Multi-Camera Exposure Synchronization for Consistent Image Capture

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional electronic devices with multiple camera lenses struggle with inconsistent exposure and white balance across images captured by different lenses, leading to suboptimal image coordination.

Innovation Solution

A method for synchronously adjusting exposure parameters of multiple camera lenses in response to user interactions, ensuring consistent exposure and white balance across images captured by different lenses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If exposure parameters are adjusted separately for each camera lens, then individual lens exposure control is achieved, but image coordination and consistency across multiple lenses deteriorates

Engineering Contradiction:
Improveindividual exposure controlVSAvoidimage coordination consistency
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent merges the exposure control of multiple camera lenses into a unified system. When exposure is adjusted for one lens, the same adjustment is automatically applied to all other lenses, ensuring consistent exposure across all images while maintaining individual lens functionality. This resolves the contradiction by combining control mechanisms rather than treating each lens independently.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The exposure adjustment mechanism is designed to serve multiple camera lenses simultaneously. A single exposure parameter setting becomes universal across all lenses, allowing one control operation to affect multiple imaging components. This multi-functionality approach maintains image coordination while preserving ease of operation.

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

2Adaptability or versatility

If multiple camera lenses are used simultaneously for diversified shooting, then shooting versatility is improved, but exposure and white balance consistency across images deteriorates

Engineering Contradiction:
Improveshooting versatilityVSAvoidexposure consistency
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent combines exposure and white balance parameters into a synchronized adjustment system across multiple lenses. When a user adjusts exposure or white balance for one lens, the same parameters are automatically updated for all other lenses, ensuring consistent image quality while supporting diversified shooting scenarios with multiple lenses.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system changes exposure and white balance parameters in a coordinated manner across all camera lenses. By linking parameter adjustments between lenses, the system maintains mathematical consistency in imaging parameters, resolving the contradiction between versatility and consistency.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If separate adjustment of exposure parameters for each camera lens is performed, then individual lens optimization is achieved, but overall image quality and coordination deteriorates

Engineering Contradiction:
Improveindividual lens optimizationVSAvoidoverall image coordination
Core Design Contradiction:
Measurement precisionVSManufacturing precision

Solution Approach 1:

The patent merges individual lens exposure control with overall image coordination by implementing a linked adjustment system. Each lens can be optimized individually, but adjustments automatically propagate to other lenses, ensuring that individual optimization does not compromise overall image coordination and consistency.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4387258B1Photographing method and electronic device
Publication Date: 2026.02.11 HONOR DEVICE CO LTD
  • EP4387258B1 patent drawingFigure 1A
  • EP4387258B1 patent drawingFigure 1B
  • EP4387258B1 patent drawingFigure 1C

AI summary

Embodiments of this application relating to the field of photo-taking technologies, and provide a shooting method and an electronic device, to synchronously increase or decrease an exposure for capturing images by a plurality of camera lenses when the plurality of camera lenses are used to perform shooting. The method is applied to an electronic device including a first camera lens and a second camera lens. The electronic device displays a first interface. The first interface includes a first image captured by the first camera lens and a second image captured by the second camera lens. The electronic device displays a second interface in response to the first operation performed on the second image. The second interface includes a third image captured by the first camera lens and a fourth image captured by the second camera lens. An exposure of the third image is higher than an exposure of the first image, and an exposure of the fourth image is higher than an exposure of the second image. Alternatively, an exposure of the third image is lower than an exposure of the second image, and an exposure of the fourth image is lower than the exposure of the second image.