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Low-End Camera Monitoring System

Overview

Description

This cost-effective camera monitoring system (CMS) design leverages an automotive-grade MCU for diagnostics and an LCD video processor for video adjustment and output. The system integrates an optical sensor to measure environmental illuminance, enabling dynamic display brightness management. The MCU processes data from the light sensor to control brightness, while the LCD video processor adjusts and outputs the video signal. This ensures optimized visibility across varying ambient light conditions.

System Benefits:

  • Cost-effective CMS features an automotive MCU, video signal processor (VSP), optical sensor, and power devices.
  • Optional Automotive HD Link (AHL) supports low-cost twisted-pair cable usage.
  • Suitable for commercial and other vehicle CMS applications.

Comparison

Applications

  • Camera monitoring systems (CMS) for commercial vehicles or other vehicle types

Block Diagram

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4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 CN605 CN605 CN605 Optical Sensor Optical Sensor Optical Sensor PTC Defrost PTC Defrost PTC Defrost EEPROM EEPROM EEPROM Cockpit SoC Cockpit SoC Cockpit SoC Bi-directional Bi-directional.23 Connector Arrow +5V +5V +5V Connector Arrow.27 Connector Arrow.28 Connector Arrow.29 Connector Arrow.30 Connector Arrow.31 Connector Arrow.32 Connector Arrow.33 +3.3V@3Amax +3.3V@3Amax +3.3V@3Amax Label Text 10pt.35 +3.3V@3Amax +3.3V@3Amax +3.3V@3Amax Bi-directional.37 Connector 1.163 Bi-directional.41 Connector Arrow.42 Connector Arrow.43 Connector Arrow.44 Connector Arrow.45 Connector Arrow.46 Connector 1.163.47 +12V +12V +12V Connector Line Connector Arrow.51 Connector 1.163.52 Connector Arrow.53 Bi-directional.54 Connector 1.163.55 Connector 1.163.56 Connector Arrow.57 Connector 1.163.58 Connector Arrow.61 Buck Buck Buck VSP VSP VSP AHL-Encoder AHL-Encoder AHL-Encoder AHL-Decoder AHL-Decoder AHL-Decoder AHL-Decoder AHL-Decoder AHL-Decoder Display Monitor Display Monitor Display Monitor LED Driver LED Driver LED Driver CAN Transceiver CAN Transceiver CAN Transceiver Camera Module Camera Module Camera Module Buck Buck Buck Line Bi-directional Sheet.69 MCU MCU MCU I2C I2C I2C GPIO GPIO GPIO I2C I2C I2C PWM PWM PWM CAN CAN CAN Bi-directional.72
Exiting Interactive Block Diagram