SAMSUNG-ELECTRONICS
Samsung Electronics Co., Ltd., a world leader in advanced semiconductor technology, today introduced ISOCELL Auto 4AC, an automotive image sensor that offers advanced 120-decibel (dB) high dynamic range (HDR) and LED flicker mitigation (LFM) especially for surround-view monitors (SVM) or rear-view cameras (RVC) in high-definition resolution (1280 x 960). The new sensor is Samsung’s first imaging solution optimized for automotive applications.
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“The new ISOCELL Auto 4AC combines Samsung’s innovative and market-proven image sensor technologies with a unique CornerPixel™ solution for advanced HDR and LFM capabilities, offering exceptional viewing experiences regardless of lighting conditions,” said Duckhyun Chang, executive vice president of sensor business at Samsung Electronics. “Starting with the ISOCELL Auto 4AC, we plan to expand our automotive sensor lineup to areas such as camera monitor systems (CMS), autonomous driving and in-cabin monitoring.”
Various lighting situations on the road may pose obstacles to the driver. Quick transitions from a low-lit environment to a brighter one, such as exiting a tunnel, may require a few seconds for the driver’s eyes to adjust. Also, flickering from LED headlamps or road signage, such as street lamps and traffic lights, could become increasingly noticeable on the automotive system’s camera screen.
The ISOCELL Auto 4AC offers a safer driving experience with an enhanced field of view for the driver with its CornerPixel™ technology. The technology features a specialized pixel structure that mitigates LED light over 90-hertz (Hz). Within a single pixel area, it embeds two photodiodes, one 3.0µm pixel for viewing low light images, and a 1.0µm pixel placed at the corner of the big pixel for brighter environments. With two photodiodes capturing images in different exposures simultaneously, the sensor offers up to 120dB HDR with minimal motion blur, allowing smoother transitions between dark and bright areas while preserving more details of the road ahead.
To minimize LED flickering, the smaller photodiode’s exposure time can be extended, preventing pulsing LED light from being displayed as flickering on the camera screen. This delivers a more pleasant viewing experience for the driver and more accurate image data on LED-embedded objects for the automotive system to recognize.
The Samsung ISOCELL Auto 4AC comes in a 1/3.7-inch optical format with 1.2 million 3.0-micrometer (µm) pixels, and for streamlined client system installations, an image signal processor (ISP) is embedded within the sensor.
The 4AC meets stringent AEC-Q100 Grade 2 qualifications, including a -40°C to 125°C operating temperature range, and is currently in mass production.
About Samsung Electronics Co., Ltd.
Samsung inspires the world and shapes the future with transformative ideas and technologies. The company is redefining the worlds of TVs, smartphones, wearable devices, tablets, digital appliances, network systems, and memory, system LSI, foundry and LED solutions. For the latest news, please visit the Samsung Newsroom at http://news.samsung.com .
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* Editor’s Note: Actual performance may vary depending on device and user environment.
* Samsung first announced its ISOCELL technology in 2013, which reduces color crosstalk between pixels by placing a physical barrier, allowing small-sized pixels to achieve higher color fidelity. Based on this technology, Samsung introduced the industry’s first 1.0um-pixel image sensor in 2015 and a 0.9-pixel sensor in 2017. Samsung continues to enhance its pixel isolation methods with ISOCELL Plus and the ISOCELL 2.0 technologies.
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