Aspect Ratio
The ratio of its width to its height. It is commonly expressed as two numbers separated by a colon, as in 16:9. For an x:y aspect ratio, the image is x units wide and y units high.


To transmit (a program or some information) by radio or television.


A system of delivering television programming to consumers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fiber-optic cables.


Also known as cable television or community antenna television. A system that receives television broadcasts by antenna and relays the service to customers.


A transmission line that consists of a tube of electrically conducting material surrounding a central conductor held in place by insulators and that is used to transmit telegraph, telephone, television, and internet signals.


The distribution of cable television using digital video compression for distribution.


DTA (Digital Television Adapter)
A television tuner that receives a digital television transmission and converts the digital signal into an analog signal that can be received and displayed on an analog television set.


DVR (Digital Video Recorder)
An electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device.


Where a computer, television, or device receives a useable signal.


IPTV (Internet Protocol Television)
The delivery of television content over Internet Protocol networks. This contrasts with delivery through traditional terrestrial, satellite, and cable television formats. Unlike downloaded media, IPTV offers the ability to stream the source media continuously.


An electronic device used to operate another device from a distance, usually wirelessly.


The total number of pixels (Dots) available on a display screen or the total pixels contained within the processed picture.


Video On Demand
A media distribution system that allows users to access videos without a traditional video playback device and the constraints of a typical static broadcasting schedule.