by using a blue laser which allows for bet­ter accu­racy in the devel­op­ment of the DVD as a product.

Also, by using the blue laser it is thin­ner, there­fore more space is ulti­mately avail­able to be used as well.

Just like the orig­i­nal stan­dard DVDs these new and improved Blu-ray DVDs can be used for record­ing, back­ing up data, media, music, movies, and sev­eral other uses.

Forums and blog post­ings have increased a great deal that per­tain to the Blu-ray DVDs due in part that these DVDs do in fact offer so much more to an indi­vid­ual. There are sev­eral dif­fer­ent web sites via the Inter­net that are asso­ci­ated with the Blu-ray DVDs and indi­vid­u­als who are inter­ested in these ideas and issues that are addressed as well as other infor­ma­tion, there are many to choose from.

Although some experts dis­agree with cer­tain changes in the tech­nol­ogy indus­try, when sur­veys were done essen­tially via the Inter­net indi­vid­u­als who have pur­chased the Blu-ray DVDs left mostly pos­i­tive feed­back about the new prod­ucts. On the five star rat­ing scale the prod­uct was often rated with five stars.

Intro­duc­tion

HDTV tech­nol­ogy was first intro­duced in the US dur­ing the 1990s by a group of elec­tron­ics com­pa­nies called the Dig­i­tal HDTV Grand Alliance. HDTV is capa­ble of “theater-quality” audio because it uses the Dolby Dig­i­tal (AC-3) for­mat to sup­port “5. HDTV offers a degree of clar­ity that is much closer to this. HDTV can be recorded to D-VHS (Data-VHS), W-VHS (ana­log only), to a HDTV-capable dig­i­tal video recorder (for exam­ple DirecTV’s high-definition Dig­i­tal video recorder, Sky HD’s set-top box, or TiVo’s Series 3 or HD recorders), or an HDTV-ready HTPC. HDTV is just one part of the DTV tran­si­tion. HDTV is best viewed on a new high-definition tele­vi­sion. HDTV requires an HDTV tuner to view and the most detailed HDTV for­mat is 1080i.

Definition

The term “high-definition” can refer to the res­o­lu­tion spec­i­fi­ca­tions them­selves, or more loosely to media capa­ble of sim­i­lar sharp­ness, such as pho­to­graphic film and dig­i­tal video. High-definition tele­vi­sion (HDTV) poten­tially offers a much bet­ter pic­ture qual­ity than stan­dard tele­vi­sion. NTSC sys­tem, estab­lished in 1941, were high def­i­n­i­tion only in com­par­i­son with pre­vi­ous mechan­i­cal and elec­tronic tele­vi­sion sys­tems, and NTSC, along with the later Euro­pean 625-line PAL and SECAMs, is described as stan­dard def­i­n­i­tion today.

Television

While some early ana­log HDTV for­mats were broad­cast in Europe and Japan, HDTV is usu­ally broad­cast dig­i­tally, because dig­i­tal tele­vi­sion (DTV) broad­cast­ing requires much less band­width if it uses enough video com­pres­sion. To get a bet­ter pic­ture HDTV tele­vi­sions require a High Def­i­n­i­tion (HD) sig­nal. As of 2007, broad­cast­ers may demand, or cable-television oper­a­tors may elect, to place HD sig­nals in a pre­mium band that requires higher cable fees. HDTV has at least twice the lin­ear res­o­lu­tion of standard-definition tele­vi­sion (SDTV), thus allow­ing much more detail to be shown com­pared with ana­log tele­vi­sion or reg­u­lar DVD.

Resolution

It should be noted that while HDTV is more like a the­ater in qual­ity than con­ven­tional tele­vi­sion, 35 mm and 70 mm film pro­jec­tors used in the­aters still have the high­est res­o­lu­tion and best view­ing qual­ity on very large screens. Dig­i­tal NTSC– and PAL/SECAM-like sig­nals (480i60 and 576i50 respec­tively) are trans­mit­ted at a hor­i­zon­tal res­o­lu­tion of 720 or 704 “pix­els”. In Aus­tralia, the 576p50 for­mat is also con­sid­ered a HDTV for­mat, as it has dou­bled tem­po­ral res­o­lu­tion though the use of pro­gres­sive scan­ning. For exam­ple, you can get a 72″ pro­jec­tion HDTV that has 1920×1080 res­o­lu­tion from $2500 to $5000 depend­ing on the brand and model.

Satellite

Satel­lite ser­vices and a Cable TV providers are pro­vid­ing an increas­ing num­ber of HDTV feeds. Satellite-based TV com­pa­nies, such as Opti­mum, DirecTV, Sky Dig­i­tal (In the UK and Ire­land) and Dish­Net­work, offer HDTV to cus­tomers as an upgrade. To receive an HDTV broad­cast you need either a TV with a built-in HDTV tuner, like this Pana­sonic plasma HDTV, an HDTV receiver which can pick-up off the air HDTV chan­nels, cable HDTV, or satel­lite HDTV receiver like Dish Net­work HDTV and this DirecTV H10 receiver.

