OEM - Original equipment manufacturer. Computer maker.
operating system - The primary software in a computer, containing general instructions for managing applications, communications, input/output, memory and other low-level tasks. DOS, Windows, Mac OS, and UNIX are examples of operating systems.
opposite path - See OTP.
Orange Book - The document begun in 1990 which specifies the format of recordable CD. Three parts define magneto-optical erasable (MO) and write-once (WO), dye-sublimation write-once (CD-R), and phase-change rewritable (CD-RW) discs. Orange Book added multisession capabilities to the CD-ROM XA format.
OS - Operating system.
OSTA - Optical Storage Technology Association. (See Appendix C.)
OTP - Opposite track path. A variation of DVD dual-layer disc layout where readout begins at the center of the disc on the first layer, travels to the outer edge of the disc, then switches to the second layer and travels back toward the center. Designed for long, continuous-play programs. Also called RSDL. Contrast with PTP.
out of band - In a place not normally accessible.
overscan - The area at the edges of a television tube that is covered to hide possible video distortion. Overscan typically covers about 4 or 5 percent at the edges of the picture but can cover as much as 10 percent. |
