I need help understanding some of the technical terms and acronyms in this FAQ
I need help understanding some of the technical terms and acronyms in this FAQ
(Advanced Audio Coding, MPEG-4-AAC) An audio format used in MPEG-4.
Digital audio encoding technique that Dolby developed for multi-channel sound applications.
(Advanced Television Systems Committee) The name of the standardization committee in North America that began to develop standards for digital television, starting at the end of the 1970s. Used today as a term for digital television broadcast over the air and received via antenna in North America and South Korea.
Programming Guide information (EPG) data that is sent along with the ATSC data stream.
An archival copy of data on a different piece of storage media.
A peripheral that is supplied with electrical power via the FireWire or USB connector of the Macintosh.
(Conditional Access) The process that decrypts television uses the CA module to grant access to programming.
(Conditional Access Module) This PC card (also called CA module) enables DVB reception of encrypted television and radio. A programming subscriber receives a Smartcard from a Pay TV provider, which needs to be inserted into a CA module, which gets inserted into a standardized slot on the set top box or television adapter. The CA module compares the encryption codes sent by the television signal with those on the card. If they are valid, the programming is displayed.
(Common Interface) Standardized slot on DVB set top boxes or TV adapters for the CAM.
Coaxial connector for audio or video signals. Different colors designate usage: Red for the right audio channel, white for the left audio channel, yellow for video.
(Clear Quadrature Amplitude Modulation) Refers to the standard for transmitting digital video and audio signals in cable networks.
High frequency compatible cable with a coaxial inner conductor that is used for cable and satellite television reception.
A name for the method that transforms data into other formats via encoding and decoding. There are hardware and software codecs. When using digital formats such as MPEG, MP3, AAC, etc. the method used for decoding must match the one used for encoding. Every encoding of data involves compressing it, which is usually lossy. There are lossless codecs available, but the compression ratios that are sustainable with these codecs do not lend themselves for television usage.
Analog video format that combines brightness, color, and synchronization information into one signal.
The unit inside a set top box or TV adapter that decodes a digital television broadcast.
Refers to a method that reduces the motion artefacts inherent in the display of interlaced material on non-interlaced screens.
The conversion of an analog signal into a digital one.
A MPEG-4 codec sold by DivX, Inc.
A digital sound format developed by Dolby Laboratories. Dolby Digital can combine up to 6 audio channels into one encoded stream. The most popular combinations are Dolby Digital 2.0 (Stereo) and Dolby Digital 5.1.
(Digital Video) Standard for a digital recording technique for video data on video recording decks and camcorders. The standard refers to the storage media as well as the compression algorithm.
(Digital Video Broadcasting group) European standardization commission for digital television.
Programming Guide information (EPG) data that is sent along with the DVB data stream.
Digital radio that can be received by DVB compatible set top boxes or TV adapters or other specialized devices.
DVB standard that defines the transmission of digital video and sound signals in cable networks.
DVB standard that defines the transmission of digital video and audio signals via antenna to mobile devices such as cellular phones, smart phones, PDAs, etc.
DVB standard that defines the transmission of digital video and sound signals via satellite.
Refinement of the DVB-S standard that achieves an approximately 30% higher data rate. DVB-S2 requires a new tuner, presently shipping receivers, set top boxes, and TV adapters cannot be upgraded.
DVB standard that defines the transmission of digital video and sound signals via terrestrial antennas.
(Digital Versatile Disc) Optical storage medium, similar to CDs but with larger storage capacity, between 4.7 and 18 GB.
(Electronic Program Guide) A digitally available listing of available television programming.
An interface standard developed by Apple (also referred to as IEEE 1394) for data transfer between computers and peripherals.
A single picture of a movie. A film is composed of frames that are played back sequentially. To trick the human eye into not seeing individual pictures, the frames are played back rapidly.
Playback speed or frame repetition rate of a video or an animation. Specified as frames-per-second (fps.) A larger fps value improves video quality, but also increases the volume of video data. To render motion realistically, the minimum frame rate must be 15 fps; movies shown in theaters are played at 24 fps, the PAL system uses 25 fps, and NTSC uses 29.97 fps.
TV programming that can be accessed without a CA module.
Video codec by Apple to compress video efficiently, yet retain HDTV quality. The underlying technology is based on MPEG. Apple includes H.264 with the latest version of QuickTime 7.
