Touch Control Unit Dynamic Pressing Force Logic

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Solution Overview

Problem

Existing touch panel systems require users to apply the same pressing force to execute the same operation, making it difficult to easily repeat functions associated with a previous pressing force, leading to user inconvenience.

Innovation Solution

An electronic device with a touch detection unit and pressure detection unit that allows execution of the same function with a different pressing force after a predetermined period, enabling users to execute the same function without needing the same pressing force as the previous touch operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the same pressing force is required to execute the same operation, then the function can be executed based on pressing force, but the user cannot easily repeat the operation with different pressing forces

Engineering Contradiction:
Improveease of repeating operationVSAvoidflexibility in pressing force
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system dynamically changes the requirement for pressing force based on the timing of the touch operation. Within a predetermined period after a touch operation, the same function can be executed regardless of the pressing force applied. This dynamic adjustment of the pressing force requirement based on temporal context resolves the contradiction by allowing flexible repetition of operations while maintaining the original pressing-force-based function execution model.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If pressing force is used to differentiate operation modes, then multiple functions can be executed, but erroneous function selection may occur during repeated operations

Engineering Contradiction:
Improvefunction differentiationVSAvoidfunction selection accuracy
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system uses temporal feedback to determine whether to interpret a new touch operation as a repetition of the previous function or as a new function selection. By checking whether the current touch operation occurs within a predetermined period after the previous operation, the system provides feedback-based disambiguation that prevents erroneous function selection while maintaining reliable pressing-force-based differentiation when needed.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS10884539B2Electronic device and control method thereof
Publication Date: 2021.01.05 CANON KK
  • US10884539B2 patent drawing
  • US10884539B2 patent drawing
  • US10884539B2 patent drawing

AI summary

An electronic device includes a touch detection unit that detects a touch operation executed on an operation surface, a pressure detection unit that detects a pressing force of the touch operation, and a control unit that controls executing a different function based on the detected pressing force of the touch operation when the touch operation is detected by the touch detection unit. In a case where a touch operation is detected again within a predetermined period from a previous touch operation after the control unit has controlled a function based on the pressing force to be executed based on the touch operation, the control unit controls a same function as the function executed based on the previous touch operation to be executed regardless of the pressing force.