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    dvd

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    of information to be written onto a compact disc, without the degradation of the information. The binary is stored on the writeable side of an optical disc as pits (a pit represents the number zero) and lands (a land represents the number one). CDs DVDs and Blu-ray are all optical discs in which they all store and retrieve data and therefore follow the same physics principles. The common principle for optical discs is the reflection of a laser (semiconductor diode laser) when interacting with the

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    dvd

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    disc is at war with itself, more specifically; DVD vs Blu-Ray. People often wonder; which is better? Truth is, they all work the same way, they just have different storage capacities and slight variations (e.g., DVD - RW, DVD+R, etc.) 2.0 Optical Disc Although there is quite a large difference between CD's, DVD's and Blu-Ray, those differences lie in the finer details, they are all actua... ... middle of paper ... ...the successor to the DVD format. Blu-Ray uses a 405nm laser, which allows

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    dvd

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    There are many different types of data storage disks, varying by their capacity, physical properties and how they are read. In this article, three specific types of disks will be explored; these are the CD, DVD, and BD Disks. To clear up any misconceptions, CD stands for compact disk, DVD means digital video disk or digital versatile disk, and BD stands for blu-ray disk. These disks are all 12 centimetres in diameter with a 15mm diameter circular hole in the centre used for positioning the disk in

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    The DVD Revolution

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    The DVD Revolution Specific Purpose: To inform my audience about the features and advantages of DVD video. Central Idea: The DVD video format has superior audio and visual quality to VHS, as well as more special features, which is why it should eventually occupy the place of the VCR in American households. Introduction I’d like to start things out by taking a survey. How many of you remember having a CD player in your house fifteen years ago? Not very many of you, I see. Of course, we all have

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    DVD Vs. VCR

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    differences between the average home Video Cassette Recorder (VCR) and the recently developed Digital Video Disc (DVD) system. These two home entertainment components have very clear differences. It is important for consumers to carefully consider each of these concerns before deciding on the home entertainment component that is right for them.When considering the purchase of a home VCR or DVD system, consumers should carefully examine the varying costs of the two components. If cost is a concern, consumers

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    The Decline of DVD Sales

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    DVD sales have declined causing a current problem for Sony Corporations subsidiary Sony Pictures Entertainment. Sony Pictures Entertainment Inc. has seen a severe decline in revenue in the past recent months. DVD sales have declined to a level of severe concern, and as such left financial analysts and specialists in the industry deeply worried. We have taken to the field and conducted a number of interviews to decipher the basis of the rationale behind lack of DVD sales. Through the course of the

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    it, the now ubiquitous DVD. The acronym “DVD” originally stood for Digital Video Disc, but as this versatile technology found more and more uses in non-video applications, it has come to be known by many as the Digital Versatile Disc. Officially, the members of the DVD Forum (maintained by Toshiba) never came to a decision on the matter, so the name of the format remains “DVD,” and the meaning of the “V” remains ambiguous. But despite the confusion over the acronym, the DVD has taken the world by

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    DVD or Blu-Ray ?

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    tapes to DVDs and many consumers found the change difficult to acclimate to. It seems as if as soon as we were familiar with DVDs a new home video technology was introduced. With the recent addition of Blu-ray disks to the mix, countless consumers are finding themselves confused and inexperienced with the different video technologies. Though DVDs and Blu-rays share several similarities, they also possess their own individual pros and cons. A Blu-ray disk is the exact same size as a DVD. When holding

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    The Physics of CDs and DVDs

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    The Physics of CDs and DVDs Everywhere you look now days, you see or interact with CDs or DVDs; whether it is in the car, at work, or at home for pleasure, you deal with these modern marvels. Whatever the use, CD has become a reliable medium in which to distribute information, in a reliable way. The cost of a CD is very inexpensive, making it a popular choice by companies trying to advertise, or teach you about something. American On Line (AOL) is one example of companies who have chose this reliable

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    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

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