Dual Camera Luminance Switching for Seamless Operation

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Solution Overview

Problem

Users of portable electronic devices with multiple cameras face inconvenience in switching between front and rear cameras, as they need to navigate through menus to do so, lacking an efficient and user-friendly method for camera interchanging.

Innovation Solution

An electronic device with a processing module and memory that automatically switches between primary and secondary cameras based on ambient luminance detection, using preset brightness and shading values to determine when to interchange cameras, ensuring only one camera is operational at a time and switching when luminance falls below set thresholds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If users manually switch between multiple cameras through menu commands, then camera switching is possible, but user convenience deteriorates due to complex operation steps

Engineering Contradiction:
Improvecamera switching operationVSAvoidtime for menu navigation
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system automatically detects ambient luminance and determines which camera should be active without user intervention. The processing module continuously monitors luminance conditions and autonomously switches between primary and secondary cameras based on preset thresholds, eliminating the need for manual menu navigation and making the system self-regulating according to environmental conditions.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces the mechanical interaction of manual menu navigation with an automated sensing and control system. The light sensor detects ambient luminance and triggers automatic camera switching through processing logic, substituting the manual mechanical operation sequence with an automated optoelectronic control mechanism that responds dynamically to environmental changes.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If automatic camera switching based on luminance is implemented, then user convenience is improved, but device complexity increases due to additional sensors and control logic

Engineering Contradiction:
Improvecamera switching operationVSAvoidcontrol system structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The light sensor serves multiple functions: it monitors ambient luminance for camera switching decisions, tracks luminance changes over time periods, and provides input for the processing module's automatic determination logic. This multi-functional use of a single component reduces the need for additional dedicated sensors while achieving automated camera control.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the luminance detection function, time period measurement, and camera switching decision logic into an integrated control system. The processing module merges multiple control functions (luminance threshold comparison, time-based monitoring, camera activation/deactivation) into a unified automated control mechanism, reducing overall system complexity despite adding automation capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Provides a seamless and user-friendly camera switching experience by automatically determining the best camera to use based on ambient conditions, enhancing usability and reducing the need for manual menu navigation.

Implementation Method 1

a light sensor (101, 201) is used to detect an ambient luminance of the camera at a preset time

Methodology Applied
Scientific EffectLuminance detection: Photoelectric Effect

Data Source

PatentUS9338338B2Electronic device and method of camera control
Publication Date: 2016.05.10 SHENZHEN FULIAN FUGUI PRECISION INDUSTRY CO LTD
  • US9338338B2 patent drawing
  • US9338338B2 patent drawing
  • US9338338B2 patent drawing

AI summary

An electronic device includes two cameras each with a light sensor. The electronic device uses the light sensor of one of the two cameras which is operational to detect an ambient luminance, and determines if the detected ambient luminance is less than a preset shading value. In response to the detected ambient luminance being less than the preset shading value, the electronic device interchanges the cameras to work. That is, the electronic device powers down the one of the two cameras which is operational and activating the other one of the two cameras.