Parking Assistance System with AHL Camera

This automotive parking assistance camera system uses Renesas’ Analog High-Definition Link (AHL) solution, which is a high-definition analog video transmission technology. By leveraging the lower transmission bandwidth of AHL, the OEM can use low-cost twisted pair cabling and traditional connectors. The AHL camera reference design has an OmniVision OX01F 1.3 megapixel (MP) SoC (Sensor + ISP) and Renesas camera PMIC, and features low power consumption in a small module size, making it ideal for automotive camera systems. The AHL signal is transmitted over unshielded twisted pair cables, received by the ECU, decoded, and converted to digital format, and then sent to the SoC for video analytics and parking assist graphical overlay. The final video is sent to a display module that utilizes a TW8846 (or RAA278842) LCD controller to drive the LCD panel.

System Benefits​:

• AHL is an HD analog video link solution for parking assistance camera systems.
• Ideal for rear camera, surround view, and mirror replacement camera systems.
• HD video transmission using low-cost SD analog video cables and connectors.
• Lower cable and connector costs by ~30% for automotive camera systems compared to digital transmission.
• No latency and no loss in picture quality or object recognition software accuracy.
• Bidirectional I²C control channel – independent of the video.
• SoC: Low power consumption hardware accelerators for object detection/classification algorithms.
• Optimized power management ICs for the camera and ECU.