VPC3230D 데이터 시트보기 (PDF) - Micronas

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VPC3230D

Comb Filter Video Processor

Micronas 

PRELIMINARY DATA SHEET

VPC 323xD

1.3. VPC Applications

Fig. 1–2 depicts several VPC applications. Since the

VPC functions as a video front-end, it must be comple-

mented with additional functionality to form a complete

TV set.

The DDP 331x contains the video back-end with video

postprocessing (contrast, peaking, CTI,...), H/V-deflec-

tion, RGB insertion (SCART, Text, PIP,...) and tube

control (cutoff, white-drive, beam current limiter). It

generates a beam scan velocity modulation output

from the digital YCrCb and RGB signals. Note, that this

signal is not generated from the external analog RGB

inputs.

The component interface of the VPC 323xD provides a

high-quality analog RGB interface with character inser-

tion capability. It also allows appropriate processing of

external sources, such as MPEG-2 set-top boxes in

transparent (4:2:2) quality. Furthermore, it transforms

RGB/Fast Blank signals to the common digital video

bus and makes those signals available for 100-Hz up-

conversion or double-scan processing. In some

European countries (Italy), this feature is mandatory.

SRC (e. g. SDA 94xx from Micronas) indicates mem-

ory based image processing, such as scan rate con-

version, vertical processing (Zoom), or PAL+ recon-

struction. The VPC supports memory-based

applications through line-locked clocks, syncs, and

data. Additionally, the VPC 323xD provides a 656-out-

put interface and FIFO control signals.

Examples:

– Europe: 15 kHz/50 Hz → 32 kHz/100 Hz interlaced

– US: 15 kHz/60 Hz → 32 kHz/60 Hz non-interlaced

a) YCrCb/RGBFB

CVBS

VPC

323xD

FIFO

YCrCb/RGBFB

CVBS

RGB

b)

YCrCb

CVBS

VPC

323xD

DDP

331x

VPC

323xD

SRC

DDP

331x

c) YCrCb/RGBFB

CVBS

VPC

323xD

SRC

DDP

331x

Fig. 1–2: VPC 32xxD applications

a) 15-kHz application Europe

b) double-scan application (US, Japan) with YCrCb inputs

c) 100-Hz application (Europe) with RGBFB inputs

RGB

H/V

Defl.

RGB

H/V

Defl.

RGB

H/V

Defl.

Micronas

7

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