STV2050A datasheet(38/83 Pages) STMICROELECTRONICS

tên linh kiện	STV2050A

Giải thích chi tiết về linh kiện	AUTOMATIC MULTISCAN DIGITAL CONVERGENCE PROCESSOR

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nhà sản xuất	STMICROELECTRONICS [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

V-Gridlines

Border Lines

BPV

STV2050A bảng dữ liệu(PDF) 38 Page - STMicroelectronics