Camera Shutter Press Recognition Using Age-Based Duration Thresholds

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Solution Overview

Problem

Existing touchscreen input methods struggle to accurately differentiate between short and long press operations, leading to incorrect responses and reduced user input efficiency due to varying user interpretations of press durations.

Innovation Solution

Calculating a pressing duration threshold value specific to each user to accurately recognize whether an input is a short or long press, enabling precise response from the electronic device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a fixed pressing duration threshold is used to differentiate short press and long press operations, then the device structure remains simple, but different users with different duration understandings cause incorrect operation recognition

Engineering Contradiction:
Improveoperation recognition accuracyVSAvoidthreshold calculation mechanism complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The pressing duration threshold is transformed from a fixed value to a dynamic value that adapts to each user's characteristics. The system calculates and stores individual thresholds based on user behavior patterns, allowing the threshold to change according to the specific user performing the operation, thereby improving recognition accuracy without requiring complex hardware modifications

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system implements a feedback mechanism where user pressing operations are continuously monitored and analyzed. Based on the accumulated data from multiple users' operations, the system adjusts and optimizes the pressing duration thresholds for each user, creating a closed-loop system that improves accuracy over time through learned user behaviors

Inventive Principle:
Principle #23Feedback

2Productivity

If the device uses traditional touchscreen input recognition, then the input method remains simple, but users experience reduced input efficiency due to incorrect operation recognition

Engineering Contradiction:
Improveuser input efficiencyVSAvoidpressing operation recognition accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The system performs preliminary calculations to determine personalized pressing duration thresholds before users perform operations. By pre-calculating and storing user-specific thresholds based on initial observation periods or default user profiles, the system is already prepared with accurate recognition criteria when users interact, preventing incorrect recognition and improving input efficiency from the start

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3982239B1Input method and electronic device
Publication Date: 2026.03.25 HUAWEI TECH CO LTD
  • EP3982239B1 patent drawingFigure 1
  • EP3982239B1 patent drawingFigure 2
  • EP3982239B1 patent drawingFigure 3A

AI summary

A photographing method is disclosed. The method is applied to an electronic device, and a camera application is installed on the electronic device. The method includes: receiving a pressing operation performed by a user on a photographing control of the camera application; and determining, based on both an age of the user and pressing duration of the pressing operation, whether to shoot one photo or continuously shoot a plurality of photos. In the method, whether the pressing operation entered by the user is a long press or a short press may be determined based on the age of the user and the pressing duration of the pressing operation, so that an intention of the user is correctly recognized, and a misoperation is avoided.