OmniTek Ultra 4K Tool Box, Руководство пользователя

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Ultra v2.0a User Guide
I-1
I : Pixel Data
This section describes the different ways an Omnitek
Ultra
offers for examining the data on the
input signal(s) providing the video that is being analysed.
The displays offered are:
(i) Data View (Section I.2)
Displays the values for a selected set of pixels delivered over the different ‘Inputs’ that
contribute to the final image. (These ‘Inputs’ don’t correspond to cables but instead to
what SMPTE describe as ‘Virtual Interfaces’. While several SDI cables may be needed
to deliver one image, each of those cables may be delivering more than one Input.)
Where the video being analysed is delivered as a single stream, the screen will just
show the pixel data for that Input. For video such as HD (1.5Gb/s) Dual-link and
‘Square Division’ 4K UHD, however, the image is delivered over two or more Inputs:
in these cases, the Data Viewer displays a separate set of pixel data for each Input.
(ii) Cable View (Section I.3)
Where video is delivered over multiple Inputs, these Inputs are generally delivered over
more than one cable with each cable delivering one or more Input. Where two or more
Inputs are delivered on a single cable, these are delivered interleaved.
The Cable View displays the data delivered by each cable. Colouring is used to identify
data from the different Inputs and show how this has been interleaved.
(iii) Ancillary Data Viewer (Section I.4)
Displays a decode of any ANC packets detected at the current cursor position.
In each case, the focus for the display is linked to the current X,Y positions indicated by the
Active Picture and SMPTE Sample cursor roses shown on the Viewer window towards the
bottom of the right-hand panel. It is also linked to the position of the crosshair cursor that is
optionally displayed on the Picture View (see Section K.3) and to the pixel/pixels highlighted on
the Zoom View (see Section J.5).
The focus of the display can be moved using the cursor roses as described in Section H.3. It can
also be moved by clicking both within the Data View and Cable View displays described in this
section and within the Picture View and Zoom View displays described in Section K. It should
be noted, however, that while movements made on the Picture View and the Zoom View are
restricted to the Active part of each frame, those on the Data View and Cable View can be used
to explore the blanking.
The different displays are described below. First, however, a brief look at the different ways in
which the focus for these displays can be moved on a pixel-by-pixel level.
Note: Interpreting the data shown in these displays is not straightforward when it is associated
with video formats such as ‘Square Division’ or ‘2-Sample Interleave’ 4K UHD as these draw
their data from more than one input. When working with such standards, you are strongly
recommended to have a copy of the relevant SMPTE standard to hand to refer to.