Control device for audio-visual display

摘要

A control device signals user inputs to an audio-video display. The control device may be configured as a pillow speaker and include a speaker for reproducing audio from the audio-video display. The control device is coupled to the audio-video display by wiring. Shared signals in the wiring are used to provide power to operate the control device and are used to signal the user inputs to the audio-video display. A touch panel is used to sense user inputs. The touch panel may be transparent with an underlay containing indicia of user-selectable commands located below the touch panel. The arrangement and selection of commands available to the user may be modified by changing the underlay.

主权项

1. A control device for an audio-visual display, comprising:
a touch panel configured to sense inputs from a user; a processor coupled to the touch panel and configured to transmit control signals to the audio-visual display based on the sensed inputs, wherein the control device receives power from the audio-visual display via wiring, and wherein the control signals are transmitted over the wiring; and an energy harvesting circuit configured to receive the power from the audio-visual display and produce a voltage signal for operation of the control device.