Sima VS-712 EX, Руководство пользователя

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Composite to S-Video to Component Conversion
The VS-712EX has special circuitry to convert the composite video inputs to the S-Video outputs and the
composite/s-video signals to component video. The VS-712EX sends the original composite and the
generated s-video signal to both sets of outputs and it takes the s-video signal and generates a component
video signal. However, if you feed the selected input with a s-video signal, the VS-712EX only sends the s-
video signal to the output.
Note: Because the up-converted video signal is generated from a lower quality signal, the quality of the converted
signal will not be as good as a true component or S-Video signal. For best picture quality use the original
component, S-Video or composite video signals. In addition, on rare occasions certain manufacture’s TVs are
incompatible with the upgraded video signal, and may result in color loss or other video anomalies.
Whenever a new input channel is selected for viewing, the VS-712EX checks to see which video signals are
present (i.e. Composite, S-Video and component). It does this by switching all the video input switches to
the selected input channel and checking for horizontal sync signals on the Composite, S-Video Y and
component Y inputs. Video up conversion for the view outputs is then configured in accordance with the
signals detected. The view video up conversion configuration is summarized in the following table:
Input Signals Present Video Signal Derivation for View Video Outputs
Composite S-Video YUV* Composite S-Video Component (YUV)
x
From source Generated from CVBS Generated from CVBS
x No Output Present From Source Generated from S-Video
x x From source From source Generated from S-Video
x No Output Present No Output Present From source
x x
From source Generated from CVBS From source
x x No Output Present From source From source
x x x From source From source From source
* Inputs 1, 2 and 3 only
Examples of Video Conversion
Video Input Output
Composite
S-Video No Signal
YUV No Signal
Video Input Output
Composite
S-Video
YUV
No
Signal
Video Input Output
Composite
No
Signal
No
Signal
S-Video
YUV
No
Signal
Video Input Output
Composite No
Signal
No
Signal
S-Video
No
Signal
No
Signal
YUV
Video Input Output
Composite
S-Video
No
Signal
YUV
Video Input Output
Composite
S-Video
YUV