| 摘要 |
<p>A viewer-presence sensor unit (12) for controlling operation of a television set (10). The sensor unit (12) first includes a detector (18) for sensing presence of a living being near the television set and a timer (20) for measuring the amount of time of non-presence of a living being. Second, the sensor unit incorporates a power interruption switch (22) activated by the detector for terminating power to the television set upon reaching a measurement of a term of time of non-presence of a living being. The term of time is selectable period, and can range from less than an hour to 24 hours depending upon the needs and viewing habits of a user. Detectors can non-limitedly be chosen from motion sensor and heat sensors, and have utility up to a reasonable viewing distance from the television set.</p> |
