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SAF7118H

Multistandard video decoder with adaptive comb filter and component video input

Philips Electronics 

Philips Semiconductors

Multistandard video decoder with adaptive

comb filter and component video input

Product specification

SAF7118

1 FEATURES

1.1 Video acquisition/clock

• Up to sixteen analog CVBS, split as desired (all of the

CVBS inputs optionally can be used to convert e.g.

Vestigial Side Band (VSB) signals)

• Up to eight analog Y + C inputs, split as desired

• Up to four analog component inputs, with embedded or

separate sync, split as desired

• Four on-chip anti-aliasing filters in front of the

Analog-to-Digital Converters (ADCs)

• Automatic Clamp Control (ACC) for CVBS, Y and C

(or VSB) and component signals

• Switchable white peak control

• Four 9-bit low noise CMOS ADCs running at twice the

oversampling rate (27 MHz)

• Fully programmable static gain or Automatic Gain

Control (AGC), matching to the particular signal

properties

• On-chip line-locked clock generation in accordance with

“ITU 601”

• Requires only one crystal (32.11 or 24.576 MHz) for all

standards

• Horizontal and vertical sync detection.

1.2 Video decoder

• Digital PLL for synchronization and clock generation

from all standards and non-standard video sources e.g.

consumer grade VTR

• Automatic detection of any supported colour standard

• Luminance and chrominance signal processing for

PAL B, G, D, H, I and N, combination PAL N, PAL M,

NTSC M, NTSC-Japan, NTSC 4.43 and SECAM

• Adaptive 2/4-line comb filter for two dimensional

chrominance/luminance separation, also with VTR

signals

– Increased luminance and chrominance bandwidth for

all PAL and NTSC standards

– Reduced cross colour and cross luminance artefacts

• PAL delay line for correcting PAL phase errors

• Brightness Contrast Saturation (BCS) adjustment,

separately for composite and baseband signals

• User programmable sharpness control

• Detection of copy-protected signals according to the

Macrovision(1) standard, indicating level of protection

• Independent gain and offset adjustment for raw data

path.

1.3 Component video processing

• RGB component inputs

• Y-PB-PR component inputs

• Fast blanking between CVBS and synchronous

component inputs

• Digital RGB to Y-CB-CR matrix.

1.4 Video scaler

• Horizontal and vertical downscaling and upscaling to

randomly sized windows

• Horizontal and vertical scaling range: variable zoom to

1⁄64 (icon) (it should be noted that the H and V zoom are

restricted by the transfer data rates)

• Anti-alias and accumulating filter for horizontal scaling

• Vertical scaling with linear phase interpolation and

accumulating filter for anti-aliasing (6-bit phase

accuracy)

• Horizontal phase correct up and downscaling for

improved signal quality of scaled data, especially for

compression and video phone applications, with 6-bit

phase accuracy (1.2 ns step width)

• Two independent programming sets for scaler part, to

define two ‘ranges’ per field or sequences over frames

• Fieldwise switching between decoder part and

expansion port (X port) input

• Brightness, contrast and saturation controls for scaled

outputs.

1.5 Vertical Blanking Interval (VBI) data decoder

and slicer

• Versatile VBI data decoder, slicer, clock regeneration

and byte synchronization e.g. for World Standard

Teletext (WST), North American Broadcast Text System

(NABTS), closed caption, Wide Screen Signalling

(WSS), etc.

(1) Macrovision is a registered trademark of the Macrovision

Corporation.

2004 Jul 22

3

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