Virtual Cursor Feedback for Pseudo Force Without Trajectory Shift

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional pseudo haptic techniques require changing the movement trajectory or size of a cursor to provide a haptic impression, which hinders the original operation of the user.

Innovation Solution

A pseudo force sense presentation device that includes a cursor detection unit, a cursor update unit, and a video display unit, which updates the cursor image based on position information to create an optical illusion of force without altering the cursor's actual position or size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the movement trajectory or size of the cursor is changed to provide a haptic impression, then the pseudo haptic effect is achieved, but the original cursor operation is hindered

Engineering Contradiction:

Improveoperation accuracyVSAvoidoperation naturalness

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent creates a virtual cursor that is a visual copy or representation of the actual cursor position. This virtual cursor is what undergoes transformation (delay, fluctuation, trajectory change) to create haptic effects, while the actual cursor position remains unchanged and accurately reflects the input device position. This copying approach allows the haptic effect to be applied to the visual representation without affecting the functional cursor operation.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent introduces a virtual cursor as an intermediary between the actual cursor position (from input device) and the visual display. This intermediary layer allows haptic effects to be applied to the visual feedback without directly modifying the actual cursor position data, thus maintaining the accuracy of the original operation while providing enhanced visual feedback.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the cursor image is updated continuously based on position information, then the pseudo force sense is presented, but the computational load increases

Engineering Contradiction:

Improveillusion effect qualityVSAvoidcomputational energy

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies partial action by selectively updating only the visual representation of the cursor rather than recalculating all position data. The virtual cursor image is updated based on the existing position information with added haptic effects, rather than performing complete position calculations from scratch, thus reducing computational energy while maintaining illusion effect quality.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250370585A1Pseudo force presenting apparatus, pseudo force presentingmethod, and program

Publication Date: 2025.12.04 NIPPON TELEGRAPH & TELEPHONE CORP

AI summary

A pseudo force sense is implemented without changing the movement trajectory or size of a cursor. A pseudo force sense presentation device for this purpose includes a cursor detection unit, a cursor update unit, and a video display unit. The cursor detection unit detects position information of a cursor as an image displayed on the video display unit for a user to operate a device. The cursor update unit continuously changes and updates the image of the cursor on the basis of the position information. The video display unit presents the cursor whose image has been updated to the user according to the position information.