SAA8113HL View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

SAA8113HL

Digital PC-camera signal processor

Philips Electronics 

Philips Semiconductors

Digital PC-camera signal processor

Preliminary specification

SAA8113HL

8.8 Analog output processing

The analog output processing (see Fig.6) contains a

PAL/NTSC encoder to transform the YUV data path to the

CVBS output. The YUV input signals are up-sampled to

twice the pixel clock and digitally prefiltered to keep the

external analog filter simple. The block also contains an

adjustable luminance clipper.

handbook, full pagewidth

Y

Y

U

PAL / NTSC

ENCODER

MIX

C

V

VDAC

sync, blank, scaling, levels

FCE317

VDOBCVBS

Fig.6 Analog output processing.

8.9 Measurement engine

The measurement engine performs data measurements

on a field basis to get inputs for the AE and AWB control

loops of the microcontroller. Up to 16 programmable

windows can be used for the measurement. There are two

down-samplers to prepare the data for two separate

accumulators. It is possible to proceed with eight different

measurements per field (odd and even fields separately).

An internal RAM workspace is used for data handling

operation.

8.10 VH reference and window timing and control

This block generates internal control signals for different

purposes:

• Vertical, horizontal and field references (VD, HD and FI)

for PAL or NTSC sensors

• Specification of the active window and the optical black

window

• Specification of the measurement window grid with

respect to the active window

• Specification of the vertical position of the display bars,

see Section 8.7.

All these specifications can be controlled through the serial

interface.

1999 Sep 27

13

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