ASTRO VG-873 - And 0.125-Dot Scrolling Actions (Option)

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7.6 0.25- and 0.125-dot scrolling actions (option)
0.25-dot and 0.125-dot scrolling can be set.
This function is optional. (The 0.25 dot and 0.125 dot are separate options.)
For further details, contact your dealer or an ASTRODESIGN sales representative.
 Concerning 0.25- and 0.125-dot scrolling
The setting increments used by the regular scrolling function are interval 1 V increments (frames for progressive
scanning and fields for interlaced scanning), and 1-dot increments are used for the movement amounts.
In the case of the VG-870B,871B,873,874 smoother scrolling can be achieved by providing four patterns with a
0.25-dot shift in between (or two patterns with a 0.5-dot shift and 8 patterns with a 0.125-dot shift).
<Example>
When scrolling horizontally for one round at a 1920 × 1080p @ 60p timing of approximately 5 seconds
About 13 dots are required per 2 V and about 6.5 dots (*1) per 1 V.
*1: Amount of movement per 1 V = 1920/ (60*5) = 6.4 ≈ 6.5 [dot]
6dot移動
1フレーム後
13dot移動
移動無し
6.5dot移動
6.5dot移動
・
・
・
・
・
・
・
・
・
1フレーム毎に
6,7,6,7,・・・・・dotの移動量
0.5ドットスクロール
Pattern A
Pattern A
Pattern A
Pattern A
Pattern A
Pattern A
Pattern A
Pattern B
Pattern A
スムーズなスクロールが
可能
滑らかに移動しない
標準設定① 標準設定②
2フレーム毎に13dotの移動 1フレーム毎に6.5dotの移動
7dot移動
2フレーム後
Pattern A ：基準となるパターン
Pattern B ：Pattern Aを0.5dot移動させたパターン
1フレーム後
2フレーム後
1フレーム後
2フレーム後
Standard setting (1)
Standard setting (2) 0.5-dot scrolling
Amount of movement in 6, 7, 6, 7
….. dots per frame
Movement by 13 dots per 2
frames
Movement by 6.5 dots per frame
Movement by 7 dots
A
fter 2 frames
Movement by 13 dots
A
fter 2 frames
A
fter 2 frames
Movement by 6.5 dots
Movement is not smooth.
Smooth scrolling is enabled.
Pattern A: Pattern serving as the reference
Pattern B: Pattern produced when pattern A is moved by 0.5 dot.
Movement by 6 dots
No movement
A
fter 1 frame
A
fter 1 frame
Movement by 6.5 dots
A
fter 1 frame