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參數(shù)資料
| 型號： | 935261128551 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | PLASTIC, SOT-407, QFP-100 |
| 文件頁數(shù)： | 5/47頁 |
| 文件大小： | 192K |
| 代理商： | 935261128551 |
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1999 Sep 27
13
Philips Semiconductors
Preliminary specication
Digital PC-camera signal processor
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
FCE317
U
Y
V
sync, blank, scaling, levels
Y
VDOBCVBS
C
PAL/NTSC
ENCODER
MIX
VDAC
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.
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