PRESENTED BY : R.CHAITHANYA IVTH YEAR ECE ROLL NO-118T1A0404 BLUE RAY DISC

CONTENTS  Introduction  Why it is named BLU-RAY ?.  Manufacturers  Details  Working  Software Supported  Application  Advantages and dis-advantages  Conclusion

WHAT IS BLUERAY  It is the name of a next-generation optical disc format jointly developed by the Blu -ray Disc Association (BDA).  The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data.

WHY IT NAMED AS BLUERAY The name Blu-ray is derived from the underlying technology, which utilizes a blue-violet laser to read and write data. The name is a combination of "Blue" (blue-violet laser) and "Ray" (optical ray).

MANUFACTURERS The Blu-ray Disc format was developed by the Blu-ray Disc Association (BDA), a group of leading consumer electronics, personal computer and media manufacturers, with more than 180 member companies from all over the world. The Board of Directors currently consists of: Apple Computer, Inc. Dell Inc. Hewlett Packard Company Hitachi, Ltd. LG Electronics Inc. Matsushita Electric Industrial Co., Ltd. Mitsubishi Electric Corporation Pioneer Corporation Royal Philips Electronics Samsung Electronics Co., Ltd. Sharp Corporation

TECHNICAL DETAILS A single-layer Blu-ray disc, can hold up to 27 GB of data -- that's more than two hours of high-definition video or about 13 hours of standard video. A double-layer Blu-ray disc can store up to 50 GB, enough to hold about 4.5 hours of high-definition video or more than 20 hours of standard video.

WORKING The Blu-ray disc overcomes DVD-reading issues by placing the data on top of a 1.1-mm-thick polycarbonate layer. Having the data on top prevents birefringence and therefore prevents readability problems. And, with the recording layer sitting closer to the objective lens of the reading mechanism, the problem of disc tilt is virtually eliminated. Because the data is closer to the surface, a hard coating is placed on the outside of the disc to protect it from scratches and fingerprints.

SOFTWARE SUPPORTED VIDEO CODECS: MPEG-2 - enhanced for HD, also used for playback of DVDs and HDTV recordings. MPEG-4 AVC - part of the MPEG-4 standard also known as H.264 (High Profile and Main Profile). AUDIO CODECS: DTS Digital Surround - format used for DVDs, offers 5.1- channel surround sound.

APPLICATIONS Many of the famous movie studios are releasing there their movies on BLU-RAY DVD. As it provides greater storage capacity, so more amount of data can be stored in more protective manner as compared to convectional DVD. Sony is releasing games DVDs in BLU-RAY format for their home video game consoles

ADVANTAGES It gives a high storage capacity. It can be used to store about 4.5 hours of high definition video It provides better data protection. It can be burned while reading it.

DISADVANTAGES Blu-Ray DVD are not compatible with CD-DVD ROMs available these days It is quiet expensive

CONCLUSION Today consumers are searching for faster transfer speeds and large storage capacity. These two are the most notable advantages of BD technology. So BD will be a good option for such peoples. According to the EMA (Entertainment Merchant Association) in U.S, by the end of 2012, sales of Blu-ray Discs will surpass those of standard definition storage medias, generating sales of a whopping $9.5 billion. Home video spending on the whole has been projected to grow exponentially to $25.6 billion in These shows the increasing demand for Blu-ray products.

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