pnx1700 NXP Semiconductors, pnx1700 Datasheet - Page 596
pnx1700
Manufacturer Part Number
pnx1700
Description
Connected Media Processor
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1700.pdf
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Philips Semiconductors
Volume 1 of 1
PNX17XX_SER_1
Preliminary data sheet
Figure 6:
Measurement in the MBS
Noise
Estimator
2.4.11 Measurement Functions
All measurements in the MBS are based on analyzing a video stream, within a
programmable window, using specific algorithms. The measurement results are
stored in registers once per field/frame. A special interrupt is generated to indicate
that the measurement is done. Based on the measurement results, software sets the
control parameters for the picture processing units.
As shown in
•
•
•
•
•
Measurement Block Interface
Converts the inputs format (Y, U/V 8bits) into the format needed by the
measurement units (Y, U/V 9bits).
Histogram Measurement
Analyses the Y component of the input data stream. Used for dynamic contrast
improvement (i.e., histogram modification in QVCP).
Noise Estimator
Analyses the Y component. Controls the setting of LSHR pool ressource in
QVCP.
Black Bar Detector
Analyses the Y component. Results are used to expand the picture to the display
size in case of black bars at the top and/or bottom of the picture.
Black Level Measurement
Analyses the Y component. Used for black stretch.
Measurement
Histogram
Figure
Rev. 1 — 17 March 2006
6, the MBS measurement block comprises:
Registers
Black Bar
Detector
Black Level
Measurement
Chapter 19: Memory Based Scaler
Measurement
Interface
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX17xx Series
Bandwidth
Measurement
UV
8/8
19-13
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