The fugitive part 10 Lets also

The fugitive part 10

Lets also allow for some horizontal smearing of the scan lines and only read 60 samples per line instead of the full 2 With these somewhat conservative estimates, we get: 320 lines x 60 samples per line x 4 bits per sample x 30 frames per second 2304000 bits per second 3Mb/sec 288 kbytes per second. That makes 17 megabytes per minute, storing 7 GB on a 160 minute VHS tape. In case anyone really cares, here is what I found: The universe is a very consistent entity. One of the major rules is that you cant get something for nothing. One such example is that you cant magically get tremendous resilience to noise digital without the cost of a huge amount of analog message data. VHS is an analog format, and hence it is difficult to make a good estimate on the amount of bits and bytes it can successfully hold without knowing a lot more about the format itself. Beyond that, in order to calculate the theoretical digital-data-equivalence of an analog format, you need to know the bandwidth limits of the analog VHS signal, and whether or not it uses an SSB filter analog TV broadcast does. IIRC, VHS tapes are too slow for use as digital playback devices. At one point, there were people using VHS tapes to store digital data, but the drive motor had to be made much faster in order to make it at all useful. The VHS media and read head have a relatively poor slew rate, so the bits have to be stretched way beyond the length that would provide 7GB of data. layoutarticlePrint articleIDCA6346827 By Glen Dickson Broadcasting Cable, 6/26/2006 Twentieth Century Fox executives are showing off HD movies that Fox will be releasing this year on the new Blu-Ray optical-disc format. Blu-Ray, which will deliver video in 1080-line progressive-scan high-definition and provide up to five times the storage of regular DVDs, is in competition with the HD-DVD format. Sony, Dell, a host of consumer-electronics manufacturers, and all the major movie studios except Universal support Blu-Ray. The technologys expansion has been hurt, however, by several delays in the introduction of players from Sony, Samsung and Pioneer. Samsungs first Blu-Ray player, which will sell for around 1, 000, is now hitting stores. Sony Pictures has released its first seven titles. Among them are the Arnold Schwarzenegger classic The Terminator and Vin Diesel-vehicle XXX. Meanwhile, the competing HD-DVD format is already on the market, backed by technology companies including Microsoft and Toshiba, as well as by the Universal, Warner Bros. and Paramount studios. Toshiba players priced at 500-800 hit stores in April, although, with limited distribution, units are hard to find. HD-DVD content continues to trickle out from the studios. Warner Bros. announced June releases of HD-DVD titles, such as Syriana, Kiss Kiss Bang Bang and Lethal Weapon. But until the Blu-Ray battle with HD-DVD is resolved, many consumers are likely to be sitting on the sidelines. To show off Blu-Ray earlier this month, Fox created a living-room environment at a Manhattan hotel, complete with a 65-inch Panasonic plasma 1080p display, to demonstrate several movies using prototype technology. Relying on a combination of a Pioneer Blu-Ray player and InterVideo WinDVD software, which provided the graphical user interface, Fox showed high-def clips from such movies as Independence Day and Master Commander in stunning detail and clarity. The demos only hinted at the full power of the 1-channel DTS-HD audio that is part of the Blu-Ray format, however, because DTS-HDcompatible consumer audio equipment is not yet available. Another demonstration, which used a prototype Panasonic Blu-Ray player to show a clip from The League of Extraordinary Gentlemen, had no sound at all the player is still under development, Fox explained. Instead, this demo focused on the interactive features made possible by Blu-Rays use of the Java programming language. Among them: the ability for viewers to get a pop-up menu while watching the movie, launch graphic windows that give more information on individual actors, and save bookmarks of favorite scenes and store them on the flash memory of the Blu-Ray player itself. The next time the movie is cued up, the bookmarks immediately appear. The idea is to make it as consumer-friendly as possible, explains Jacqueline Reed, executive director of DVD development for Twentieth Century Fox Home Entertainment. Blu-Ray players will also have the ability to connect to the Internet. A Java-based feature called BD Live will provide instant interactivity while a Blu-Ray disc is played, allowing a viewer to launch a streaming discussion with a movies director, says Clayton Biele, IT operations manager for Fox Domestic Home Entertainment. Through BD Live, the content on Blu-Ray discs also can be securely updated, says Biele, letting users download supplemental language tracks as they become available. Fox is planning to launch roughly 20 HD titles on Blu-Ray in the fourth quarter, including such blockbuster titles as Ice Age 2, X-Men: The Last Stand, Omen 666 and Garfield 2, along with catalog fare. Individual titles will probably have a list price of under 40 but sell for under 30 in stores, says Steve Feldstein, senior VP of corporate and marketing communications, Fox Filmed Entertainment. A Blu-Ray release this year of a Fox television property, such as 24, is also a possibility, Feldstein says, but he cautions that no firm plans are in place.