Abstract: An adaptive dithering apparatus analyzes an input video signal as a function of available primary shades and produces a select signal whose value is a function of the desired shade represented by the input video signal and of the available primary shades. A combiner combines the input video signal with a selected one of a plurality of dither signals to generate a dithered input video signal. The one dither signal is selected under the control of the select signal. Finally, an adjustor receives the dithered input video signal, the available shade signal, and the select signal and, under the control of the select signal, adjusts the dithered input video signal to have a value equal to one of the available primary shades. Thus, an input video signal may be dithered with a dither signal that is optimized for dithering an input signal that falls into a particular range of desired shades. That is, a different dither signal may be employed for each possible spacing of adjacent available primary shades.

Abstract: A stretchable harness-like apparatus enables physiological parameters of a patient to be measured while he or she is ambulatory or stationary. The invention has a chest band, an optional shoulder band(s), and an optional abdominal band that can house respiration, pulse and ECG sensors. The shoulder band(s) are attached to the chest band and all of the bands are worn on the body under a low tension. The apparatus is typically used in conjunction with on-body monitoring electronics and radio-linked to remote alerting modules or it can be hard-wired to on-body or remote monitoring and alerting equipment. The compliant nature of the device allows for accurate monitoring without sacrificing patient mobility or comfort.