Wilco
02-13-2002, 09:35 AM
Advanced Television Systems Committee (ATSC): The group who sets the standards for digital TV, both high and standard definitions.
Analog TV Broadcast (also known as NTSC): A video signal in the form of a wave that constantly changes shape as color, brightness, and motion within the video image change. We will be referring to this as a traditional signal or picture.
Artifacts: Unwanted elements in the video image resulting from video signal transmission.
Aspect Ratio: The ratio of picture width to picture height. May be like a movie screen (16:9), or like a traditional TV (4:3).
Bandwidth: The path size for digital or traditional information to flow. The improved compression used with digital signals allow for more and varying types of information to be sent and received simultaneously.
Channel: Bandwidth section of the broadcasting spectrum allocated for digital or traditional broadcasts.
Component Video: A type of connection usually marked by red, green, and blue jacks that uses three RCA cables to carry the luminance (brightness) and chrominance (color) signals components of a color video signal. This type of connection is becoming more common all the time and yields a better picture than even S-Video connections.
Composite Video: A traditional video signal that includes the luminance (brightness) and chrominance (color) signals in a single wire.
Compression: A manipulation of digital data that reduces the amount of picture information without noticeably degrading picture quality. Compression allows higher quality pictures to be transmitted in the small channel space currently used by traditional TV broadcasts. It will become a more useful feature when digital technology allows broadcasters to send both data and images of the same object simultaneously, such as statistics on the opposing team’s quarterback while a play is in motion.
Datacasting: Transmission of data to your television through a portion of the bandwidth not used by video information. This digital feature is not yet available.
Digital TV (DTV): A technology that transmits information as ones and zeros as opposed to transmitting the information in wave form. The digital signal is read by a digital TV much like a computer.
Digital TV Receiver: Gathers and translates digital information into a form understood by a digital TV. This will also act as an ATSC (digital) tuner on your traditional TV set.
Dolby Digital®/AC3: Digital audio with five channels of sound (center, front right, front left, rear right, rear left) plus a subwoofer channel.
Down-convert: Converting a higher resolution format signal into a lower resolution format signal (e.g., a 1080i input to a 480p display).
Federal Communications Commission (FCC): The government agency that mandates what broadcast formats are to be used. It approved the digital format and applied the 2006 date for total compliance.
High Definition: The most recognized format of digital television, which provides the clearest, highest resolution picture. Often called 1080i or 720p.
IEEE 1394: The standard interface for the transfer of high-speed digital data between devices such as a digital TV receiver and a digital VCR. May also be referred to as "fire wire" and "i.link."
Interlaced Scanning: A video image consists of multiple frames. Frames are multiple lines of video put together so closely they appear as a solid picture. Interlaced scanning fills in odd lines, then the even lines, to produce a frame of video.
Letterbox: The black bars that appear either on the top and bottom or sides of a TV screen. This happens when the broadcast format is different from the display format. For example, for a movie is broadcast in 1080i (widescreen), black bars will appear on the top and bottom unless you are watching the movie on a HD widescreen set.
MPEG-2: The digital compression standard developed by the Motion Picture Experts Group that allows data to be sent with images in a small path.
Mode: A setting on the digital TV receiver and digital television that allows you to display the correct broadcast/display format.
Multicast: The simultaneous transmission of multiple programs on one digital TV channel. This represents a future capability of digital.
NTSC (National Television Standards Committee): Group responsible for approving the traditional broadcast standard still being used today.
Pixel: A picture element. The single point of color in a video image. The more pixels, the better the picture appears.
Progressive Scanning: A video image consists of multiple frames. Frames are multiple lines of video put together so closely they appear as a solid picture. Progressive scanning fills each line consecutively (e.g. 1,2,3,4) until the frame is complete.
Resolution: The number of pixels in a video image. The greater the number of pixels, the higher the resolution.
Set-top box: See "digital TV receiver."
Simulcast: Broadcasting the same program on two different channels or frequencies. The FCC is mandating that all broadcasters simulcast in digital and traditional formats until 2006.
Standard Definition: A digital format of 480p. With the help of a digital TV receiver, a standard-definition television can receive a high-definition signal (1080i) and display it on a 480p format (DVD quality). Today’s traditional TVs display a format of 480i.
