LED Controller Interface for Cost-Effective Video Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Advanced vehicle headlamp systems require efficient control and driving of light emitting diodes (LEDs) to achieve glare reduction, enhanced illumination, and adaptive lighting effects, but existing systems face challenges in cost-effective video data communication within the headlamp circuit, often necessitating high-speed interfaces that increase component costs.
Innovation Solution
The implementation of a circuit with an LED controller and driver that utilizes a slower data rate interface for video data communication between the controller and driver, employing a one-wire unidirectional interface to simplify the system and reduce costs while maintaining reliable data transfer, allowing for adaptive lighting effects based on navigation and object detection data processed by a graphics processing unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultra-high-speed video communication interfaces are used within the headlamp circuit, then reliable video data transfer is achieved, but component costs increase
Solution Approach 1:
The patent changes the data rate parameter of the video communication interface from ultra-high-speed to slower speed within the headlamp circuit. The external interface maintains high-speed communication with the vehicle system, while the internal interface between the video processing unit and LED control unit operates at a reduced data rate, thereby reducing component costs while maintaining reliable video data transfer for LED control
2Productivity
If high-speed video interfaces are implemented within the headlamp system, then effective data communication is achieved, but device complexity increases
Solution Approach 1:
The patent applies different interface speed characteristics to different parts of the system. The external interface (between vehicle system and headlamp) operates at high speed for effective data communication, while the internal interface (within the headlamp circuit) operates at a slower, simpler speed. This local differentiation of interface qualities reduces overall device complexity while maintaining communication effectiveness where needed
Data Source
AI summary
A circuit may be configured to control a vehicle headlamp comprising light emitting diodes (LEDs). The circuit may comprise an LED controller configured to receive video data from a video source via a first interface; an LED driver configured to drive the LEDs based at least in part on the video data; and a second interface between the LED controller and the LED driver, wherein the second interface is configured to communicate the video data from the LED controller to the LED driver and wherein the second interface communicates the video data at a slower data rate than the first interface.