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ICM515NB Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part No. ICM515NB
Description  Color CMOS Image Sensor With 574x483 Pixel NTSC Composite Video Output
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ICM515NB Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

 
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ICM515NB 574x483 Pixel CMOS NTSC Sensor
Data Sheet V1.0 November 2002
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
1/17/2003
page 5
Company Confidential
2. Functional Description
ICM-515NB is a single-chip digital color imaging device. It includes a 574x483 sensor array, 574 column-level
ADC, correlated double sampling circuitry, an automatic exposure control module, a color interpolation module,
programmable white balancing, a color correction module and a programmable gamma correction module. All the
programmable parameters are set by writing into the SIF interface which can address the register file consisting of
8-bit registers. The output format is NTSC composite video, which includes horizontal and vertical sync signals.
Figure 1. Block diagram
2.1 Image Array
The image array consists of 574x483 pixels. Each pixel has a light sensitive photo diode and a set of control and
transfer transistors. At the beginning of the cycle, a row of pixels is pre-charged to its maximum value. Then the
row is exposed to light for several lines worth of time and sampled by the ADC. A “Correlated Double Sampling
(CDS)” process is performed with subtracting the reset value (sampled right before sampling the signal) from the
signal value. The purpose of CDS is to eliminate the point-wise fixed pattern noise (FPN). The output of CDS is
approximately proportional to the amount of received light, ranging from 0 to 512.
SIF
Interface
Timing
Control
Sensor Array
574x483
NTSC
Encoder
Column-Level
ADC
Correlated
Double
Sampling
Sensor
Control
Module
Gamma
Correction
Format
Conversion
Color
Processing;
AE & AWB
Color
Interpolation


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