STV2050A STMicroelectronics, STV2050A Datasheet - Page 32

• Manufacturer Part Number: STV2050A
• Description: IC DGTL CONVERGENCE PROC 80-PQFP
• Manufacturer: STMicroelectronics
• Type: Videor

Specifications of STV2050A

• Applications: HDTV
• Mounting Type: Surface Mount
• Package / Case: 80-MQFP, 80-PQFP
• Case: QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STV2050A - VIDEO PATTERN GENERATOR
7 VIDEO PATTERN GENERATOR
The STV2050A provides a built-in video pattern generator for convergence adjustments. The
RGB signals are generated by 4-bit DACs with a voltage output. The FBLK signal is used to
switch the RGB source inside the TV set. The FBLK is a fixed-voltage output. The video pat-
tern generator delivers five types of video patterns:
– Cross-Hatch Grid:
– Cursor:
– Border Lines:
– Gain Adjustment Lines:
– Auto-alignment Pattern:
The video generator also produces the control signals for the optional optical loop functions.
The patterns can be modified using several parameters in the registers of the STV2050A.
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Displays the physical locations corresponding to the stored correction values. Refer to
tion 7.2 "CROSS-HATCH GRID" on page
A crosshair is displayed at the place corresponding to the current addressed memory loca-
tion.
Used to adjust the convergence at the horizontal and vertical edges of the visible screen ar-
ea. Refer to
Used to easily adjust the gain of the convergence channels and to optimize interlace mode.
Supports an auto-alignment procedure.
Section 7.4 "BORDER LINES" on page
35.
37.
Sec-