Abstract: The present invention addresses some of those drawbacks of the prior art through a television control system that controls different models of predetermined number of hospital televisions by measuring the TV's distinct voltage level. The control system is connected to an operating hospital television and has an input device, a controller, a first and second set of control signals, and a voltage reader device. The input device is operable for generating at least one television input signal that corresponds to a television input from a person. The first set of control signals have at least one individual control signal designed to correspond to a first hospital television which is one of the predetermined number of hospital televisions. The second set of control signals have at least one individual control signal designed to correspond to a second hospital television which is one of the predetermined number of hospital televisions, and not the one controlled by the first set of control signals.

Abstract: An optical apparatus for measuring physical quantities, comprising an optical transducer (33) for sensing position, outgoing and return optical fibers (20,23), and an electronic control module (43). Light is generated at the control module and is transmitted by the outgoing optical fiber (20) to the optical transducer (33), which simultaneously varies the relative intensities of two different colors in a dissimilar manner in response to location of a positionable device (34,35) in the optical transducer. The modified intensity is transmitted back to the control module via the return optical fiber (23). The control module (43) measures the intensities of the two returning colors, and then outputs an electrical signal proportional to the intensity ratio for analog applications, or, alternatively, tests the intensity ratio against preselected constants and outputs discrete signals for digital application.