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STV2050A Fiches technique(PDF) 38 Page - STMicroelectronics

No de pièce STV2050A
Description  AUTOMATIC MULTISCAN DIGITAL CONVERGENCE PROCESSOR
PDF  83 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV2050A Fiches technique(HTML) 38 Page - STMicroelectronics

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STV2050A - VIDEO PATTERN GENERATOR
Figure 20. Vertical Border Lines
Note: The value of the BPV bit must be smaller than that of the VGD bit.
7.5 GAIN ADJUSTMENT LINES
The “Gain Adjustment Lines” pattern is used mainly for 2 purposes:
– To calibrate the convergence currents in order to achieve a consistent geometrical correction
on the screens of a series of PTVs,
– To have an easy visual adjustment of the interlace mode.
The cursor has two different shapes, one for the adjustment of the vertical gain and another for
the adjustment of the horizontal gain.
The video pattern for the gain cursor is defined in the EA register.
7.5.1 Video Pattern for Horizontal Gain Cursor
The horizontal gain cursor can be used for adjusting the horizontal convergence channels.
The video pattern in the odd field is identical to the video pattern of the large cursor displayed
at the centre of the visible grid.
GCP
0: Gain cursor video pattern off
1: Gain cursor video pattern on
VHV
0: Horizontal gain cursor video pattern
1: Vertical gain cursor video pattern
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0
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V-Gridlines
Border Lines
BPV
BPV



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