S-video: Keeps luminance and chrominance signals separate. Alloys you to connect a DirecTV system, DVD player, or other video source with S-video outputs directly to the luminance and chrominance circuits of the TV. This yields a picture free of color artifacts.
enjoy
Analog TV Broadcast (also known as NTSC): A video signal in the form of a wave that constantly changes shape as color, brightness, and motion within the video image change. We will be referring to this as a traditional signal or picture.
Artifacts: Unwanted elements in the video image resulting from video signal transmission.
Aspect Ratio: The ratio of picture width to picture height. May be like a movie screen (16:9), or like a traditional TV (4:3).
Bandwidth: The path size for digital or traditional information to flow. The improved compression used with digital signals allow for more and varying types of information to be sent and received simultaneously.
Channel: Bandwidth section of the broadcasting spectrum allocated for digital or traditional broadcasts.
Component Video: A type of connection usually marked by red, green, and blue jacks that uses three RCA cables to carry the luminance (brightness) and chrominance (color) signals components of a color video signal. This type of connection is becoming more common all the time and yields a better picture than even S-Video connections.
Composite Video: A traditional video signal that includes the luminance (brightness) and chrominance (color) signals in a single wire.
Compression: A manipulation of digital data that reduces the amount of picture information without noticeably degrading picture quality. Compression allows higher quality pictures to be transmitted in the small channel space currently used by traditional TV broadcasts. It will become a more useful feature when digital technology allows broadcasters to send both data and images of the same object simultaneously, such as statistics on the opposing team’s quarterback while a play is in motion.
Datacasting: Transmission of data to your television through a portion of the bandwidth not used by video information. This digital feature is not yet available.
Digital TV (DTV): A technology that transmits information as ones and zeros as opposed to transmitting the information in wave form. The digital signal is read by a digital TV much like a computer.
Digital TV Receiver: Gathers and translates digital information into a form understood by a digital TV. This will also act as an ATSC (digital) tuner on your traditional TV set.
Dolby Digital®/AC3: Digital audio with five channels of sound (center, front right, front left, rear right, rear left) plus a subwoofer channel.
Down-convert: Converting a higher resolution format signal into a lower resolution format signal (e.g., a 1080i input to a 480p display).
Federal Communications Commission (FCC): The government agency that mandates what broadcast formats are to be used. It approved the digital format and applied the 2006 date for total compliance.
High Definition: The most recognized format of digital television, which provides the clearest, highest resolution picture. Often called 1080i or 720p.
IEEE 1394: The standard interface for the transfer of high-speed digital data between devices such as a digital TV receiver and a digital VCR. May also be referred to as "fire wire" and "i.link."
Interlaced Scanning: A video image consists of multiple frames. Frames are multiple lines of video put together so closely they appear as a solid picture. Interlaced scanning fills in odd lines, then the even lines, to produce a frame of video.
Letterbox: The black bars that appear either on the top and bottom or sides of a TV screen. This happens when the broadcast format is different from the display format. For example, for a movie is broadcast in 1080i (widescreen), black bars will appear on the top and bottom unless you are watching the movie on a HD widescreen set.
MPEG-2: The digital compression standard developed by the Motion Picture Experts Group that allows data to be sent with images in a small path.
Mode: A setting on the digital TV receiver and digital television that allows you to display the correct broadcast/display format.
Multicast: The simultaneous transmission of multiple programs on one digital TV channel. This represents a future capability of digital.
NTSC (National Television Standards Committee): Group responsible for approving the traditional broadcast standard still being used today.
Pixel: A picture element. The single point of color in a video image. The more pixels, the better the picture appears.
Progressive Scanning: A video image consists of multiple frames. Frames are multiple lines of video put together so closely they appear as a solid picture. Progressive scanning fills each line consecutively (e.g. 1,2,3,4) until the frame is complete.
Resolution: The number of pixels in a video image. The greater the number of pixels, the higher the resolution.
Set-top box: See "digital TV receiver."
Simulcast: Broadcasting the same program on two different channels or frequencies. The FCC is mandating that all broadcasters simulcast in digital and traditional formats until 2006.
Standard Definition: A digital format of 480p. With the help of a digital TV receiver, a standard-definition television can receive a high-definition signal (1080i) and display it on a 480p format (DVD quality). Today’s traditional TVs display a format of 480i.
S-video: Keeps luminance and chrominance signals separate. Alloys you to connect a DirecTV system, DVD player, or other video source with S-video outputs directly to the luminance and chrominance circuits of the TV. This yields a picture free of color artifacts.
enjoy
