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Details, datasheet, quote on part number:OV8610
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Omni
General Description
ision
TM
Advanced Information Preliminar y Datasheet
OV8610 Color CMOS SVGA (800 x 600) CAMERACHIPTM Applications
· · · · · Cellular phones Digital still cameras PC Multimedia PDAs Machine vision
The OV8610 CMOS image sensor is a single-chip video/imaging camera device designed to provide a high level of functionality in a single, small-footprint package. The device incorporates an 800 x 600 image array capable of operating at up to 15 frames per second (fps) in full resolution. Proprietary sensor technology utilizes advanced algorithms to cancel Fixed Pattern Noise (FPN), eliminate smearing, and drastically reduce blooming. All required camera functions including exposure control, gamma, gain, white balance, color matrix, color saturation, hue control, windowing, and more, are programmable through the serial SCCB interface. The device can be programmed to provide image output in different 8-bit or 16-bit digital formats.
Key Specifications
SVGA QSVG A Power Supply Po wer Active Requirements Standby Electronics Exposure Output Format Lens Size SVGA Max. Image Transfer Rate QSVG A Min. Illumination (3000K) S/N Ratio Dynamic Range Scan Mode Gamma Correction Pixel Size Dark Current Fixed Pattern Noise Image Area Package Dimensions Array Size 800 x 600 400 x 300 3.0 - 3.6 VDC 48 dB (AGC off,Gamma=1) > 72 dB Progressive or Interlaced On/Off 0.45/1.0 6.2 µm x 6.2 µm < 0.2 nA/cm2 < 0.03% of VPEAK-TO-PEAK 4.96 mm x 3.72 mm .560 in. x .560 in.
Features
· · 480,000 pixels, 1/3" lens, SVGA/QSVGA format Data output formats include: · · · · · · · ITU-601 ITU-656 Choice of progressive scan/interlaced read Wide dynamic range, anti-blooming, zero smearing Electronic exposure/gain/white balance control Image quality controls - brightness, contrast, gamma, saturation, sharpness, windowing, hue, etc. Internal and external synchronization Line exposure option 3.3-Volt operation, low power dissipation · · < 30 mA active power at 30 fps with 10 mA load < 10 µA in power-down mode Built in Gamma correction (0.45/1.00) SCCB programmable: Color saturation, brightness, hue, white balance, exposure time, gain, etc.
Figure 1 OV8610 Pin Diagram
UV 5 /M I R UV 0 / G AM M A UV 1 / CC 65 6 UV 2 / QS VG A UV 3 / EC LK 0 UV 4 / SL AE N UV 7 /B8 19 18 17 16 15 14 HREF/ VFLIP FODD/ SRAM VSYNC/ CSYS ADGND ADVDD VTO SCCBB VcCHG HVDD PWDN AVDD AGND 13 12 11 10 9 8 7 43 D EG ND 44 D EV DD 45 SI O_ 1 46 S IO_ 0 47 RS VD 48 SG N D 1 SV DD 2 RE SE T 3 AGC EN 4 FR EX 5 VR EQ 6 AS UB XC LK 2 XC LK 1 DG N D DV DD UV 6 / TV E N 20
30 DOGND DOVDD PCLK/ PWDB Y7 Y6 Y5/ SHARP Y4 31 32 33 34 35 36 37 38 39 40 41 42
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Ordering Information
Product OV8610 (Color, SVGA, QSVGA, QQSVGA) Package CLCC-48
OV8610
Y3/RGB Y2/G2X Y1/PROG Y0/CBAR CHSYNC/ BW
Version 2.3, April 8, 2003
Proprietary to OmniVision Technologies
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OV8610
Color CMOS SVGA (800 x 600) CAMERACHIPTM
Omni
ision
Functional Description
Figure 2 shows the functional block diagram of the OV8610 image sensor. The OV8610 includes: · Image Sensor Array (824 x 615 resolution) · Analog Signal Processor · Dual 10-Bit Analog-to-Digital Converters · Digital Data Formatter · Video Port · SCCB Interface
Figure 2 Functional Block Diagram
VTO
R G B
MUX
A/D Digital Data Formatter Video Port
Y[7:0]
Analog Signal Processor
Y Cb Cr
MUX
A/D
UV[7:0]
Column Sense Amp Ro w Select Exposure/Gain Detect Image Array (824 x 615) White Balance Detect
Control Registers
. . . .
