Dual Camera Resolution Management for Power and Startup Optimization
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Solution Overview
Problem
Dual camera devices face challenges in minimizing power consumption and reducing camera startup delays when simultaneously recording pictures from multiple cameras, as maintaining high resolution in all cameras leads to excessive current consumption and prolonged startup times.
Innovation Solution
The method involves downscaling the resolution of a camera in a wait state to a lower resolution, allowing it to remain powered while reducing power consumption and eliminating startup delays by previewing and recording in a Picture In Picture (PIP) mode, and restoring the resolution when necessary for dual recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera remains in high resolution operation state, then image quality is maintained, but power consumption increases excessively
Solution Approach 1:
The patent applies dynamics by making the camera resolution adjustable between high and low states. The camera operates at high resolution when needed for quality capture, then transitions to low resolution during wait states to reduce power consumption. This dynamic adjustment resolves the contradiction between maintaining image quality and reducing energy usage.
Solution Approach 2:
The patent changes the resolution parameter of the camera based on operational state. When the camera is in a wait state, its resolution is changed from high to low to minimize power consumption. When dual recording is activated, the resolution is restored to high. This parameter change enables the system to balance between image quality and power consumption.
2Use of energy by moving object
If a camera is turned off to save power, then power consumption is reduced, but startup delay occurs
Solution Approach 1:
The patent applies preliminary action by keeping the camera in a low-resolution wait state rather than completely turning it off. This preliminary maintenance of the camera in a partially active state eliminates startup delays when dual recording is needed, while still significantly reducing power consumption compared to high-resolution operation.
Solution Approach 2:
The patent uses dynamics by implementing a wait state that is neither fully off nor fully on. The camera remains in a dynamic low-resolution state that allows rapid activation to high resolution when needed, avoiding the startup delay problem while maintaining power savings.
3Measurement precision
If both cameras operate at high resolution simultaneously, then recording quality is optimized, but device complexity and power management difficulty increase
Solution Approach 1:
The patent applies segmentation by dividing the camera operation into distinct states: high-resolution operation state and low-resolution wait state. This segmentation allows the system to manage power consumption and complexity by treating cameras differently based on their operational requirements, simplifying power management while maintaining recording quality when needed.
Data Source
AI summary
A method and an apparatus for dual recording shooting in an electronic device including a dual camera are provided. The method includes acquiring a first picture from a first camera that is in an operation state, acquiring a second picture from a second camera that is in a wait state, outputting the first picture at a first resolution, downscaling the second picture to a second resolution, outputting the second picture downscaled to the second resolution, and synthesizing the first picture and the second picture that is downscaled to the second resolution and previewing the synthesized result, using a Picture In Picture (PIP) function and, when a dual recording start instruction event occurs, restoring the second picture that is downscaled to the second resolution to a previous resolution, outputting the second picture restored to the previous resolution, synthesizing the first picture and the restored second picture, and recording the synthesized result.