Andrew Li
Object From the Future
Blu-Ray Disc
Blu-ray, also known as Blu-ray Disc (BD), is the name of a next-generation optical disc format jointly developed by the Blu-ray Disc Association (BDA), a group of the world's leading consumer electronics, personal computer and media manufacturers (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson). The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data. The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. This extra capacity combined with the use of advanced video and audio codecs will offer consumers an unprecedented HD experience.
The key technologies of Blu-ray is the blue-violet laser that is used to write the data to the disc. This blue laser has a much shorter wavelength than the current red laser DVD system, which makes it possible to read and write smaller pits, as a result, these discs can hold up to 25 GB of data on a single sided single layer 12cm disc.
Strongest competitor
The HD-DVD (High Definition DVD) is currently the stongest competitor of Blu-ray Disk. It have low production cost as advantage.
which format will become the next standard for movie and data storage?
BD will be the next generation for movie and data storage :
- more in capacity
- many and powerful backers
- Longer lifespan in use.
- more innovative
Research Questions
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What is blogs ? And why using blogs?
- A blog (short for "Web log") is a cross between a personal diary and a list of links to articles on the Web. Internet users can create them, and anyone surfing the Web can read them.
- Everyone can express his meaning/thought or sharing information on a easy way.
- In Web 1.0, a small number of writers created Web pages for a large number of readers. Over time, however, more and more people started writing content in addition to reading it.
- New search engines, an online marketplace, solutions for spam, communication.
- People have stuff they want to share (or axes to grind or stuff they want to say), so giving them a place to express themselves and a community of users to share it with will result in a system that grows exponentially through the network effect to become more than the sum of its parts
- According to some expert bottom-up internet infrastructure is the key to achieve a knowledge-based society. It can change peoples lifestyle, knowledge, view, politics … etc.
- The study estimates that 4.8 million persons have at some time during 2005 downloaded a podcast from either a radio station or other source. While in 2004 only 820,000 podcast users.
- More interestingly, on average less than 20% listen to their podcast downloads on an MP3 player or other digital device.
- By 2010 podcast audience growth is expected to reach a conservative 45 million users who will have ever listened to a podcast. Aggressive estimates place this number closer to 75 million by this date.