Eight-to-Fourteen Modulation, or EFM as it is abbreviated, is an encoding technique used by CDs and provides a way of countering errors by encoding a byte into 2 bytes. Using EFM the data is broken into 8-bit blocks (bytes). Each 8-bit block is translated into a corresponding 14-bit codeword using a predefined lookup table. The 14-bit codeword are chosen so that binary ones are always separated by a minimum of two and a maximum of ten binary zeroes. EFM maximizes the number of transitions possible with an arbitrary pit and land length which is determined by the wavelength of the laser light used to read the data. Eight-to-Fourteen Modulation uses an RLL encoding scheme.
- El Torito
A bootable CD-ROM format specification that allows a computer to boot from a CD-ROM. El Torito was proposed by IBM and Phoenix Technologies. It is an extension to the ISO 9660 CD-ROM specification.
- Electronic Frontier Foundation
A non-profit organization dedicated to protecting civil liberties in the modern communications age. Its emphasis is on ensuring that the general public has equal access to new communications channels such as the Internet. It sponsors court cases and acts as an information clearinghouse. It has taken the lead in fighting efforts, such as the Clipper […]
- Electronic Funds Transfer
Often abbreviated as EFT, Electronic Funds Transfer is the paperless act of transmitting money through a computer network.
- Electronic Industries Alliance
Abbreviated EIA, a trade association representing the U.S. high technology community. It began in 1924 as the Radio Manufacturers Association. The EIA sponsors a number of activities on behalf of its members, including conferences and trade shows. In addition, it has been responsible for developing some important standards, such as the RS-232, RS-422 and RS-423 […]
Elina is the corporate name of a networking and IT management solution provider. The company offers enterprise-class solutions for business continuity and visibility, through robust network security, reliable connectivity, and effective remote IT management. The company’s flagship product family is the ENPAQ suite of products that are designed to connect, secure, integrate, and manage connectivity, […]