Dual Touchpad Input Control for Combined Operation Accuracy

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Solution Overview

Problem

Existing input devices with multiple touchpads face issues with erroneous operations due to misinterpretation of simultaneous or sequential use of different touchpads, leading to unintended actions on the information processing apparatus.

Innovation Solution

The input device includes a first and second touchpad, with circuitry that assigns and maintains specific codes for single and combined operations, ensuring that when a single operation is performed on one touchpad while another code is active, the existing code is not overridden, thereby preventing erroneous actions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple touchpads are provided to enhance input versatility, then the adaptability or versatility is improved, but erroneous operations occur due to misinterpretation of simultaneous or sequential use of different touchpads

Engineering Contradiction:
Improveinput versatilityVSAvoidoperation accuracy
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the control logic by separately managing single-touchpad operations and combined-multi-touchpad operations. The circuitry determines whether detected operations constitute a combined operation involving multiple touchpads, and selectively outputs or suppresses codes based on this determination, thereby preventing erroneous operations while preserving input versatility

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The circuitry acts as an intermediary between the multiple touchpads and the information processing apparatus. It intercepts and analyzes operation signals from different touchpads, determines whether they constitute a combined operation, and selectively outputs or suppresses corresponding codes to prevent erroneous operations

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If codes are output for combined operations on multiple touchpads, then the functionality is enhanced, but erroneous actions occur when operations on different touchpads are misinterpreted

Engineering Contradiction:
Improveoperation functionalityVSAvoiderroneous actions
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The circuitry performs preliminary analysis of operation signals to determine whether they constitute a valid combined operation before outputting codes. By preemptively identifying and suppressing codes for misinterpreted operations, the system prevents erroneous actions from occurring in the first place

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The circuitry continuously monitors operations on multiple touchpads and provides feedback by selectively suppressing codes that would result in erroneous actions. This feedback mechanism ensures that only valid combined operations trigger appropriate responses while preventing misinterpretation errors

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12585348B2Input device, control method, and non-transitory recording medium
Publication Date: 2026.03.24 PFU LTD
  • US12585348B2 patent drawing
  • US12585348B2 patent drawing
  • US12585348B2 patent drawing

AI summary

An input device includes a first touchpad, a second touchpad, and circuitry. The circuitry outputs a first code assigned to a single operation on the first touchpad when the single operation is performed on the first touchpad, and a second code assigned to a combined operation when the combined operation is performed. The combined operation is a combination of operations on both the first touchpad and the second touchpad. When the single operation is performed on the second touchpad while the circuitry is outputting the first code, the circuitry continues to output the first code without outputting the second code, or when the operation on the second touchpad ends and the operation on the first touchpad continues while the circuitry is outputting the second code, the circuitry continues to output the second code without outputting the first code.