Television

Television

Any device used to transmit and recieve moving images, usually accompanied by sound.

Industry: Consumer electronics

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Television

Headend

Consumer electronics; Television

The central electronics facility of a cable broadband system where all signal sources are generated, gathered, processed, combined, and fed into the trunking/distribution system.

Hum

Consumer electronics; Television

In audio, it is a low pitched interference tone often picked up from AC power sources, while in cable broadband it is often a reference to visual Hum Modulation.

Hum modulation

Consumer electronics; Television

The undesired modulation of the visual carrier by power line frequencies and harmonics (or other low frequency disturbances) sometimes visible as bars rolling through the picture.

Hub

Consumer electronics; Television

A signal processing facility located between the headend and the signal distribution system in order to provide customised regional services.

Home theatre

Consumer electronics; Television

A recreation of the cinema experience in the home that can range from simple multichannel sound and large screen enhancements to the construction of theatre staging and seating.

Local oscillator

Consumer electronics; Television

The oscillator in superheterodyned equipment that generates the proper frequency signal needed to mix with the received signal to produce the desired intermediate frequency.