HDTV 1080i (50/60Hz)
HDTV format with 1080 lines and a frame rate of 50 or 60 interlaced half pictures (fields.)
HDTV 720p (50/60Hz)
HDTV format with 720 lines and a frame rate of 50 or 60 full pictures (progressive scanning.)
(High-Definition Digital Video) A format that enables recording HDTV onto a standard DV tape cassette. Developed by Canon, Sony, Sharp and JVC.
A method of transmitting analog television that uses two fields (half pictures) to transmit a single frame (full picture). A field contains every second line of a picture. Even and odd lines are transmitted one after another. The fields are taken at slightly different times.
(Low Noise Block Converter) Electronics for reception of satellite television that are located at the focal point of a satellite antenna.
This standard for compression of movie data was developed in the 1980s. The goal was to bring the compressed data rate down to the data rate of a standard audio CD (1.5 MBit/sec max.) Video CDs contain data in MPEG-1 format.
MPEG standard for video decoding with video compression and audio decoding with audio compression. In both cases the compression is lossy. MPEG-2 was introduced in 1994 as a successor to MPEG-1. MPEG-4 is the successor to MPEG-2. On the video side, MPEG-2 offers higher quality and data rates than its predecessor (up to 15 Mbit/sec or up to 50 Mbit/sec with higher color depth.) MPEG-2 gained wide distribution through the DVD format, because most DVDs use MPEG-2 compression. SVCDs also use MPEG-2 at a very low data rate. The MPEG standard is also the foundation for digital television via antenna, cable, or satellite (DVB-T, DVB-C, DVB-S).
MPEG-2 Transport Stream
The MPEG-2 specifications define the basis for the transmission of digital television under the heading MPEG-2 Transport Stream. A transport stream carries the video and audio signals as well as additional information such as alternate audio tracks, subtitles, teletext, WSS, EPG, etc. in a format that has been standardized world-wide. Serves as a container for all formats used with digital TV.
Most recent MPEG standard that describes methods for video and audio compression. MPEG-4 expands upon MPEG-2 and offers support for video objects, 3D content, and denser compression.
(National Television System Committee) United States standardization organization that defined the US color television standard ?NTSC? in 1953. The system has been adoped in additional countries such as Canada, Mexico, Japan, South Korea, Taiwan, and others.
(Phase Alternation Line) Television standard in use in Europe, Australia, Africa, and parts of Asia.
Public television is funded by private donations and state taxation. Private television is funded by income generated by advertising. To avoid watching advertising, viewers can purchase subscriptions to Pay TV premium channels that offer undisturbed movie watching.
A method to deinterlace by doubling the picture frame rate and advanced motion detection. Used by high end plasma and LCD televisions and is optionally available in EyeTV.
(Quadrature Amplitude Modulation) A modulation method to transmit digital video and audio signals via cable networks.
Technology developed by Apple to play back multimedia content on Mac OS and Windows.
(Sony/Philips Digital Interface) A standardized hardware interface to tranfer digital audio data via an optical cable.
A television standard developed in 1957 that transfers color information on a frequency modulated carrier signal. SECAM is used in France and in some eastern European countries, and in the Middle East.
(Super-Video-CD) A format that improves on the Video CD format. The picture is encoded in MPEG-2 format, similar to DVDs, with a variable bit rate capped at 2.6 Mbit/sec.
(Separated Video) Video hardware interface where brightness and color information is transmitted on separate cables.
Our former provider of electronic programming information for the United States.
A transmission channel on a satellite. A transponder can hold one analog channel or several digital channels.
A programming guide provider in several European countries.
Our current provider of electronic programming information for the United States and Canada.
(Video-CD) A CD that contains pictures and sound. Because the capacity is limited to 74 minutes and the quality is barely that of VHS tapes, the Video CD format was quickly superseded by the DVD format.
(Video Home System) JVC developed the video recording system for consumers in 1975 in the United States and was introduced in Europe shortly thereafter. It dominated the format war in the early 1980s and pushed its competitors Betamax and Video 2000 out of the market.
Component video format that separates picture information into brightness (Y) and color (Red/U, and Blue/V).
22 May 2008 04:25 PM
This answer was helpful
This answer was not helpful
Contact Tech Support
Help Desk Software By Kayako eSupport v3.40.01