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Koninklijke Philips Corporation N.V.

John J Liston

James Martin Weiland

Ronald Dean Fligge

Louis Welty Hiener, Iii

An physiological data acquisition apparatus includes three or more leads, at least one AC current source, a switching mechanism structured to selectively couple the current source to selected lead pairs to inject an AC current across the selected lead pairs which produces an AC voltage across the selected lead pair, and a processing device. The processing device is structured to (i) determine an impedance across the current selected lead pair based on the AC voltage, (ii) determine whether the impedance is less than a predetermined threshold, (iii) if the impedance is less than the predetermined impedance threshold cause the current selected lead pair to be used for generating physiological parameter data, and (iv) if the impedance is not less than the threshold cause the switching mechanism to couple the at least one AC current source to a new selected pair of the leads.

Method and apparatus for selecting differential input leads

Shoelace securing system

A headband for use in holding a flashlight to the side of a user's head. The flashlight is attached to a plate. The plate is releasably attached to the headband. When the user desires to change the orientation of the flashlight, the plate is removed and reattached at the desired orientation. The flashlight can thus be oriented so as to cause the flashlight beam to be directed generally along the user's line of sight or any other desirable axis.

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Salt Lake City, UT, United States of America

John J Liston