Vehicle Lamp Control Using Memory-Based Turn Signal Patterns
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Solution Overview
Problem
Existing vehicle lamps lack the ability to easily adapt to various turn-on patterns for turn signal lamps without significant changes to hardware or software.
Innovation Solution
A vehicle lamp system with independently controllable light emitting elements, a nonvolatile memory for storing control parameters, and a signal processing device that generates turn-on commands based on these parameters to achieve different turn-on patterns, allowing for flexible control of light emission timing and luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lamp control system is designed according to required specifications for turn signal lamps, then the turn signal lamp can operate according to specific turn-on patterns, but the system cannot easily adapt to various turn-on patterns without changing hardware or software program
Solution Approach 1:
The patent applies parameter changes by storing different turn-on pattern parameters in a nonvolatile memory and switching between them based on vehicle type or configuration. Instead of redesigning hardware or software for each turn-on pattern, the system changes operational parameters (timing, sequence, duration of light emitting element activation) to achieve different turn signal behaviors while maintaining the same physical lamp structure and control software.
Solution Approach 2:
The patent implements universality by designing a single lamp control system that can perform multiple turn-on patterns through parameter switching. The same hardware configuration and software program can accommodate different vehicle specifications by loading appropriate parameters from nonvolatile memory, making the system multi-functional without requiring separate designs for each turn signal pattern.
2Adaptability or versatility
If the functionality of vehicle lamp is enhanced with multiple lamps having different roles, then the lamp can provide various lighting functions, but it becomes necessary to control each light source with appropriate luminance according to control signals
Solution Approach 1:
The patent manages multiple light sources by controlling parameters such as luminance, timing, and activation sequence of each light emitting element. By adjusting these parameters based on the required lamp function (turn signal, position lamp, daytime running lamp), the system can switch between different operational modes without requiring separate control circuits for each function, thus managing complexity through parameter variation rather than structural multiplication.
Data Source
AI summary
A vehicle lamp includes a turn lamp, a nonvolatile memory, a signal processing device, and a drive circuit. The turn lamp includes a plurality of light emitting elements that independently controllable to be turned on and off. The nonvolatile memory stores a parameter related to control of the plurality of light emitting elements. The signal processing device generates, based on the parameter, a plurality of turn-on commands indicating turn-on states of the plurality of light emitting elements at each time point by executing a software program. The drive circuit drives each of the plurality of light emitting elements based on the plurality of turn-on commands.