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DVD Digital Versatile Disc. An optical disc about the size of a CD-ROM, but capable of storing an
entire movie.The technology uses MPEG-2 compression.Typical capacity for these discs is 4.5
GB, or about 133 minutes of digital video. Originally called 'Digital Video Disk'.
DVI DVI (Digital Video Interface) is a new form of video interface technology made to maximize
the quality of flat panel LCD monitors and high-end video graphics cards.
DVI is also a digital transfer method for HDTV, EDTV, Plasma Display, and other ultra-high-end
video displays for TV, movies, and DVDs.
FM Frequency Modulation. A method of combining an information signal with a carrier signal so
that it may be transmitted. FM radio is frequency modulated. Audio is encoded on the carrier
by varying the frequency in response to the audio.
Frequency The number of complete cycles per second of a musical tone or electronic signal, expressed in
Hertz (Hz).
Frequency response The frequency range in which an electronic component can accurately reproduce its input.
Humans can hear from 20 Hz to 20,000Hz (20kHz). An ideal component would have a
Frequency Response, totally flat or without any deviation, from 20Hz to 20 kHz. Frequency
Response specifications are measured in dB based on how closely a component’s response
resembles that of the ideal.
Gain A general term for an increase in signal power or voltage produced by an amplifier.
HDCP Your DFR9000 supports High bandwith Digital Content Protection (HDCP), owned by Intel.
HDMI High Definition Multimedia Interface. A specification developed by the HDMI Working Group
that combines multi-channel audio and high definition video and that controls signals into a
single digital interface for use with DVD players, digital television, and other audiovisual devices.
HDTV High Definition Television. HDTV refers to a complete product/system with the following
minimum performance attributes: a receiver that receives ATSC terrestrial digital transmissions
and decodes all ATSC Table 3 video formats; a display scanning format with active vertical
scanning lines of 720 progressive (720p), 1080 interlaced (1080i), or higher; aspect ratio
capabilities for displaying a 16:9 image; receives and reproduces, and/or outputs Dolby Digital
audio.
Hertz (Hz) The basic unit of frequency. One hertz equals one cycle per second.
Image A reproduction or imitation of a person or thing displayed by any type of visual media.
Interlacing A video frame is made up of two fields. Interlacing is the process of scanning the picture onto
a video screen whereby the lines of one scanned field fall evenly between the lines of the
preceding field.
LED Light emitting diode. A low-power, long life, light source, usually red, green or yellow in color.
Some LEDs can produce two different colors.
Level The relative intensity of an audio or video source.
LFE Low Frequency Effects channel. A special channel of 5 to 120Hz of information intended for
special effects such as explosions in movies.The LFE channel has an additional 10 dB headroom
in order to accomodate the required level.
Line out Audio output, typically in level range of 1-2 Volts.This may be 10,000 -50,000 ohms, at -10dB
or -20dB.
L/R Audio This abbreviation stands for Left and Right audio.
Macrovision Macrovision provides licensing and copy protection solutions for the video, music, software and
hardware industries.
Modulation The process of adding an information signal to a carrier frequency to allow it to be
transmitted.Thus, the carrier is 'modulated' by the information signal, as in a modem.
Multichannel DVDs are formatted to have each sound track constitute one sound field. Multichannel refers
to a structure of sound tracks having three or more channels.