Dual-Camera Pretrigger Shooting for High Frame Rate Capture

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Solution Overview

Problem

Existing electronic devices face inefficiencies in power consumption and file size when using high-frame-rate recording modes for slow-motion or continuous shooting, as they often adjust recording frame rates too late, leading to poor shooting effects and unnecessary power consumption.

Innovation Solution

Employing two cameras with different shooting ranges, where a first camera with a larger range detects the entry of a target object and triggers a second camera to switch to high-frame-rate or continuous-shooting mode before the object enters its smaller range, optimizing frame rates and reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the second camera uses high-frame-rate recording mode or continuous shooting function, then the shooting quality of moving objects is improved, but the power consumption and file size increase significantly

Engineering Contradiction:

Improveshooting qualityVSAvoidpower consumption

Core Design Contradiction:

Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The first camera with larger shooting range is used to detect the target object in advance before it enters the shooting range of the second camera. When the target is detected by the first camera, the second camera proactively switches to high-frame-rate recording mode or continuous shooting function, ensuring that the high-quality recording starts before the target enters the second camera's range, thus capturing the entire motion process with high quality while avoiding unnecessary prolonged high-frame-rate recording.

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If the recording frame rate is adjusted late, then the response time is reduced, but the shooting effect deteriorates and power consumption increases

Engineering Contradiction:

Improveresponse timeVSAvoidshooting effect

Core Design Contradiction:

Loss of timeVSManufacturing precision

Solution Approach 1:

The first camera acts as an intermediary detection device with a larger shooting range that triggers the second camera's recording mode changes. When the first camera detects the target object entering its shooting range, it prompts the second camera to switch to high-frame-rate recording mode or continuous shooting function in advance, ensuring timely response and high-quality capture without the need for the second camera to constantly monitor and react on its own.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Manufacturing precision

If the second camera constantly operates in high-frame-rate mode to ensure capture of moving objects, then the shooting quality is maintained, but the power consumption and file size increase unnecessarily

Engineering Contradiction:

Improveshooting qualityVSAvoidfile size

Core Design Contradiction:

Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The system uses the first camera to detect the target object in advance and proactively triggers the second camera to switch to high-frame-rate recording mode or continuous shooting function only when needed. This ensures that high-quality recording is performed only during the actual shooting period, avoiding unnecessary prolonged recording and reducing the generation of unnecessary large files while maintaining high shooting quality when the target is present.

Inventive Principle:

Principle #10Preliminary action

4Area of stationary object

If a single camera with large shooting range is used, then the detection range is improved, but the shooting quality of distant objects deteriorates

Engineering Contradiction:

Improvedetection rangeVSAvoidshooting quality

Core Design Contradiction:

Area of stationary objectVSManufacturing precision

Solution Approach 1:

The system divides the detection and shooting function into two cameras with different characteristics: the first camera has a larger shooting range for early target detection, while the second camera has a smaller shooting range but higher shooting quality. The first camera segments the task of detecting when the target enters the range, and the second camera segments the task of high-quality recording, allowing each component to optimize its specific function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system adds the dimension of time by using sequential detection: the first camera detects the target in advance before it enters the second camera's range, creating a time buffer that allows the second camera to switch modes proactively. This temporal dimension allows the system to combine the advantages of both cameras - the first camera's large range and the second camera's high quality - without requiring both to operate simultaneously at full capacity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12495206B2Shooting method and apparatus, and electronic device

Publication Date: 2025.12.09 VIVO MOBILE COMM CO LTD

AI summary

A shooting method includes: when a target shooting object has entered a shooting range of a first camera but has not entered a shooting range of a second camera, starting a target shooting function of the second camera; and when the target shooting object has entered the shooting range of the second camera, obtaining an image of the target shooting object captured by the second camera using the target shooting function; where the shooting range of the first camera is larger than the shooting range of the second camera, and the shooting range of the first camera includes the shooting range of the second camera; and the target shooting function includes a continuous-shooting function or a function of recording at a first recording frame rate.