參數(shù)資料
型號(hào): ICM320TCA
廠商: Electronic Theatre Controls, Inc.
英文描述: 3.2 Megapixel QXGA Digital Color CMOS Image Sensor
中文描述: 320萬(wàn)像素QXGA的數(shù)字彩色CMOS圖像傳感器
文件頁(yè)數(shù): 9/30頁(yè)
文件大小: 1410K
代理商: ICM320TCA
IC M320T
3.2 Megapixel QXGA Digital Color CMOS VGA Image Sensor
Preliminary Data Sheet V1.0
Functional Description
The ICM320T is a single-chip digital color-
imaging device. It includes a 2048x1536 pixel
sensor array, 2122 column-level ADCs, and
correlated double sampling (CDS) circuitry.
Writing into the SIF interface, which can address
the register file consisting of 8-bit registers, sets
all the programmable parameters. The output
format is 10-bit raw Bayer RGB data, together
with horizontal and vertical synchronization
signals.
C opyright 2005, IC Media C orporation
http://www.ic-media.com/
3/14/2005
Page
9
Image Sensor Array
The image array consists of 2122x1556 pixels.
Each pixel has a light-sensitive photo diode and
a set of control and transfer transistors. At the
beginning of the pixel exposure 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 CDS
process subtracts the reset value (sampled right
after sampling the current signal) from the signal
value.
The sensor output is approximately proportional
to the amount of received light, ranging from 0
to 1024. There are several dummy rows and
columns surrounding the array; 64 on the left
side and 10 on the top, right and bottom sides.
The outer 60 of the 64 dummy pixels on the left
side and outer 6 of the 10 dummy pixels on the
top, right and bottom sides are covered with dark
filters. The remaining dummy pixels are active
pixels covered by Red, Green, and Blue color
filters in a Bayer pattern. These pixels can be
used for color interpolation.
The 2048x1536 (QXGA) size active signal pixel
array, pixel (64, 10) through pixel (2111, 1545), is
also covered by an array of Red, Green, and Blue
color filters in a Bayer pattern. See Figure 5 for a
detailed layout of the sensor array.
Figure 5. Image Sensor Array
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