Technology

While high def­i­n­i­tion has become a real­ity for many con­sumers, the tech­ni­cal jar­gon asso­ci­ated with this exit­ing new tech­nol­ogy is caus­ing much con­fu­sion. Through the evo­lu­tion of dis­play tech­nol­ogy, a new tele­vi­sion has emerged; so totally dif­fer­ent, a new TV ‘paragon’ has been cre­ated. it doesn’t require a degree in TV Technology.

In addi­tion, lack of enthu­si­as­tic co-operation between broad­cast­ers, cable/satellite providers, and man­u­fac­tur­ers has injected fur­ther con­fu­sion for retail­ers on how to sell HDTV and con­sumers as what prod­ucts to buy, how to use them, and to what pro­grams are actu­ally avail­able in HDTV. On the other hand, a very high res­o­lu­tion source may require more band­width than is avail­able in order to be trans­mit­ted with­out loss of fidelity.

To watch high def­i­n­i­tion tele­vi­sion or HDTV you will need three things: A Satel­lite or Cable pro­gram sub­scrip­tion to HD Pro­gram­ming; An HDTV Satel­lite Receiver or Dig­i­tal Set Top Box; A high def­i­n­i­tion tele­vi­sion set (HDTV). But beyond all argu­ment, HDTV offers the ulti­mate in TV Pic­ture Qual­ity. We believe you’re inter­ested in what you need to know, to buy and enjoy a Digital-HDTV – NOT, how to build one.

The high def­i­n­i­tion DVD disk is capa­ble of stor­ing 30GB of infor­ma­tion even after using its both sides and on the other hand the stor­age abil­ity of blu-ray disk reaches 50GB (25GB per side). The cur­rent CD and the DVD tape for­mat use the red lazer for read­ing and record­ing the infor­ma­tion onto the disk. Wave­length of DVD is 650nm and that of the CD disk for­mat is 780nm. Wave­length has been reduced fur­ther in the new disk tech­nol­ogy of blu-ray which was intro­duced by Philips and Sony. Wave­length of blu-ray is 405 nanome­ters. The rea­son to use blue laser in the blu-ray for­mat is its shorter wavelength.

Blu-ray tech­nol­ogy is able to record large vol­umes of HD sound and videos as well. Color of the lazer used in blu-ray tech­nol­ogy is some­what blu-violet with wave­length shorter that red lazer. The most pow­er­ful advan­tage of the blu-ray disc for­mat in com­par­i­son to the nor­mal red lazer is its capa­bil­ity of record­ing more data vol­ume keep­ing the disk sizes same as the CD and DVD disk size. The pic­ture qual­ity is also clearer with vivid­ness and sharper col­ors as well. Spot size required by the blue-lazer is also smaller. Pickup aper­ture of blue lazer is 0.85 nanome­ters. Den­sity of the blu-ray disk is very high that helps to fit 25GB data on each side of blu­ray disc mak­ing total stor­age of 50 GB.

Blu-ray tech­nol­ogy is the opti­cal stor­age format’s new future. The advan­tages and ben­e­fits pro­vided by the blu-ray disk tech­nol­ogy are far beyond that of the DVD for­mat. Blu-ray tech­nol­ogy sup­ports large record­ing capac­ity (25GB) on same phys­i­cal size disk as of the DVD disk. So it makes it 50GB when data is stored on both blu-ray disks’ sides (as 25GB for each layer). HD video is sup­ported by the blu-ray tech­nol­ogy with the help of mod­ern encoders. Video (1920 x 1080p) is sup­ported with VC-1, ACV and MPEG2 cod­ing schemes. Higher video qual­ity is enabled by the VC1 and ACV with lower bit-rate in com­par­i­son to the com­mon MPEG2 encoder.

The lat­est audio encoders are sup­ported by the blu-ray disk tech­nol­ogy that includes the DTS, Dolby True-HD, DTS-HD and Dolby Dig­i­tal (multi chan­nel). These audio encoders on the blu-ray disk can be uti­lized for up to eight audio chan­nels (7.1). Enhanced inter­ac­tiv­ity (Java based) along with inter­net con­nec­tiv­ity and com­mon menus (DVD like) are also sup­ported by the blu-ray disc tech­nol­ogy. An open plat­form is pro­vided by the blu-ray for­mat for the Java writ­ten con­nected and inter­ac­tive appli­ca­tions. It is very much clear that at the end of the high def­i­n­i­tion DVD and blu-ray disk for­mat war, the opti­cal disk format’s future is the blu-ray tech­nol­ogy. Games can also be played using the blu-ray disk play­ers and are also capa­ble of sup­port­ing the online sim­ple games because of their enough horsepower.

Blu-ray disk for­mat along with more capac­ity pro­vides new inter­ac­tiv­ity level as well. Blu-ray tech­nol­ogy pro­vides easy con­nec­tiv­ity to the inter­net and helps the users in instant down­load­ing of sub­ti­tles and other com­mon fea­tures of movies as well. With blu-ray tech­nol­ogy the con­sumers can record HD-TV with­out any dete­ri­o­ra­tion in the qual­ity and can skip right away to any spot on the blu-ray disk. One pro­gram can be recorded while another pro­gram is being watched on the disk.

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