Vehicle Headlamp Light Array Control With Low-Bandwidth Rendering
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Solution Overview
Problem
Current vehicle headlamp systems face challenges with high-bandwidth data links that increase cost and complexity, strain communication infrastructure, and limit flexibility in projecting dynamic images due to inefficient data transmission and processing.
Innovation Solution
A remote node system that stores mathematical functions for generating predetermined image types and uses low-bandwidth communication to transmit selection data, enabling efficient image generation and overlay information, reducing the need for high-bandwidth data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-bandwidth data links are used to transmit detailed image data from the vehicle CPU to the headlamp light array, then image quality and resolution are improved, but system cost and complexity increase significantly
Solution Approach 1:
The patent extracts only the essential control parameters (beam pattern selection, intensity levels, operational modes) from the complete image data, transmitting only these extracted parameters over the low-bandwidth CAN bus while generating the actual light patterns at the headlamp unit using stored mathematical functions
Solution Approach 2:
The patent uses mathematical functions stored in the headlamp control unit to generate light patterns that replicate the effect of transmitting full image data, thereby achieving high-resolution output without requiring high-bandwidth data transmission
2Speed
If high data rates are used to transmit image data, then image transmission speed is improved, but the vehicle's communication infrastructure is strained
Solution Approach 1:
The patent extracts and transmits only the critical control parameters (beam pattern ID, intensity values, operational mode) rather than complete image data, reducing data rate requirements and preventing strain on the vehicle's communication infrastructure
Solution Approach 2:
The patent changes the nature of transmitted data from high-volume image pixels to compact control parameters, fundamentally altering the data representation to achieve fast response times without requiring high data rates
3Measurement precision
If large amounts of raw image data are transmitted, then image detail is improved, but transmission efficiency decreases and latency increases
Solution Approach 1:
The patent extracts only the essential parameters needed to define beam patterns (selection data, intensity values, mask coordinates) from complete image data, achieving high transmission efficiency while maintaining the ability to generate detailed light patterns at the headlamp unit
Solution Approach 2:
The patent pre-stores multiple mathematical functions for generating different beam patterns and image types in the headlamp control unit, allowing rapid generation of detailed images without requiring transmission of the actual image data
4Adaptability or versatility
If high-bandwidth data links are implemented, then flexibility in projecting dynamic images is improved, but system cost increases
Solution Approach 1:
The patent implements a universal control parameter format that can represent multiple image types (low beam, high beam, adaptive patterns, overlay information) using the same transmission protocol and mathematical function set, achieving high flexibility without requiring specialized infrastructure for each function
Solution Approach 2:
The patent uses mathematical functions to generate diverse dynamic image patterns, effectively copying the flexibility of high-bandwidth systems through algorithmic generation rather than direct data transmission
Data Source
AI summary
There is provided a remote node for controlling a vehicle headlamp light array. The remote node comprising: a memory configured to store a plurality of mathematical functions for generating a corresponding plurality of predetermined image types, wherein the plurality of image types comprises at least a low beam image and a high beam image; a receive interface configured to receive frame data, wherein the frame data comprises selection data indicative of a selected one of the plurality of image types; a rendering engine configured to generate, using a mathematical function of the plurality of mathematical functions corresponding to the selected one of the plurality of image types, a signal usable by the vehicle headlamp light array to generate an output image; and an output interface configured to output the signal to the vehicle headlamp light array.