MIL-HDBK-1300A
ei. Interface - 1. A concept involving the definition of the interconnection between two equipment items or systems. The definition includes the type, quantity, and function of the interconnecting circuits and the type, form, and content of signals to be interchanged via those circuits. Mechanical details of plugs, sockets, and pin numbers, etc., may be included within the context of the definition. 2. A shared boundary, e.g., the boundary between two subsystems or two devices. 3. A boundary or point common to two or more similar or dissimilar command and control systems, subsystems, or other entities against which or at which necessary information flow takes place. 4. A boundary or point common to two or more systems or other entities across which useful information flow takes place. (It is implied that useful information flow requires the definition of the interconnection of the systems which enables them to interoperate.) 5. The process of interrelating two or more dissimilar circuits or systems 6. The point of interconnection between user terminal equipment and commercial communication-service facilities.
ej. Interlace - A system for displaying images on a Cathode Ray Tube (CRT). First the odd lines are sent, then the even lines are sent.
ek. Interleaved - The descriptive term applied to the repetitive multiplexing of small groups of data units from each component in a scan in a specific order.
el. International Organization for Standardization - A global standards body.
em. ISO OSI Reference Model - A seven-layer protocol stack defined by the ISO.
en. International Telecommunication Union (ITU) - A civil international organization established to promote standardized telecommunication on a worldwide basis. Note: The CCIR and CCITT are committees under the ITU. The ITU headquarters is located in Geneva, Switzerland. While older than the United Nations (UN), it is recognized by the UN as the specialized agency for telecommunications.
eo. Interoperability - 1. The ability of systems, units, or forces to provide services to and accept services from other systems, units, or forces and to use the services so exchanged to enable them to operate effectively together. 2. The condition achieved among communications-electronics systems or items of communications-electronics equipment when information or services can be exchanged directly and satisfactorily between them and/or their users. The degree of interoperability should be defined when referring to specific cases. 3. The ability to exchange data in a prescribed manner and the processing of such data to extract intelligible information which can be used to control/coordinate operations.
ep. Inverse Discrete Cosine Transform (IDCT) - A mathematical transformation using cosine base functions that convert an array of basis function amplitudes into a corresponding block of samples.
eq. IREP - A field in the NITF image subheader used to indicate the color space (for example, YCbCr601) for compression.
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