WIKI de Bertrand VANDEPORTAELE

Exploratory reports provide clients with a high level view of a device. Content varies by device type, but typical information includes analysis based on die images, literature, and similar devices analyzed by Chipworks.

Report / Device Description:

The OV3640 (color) CameraChip(TM) sensor is a low voltage, high performance 1/4-inch 3.2 megapixel CMOS image sensor that provides the full functionality of a single chip QXGA (2048 x 1536) camera using OmniPixel3(TM) technology in a small footprint package. It provides full-frame, sub-sampled, windowed or arbitrarily scaled 8-bit/10-bit images in various formats via the control of the Serial Camera Control Bus (SCCB) interface or MIPI interface.

pleins d'infos sur: http://embedded-system.net/camerachip-sensor-ov3640-omnivision.html OmniVision

CameraChip Sensor - OV3640 - Posted in Camera, Image, Sensor On Monday, June 18, 2007 OmniVision launched the OV3640, a 1/4-inch 3-megapixel CameraChip sensor, based on the new 1.75-micron OmniPixel3 architecture. The OV3640 provides the full functionality of a single chip QXGA (2048×1536) camera in a small footprint package. It provides full-frame, sub-sampled, windowed or arbitrarily scaled 8-bit/10-bit images in various formats via the control of the Serial Camera Control Bus (SCCB) interface or MIPI interface. The OV3640 CameraChip Sensor is an ideal drop-in upgrade for 2-megapixel camera in existing handset designs using the standard 8 x 8 mm sockets.

OmniVision OV3640 CameraChip Sensor

The OV3640 CameraChip Sensor is based on the recently-announced 1.75 micron OmniPixel3 architecture. which is designed to focus light onto the sensor more effectively, allowing the pixels to capture significantly more light and thus make more effective use of the smaller pixel's active area. The resulting improved fill factor and increased sensitivity deliver more vibrant and true-to-life color reproduction. OmniPixel3's optimized pixel symmetry avoids color distortion and offers improved dynamic range of up to 65dB. New process technology optimizations help OmniPixel3 achieve ultra low dark current (30 e/sec) and low defect density, making this technology ideal for use in low light and variable light conditions. Further innovations include a new transfer gate design process and contact technologies that achieve lag-free operation throughout the signal range. Eliminating read-out lag ensures that no ghost images or unwanted noise are present in the imaging process.

Features of OV3640 CameraChip Sensor:

Images sizes: QXGA, and any arbitrary size scaling down from QXGA Image quality controls: color saturation, hue, gamma, sharpness (edge enhancement), lens correction, defective pixel canceling, and noise canceling Programmable controls for frame rate, AEC/AGC 16-zone size/position/weight control, mirror and flip, scaling, cropping, windowing, and panning Output formats: RAW RGB, RGB565/555/444, CCIR656, YUV422/420, YCbCr422 and compression Digital video port (DVP) parallel output interface MIPI serial output interface On-chip phase lock loop (PLL) Automatic image control functions: automatic exposure control (AEC) automatic 50/60 Hz luminance detection automatic white balance (AWB) automatic band filter (ABF) automatic black level calibration (ABLC) Support for: anti-shake assistance auto focus control (AFC) data compression output horizontal and vertical sub-sampling internal and external frame synchronization video or snapshot operations second camera chip-sharing ISP and MIPI interface LED and flash strobe modestandard serial SCCB interface The OV3640 CameraChip Sensor features a high-speed, two-lane mobile industry processor interface (MIPI) to enable the fast transfer of large blocks of data. The new image sensor also incorporates advanced image signal processing and onboard JPEG compression to allow existing baseband processors without MIPI to support a camera upgrade to 3-megapixels at 15 frames per second in full resolution.

The OV3640 CameraChip Sensor also incorporates advanced image stabilization functionality similar to that used in digital still camera (DSC) and camcorder products. In low light situations, cameras need a longer exposure time, which in turn, requires the photographer to keep a steady hand. Camera phones with an OV3640 sensor will automatically sense the slightest camera shake and activate the image stabilization function to help prevent image blur and produce sharper images.

These new features and improvements of OV3640 CameraChip Sensor include a new read-out circuit for significantly reduced noise; improved high resolution image signal processing for better overall camera performance and image quality; a black level follower for stronger image contrast; easy black level calibration to eliminate the need for gain adjust; integrated auto-focus control for 8.5 x 8.5 mm auto focus camera modules and improved scaling to facilitate smooth zoom function.

http://www.e-consystems.com/omap3530.asp

ATTENTION

regarder: http://www.ovt.com/products/detail.php?id=26 apparemment, seul le modèle OV3640-V56A supporte la sortie au format RAW

Doc sur le module omnivision: http://www.tdc.co.uk/datasite/imaging/camera/_data/OV3640_VL9A_PB.pdf

regarder le bloc fonctionnel en dernière page, apparemment c'est du rolling-shutter

papier sur la rectification des images rolling shutter: http://140.117.166.1/eehome/ISCOM2005/SubmitPaper/UploadPapers/ISCON05_00159.pdf

USB ??

module camera usb: http://www.e-consystems.com/2mp_cameraboard_usb.asp

camera Giga ethernet

http://directory.advancedimagingpro.com/product/38949/SVS-VISTEK_GmbH_Compact_13_Megapixel_CMOS_camera

également camera point grey ethernet d'après matthieu:

http://www.ptgrey.com/ http://www.ptgrey.com/products/Point_Grey_imaging_catalog.pdf

En fait, ils ne font pas encore d'ethernet ni d'usb 3…..

STABILISATION D'IMAGES

http://public.hronopik.de/vid.stab/features.php?lang=en

arm7

http://www.arm.com/products/CPUs/families/ARM7Family.html

autres cartes

beagle board

http://www.elinux.org/BeagleBoard

TI OMAP3530 processor on BeagleBoard contains an ARM Cortex-A8 general purpose processor and a TMS320C64x+ DSP. il y a un arm7+ evolué avec plein d'instructions SIMD et un copro flottant

projecteur dlp pour beagle board http://blog.makezine.com/archive/2009/01/tis_beagleboard_and_dlp_pico_projector.html?CMP=OTC-0D6B48984890

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-23836-ND

tous les details sur:

http://beagleboard.org/

BeagleBoard Details The BeagleBoard is an ultra-low cost, high performance, low power OMAP3 based platform designed by BeagleBoard.org community members and sold by Digi-Key.

Hardware: OMAP3530 processor delivers laptop-like performance at handheld power levels Over 1,200 Dhrystone MIPS using the superscalar ARM Cortex-A8 with highly accurate branch prediction and 256KB L2 cache running at up to 600MHz OpenGL© ES 2.0 capable 2D/3D graphics accelerator capable of rendering 10 million polygons per second HD video capable TMS320C64x+™ DSP for versatile signal processing at up to 430MHz USB power

http://focus.ti.com/docs/prod/folders/print/omap3530.html