Set-top Converter Box - This unit sits on top of the viewer's analog TV, receives the Digital TV signal, converts it to an analog signal, and then sends that signal on to the analog TV.
Sub-channels - OTA DTV stations can show multiple programs simultaneously, subject to the 6 MHz bandwidth limit. This is called multicasting.
Exposure - The result of allowing light to act on photosensitive material. The amount of exposure depends on both the intensity of the light and the amount of time the light is allowed to fall on the sensitive material. The exposure is dependant on the aperture size, shutter speed and the sensitivity if the light gathering material.
ROM - Read Only Memory. Used for static information on computing devices.
HD-Capable TV - A standard definition set with a digital tuner. (This term was probably invented to confuse people.)
DVI - (Digital Visual Interface) - This connector conveys HDTV image scanning signals in binary data form. The data rate is very high (1.65 Gb/s). Binary data is preferred by monitors that are not CRTs. DVI comes with a decryption option called HDCP which will decode encrypted programs such as first-run movies.
Pixel - A term common in computer imaging referring to a picture element.
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