Digital Cable > Glossary
Analog TV Analog television technology has been around for nearly half a century. Analog transmits conventional or standard television signals to consumers. Because analog signals continuously vary, there are varying degrees in color and brightness.
DCT (Digital Consumer Terminal) DCT is a device that connects to the cable coming into your home. A DCT allows you to view digital channels on your television. DCTs typically feature an interactive program guide and parental controls -- this also allows you to order Pay-Per-View movies and events right from the terminal or set-top box using your remote.
Digital Cable Digital Cable is a method of transmitting compressed data (aka television signals). Because digital data is smaller, more information can be transmitted. The result is a better picture, better sound and more channels. Customers typically require a DCT to receive digital channels in their home.
DTV DTV is also known as Digital Television. DTV signals are recorded, broadcast and processed in a digital format. Currently, 18 different DTV formats have been specified, including SD and HD formats. DTV broadcasts are usually sharper than analog broadcasts.
DVR DVR stand for Digital Video Recorder. The DVR is a device that allows you to control what you watch and when you watch it. DVRs also allow users to store and access TV programs -- akin to a VCR, but without a videotape. DVRs also allow users to pause live TV and choose the programs to record.
EDTV EDTV is also known as Enhanced Definition Television. EDTV is defined as television that displays the picture (either from SDTV or HDTV) at a resolution of 480p lines in either 4:3 or 16:9 aspect ratio. EDTV is not HDTV.
HDTV HDTV is also known as High Definition Television. HDTV is defined as a TV system having approximately two times the vertical and horizontal picture resolution of today's standard definition TV (SDTV) and having an aspect ratio of 16:9. Two HDTV are currently in use; (a) 1080i - 1920 pixels per line and 1080i lines per frame and (b) 720p - 1280 pixels per line and 720p lines per frame. HDTV can be easily recognized by its spectacular picture resolution and impressive 5.1 channel surround sound.
PPV (Pay-Per-View) Pay-Per-View is a premium service that allows viewers to order movies and events through their remote or by making a telephone call to their service provider. Since the customer selects which movies or events they choose to see, customers only pay for what they order.
SDTV Also known as Standard Definition Television. SDTV is based on 480 lines of vertical resolution and may have either 4:3 or 16:9 aspect ratios and may include surround sound. Several SDTV programs are sent together to form the simulcast bundle.
VOD (Video on Demand) Video on demand is a premium service that allows viewers to rent movies from their television remote or Digital Consumer Terminal (DCT). VOD differs from Pay-Per-View in that VOD allows viewers to begin watching selected movies usually anytime after they have rented them. VOD also typically allows viewers to fast-forward, rewind, stop and resume viewing selected movies (similar to a VCR).
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