Image co-processors for automotive cameras

Paul Boughton

ON Semiconductor enables high dynamic range (HDR) 1080p automotive camera systems with the introduction of a new series of image co-processors. Designed to work in conjunction with the company’s high performance 2 megapixel (MP) and 1.2 MP image sensor devices, the new AP020x series of co-processors enable a full range of complete solutions for automotive rear view and surround view cameras.

The new image co-processors all incorporate an advanced HDR colour pipeline with adaptive local tone mapping (ALTM). The AP0200, AP0201 and AP0202 support up to 2 MP 1080p image sensors, and the AP0102AT supports up to 1.2 MP 720p image sensors. All of the co-processors offer support for functional safety features Automotive Safety Integrity Level (ASIL) levels A and B. They support 30 frames/second (fps) operation at 1080p, 45 fps at 960p and 60 fps at 720p. They also support Ethernet or parallel output interfaces, and incorporate I2C, SPI (Serial Peripheral Interface) and general purpose input/outputs (GPIOs). Each has an operating temperature range of -40 °C to +105°C (ambient) and is fully AEC-Q100 qualified.

The AP0200AT image co-processor is optimised for rear view cameras and offers Ethernet output. It also includes a spatial transform engine (STE) which enables lens distortion correction and de-warping, as well as a sophisticated overlay graphics engine.

The AP020x family will be offered as combined tuned solutions with existing image sensors such as the 1MP AR0140AT, AR0132AT and AR0136AT, as well as the new AR0230AT 2 MP 1080p sensor. These combination solutions of sensor plus co-processor provide automotive Tier 1s with the widest range of options for multiple market segments, while speeding time to market.