| 摘要 |
A television provides a full range of content to be rendered to the user, while complying with strict hospital electrical isolation standards. An interface unit receives control inputs from a pillow speaker, translates the control inputs to appropriate commands, and outputs the commands to a television via a commercial grade control interface, and to a set top box. The interface unit receives an audio output signal from the television, galvanically isolates the audio signal, selectively amplifies the audio signal in response to control inputs from the pillow speaker, and outputs the volume-controlled, isolated audio signal to the pillow speaker. In this manner, the television can display any programming carried on a cable (a direct input to the television), as well as any audio-video content provided to the television from the set top box, which may include pay-per-view, instructional videos, interactive gaming, web browsing, and the like.
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