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(Fox59.com)-INDIANAPOLIS (March 26, 2014) — A family claims they are being terrorized by their cable box. For more than a week, personal and harassing messages are showing up on their TVs.
this part is especially funny. theyre over analyzing it and its probably just some neighbor kid with a universal remote
Whoever did this has had to have had physical access to the apartment (or the area outside the apartment window) at some time or another,” said Cate. “That access could have been as little as sticking an LED-like bulb through a ceiling or wall or in a light fixture. The LED-like bulb must have a power source; it has to be plugged in or have a connected battery pack somewhere nearby
An opto-isolator contains a source (emitter) of light, almost always a near infrared light-emitting diode (LED), that converts electrical input signal into light, a closed optical channel (also called dielectrical channel), and a photosensor, which detects incoming light and either generates electric energy directly, or modulates electric current flowing from an external power supply.opto-isolator can transfer the light signal not transfer the electrical signal . The sensor can be a photoresistor, a photodiode, a phototransistor, a silicon-controlled rectifier (SCR) or a triac. ]Because LEDs can sense light in addition to emitting it, construction of symmetrical, bidirectional opto-isolators is possible. An optocoupled solid state relay contains a photodiode opto-isolator which drives a power switch, usually a complementary pair of MOSFETs. A slotted optical switch contains a source of light and a sensor, but its optical channel is open, allowing modulation of light by external objects obstructing the path of light or reflecting light into the sensor.