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CMOS sensor suits driver assistance apps

Posted: 22 Apr 2009 ?? ?Print Version ?Bookmark and Share

Keywords:CMOS? image sensor? image SoC? application driver assistance?

OmniVision Technologies Inc. has launched its latest AutoVision imaging solutions, designed to address the automotive industry's demand for more vivid imaging in driver assistance applications such as back-up camera and blind spot detection systems.

The ultracompact 1/4-inch OV7960 and OV7962 delivers low-light performance (CMOS devices.

"Our latest AutoVision devices deliver the superior low-light performance and ultracompact package designers need to produce vivid high-definition images for the next wave of driver assistance applications," said Inayat Khajasha, senior product manager for automotive solutions at OmniVision. "With the industry's best responsivity of 12V/lux-sec, we're confident in our ability to meet the demand of new vehicle manufacturers, particularly as in-vehicle video continues to rise in popularity."

Demand for in-vehicle video cameras is expected to rise as automotive manufacturers integrate video cameras in more mainstream vehicles. According to Techno Systems Research, the percentage of new vehicles with integrated cameras is projected to increase from ~20 percent in 2008 to nearly 70 percent in 2012. CMOS sensors are projected to represent the majority of unit sales, as CCD unit sales continue to decline.

"In the current economic environment, automakers are looking to substantially reduce costs while continuing to add new features and improve image quality and reliability," said Tetsuo Omori, senior analyst at TSR. "OmniVision's new AutoVision solution provides the right product at the right time, and should further strengthen their leadership position in this fast growing and evolving market."

CMOS advantage
The OV7960/OV7962 provide the inherent advantages of CMOS, including higher integration and a lower overall BOM cost, while exceeding the performance of competing CCD solutions. Built on the most advanced front side illumination OmniPixel3-HS architecture, the high-performance OV7960 provides the full functionality of a single-chip analog output sensor. The OV7960 is optimized for interlaced NTSC/PAL signal formats to directly interface with in-car LCD screens or devices with 75 Ohm loading, while the OV7962 is optimized for digital progressive and analog applications. Both versions operate across a wide-temperature range, from -400C to 105C meeting AEC-Q100, grade-2 requirements.

Extra pixels in both devices allow users to adjust the camera setup by moving the active area of the image in both vertical and horizontal directions. This feature is especially useful in fine tuning the viewing window to compensate for mechanical misalignments.

Realizing that electronic distortion correction has major disadvantages such as latency, loss of image resolution, and additional processing/heat source, OmniVision has worked closely with lens partners to develop a unique distortion corrected lens solution, resulting in optimized system performance, superior overall image quality, lowest possible system cost and faster time-to-market.

Offering the smallest package of 6.67mm x 7.12mm x 0.71mm, the OV7960 and OV7692 devices are provided in identical 62-pin AutoVision CSP lead-free packages. Samples are immediately available with volume production projected for Q3 09.

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