Touch Screen Dot Rendering via Pressure-Adaptive Sizing

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Solution Overview

Problem

Conventional drawing applications on touch screen devices cannot dynamically adjust the dot size during a stroke, leading to fixed dimensions and the need for users to create varying line widths by drawing multiple strokes with different settings.

Innovation Solution

A method and apparatus that utilize pressure indicia to compute and dynamically adjust the dot size in real-time as the user applies force to the touch screen, allowing for varying stroke widths without the need for multiple strokes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional drawing applications use fixed dot size for entire stroke, then the rendering process is simple and fast, but the ability to create varying line widths is lost

Engineering Contradiction:

Improveability to create varying line widthsVSAvoidcomplexity of controlling dot size

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent changes the parameter of dot size dynamically during stroke creation by mapping it to the pressure applied by the user. As pressure varies, the dot size parameter changes accordingly, enabling varying line widths without requiring multiple separate strokes or complex manual adjustments.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system automatically adjusts dot size based on user pressure input, eliminating the need for users to manually configure multiple stroke settings. The application serves itself by translating physical pressure directly into rendering parameters, making the process intuitive and automatic.

Inventive Principle:

Principle #25Self-service

2Productivity

If users create varying line widths by drawing multiple strokes with different settings, then dot size control is precise, but the time and effort required increases significantly

Engineering Contradiction:

Improvespeed of creating varying line widthsVSAvoidtime to draw multiple strokes

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent enables continuous stroke creation where the user can draw uninterrupted while the system continuously adjusts dot size based on real-time pressure measurements. This eliminates the need to stop and reconfigure settings between strokes, maintaining continuous artistic expression.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system transitions from static dot size configuration to dynamic adjustment during stroke execution. The dot size becomes a dynamic parameter that responds in real-time to pressure changes, allowing fluid and natural variation in line width throughout the stroke.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If dot size is adjusted manually for each stroke, then precision control is achieved, but the natural feel of drawing is lost

Engineering Contradiction:

Improvenatural feel of drawingVSAvoidcontrol over dot size

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The system implements feedback by continuously monitoring pressure sensor data and immediately translating it into dot size adjustments. This closed-loop control provides natural, responsive behavior where the user's physical input directly influences the rendering output in real-time, creating an intuitive drawing experience.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS9459790B2Method and apparatus for controlling dot rendering on a touch screen

Publication Date: 2016.10.04 ADOBE INC

AI summary

A method and apparatus for controlling dot rendering for a touch screen. The method and apparatus receives indicia of pressure on the touch screen, where the pressure indicia represents an amount of force applied to the touch screen. From the indicia, the method and apparatus computes a dot size and renders a dot having the computed dot size on the touch screen.