Glossary
Bitstream
This is a signal compressed and converted into digital form. It is
converted back to a
CPRM (Content Protection for Recordable Media)
CPRM is technology used to protect broadcasts that are allowed to be recorded only once. Such broadcasts can be recorded only with
Decoder
A decoder restores the coded audio signals on DVDs to normal. This is called decoding.
Dolby Digital
This is a method of coding digital signals developed by Dolby Laboratories. Apart from stereo
Down-mixing
This is the process of remixing the
DTS (Digital Theater Systems)
This surround system is used in many movie theaters. There is good separation between the channels, so realistic sound effects are possible.
Dynamic range
Dynamic range is the difference between the lowest level of sound that can be heard above the noise of the equipment and the highest level of sound before distortion occurs. Dynamic range compression means reducing the gap between the loudest and softest sounds. This means you can hear dialog clearly at low volume.
Film and Video
Film is 24 or 30 frames per second, with motion picture fi lm generally being 24 frames per second.
Video is 60 fi elds per second (2 fi elds making up 1 frame).
Finalize
A process that makes play of a recorded
Folder
This is a place on the memory card where groups of data are stored together. In the case of this unit, it refers to the place where still pictures (JPEG) are stored.
Formatting
Formatting is the process of making media such as
You can format
Formatting irrevocably erases all contents.
Frame and field
Frame refers to the single images that constitute the video you see on your TV. Each frame consists of 2 fi elds.
| ||
Frame | Field | Field |
A frame still shows 2 fi elds, so there may be some blurring between them, but picture quality is generally better.
A fi eld still shows less picture information so it may be rougher, but there is no blurring.
HDMI (High-Definition Multimedia Interface)
Unlike conventional connections, it transmits uncompressed digital video and audio signals on a single cable. This unit supports high- defi nition video output (720p, 1080i and 1080p) from HDMI AV OUT terminal. To enjoy
JPEG (Joint Photographic Experts Group)
This is a system used for compressing/decoding color still pictures. If you select JPEG as the storage system on digital cameras, etc., the data will be compressed to
MP3 (MPEG Audio Layer 3)
An audio compression method that compresses audio to approximately
Pan & Scan/Letterbox
In general,
fit regular TVs (4:3 aspect ratio). 2 styles of picture, “Pan & Scan” and “Letterbox”, deal with this problem.
Pan & Scan: The sides are cut off so the picture fi lls the screen.
Letterbox: Black bands appear at the top and bottom of the picture so the picture itself appears in an aspect ratio of 16:9.
Progressive/Interlace
NTSC, the video signal standard, has 480 interlaced (i) scan lines, whereas progressive scanning uses twice the number of scan lines. This is called 480p.
Using progressive output, you can enjoy the
Your TV must be compatible to enjoy progressive video.
Protection
You can prevent accidental erasure by setting writing protection or erasure protection.
Sampling frequency
Sampling is the process of converting the heights of sound wave (analog signal) samples taken at set periods into digits (digital encoding). Sampling frequency is the number of samples taken per second, so larger numbers mean more faithful reproduction of the original sound.
Thumbnail
This refers to a miniature representation of a picture used to display multiple pictures in the form of a matrix.
1080i
In one high defi nition image, 1080 alternating scan lines pass every 1/60th of a second to create an interlace image. Because 1080i more than doubles current television broadcasts of 480i, the detail is much clearer and creates a more realistic and rich image.
1080p
In one high defi nition image, 1080 scan lines pass at the same time every 1/60th of a second to create a progressive image. Since progressive video does not alternate scan lines like interlace, there is a minimal amount of screen fl icker.
720p
In one high defi nition image, 720 scan lines pass at the same time every 1/60th of a second to create a progressive image. Since progressive video does not alternate scan lines like interlace, there is a minimal amount of screen fl icker.
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