Recognize traffic signals in any situation with LFM function

ON Semiconductor has announced the availability of samples of its 2.3 megapixel (MP) CMOS image sensor featuring LED Flicker Mitigation (LFM) technology, setting a new standard for Advanced Driver Assistance Systems (ADAS) applications.
Capable of capturing 1080p HDR (High Dynamic Range; a digital image processing technique with a wide dynamic range for different exposures) video, the AR0231AT device also supports Automotive Safety Integrity Level B (ASIL B).

LFM technology (patent pending) enables traffic signal recognition algorithms to operate in any lighting conditions by eliminating high-frequency LED flicker from traffic signals or automotive LED lights. The AR0231AT has an optical format of 1/2.7 inch (6.82 mm) and a 1,928 (horizontal) x 1,208 (vertical) active pixel array.



The device features ON Semiconductor's latest 3.0-micron backside-illuminated (BSI) pixel with DR-Pix™ technology, which enables dual conversion gain (DGC) for enhanced performance under all lighting conditions. It can capture images in linear, HDR, and LFM modes, with frame-by-frame context switching between each mode.

This new device offers up to four exposures of HDR, capturing images with a dynamic range exceeding 120 dB with excellent noise reduction. The AR0231AT supports multi-camera synchronization, facilitating the implementation of automotive applications utilizing multiple sensor nodes. This is achieved via a simple, user-programmable, two-wire serial interface. The device also offers multiple data interfaces, including MIPI, parallel, and HiSPi. Other key features include selectable automatic and user-defined black level control, support for spread-spectrum input clocks, and a variety of color filter array options.

“With the introduction of the AR0231AT, ON Semiconductor once again demonstrates its leadership in this field by being the first to sample a sensor with LFM capability,” said Alvin Wong, senior director, Automotive Imaging and Scanning Division at ON Semiconductor. “The ability to support LFM and ASIL B in a 2.3 MP, 1080p BSI image sensor represents an ideal combination for high-performance automotive ADAS cameras.”