BD and DVD both have pits and bumps. The difference between the two is that the BD pits and bumps are smaller and packed closer together. A blue laser is used to read the BD. The BD has spiral tracks running from the center of the disc out to the edges. The information is stored in these tracks in the form of audio and video. The blue laser used to read this information has a wavelength of approximately 405 nanometers and must be much more accurate than that of a DVD as the pits and bumps are smaller and closer together.
Figure 2: Different lasers reading a DVD and BD.
Figure 2 present an image of a DVD and a BD. As can be seen on the DVD, the pits and bumps are larger and so the laser is less accurate than that of the BD. Blu-Ray disc can run formats that are encoded in MPEG-4 and MPEG-2. BD is also used for data storage, playing 1080p HD video and audio, 3-D Stereophonic and it has many other uses.
The DVD player is not only used for playing the data present in a DVD, but also to write the content onto a DVD. As told earlier, a DVD has pits and bumps like a BD in its tracks which hold information. This information can be a video, audio or mixture of both. When a DVD player reads this data, the smooth surface of the disk is taken as “0” and the pits are read as “1”. It reads the DVD and converts the data to binary code. Unlike a BD, a DVD uses a red laser with a wavelength of roughly 600 nanometers. This is 180 nanometers less than a CD however 200 more than a BD. This enables it to have a higher density of pits and bumps than a CD but less than a BD. Originally only single layer DVDs were released but then double layer discs were later released. Single layer discs can hold up to 4.7 GB of data and double layered discs can hold up to 17 GB of data. A DVD does not have the capacity to hold hi-def movies. So a MPEG-2 compression system is introduced. As this is used, the data will be encoded onto the DVD as elements of the changing frames. This has to be successfully decoded and decompressed by the DVD player.
Character development is an essential component to a successful film. This thorough and elaborate character development is a reason why diverse audiences are able to watch these films more than once. Joel and Ethan Coen, and Quentin Tarantino are all writers and directors that execute the theme of character driven films almost to perfection. The films O Brother, Where Art Thou, written and directed by the Coen Brothers, and Pulp Fiction, written and directed by Quentin Tarantino, exemplify this.
12. DVDs are digital versatile disc, optical discs used to externally store data. DVDs have higher recording and retrieving speeds, are better suited for backing up information, and have higher capacity per device than
The rate at which technology advances, even by today’s standards, continues to amaze and astonish people. Even the simplest of daily tasks are influenced and molded by the increasingly original inventions that continue to explode into the public’s eye. One’s everyday life is constantly updated, reinvented, and (if you will) reprogrammed in order to adapt to the new ways of technology. Yet this phenomenon is not unique to this decade alone. As modern and as fast-paced as things may seem now, people in 1984 were going through very similar circumstances. The invention of the VCR was quickly becoming an obviously important product, while advertisers, media executives, and the average consumer were all trying to determine how to interpret this invention.
sound quality is preserved, but the file size is significantly smaller than it would be as a regular CD
Globally there’s a 2 to 3 percent proportion of the infant population being born with congenital malformations. Congenital malformations, existing at birth are single or multiple defects in the body or organs identifiable at birth or during fetal development. Congenital heart defects (CHD) are the most frequent of congenital malformations. It is estimated that “eight in 1,000 newborns” are said to have congenital heart defects, an abnormal aliment of the heart and blood vessels surrounding the heart. A ventricular septal defect (VSD) accounts for 25-30 percent of all congenital heart defects, with 1 in 500 infants born with a VSD.
How a record player works is quite simple. A motor is somehow connected to a solid disc so that the disc is rotated at a constant speed. On top of the rotating disc (platter), The record is placed on top, with a slip mat in between. The slip mat can serve two functions. In the past to hold the record in place so that it would not rotate independently of the platter. Now, however, the slip mat serves a much different function. Instead of holding the record in place, the slip mat is now used to reduce the friction between the spinning platter and the record. This way a DJ can scratch (manually move the record, usually at high speeds) the record while the platter continues to spin underneath. Once the record is rotating, a stylus glides along the grooves and picks up the vibrations, these are then converted into audible sound.
