STEP 5:
SMPTE Proposed Recommended Practice RP 175 (Digital
Interface for 4:4:4:4 Component Video Signals [Dual Link])
specifies de-multiplexing wide band digital 4:4:4 or 4:4:4:4
video signals into 4:2:2:0 and 0:2:2:4 pairs. This is for
interconnecting to other devices using standard 4:2:2
connections, either serial or parallel digital. The 8150 requires
that if the 4:4:4 signal is digital, it must be of the format
YCbCr; it accepts YCbCrK, but does not process the Key part
of the signal. (It cannot process digital GBR signals at the 4:4:4
sampling rate. However, if the Component Video + Key
Input module is installed, it accepts either wide band RGB
(GBR) or Y/R-Y/B-Y analog video.)
You can connect either part of the digital pair to any digital
input on the 8150. Be sure to note which input is the 4:2:2 (link
A, or luminance and co-sited color difference samples) part
and which is the 0:2:2 (link B, or non-co-sited color difference
samples) part. Since the 8150 does not process a key signal as
a part of the 4:4:4 signal, the terms "4:2:2" and "0:2:2" appear
below to indicate that key samples, if present, are not used.
STEP 6:
You can select sources for the 4:4:4 Chroma Keyers in the
Keyer menu Sources submenu. When the
Key Type
is
Chroma 444
, two pushknobs labeled
Key 444 Cut Source #1
and
Key 444 Cut Source #2
appear. Select the input you
connected the 4:2:2 (link A) part of the 4:4:4 signal to with the
Key 444 Cut Source #1
pushknob. Then select the input you
connected the 0:2:2 (link B) part to with the
Key 444 Cut
Source #2
pushknob.
NOTE: Since the high resolution chrominance portion of
the 4:4:4 signal was sampled at twice the rate as a 4:2:2
signal, using only the 4:2:2 (link A) part of a 4:4:4 signal as
a source may result in aliasing of the half-sample-rate color
difference signals. The fill processor properly filters the
4:4:4 signal to 4:2:2 only when the
Key Type
is set to
Chroma
444
and the
Color Corrector Mode
is set to
RGB 444
. Since
the Background A, Background B, Program, and Preset bus
Color Correctors cannot accept 4:4:4 signals, you should
use these signals only as chroma key fill sources in the
8150.
For more information on the 4:4:4 Chroma Keyers, see Section
4 – Keying in the 8150 Operations Manual.
8150 Technical Guide
Option Installation
9100-0212-04 - May 2000
Option Installation
3-15
Summary of Contents for ASWR8150
Page 12: ...Table of Contents 8150 Technical Guide X Contents 9100 0212 04 May 2000...
Page 39: ......
Page 80: ...Control Panel Connector Detail 8150 Technical Guide 2 40 Installation 9100 0212 04 May 2000...
Page 109: ...Option Installation 8150 Technical Guide 3 30 Option Installation 9100 0212 04 May 2000...
Page 236: ...8150 Partial Parts List 8150 Technical Guide A 6 Appendix 9100 0212 04 May 2000...