Clock
Video Timing Generator Exposure/Gain Control White Balance Control SCCB Interface
XCLK1
XCLK2
HREF/ PCLK/ VSFRAM PWDB
VSYNC
FODD CHSYNC
MIR PROG AGCEN SIO_1 SIO_0 SCCBB
Image Sensor Array
The OV8610 sensor is a 1/3" CMOS imaging device. The sensor contains a total of 506,760 pixels (824 x 615). Its design is based on a field integration readout system with line-by-line transfer and an electronic rolling shutter with a synchronous pixel readout scheme. The color filter of the sensor consists of primary red, green, and blue filters arranged in the line-alternating Bayer pattern, RGRG/GBGB.
correction, automatic gain control (AGC), gamma correction, color balance, black level calibration, aperture correction, controls for picture luminance and chrominance, and hue control for color. The analog video signals are based on the following formula: Y = 0.59G + 0.31R + 0.11B U=R-Y V=B-Y where R, G, B are the equivalent color components in each pixel. YCbCr format is also supported, based on the following: Y = 0.59G + 0.31R + 0.11B Cr = 0.713 (R - Y) Cb = 0.564 (B - Y)
Analog Signal Processor
The image is captured by the 824 x 615 pixel image array and routed to the analog processing section where the majority of signal processing occurs. This block contains the circuitry that performs color separation, color 2 Proprietary to OmniVision Technologies
Version 2.3, April 8, 2003
Omni
ision
Functional Description
Dual 10-Bit Analog-to-Digital Converters
The YCbCr or RGB data signal from the analog processing section is fed to two on-chip 10-bit analog-to-digital (A/D) converters: one for the Y/G channel and one shared by the CbCr/BR channels. The on-chip 10-bit A/D operates at up to 20 MHz, and is fully synchronous to the pixel rate. Actual conversion rate is related to the frame rate. A/D black-level calibration circuitry ensures: · Black level of Y/RGB is normalized to a value of 16 · Peak white level is limited to 240 · CbCr black level is 128 · CbCr Peak/bottom is 240/16 · RGB raw data output range is 16/240 NOTE: Values 0 and 255 are reserved for sync flag
Windowing
The windowing feature of the OV8610 image sensor allows user-definable window sizing as required by the application (see Figure 3). Window size setting (in pixels) ranges from 2 x 2 to 800 x 600, and can be positioned anywhere inside the 824 x 615 boundary. Note that modifying window size and/or position does not change frame or data rate. The OV8610 image sensor alters the assertion of the HREF signal to be consistent with the programmed horizontal and vertical region. The default output window is 800 x 600.
Figure 3 Windowing
Column Start HREF
R Column o w
Column End
Digital Data Formatter
The converted data stream is further conditioned in the digital formatter. The processed signal is delivered to the digital video port through the video multiplexer which routes the user-selected 8-, or 10-bit video data to the correct output pins.
Row Start HRE F
Display Window
Row End Sensor Array Boundary
Image Processing
The algorithm used for the electronic exposure control is based on the brightness of the full image. The exposure is optimized for a "normal" scene that assumes the subject is well lit relative to the background. In situations where the image is not well lit, the automatic exposure control (AEC) white/black ratio may be adjusted to suit the needs of the application.
Zoom Video (ZV)
The OV8610 image sensor includes a Zoom Video (ZV) function that supports standard ZV port interface timing. Signals available include VSYNC, CHSYNC, PCLK and 16-bit data bus: Y[7:0] and UV[7:0]. The rising edge of PCLK clocks data into the ZV port (see Figure 6).
Additional on-chip functions include:
· · AGC that provides a gain boost of up to 24 dB White balance control that enables setting of proper color temperature and can be programmed for automatic or manual operation. Separate saturation, brightness, hue, and sharpness adjustments allow for further fine-tuning of the picture quality and characteristics.
QSVGA-Skip
A QSVGA mode is available for applications where higher resolution image capture is not required. Only half of the pixel rate is required when programmed in same frame rate with sub-sampling method. If retaining the same pixel rate with the skip method, the maximum frame rate is 120. Default resolution is 400 x 300 pixels and can be programmed for other resolutions. Refer to Table 6 and Table 7 for further information.
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The OV8610 image sensor also provides control over the White Balance ratio for increasing/decreasing the image field Red/Blue component ratio. The sensor provides a default setting that may be sufficient for many applications.
Version 2.3, April 8, 2003
Proprietary to OmniVision Technologies
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