Pixelated Light Beam Transition Using Sequential Pixel Grouping

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Solution Overview

Problem

Existing methods for transitioning a pixelated light source from an initial beam to a target beam, such as from high beam to low beam, are computationally costly and inefficient when dealing with a large number of pixels, leading to increased system costs.

Innovation Solution

A method that groups pixels into at least two groups and successively drives these groups by modifying the luminosity of each pixel from an initial to a target value, without the need to determine intermediate luminosity values for all pixels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If intermediate luminosity values are calculated for all pixels to achieve smooth beam transition, then the visual smoothness of transition is improved, but the computational cost increases drastically

Engineering Contradiction:

Improvevisual smoothness of beam transitionVSAvoidcomputational cost

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The pixel array is divided into multiple zones, and the transition is achieved by sequentially updating zones rather than calculating intermediate values for all pixels simultaneously. This segmentation reduces the computational burden while maintaining visual smoothness through controlled propagation of luminosity changes across zones.

Inventive Principle:

Principle #1Segmentation

2Manufacturing precision

If the number of pixels is increased to achieve higher beam precision, then the beam precision is improved, but the computational cost increases

Engineering Contradiction:

Improvebeam precisionVSAvoidcomputational cost

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

By dividing the high-resolution pixel array into multiple zones and updating them sequentially, the system can handle a large number of pixels without requiring computationally expensive simultaneous calculations for all pixels. The zone-based approach enables high beam precision while keeping computational costs manageable.

Inventive Principle:

Principle #1Segmentation

3Reliability

If beam transition is made gradual to meet aesthetic and safety requirements, then the safety and aesthetics are improved, but the transition duration increases

Engineering Contradiction:

Improvesafety of beam transitionVSAvoidtransition duration

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The beam transition is implemented as a periodic process that sequentially updates multiple zones with different luminosity interpolation factors. By cycling through zones in a controlled sequence rather than uniformly adjusting all pixels, the system achieves smooth visual transitions within a constrained time frame, balancing safety requirements with transition speed.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20250040005A1Driving groups of pixels of a light source so as to produce a light transition

Publication Date: 2025.01.30 VALEO VISION SA

AI summary

A method for controlling a pixelated light source which includes a plurality of pixels. Following the receipt of a command to transition from an initial beam to a target beam, a target luminosity based on the target beam is defined for each pixel of the pixelated light source. The pixels of the light source are then grouped into at least two groups of pixels and the method includes successively driving the groups of pixels. Driving a group of pixels includes modifying the luminosity of each pixel of the group, from an initial luminosity to the target luminosity of the pixel.