In-Cabin Display Power Control Using Passenger Trajectory Sensing
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Solution Overview
Problem
The operation of display devices in motor vehicles is complex and prone to errors due to traditional input methods, leading to driver distraction and high power consumption, especially in electric vehicles where running multiple displays strains the power system.
Innovation Solution
A method utilizing non-contact input operations detected by sensors, such as depth image cameras, to select and manipulate display elements based on user characteristics like line of vision, body position, and hand gestures, reducing errors and power consumption by adapting display settings according to user interaction and presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional input units (buttons, joysticks, touchpads) are used to operate display areas, then the display device can be controlled, but the operation becomes complex and results in inputting errors and driver distraction
Solution Approach 1:
The patent replaces mechanical input devices (buttons, joysticks, touchpads) with a gesture recognition system that uses optical sensors and image processing to detect hand movements and gestures in the air space above the display. This substitution eliminates physical contact requirements and simplifies the interaction model while improving accuracy through multiple detection parameters.
Solution Approach 2:
The patent introduces an intermediary gesture recognition system that mediates between the driver and the display control functions. This intermediary layer interprets natural hand gestures and translates them into precise control commands, reducing the complexity of direct interaction while maintaining high accuracy through multiple verification parameters.
2Adaptability or versatility
If multiple displays and projectors are installed in the vehicle, then additional information and functionality are provided, but power consumption and fuel consumption increase significantly
Solution Approach 1:
The patent implements dynamic power management for display devices based on real-time detection of user presence and attention. The system adjusts display activation, brightness levels, and content presentation dynamically according to whether a user is present, looking at the display, or engaged in other activities, thereby reducing power consumption while maintaining full functionality when needed.
Solution Approach 2:
The patent changes operational parameters of display devices (power state, brightness, refresh rate) based on detected user conditions. When no user is present or attention is detected elsewhere, the system transitions displays to lower power states or turns them off completely, thereby reducing energy consumption while preserving full adaptability when users are present.
3Ease of operation
If gesture-based input systems are used to operate displays, then non-contact operation is achieved, but random gestures are wrongly recognized and multiple complex gestures are required
Solution Approach 1:
The patent implements preliminary verification of gesture inputs by detecting and validating multiple parameters (hand position, movement trajectory, gesture shape, temporal characteristics) before executing the intended command. This preliminary verification process filters out random or unintended gestures while maintaining simple, natural gesture requirements for valid inputs.
Solution Approach 2:
The patent incorporates feedback mechanisms that monitor gesture execution and provide confirmation or correction. The system validates gestures through multiple detection parameters and provides feedback loops to distinguish intentional commands from random movements, thereby improving recognition accuracy while maintaining ease of non-contact operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a reliable and user-friendly operation of display devices by minimizing errors and optimizing power usage, ensuring efficient power management and reduced driver distraction.
Implementation Method 1
detecting an input based on at least one of a position and movement of a passenger body part using the one or more sensors, wherein the detecting comprises detecting one or more inputs, the one or more inputs comprising at least one of a proximity of the body part relative to the one or more output means and a trajectory of the body part relative to the one or more output means
Data Source
AI summary
A method of operating one or more output means for a motor vehicle that includes providing one or more sensors and the one or more output means, detecting an input based on at least one of a position and movement of a passenger body part using the one or more sensors, and controlling power consumption of the one or more output means based on the detected input where this detecting includes detecting one or more inputs, the one or more inputs comprising at least one of a proximity of the body part relative to the one or more output means and a trajectory of the body part relative to the one or more output means.