Force-Based Touch Input Media Control

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Solution Overview

Problem

Conventional electronic devices with touch-sensitive surfaces for media playback control require users to visually identify and interact with icons, disrupting user activities and being inefficient, especially when used in contexts like walking or conversations.

Innovation Solution

Implementing a method that allows media playback control through force or pressure-based inputs on touch-sensitive surfaces without requiring users to look at the screen, using intensity thresholds to differentiate between actions such as play, pause, or skip, and integrating these controls into a more efficient human-machine interface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional touch-sensitive surface controls are used for media playback, then the device provides basic playback control functionality, but the user must visually identify and interact with icons, disrupting user activities and reducing efficiency

Engineering Contradiction:

Improvemedia playback control efficiencyVSAvoiduser activity interruption time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The touch-sensitive surface is segmented into multiple distinct input zones, each associated with a specific media playback control function. This spatial segmentation allows users to intuitively control playback without visual identification, as each zone's position and function are predetermined and consistent

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system automatically determines user intent based on the detected input characteristics (location, intensity, duration) without requiring explicit visual confirmation. The touch-sensitive surface itself provides the control interface, eliminating the need for separate visual identification steps

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If multiple input methods are provided for media control, then user flexibility increases, but the number of inputs required and system complexity increase

Engineering Contradiction:

Improveinput method flexibilityVSAvoidcontrol interface complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The touch-sensitive surface serves multiple functions: it detects both the location and intensity of touches, and uses these parameters to differentiate between various media control commands. This multi-functionality allows diverse control capabilities within a single unified interface, avoiding the need for multiple separate controls

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses variations in touch parameters (intensity, duration, location) to encode different control commands. By changing which parameters are measured and how they are interpreted, the system achieves multiple control functions without adding physical complexity

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If intensity-based controls are implemented, then power consumption increases due to additional sensor activity, but user efficiency and satisfaction improve

Engineering Contradiction:

Improvecontrol intuitivenessVSAvoidpower consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The system activates intensity detection only when and where needed - specifically when a touch is detected on the touch-sensitive surface. The intensity measurement is performed selectively based on the presence and characteristics of the touch input, rather than continuously across the entire surface, optimizing the balance between control capability and power consumption

Inventive Principle:

Principle #16Partial or excessive action

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

Enables users to control media playback seamlessly and efficiently without visual attention, reducing the number of inputs needed, conserving power, and enhancing user satisfaction and battery life by integrating intuitive force-based controls into the user interface.

Implementation Method 1

a touch-sensitive surface with sensors to detect intensity of contacts with the surface

Methodology Applied

Scientific EffectCapacitive sensing: Capacitance

Data Source

PatentUS10133543B2Devices, methods, and graphical user interfaces for media playback control using intensity-based user inputs

Publication Date: 2018.11.20 APPLE INC

AI summary

A method is performed at an electronic device. While media is playing, the device detects a contact at a touch-sensitive surface location associated with a first media playback control. If the device is operating in a first media playback mode, the device performs a media playback operation associated with the first media playback control when a characteristic intensity of the contact remains below a first intensity threshold. If the device is operating in a second media playback mode, and a characteristic intensity of the contact exceeds the first intensity threshold, the device performs the media playback operation associated with the first media playback control. If the device is operating in the second media playback mode and the characteristic intensity of the contact remains below the first intensity threshold, the device continues playing the media on the device without performing the media playback operation associated with the first media playback control.