OV6620 Datasheet, PDF (4/31 Pages) List of Unclassifed Manufacturers – SINGLE-CHIP CMOS CIF COLOR DIGITAL CAMERA

OMNIVISION TECHNOLOGIES, Inc.
Advanced Information
Preliminary
OV6620/OV6120
SINGLE IC CMOS COLOR AND B/W DIGITAL CAMERAS
1. Functional Description
(Note: References to color features do not apply to the OV6120 B&W Digital Image Sensor.)
1.1 Overview
Referring to Figure 1, OV6620/OV6120 CMOS Image
Sensor Block Diagram below, the OV6620 sensor in-
cludes a 356 x 292 resolution image array, an analog
signal processor, dual 8-bit Analog-to-Digital convert-
ers, analog video multiplexer, digital data formatter and
video port, I²C interface and registers, digital controls in-
cluding timing block, exposure, and black and white
balance.
The OV6620/OV6120 sensor is a 1/4-inch CMOS imag-
ing device. The sensor contains approximately 101,376
pixels. Its design is based on a field integration read-out
system with line-by-line transfer and an electronic shut-
ter with a synchronous pixel read out scheme. The color
filter of the sensor consists of a primary color RG/GB ar-
ray arranged in line-alternating fashion.
GAMMA
r
g
b
analog processing
VTO
Y
Cb
Cr
mx ADC
mx _ADC
DENB
Y(7:0)
UV(7:0)
column sense amp
exposure
detect
white
balance
detect
(356x292)
image
array
sys-clk ^{video timing generator}
exposure control
WB
control
1/2
XVCLK1
PCLK FODD CHSYNC MIR
HREF VSYNC FREZ
FSIN
AGCEN
PROG
FZEX
AWB _AWBTH/
AWBTM
registers
I²C
interface
SCL SDA IICB
Figure 1. OV6620/OV6120 CMOS Image Sensor Block Diagram
4
Version 1.11
14 May 1999