Pre-processing Unit for Immediate Focus Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic devices are unable to effectively and immediately adjust focus when a subject or scene becomes out of focus due to movement, leading to suboptimal image quality during picture capture or video recording.
Innovation Solution
An electronic device comprising an image sensor unit, a pre-processing unit, and an image processing unit that captures and processes image frames to provide focus information, determining focus change conditions and adjusting the lens module accordingly to maintain optimal focus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional electronic devices use traditional focus adjustment methods, then the device structure remains simple, but the focus adjustment is not immediate and effective when subject or scene movement causes out-of-focus conditions
Solution Approach 1:
The patent applies preliminary action by pre-processing captured image frames to extract focus information before final image processing. The pre-processing unit analyzes image frames to determine focus states and generates focus information that is stored and used for immediate focus adjustment when needed, rather than waiting for focus issues to occur
Solution Approach 2:
The patent introduces an intermediary mechanism by adding a dedicated pre-processing unit that acts as a mediator between the image sensor unit and the image processing unit. This intermediate layer extracts and prepares focus information in advance, enabling faster response to focus changes without significantly complicating the overall device structure
2Loss of time
If the electronic device processes image frames in real-time to detect focus changes, then the focus adjustment becomes immediate, but the processing time and computational load increase
Solution Approach 1:
The patent reduces processing time by performing preliminary focus analysis on captured image frames before they reach the main image processing unit. The pre-processing unit extracts focus information in advance, so when focus adjustment is needed, the system can immediately act on pre-computed data rather than analyzing frames in real-time during critical moments
Solution Approach 2:
The patent applies partial action by having the pre-processing unit perform only the specific task of extracting focus information from image frames, rather than performing complete image processing. This selective partial processing reduces computational load and energy consumption while still achieving immediate focus detection when needed
Data Source
AI summary
An electronic device and a focus adjustment method thereof are provided. The electronic device and the focus adjustment method thereof pre-process the image frames captured to provide focus information of the image frames and adjust the focus according to the focus information. Therefore, as the subject followed or the current scene is out of focus in response to movement of the electronic device, the present invention can immediately obtain the change of focus via the focus information and effectively adjust the focus according to the focus information.