Dynamic 3D Reference Frame for Cursor Stagnation in Pointing Devices

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Solution Overview

Problem

Conventional multimedia interactive systems face limitations in the movement, rotation, and region restrictions of pointing devices, leading to inconveniences such as cursor stagnation and the need for reset/recalibration when the pointing device exceeds maximum limits.

Innovation Solution

The system employs a pointing device with a pointing module, control module, and updating module that detects shifts and updates the initial point in a 3D spatial reference frame, allowing the cursor to move proportionally and adjust the reference frame based on user input or exceeding borders, preventing cursor stagnation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the pointing device moves beyond the border of the display device, then the pointing device can continue to move freely, but the cursor stops at the border and cannot move accordingly

Engineering Contradiction:

Improvepointing device movement freedomVSAvoidcursor movement reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The reference frame is made dynamic by automatically updating its initial position when the cursor reaches the display border. Instead of a fixed reference frame that causes cursor stagnation, the system dynamically adjusts the reference frame's origin point to maintain continuous cursor responsiveness to pointing device movements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of the reference frame's initial position dynamically. When the cursor reaches the border, the initial position parameter of the reference frame is updated to a new position, allowing the pointing device to continue moving freely while the cursor remains responsive within the display area.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If the pointing device rotation angle exceeds the permissible range, then the pointing device can be oriented in any direction, but the cursor appears stationary at the border

Engineering Contradiction:

Improvepointing device orientation rangeVSAvoidcursor control responsiveness

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The reference frame dynamically adapts its orientation and position based on the pointing device's rotation. When the pointing device exceeds the permissible rotation range, the reference frame updates its initial position and orientation parameters, allowing the system to maintain cursor control responsiveness while accommodating any pointing device orientation.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If the pointing device operates beyond the permissible region, then the pointing device can be positioned anywhere in 3D space, but the cursor cannot move and reset/recalibration is needed

Engineering Contradiction:

Improvepointing device operating regionVSAvoidreset/recalibration time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system performs preliminary action by proactively updating the reference frame's initial position before the user needs to reset or recalibrate. When the cursor reaches the border or the pointing device exceeds permissible limits, the reference frame is automatically repositioned in advance, preventing cursor stagnation and eliminating the need for manual reset operations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system serves itself by automatically detecting when the reference frame needs updating and performing the update without user intervention. The border detection unit and control unit work together to self-correct the reference frame position, eliminating the need for user-initiated reset or recalibration operations.

Inventive Principle:

Principle #25Self-service

4Device complexity

If a fixed reference frame is used, then the system structure is simple, but the cursor stagnates at the border requiring recalibration

Engineering Contradiction:

Improvereference frame structureVSAvoidcursor movement continuity

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The reference frame transitions from a fixed structure to a dynamic one that can update its initial position. The border detection unit monitors cursor position, and when the border is reached, the control unit updates the reference frame's initial position parameters, maintaining cursor movement continuity while keeping the overall system structure relatively simple.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8917241B2Pointing device, operating method thereof and relative multimedia interactive system

Publication Date: 2014.12.23 CM HK LTD

AI summary

An operating method of a display device includes controlling a shift of a cursor of a user interface reference frame according to a shift of the pointing device with reference to an initial point in a 3D spatial reference frame; and updating a position of the initial point in the 3D spatial reference frame according to an updating signal. An advantage of the present invention is when the operating range is changed, reference coordinates utilized by the pointing device are appropriately adjusted, so as to lower the affect of offset, allowing the pointing device to be applied in different areas/directions without having the cursor displayed on the display device to incorrectly reflect shift of the pointing device.