ICM-515NBSA ETC1 [List of Unclassifed Manufacturers], ICM-515NBSA Datasheet - Page 5

• Manufacturer Part Number: ICM-515NBSA
• Description: Color CMOS Image Sensor With 574x483 Pixel NTSC Composite Video Output
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

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,
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.
©2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
Interface
Timing
Control
SIF
Column-Level
Sensor Array
Correlated
Figure 1. Block diagram
Sampling
574x483
Control
Module
Double
Sensor
ADC
ICM515NB 574x483 Pixel CMOS NTSC Sensor
page 5
which includes
Interpolation
Data Sheet V1.0 November 2002
Conversion
Correction
AE & AWB
Processing;
Encoder
Gamma
NTSC
Format
Color
Color
Company Confidential
horizontal and vertical sync signals.
1/17/2003