Abstract: A medication delivery device measures a preselected physical parameter of a patient as well measures at least one preselected parameter in the patient's immediate environment that relates to the physical parameter. A control element compares the preselected physical parameter measured with the preselected environmental parameter measured. A first command signal is generated when a predetermined correlation exists between the two parameters, while a second command signal is generated when it does not. The command signal can be used to base a decision to dispense medication to the patient, or to change the patient's immediate environment.

Abstract: An endoscope apparatus is arranged to convert the image signal output from an imaging device into a standard video signal, effect image processing, such as outline emphasis, of the image signal, and display a reproduced image on a display. The endoscope apparatus has the function of stopping input to a memory circuit in accordance with the on action of a freezing switch, switching from a moving image to a still image, and providing a display of the still image. Accordingly, it is possible to select appropriate image processing characteristics in accordance with whether a moving image or a still image is to be displayed.