Abstract: A mobile audio visual presentation system contained within a telescoping tower platform that provides height adjustment means for video display devices. The telescoping tower provides stability, transportability, versatility and optimum sound/video projection angles for multimedia audio visual presentations. The system remotely programs and controls a plurality of multimedia projection devices by interfacing ambulatory hand-held controllers, via radio frequency, to select and control multimedia elements within the system. The radio frequency signals containing desired commands are transmitted and automatically switched to multimedia devices sensitive to either infrared signals or X.10 power line carrier signal (PLC).

Abstract: A system for monitoring the operation of a cardiac pacemaker and the response of the patient to the pacemaker includes an ARRHYTHMIAGRAPH that displays the occurrence of pacemaker signals in relation to overall QRS cycles and analyses the relationship of pacemaker signals to QRS cycles. A predetermined set of values are used to compare against measured QRS and pacemaker values. The result of the comparison is a determination of whether a QRS was initiated by a pacemaker signal. This determination is conveyed to display means where an ARRHYTHMIAGRAPH is used to illustrate the result in a visually discernible manner.