dither

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dither

[′dith·ər]
(communications)
A technique for representing the entire gray scale of a picture by picture elements with only one of two levels (“white” and “black”), in which a multilevel input image signal is compared with a position-dependent set of thresholds, and picture elements are set to “white” only where the image input signal exceeds the threshold.
(control systems)
A force having a controlled amplitude and frequency, applied continuously to a device driven by a servomotor so that the device is constantly in small-amplitude motion and cannot stick at its null position. Also known as buzz.
References in periodicals archive ?
And while he dithered and delayed, the Lakers and their depleted corps of power forwards took on one of their toughest rival firms, the Twin Towers of San Antonio.
For example, while the FDA dithered over approving the drug Interleukin-2 (already approved in at least nine other countries), some 25,000 Americans died of kidney cancer.