METHODS AND APPARATUS TO DETECT AN OPERATING STATE OF A DISPLAY

摘要

Methods and apparatus to detect an operating state of a display are disclosed. An example device to detect an operating state of a display includes an optical fiber (230), an optical-to-electrical converter (242), and a logic circuit (246). The optical fiber (230) is optically coupled to a light source (224) of the display. The light energy source is configured to emit light. The optical-to-electrical converter (242) is coupled to the light source (224) via the optical fiber (230) and configured to convert light from the light source (224) into an electrical signal. The logic circuit (246) is coupled to the optical-to-electrical converter (242) and configured to generate an output signal indicative of the operating state of the display based on the electrical signal.