Glossary
A
Aspect ratio
The horizontal to vertical ratio of the displayed image. For standard TV's the horizontal/vertical ratio is 4:3, for
Authoring
The process of encoding the source material, or the process of adding control information to the encoded data, or converting the data to DVD format.
B
Bit rate
The transfer rate.
Bit stream
The digital data generated by the various encoding processes.
C
Chapter
Each chapter within a title.
Color variation signal
A signal that removes the brightnes signal from the G/ B/R signals and represents the hue and density.
Component
A video format that takes three separate video inputs with information for the three primary colors of light to create the video signal. There are G/B/R, Y/PB/PR and other formats.
Composite
A synchronous composite video signal that combines a signal combining the brightness and color frequency signals and a standard color burst signal.
Cursor
Generally, the point where you enter numbers.
D
Decode
The process of decoding a signal that has been encoded in a format standard, so that it restores to the original signal.
Dolby Digital
The Dolby Digital
Downmix
This function converts multichannel (three channels or more) sound formats for audio tracks to two stereo channels. This is usually performed when the number of program channels is larger than the number of speakers.
DTS (Digital Theater System)
A new surround format that holds more data than Dolby Digital to provide even better surround playback.
The number of channels is the same 5.1 channel of Dolby Digital but the use of a better audio compression ratio during digital recording means that it has higher S/ N playback. It also has a wider dynamic range for delicate sound separation.
E
Encode
The process of encoding a signal to meet a standard.
Extended K2 Processing
20 bit K2 processing extends 16 bit signals to 20 bit to improve signal resolution, and also expands the sampling frequency by two to improve the frequency band during playback. This allows better sound reproduction of the subtle nuances of the original for more realistic sound playback.
Version 2.0 further expands this capability to 24 bit 176.4kHz/192kHz.
G
Geographical region playback control (Regional
code)
A system that only allows playback of a disc in predetermined geographical regions. There are eight regions in the world, and each region has a number (Region No.) If the region number on the disc matches the region number assigned to the player, you can play the disc.
L
Letterbox
A technique for displaying wide screen video on a 4:3 TV without clipping the image by projecting a black, or other color, mask across the top and bottom parts of the screen. It is called by this name, since the appearance is similar to a letterbox.
Linear PCM audio
A lossless compression format for converting an analog audio signal to a digital signal.
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