CHAPTER 6Optical Disc Media
Optical disc storage technology was pioneered in the 1960s by inventors who devised numerous ways to store analog and digital signals on reflective discs. Today, optical discs are widely used for computer, audio, and video applications. They provide high storage capacity; for example, with the development of blue lasers, a multilayer Blu-ray disc can hold 50 Gbytes or more. Optical media are ideal for mass distribution of data; the manufacturing cost of optical media is a fraction of the cost per byte of magnetic-disk or solid-state media. The life expectancy of optical discs is much longer than that of magnetic media. With proper storage, a Compact Disc should last for 100 years or more. Optical storage of digital ...
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