Haptic Device Sub-Action Control for Thermal Management
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Solution Overview
Problem
Existing electronic apparatuses using haptic technology face overheating issues due to continuous haptic actions with constant driving voltage or frequency, leading to poor user experience and increased power consumption.
Innovation Solution
The electronic apparatus and method involve a haptic device that produces a series of sub-actions with varying driving voltages, frequencies, and durations, tailored to the touch mode, allowing real-time adjustments to reduce heat and power consumption without additional heat dissipation structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If continuous haptic actions with constant driving voltage or frequency are used, then the haptic effect is maintained, but overheating occurs and power consumption increases
Solution Approach 1:
The patent applies periodic action by dividing continuous haptic feedback into multiple discrete sub-actions that are delivered in sequence. The driving circuit activates the haptic device for specific time intervals (sub-actions) rather than continuously, with each sub-action having its own driving voltage and duration parameters. This periodic activation pattern reduces overall power consumption and heat generation while still providing effective haptic feedback to the user.
Solution Approach 2:
The patent implements dynamics by making the driving voltage and frequency parameters variable rather than constant. The processor dynamically adjusts the driving voltage and frequency for each sub-action based on the touch mode classification and desired haptic effect. This dynamic parameter adjustment allows the system to optimize power consumption and temperature management while maintaining effective haptic delivery.
2Temperature
If continuous haptic actions with constant driving voltage or frequency are used, then the haptic effect is maintained, but device size increases due to additional heat dissipation structures
Solution Approach 1:
By using periodic sub-actions instead of continuous operation, the system reduces the need for large heat dissipation structures. The haptic device is activated in intermittent bursts, allowing heat to dissipate between sub-actions, thereby reducing the required volume for thermal management components and keeping the overall device compact.
Solution Approach 2:
The patent converts the potential harm of heat generation into a benefit by using the heat dissipation periods between sub-actions as intentional design features. The timing and duration of sub-actions are optimized to allow natural heat dissipation, transforming the thermal management challenge into an opportunity to reduce device volume without requiring additional active cooling structures.
3Loss of energy
If multiple sub-actions with varying parameters are used, then power consumption and temperature are reduced, but the complexity of the driving circuit increases
Solution Approach 1:
The patent applies segmentation by dividing the haptic feedback into multiple sub-actions with different driving parameters. The driving circuit is designed to handle these segmented sub-actions through programmable control, where each sub-action can have independent voltage, frequency, and duration settings. This segmentation approach manages complexity through modular design, allowing the circuit to be controlled by software algorithms rather than complex hardware logic.
Solution Approach 2:
The patent implements parameter changes by varying driving voltage, frequency, and duration across different sub-actions. The driving circuit incorporates programmable parameters that can be adjusted through software control, allowing flexible optimization of power consumption and temperature management without requiring multiple dedicated hardware circuits for each parameter variation.
4Loss of energy
If haptic actions are optimized for power efficiency, then user experience improves, but the quality of haptic feedback may deteriorate
Solution Approach 1:
The patent optimizes haptic feedback quality through parameter changes by adjusting driving voltage, frequency, and duration for each sub-action based on the classified touch mode. The system maintains high haptic feedback quality by intelligently selecting parameter combinations that provide effective tactile response while consuming less power, using algorithms that optimize the balance between quality and energy efficiency.
Solution Approach 2:
The patent implements feedback mechanisms where the processor classifies touch modes and adjusts sub-action parameters accordingly. This closed-loop approach ensures that haptic feedback quality is maintained by adapting the driving parameters to the specific touch context, providing reliable and appropriate haptic response while optimizing power consumption for each interaction scenario.
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 approach effectively lowers the temperature at the touch contact interface, reduces power consumption, and enhances user experience by allowing flexible adjustments to the driving signal, while maintaining a compact device size.
Implementation Method 1
a haptic device HD and a driving circuit DC. The haptic device HD includes a plurality of units U arranged along a first direction DR1. Each unit U may include a first electrode layer E1, an electroactive layer EAL on the first electrode layer E1, and a second electrode layer E2 on a side of the electroactive layer EAL away from the first electrode layer E1
Data Source
AI summary
An electronic apparatus is provided. The electronic apparatus includes a touch control device configured to detect a touch; a processor configured to classify the touch into one of at least two modes; a haptic device configured to produce a haptic action accompanying an individual touch action; and a driving circuit configured to drive the haptic device. The processor is configured to, upon determination that the touch is of a first mode, transmit a first driving signal to the driving circuit. The driving circuit is configured to, upon receiving the first driving signal, drive the haptic device to produce a plurality of sub-actions cumulatively achieving at least a part of the haptic action accompanying the individual touch action. At least two sub-actions of the plurality of sub-actions are different from each other in at least one parameter.