Calibration Control Unit for Position Detecting Device

Solution Overview

Problem

Existing position detecting devices face challenges in accurately calibrating manipulation positions due to external influences like light, and user-dependent methods can be cumbersome, making it difficult to execute calibration efficiently according to user intentions.

Innovation Solution

A position detecting device with a detection unit and calibration control unit that captures images of a manipulation surface, allowing for both automatic and manual calibration methods, enabling users to select and execute calibrations based on captured images, and providing a user interface to choose between calibration types, thereby optimizing calibration time and accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If automatic calibration is performed by capturing an image displayed on the manipulation surface, then the calibration process does not burden the user, but the calibration is easily influenced by outside light or the like, and thus is difficult to attain high accuracy

Engineering Contradiction:

Improvecalibration operation simplicityVSAvoidmanipulation position detection accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The calibration process is segmented into two distinct types: first calibration for the first indicator (e.g., finger) and second calibration for the second indicator (e.g., stylus). This segmentation allows each indicator to have its own optimized calibration method, where the first indicator uses automatic calibration for simplicity and the second indicator uses manual calibration for high accuracy, thereby resolving the contradiction between ease of operation and measurement precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically adapts the calibration method based on the indicator type being used. When the first indicator is detected, automatic calibration is performed; when the second indicator is detected, manual calibration is performed. This dynamic adaptation allows the system to optimize both ease of operation and measurement precision according to the specific usage scenario.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If calibration of allowing the user to perform indication manipulation is performed, then the manipulation is complicated, but the calibration is able to be performed with high accuracy

Engineering Contradiction:

Improvemanipulation position detection accuracyVSAvoidcalibration operation simplicity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The calibration process is segmented into two distinct types: first calibration for the first indicator (e.g., finger) and second calibration for the second indicator (e.g., stylus). This segmentation allows each indicator to have its own optimized calibration method, where the first indicator uses automatic calibration for simplicity and the second indicator uses manual calibration for high accuracy, thereby resolving the contradiction between ease of operation and measurement precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different calibration methods are applied to different indicators based on their specific characteristics. The first indicator (finger) uses automatic calibration with simple image capture, while the second indicator (stylus) uses manual calibration with precise point indication. This local quality approach ensures that each indicator receives the most appropriate calibration method for its specific needs, achieving high accuracy where required without unnecessary complexity elsewhere.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If multiple types of calibration are executed, then the system can adapt to different indicator types, but the calibration time increases

Engineering Contradiction:

Improvecalibration method adaptabilityVSAvoidcalibration time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The calibration process is segmented into two distinct types: first calibration for the first indicator (e.g., finger) and second calibration for the second indicator (e.g., stylus). This segmentation allows each indicator to have its own optimized calibration method, where the first indicator uses automatic calibration for simplicity and the second indicator uses manual calibration for high accuracy, thereby resolving the contradiction between ease of operation and measurement precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system performs only the necessary calibration based on the indicator type detected. If only the first indicator is used, only the first calibration is executed. If the second indicator is used, the system can execute either the first calibration alone or both first and second calibrations depending on user selection. This partial action approach avoids unnecessary calibration steps, reducing calibration time while maintaining adaptability to different indicator types.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9753580B2Position detecting device, position detecting system, and controlling method of position detecting device

Publication Date: 2017.09.05 SEIKO EPSON CORP

AI summary

A projector includes a position detection unit and a calibration control unit. The calibration control unit executes first calibration relevant to a manipulation position of an indicator performing a manipulation on a screen, and second calibration relevant to a manipulation position of an indicator performing a manipulation on the screen. Then, the calibration control unit provides a user interface allowing indication of whether or not the second calibration is to be executed after the first calibration is executed.