Video Recording Auto-Start via Viewfinder Navigation

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Solution Overview

Problem

Mobile devices often fail to record videos when users forget to tap the recording start button on the video recording viewfinder screen, leading to poor human-machine interaction performance and missed recordings.

Innovation Solution

A shooting control method that automatically starts video recording when the user navigates to the video recording viewfinder screen, with an option to save or delete the recorded video upon user confirmation, even if the recording start button is not tapped.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mobile phone waits for user confirmation before recording video, then recording accuracy is improved, but user operation convenience deteriorates

Engineering Contradiction:
Improverecording accuracyVSAvoiduser operation convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system performs preliminary actions by automatically starting video recording when the video recording viewfinder screen is displayed, without waiting for explicit user confirmation. This preliminary action ensures that important moments are not missed while still allowing users to stop recording when desired, thus resolving the contradiction between recording accuracy and operation convenience.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the mobile phone automatically records video without confirmation, then user operation convenience is improved, but risk of unwanted recording increases

Engineering Contradiction:
Improveuser operation convenienceVSAvoidrisk of unwanted recording
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system implements feedback by continuously monitoring user operations during automatic recording and responding appropriately. When users perform specific actions (such as switching to photo mode or exiting the camera app), the system provides feedback by stopping recording and offering confirmation dialogs, thus preventing unwanted recordings while maintaining automatic recording benefits.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If the mobile phone requires explicit start button tap, then recording precision is improved, but productivity deteriorates

Engineering Contradiction:
Improverecording precisionVSAvoidrecording efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system performs preliminary recording action automatically when the video recording screen is displayed, eliminating the need for explicit start button taps. This preliminary action ensures no recording moments are lost while maintaining precision through configurable automatic start conditions and user-controllable stop options, thus resolving the contradiction between recording precision and efficiency.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3790271B1Photographing control method and terminal
Publication Date: 2023.10.25 HUAWEI TECH CO LTD
  • EP3790271B1 patent drawingFigure 1(a)~1(b)
  • EP3790271B1 patent drawingFigure 2
  • EP3790271B1 patent drawingFigure 3

AI summary

Embodiments of this application disclose a shooting control method and a terminal and relate to the field of terminal technologies. Even if a user forgets to tap a recording start button on a video recording viewfinder screen, the terminal can still record a video, thereby improving human-machine interaction performance of the terminal. A specific solution includes: displaying, by a terminal, a first screen that is not a video recording viewfinder screen; receiving, by the terminal, a first operation of a user on the first screen; in response to the first operation, displaying a video recording viewfinder screen (namely, a second screen), starting to record a first video, and buffering the recorded first video; if the terminal detects a second operation, in response to the detected second operation, stopping, by the terminal, video recording, and displaying a third screen used to prompt the user to determine whether to save the first video; and saving or deleting the first video according to a selection operation of the user on the third screen. The second screen includes a recording start button, and the recording start button is used to trigger the terminal to start video recording.