Dual Camera Preview Power Management via Wait State Activation
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Solution Overview
Problem
Dual-camera electronic devices face challenges in minimizing power consumption and camera startup time delays during dual picture recording, as both cameras are typically kept active or turned on and off simultaneously, leading to excessive current consumption and delayed startup when one camera is in a wait state.
Innovation Solution
The method involves starting the first camera for preview and recording, while keeping the second camera in a wait state until a specific input (such as a touch, voice instruction, or motion) is detected, allowing the second camera to be activated and its picture displayed and recorded separately or simultaneously with the first camera's picture using a Picture In Picture (PIP) function, thereby minimizing power usage and startup delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If both cameras are kept active to enable quick switching and dual picture recording, then camera startup time is reduced, but power consumption increases
Solution Approach 1:
The system maintains the first camera in a continuously active state with preview functionality, while keeping the second camera in a wait state. When dual picture recording is needed, the second camera is activated. This preliminary arrangement of camera states allows quick switching without requiring both cameras to be continuously active, thus reducing power consumption while maintaining responsive startup time.
Solution Approach 2:
The system dynamically adjusts the operational state of cameras based on user input and recording mode. The first camera transitions between active and wait states, while the second camera transitions from wait to active state when needed. This dynamic state management allows the system to optimize power consumption by keeping only necessary cameras active at any given time, while maintaining the capability for quick dual picture recording startup.
2Loss of time
If the second camera is kept in operation state for dual picture recording, then startup time is minimized, but current consumption increases excessively
Solution Approach 1:
The system prepares the first camera in advance by maintaining it in an active state with preview functionality, while the second camera remains in a low-power wait state. When dual picture recording is initiated through user input, the second camera is activated. This preliminary preparation allows the system to minimize startup time for the first camera while avoiding excessive current consumption by not keeping the second camera continuously active.
Solution Approach 2:
The system changes the operational parameters of cameras based on recording mode. The first camera operates with adjusted parameters (active state with preview) during normal operation, while the second camera operates in a wait state with reduced power consumption. When dual picture recording is needed, parameters are changed to activate the second camera. This parameter adjustment allows the system to balance startup time and current consumption effectively.
3Productivity
If both cameras are activated simultaneously for dual picture recording, then recording capability is improved, but power consumption and startup delay increase
Solution Approach 1:
The system maintains the first camera in an active state with preview functionality before dual picture recording is initiated. When user input triggers dual picture recording mode, the second camera is activated and both cameras record simultaneously. This preliminary activation of the first camera ensures that dual picture recording capability is ready when needed, while avoiding the need to keep both cameras continuously active, thus reducing power consumption.
Solution Approach 2:
The system dynamically manages camera activation based on recording mode. During normal operation, only the first camera is active. When dual picture recording is triggered, the system transitions to a state where both cameras are active. This dynamic adjustment allows the system to maintain dual picture recording capability when needed while minimizing power consumption during normal operation by keeping only one camera active.
Data Source
AI summary
A method in an electronic device, the method comprising displaying a first picture acquired from a first image sensor on a display functionally connected to the electronic device, and displaying a second picture acquired from a second image sensor on display, wherein the first picture and the second pictures are simultaneously displayed as a preview image on the display. An electronic device for processing an image comprises at least one memory configured to store image information and an image processing module, and at least one processor configured to execute the image processing module, wherein the image processing module comprises instructions of displaying a first picture acquired from a first image sensor on a display functionally connected to the electronic device, and according to a first input, displaying a second picture acquired from a second image sensor on the display, wherein the first picture and the second picture are simultaneously displayed as a preview image on the display.