MIL-HDBK-1300A
hw. Run-length encoding - 1. A redundancy-reduction technique for facsimile in which a run of consecutive picture elements having the same state (gray scale or color) is encoded into a single codeword.
hx. Sample - For the NITFS, one element in the two-dimensional array that comprises a band of the image.
hy. Scan - For the MIL-STD-188-198A (JPEG), a single pass through the data for one or more of the components in an image.
hz. Scan header - The start-of-scan marker and scan parameters that are coded at the beginning of a scan.
ia. Secondary Imagery Dissemination (SID) - The process of post-collection electronic dissemination of Command, Control, Communications, and Intelligence (C3I) digital imagery and associated data, over a time interval ranging from near-real time to a period of days, at a level of quality determined by receiver requirements.
ib. Secondary Imagery Dissemination System (SIDS) - The equipment and procedures used in the electronic transmission and receipt of exploited nonoriginal quality imagery and imagery products in other than real or near-real time.
ic. Sequential (coding) - One of the lossless or DCT-based coding processes defined in this standard in which each component of the image is encoded within a single scan.
id. Sequential DCT-based - The mode of operation that refers to any one of the processes defined in MIL-STD-188-198A (JPEG).
ie. Simplex - For NITFS, providing transmission in only one preassigned direction.
if. Source code - Essentially, a computer program written by a programmer. Source code must be processed by an assembler, interpreter, or compiler and converted to an executable form before execution.
ig. Subvoice-grade channel - A channel with a bandwidth narrower than that of a voice- grade channel. Note: Such a channel is often a subchannel of a voice-grade line.
ih. Synchronous - Pertaining to two or more processes that depend upon simultaneous occurrence of specific events such as a common timing signal. Note: "Isochronous" and "anisochronous" are characteristics, while "synchronous" and "asynchronous" are relationships.
ii. Synchronous transmission - Data transmission in which the time of occurrence of each signal representing a bit is related to a fixed time base. Note: "Isochronous" and "anisochronous" are characteristics, while "synchronous" and "asynchronous" are relationships.
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