Daewoo DTJ-28A6F, Service Manual, Page: 26 / 54

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5-5. DDP 3310B (Display and Deflection Processor)
IC description
(1) Description
The DDP 3310B is a single-chip digital Display and Deflec-
tion Processor designed for high-quality backend applica-
tions in 100/120MHz TV sets with 4:3- or 16:9 picture
tubes. The IC can be combined with members of the
DIGIT 3000 IC family (VPC 32xx, TPU 3040), or it can be
used with third-party products. The IC contains the entire
digital video component and deflection processing and all
analog interface components.
(2) Feature
Video processing
- linear horizontal scaling (0.25 ... 4)
- non-linear horizontal scaling “panoramavision”
- dynamic peaking
- soft limiter (gamma correction)
- color transient improvement
- programmable RGB matrix
- picture frame generator
- two analog RGB/Fast-Blank inputs
Deflection processing
- scan velocity modulation output
- high-performance H/V deflection
- EHT compensation for vertical / East/West
- soft start/stop of H-Drive
- vertical angle and bow
- differential vertical output
- horizontal and vertical protection circuit
- adjustable horizontal frequency for VGA/SVGA dislay
Miscellaneous
- selectable 4:1:1/4:2:2 YC C input
- selectable 27/32-MHz line-locked clock input
- crystal oscillator for horizontal protection
- automatic picture tube adjustment(cutoff, whitedrive)
- single 5-V power supply
- hardware for simple 50/60-Hz to 100/120-Hz conversion
(display frequency doubling)
- two -controlled PWM outputs
- beam current limiter
r b
I C
2
(3) Block Diagram