Active Vibration Haptic Feedback for Display Surfaces

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Solution Overview

Problem

Traditional stylus technologies compromise between the feel and viewing quality of a display device, as rough surfaces used to enhance feel can degrade the display's visibility.

Innovation Solution

Active vibration techniques are employed to simulate different writing surfaces and implements through vibrations of a stylus or the computing device's surface, allowing for customizable haptic feedback and pressure-based inputs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a rough surface is used on the display device to enhance stylus feel, then the writing feel is improved, but the viewing quality of the display is degraded

Engineering Contradiction:

Improvewriting feelVSAvoidviewing quality

Core Design Contradiction:

Ease of operationVSIllumination intensity

Solution Approach 1:

The patent applies mechanical vibration through a vibration generator to create haptic feedback that simulates different writing surface textures. Instead of physically modifying the display surface, the system generates controlled vibrations that mimic the tactile sensations of various surfaces (paper, glass, wood, etc.), thereby maintaining display clarity while providing enhanced writing feel through active haptic feedback.

Inventive Principle:

Principle #18Mechanical vibration

2Adaptability or versatility

If multiple writing surface types are provided through physical variations, then the versatility is improved, but the device complexity increases

Engineering Contradiction:

Improvewriting surface varietyVSAvoidsurface configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system changes the parameters of vibration (frequency, amplitude, pattern) to simulate different writing surface characteristics. By dynamically adjusting vibration parameters through software control, the system can emulate multiple surface types without requiring multiple physical surfaces, thereby achieving high versatility with minimal hardware complexity.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

A single vibration generator serves multiple functions by producing different vibration patterns to simulate various writing surfaces. The same hardware component can create sensations equivalent to paper, glass, wood, and other surfaces through programmed vibration sequences, eliminating the need for multiple specialized components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 enhances user experience by providing customizable feel and functionality, such as varying line thickness and pressure-sensitive haptic feedback without degrading the display quality.

Implementation Method 1

a vibration generator configured to generate vibrations of the display device

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 2

the stylus includes a piezoelectric element configured to vibrate the stylus in response to a signal from the processor

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Data Source

PatentUS8803671B2Active vibrations

Publication Date: 2014.08.12 MICROSOFT TECHNOLOGY LICENSING LLC

AI summary

Active vibration techniques are described. In implementations, a selection of a type of writing surface or a type of writing implement is received, the selection made through interaction with a user interface. The selected type of writing surface or type of writing implement is simulated using vibrations of a stylus or surface of a computing device that is configured to receive one or more inputs from the stylus.