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1080i
- 1080i
represents 1,080 lines of resolution scanned in
alternate fields consisting of 540 lines each. 1080i is
the most commonly used HDTV format, and has been adopted
by most television broadcast, cable, and satellite
outlets as their HDTV broadcast standard.
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1080p
-
1080p represents 1,080 lines of resolution scanned
sequentially. In other words, all lines are scanned in
progressively, providing the most detailed high
definition video image that is currently available to
consumers. However, since 1080p is not officially part
of the FCC's approved HDTV broadcast standards, it is
displayed either as a result of video upscaling through
a specially modified DVD player, video scaler, or a Blu-ray
Disc Player, in combination with a 1080p input capable
video display device (such as a Television or Video
Projector) OR by on-board video processing within the
Display device itself than can upscale all input sources
to 1080p.
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16:9
- A widescreen aspect ratio also called Enhanced Format.
16 units of measure wide per 9 units high. Widescreen
format presents images in the same view as the movie
theater.
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24/96
- Usually refers to audio (music) discs that were
created using the 2-channel DVD specification for audio
(not the same as DVD-audio). 24 bits and 96,000Hz
sampling rate. Provides a noticeable sonic improvement
over the older CD audio specification. Most DVD players
will play the 24/96 music discs.
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3-2
Pulldown -
(Also 2-3 Pulldown, both are correct). A form of video
processing that converts the 24 frames per second of
film to NTSC video standards used by television. This
processing is usually attributed to your DVD player but
can also be performed as part of the television's
scaling process.
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4:3
- Standard television sets aspect ratio. The size of
television screens for decades before widescreen came
along at 16:9. The standard television aspect ratio is
four units of measure wide for every three high.
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480i
-
480i represents 480 lines of resolution scanned
alternately - with all odd lines scanned first, then all
even lines. 480i is also commonly referred to as
standard video resolution.
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480p
-
480p represents 480 lines of resolution scanned
progressively. 480p is similar to the same resolution
of standard broadcast TV (and is referred to as SDTV or
Standard Definition Television), but the image is
scanned progressively, rather than in alternate fields.
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5.1
Surround Sound
- An audio format for Home Theater surround sound
consisting of six discreet channels of sound, meaning
all six speakers can produce unique sounds at one time.
The .1 represents the subwoofer or Low Frequency
Effects (LFE) channel at only 1/10th the bandwidth of
the other five channels.
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7.1
Surround Sound
- An audio format for Home Theater surround sound that
improves on 5.1 by adding two extra "back" channels.
The channels are not discreet but a matrix of the two
rear channels.
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720p
-
720p represents 720 lines of resolution scanned
progressively. A digital TV format that is a part of
current HDTV standards. Image detail is at least 30%
sharper than 480p. Although 720p is high-definition, it
takes up less bandwidth than 1080i. |