United States. This is a documentary about several children who live in poverty and dream of going to America in order to be reunited with their biological parents, or simply to seek out a better life for themselves. The way that the children are getting to America is by riding a train known as “La Bestia” (The Beast) throughout Mexico and ultimately arriving at the border with the United States. The children risk losing their lives every day, either by falling off the train as they sleep or getting kidnapped or raped by predators who are also trying to get to America. As you watch the film you are able to see every stop that is made through Mexico until finally
As advance technology of fiber-optic developed and is on the rise, everyday there is another story about entertaining movies on demand and streaming online is with ease. Those developments which let movie’s viewers sit in the comfort of their home or anywhere with access to the internet can stream instance movies with a push of a bottom. They no longer need to make a trip to the movie’s stores for movies rental and return, so that is why movie shops fail and filed for bankruptcy bring a symbolic close to the “let’s go rent a movie” era. Blockbuster LLC, formerly Blockbuster Entertainment Inc., both owned and franchised American-based giant provider of home movie and video game rental services through video rental stores, later adding movies by mail, streaming online and video on demand. Due to the peak of fiber-optic and competition from companies such as Netflix, Redbox, and GameFly, Blockbuster became the victim of digital media and filed for bankruptcy on September 23, 2010 due to significant lost in revenue.[3]
A Worldwide Problem Software piracy is defined as the illegal copying of software for commercial or personal gain. Software companies have tried many methods to prevent piracy, with varying degrees of success. Several agencies like the Software Publishers Association and the Business Software Alliance have been formed to combat both worldwide and domestic piracy. Software piracy is an unresolved, worldwide problem, costing millions of dollars in lost revenue. Software companies have used many different copy protection schemes. The most annoying form of copy protection is the use of a key disk. This type of copy protection requires the user to insert the original disk every time the program is run. It can be quite difficult to keep up with disks that are years old. The most common technique of copy protection requires the user to look up a word or phrase in the program's manual. This method is less annoying than other forms of copy protection, but it can be a nuisance having to locate the manual every time. Software pirates usually have no trouble "cracking" the program, which permanently removes the copy protection. After the invention of CD-ROM, which until lately was uncopyable, most software companies stopped placing copy protection in their programs. Instead, the companies are trying new methods of disc impression. 3M recently developed a new technology of disc impression which allows companies to imprint an image on the read side of a CD-ROM. This technology would not prevent pirates from copying the CD, but it would make a "bootleg" copy differ from the original and make the copy traceable by law enforcement officials (Estes 89). Sometimes, when a person uses a pirated program, there is a "virus" attached to the program. Viruses are self-replicating programs that, when activated, can damage a computer. These viruses are most commonly found on pirated computer games, placed there by some malignant computer programmer. In his January 1993 article, Chris O' Malley points out that if piracy was wiped out viruses would eventually disappear (O' Malley 60). There are ways that a thrifty consumer can save money on software without resorting to piracy. Computer companies often offer discounts on new software if a person has previously purchased an earlier version of the software. Competition between companies also drives prices low and keeps the number of pirated copies down (Morgan 45). People eventually tire or outgrow their software and decide to sell it.
and next to the disc is an infrared LED and an infrared sensor. As the
...s. This tool, the dcfldd command, works similarly to the dd command but has many features designed for computer forensics acquisitions. The following are important functions dcfldd offers that aren’t possible with dd:
At home, you can control the variety and ways to watch a movie. People buy many movies to watch at home and it can be anything at any time, even at any place. The only bad thing about it is that they cannot see any of the newest released movies that recently came out in theaters. There are two types of ways people watch movies in their homes. One way is people who already own DVDs or have bought many of them and start watching them in their DVD players.
The purpose of this research assignment is to put forward a convincing argument in how digital technology in the last four years have completely revolutionised the whole film industry. This thesis will attempt to focus on the main disciplines of film making and the impact that technology has had on each area. Firstly, this article will look at recent changes in the pre-production area of film making followed by what new equipment and storage facilities are being used during film production. Next is arguable the biggest transformation in the film industry as a result of technology, namely the post production stage. New methods of film distribution are explored followed by the negative impact that technology has had on the film industry with the main focus being on the illegal distribution of copyrighted film footage. New ways in post-theatre film distribution is also explored and the impact that continual break-through technologies are having on the education and training of professionals working within the film industry. Finally an examination of the impact of computer generated graphics on the film industry is concluded by a brief discussion on what the future may hold for the film industry.
When debating Netflix and movie theaters the factors to consider are convenience, variety, price, and the experience. These are the four most important factors, because people want the best quality that is the most cost effective. Through my research, I show that movie theaters have an unsurpassed experience associated with them, but Netflix is convenient, affordable, and has a wide array of programs.
one will begin to see more and more documents being on CD-ROM and also on the