AJA HDP2, Руководство по установке и эксплуатации, Страница: 8 / 31

HDP2 Mini-Converter v1.4r1 www.aja.com 8
Video Scaling
As shown in the graphic below, the HDP2 will scale the input video to the best fit for a
given monitor and video input. In cases where the input video and the monitor are
already the same or similar, the HDP2 automatically turns off scaling. For example, a 1920
x1080 video and a 1920 x1200 monitor will not be scaled.
NOTE: The HDP2 also properly supports 16:10 and 5:4 monitors.
If the HDP2 scaling is set to 1:1 via the control panel, the input raster will be displayed
unscaled. This means that input rasters smaller than the monitor appear as a “floating”
image surrounded by black. For example, a 1280 x 720 image on a 1920 x 1200 monitor
only fills about 40% of the screen. Standard definition inputs unscaled on a 1920 x 1200
monitor only fill about 20% of the screen. This mode will only work when the input raster
is smaller than the monitor resolution.
If the HDP2 scaling is set to “Auto”, the HDP2 will scale the image to best fit the screen
while preserving the aspect ratio. In some cases, a letterboxed or pillarboxed image can
be expected.
Vertical Locking
Depending on the input frame rate and the capabilities of the monitor in use, the HDP2
will provide a vertically locked signal to the monitor. Because most DVI monitors have
their own internal scaling, the internal scaler of the monitor may or may not lock
vertically to the HDP2 output. The recommended monitor list shown earlier lists only
monitors which have been tested for proper vertical lock. The HDP2 works with many
LED/LCD/DLP/Plasma monitors not shown on the recommended monitor list—however,
these monitors may have one of two types of issues associated with not being vertically
locked:
Frame add/drop: The monitor occasionally adds or drops a frame of video which appears as discontinuous
motion. For example, a moving object may appear to briefly pause or jump ahead.
Motion tearing: The monitor displays video from 2 different fields or frames on screen. This appears as a
horizontal discontinuity in the video during motion. For example, a moving object may
appear to be split horizontally with the upper part ahead or behind the lower part.
16 x 9 Monitor
16 x 9 Video
4 x 3 Video
16 x 9 Monitor
4 x 3 Monitor
4 x 3 Monitor
16:9 Monit
Full Screen
Full Screen “Widezoom/Cr
“Letterbox”
4:3 Monito
“Widezoom/C
“Pillarbox”