Display Frame Multiplication for Camera Shutter Synchronization
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Solution Overview
Problem
The display apparatus experiences screen tearing and flicker phenomena when the driving frequency of the display and the shutter speed or shutter angle of the photographing apparatus are mismatched, leading to incomplete or flickering images during photography.
Innovation Solution
The display apparatus performs frame multiplication by repeatedly outputting the same frame in sections to synchronize with the shutter speed and shutter angle of the photographing apparatus, compensating the application time and amplitude of the driving signal to prevent these phenomena.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display apparatus outputs frames at a fixed driving frequency, then the display operation is simple and stable, but screen tearing and flicker phenomena occur when the shutter speed or shutter angle of the photographing apparatus changes
Solution Approach 1:
The patent applies dynamics by making the frame output frequency adaptive rather than fixed. The controller dynamically adjusts the frame output frequency based on real-time detection of the photographing apparatus's shutter speed and shutter angle, allowing the display to synchronize with varying photography parameters and eliminate screen tearing and flicker phenomena
Solution Approach 2:
The patent implements feedback through a detection unit that continuously monitors the shutter speed and shutter angle of the photographing apparatus, feeds this information back to the controller, which then adjusts the frame output frequency accordingly. This closed-loop feedback mechanism ensures the display remains synchronized with the photographing apparatus under varying conditions
2Reliability
If the display apparatus repeatedly outputs the same frame to synchronize with shutter speed and shutter angle, then screen tearing and flicker are prevented, but the time for displaying frames increases
Solution Approach 1:
The patent applies partial action by selectively repeating frames only when necessary to synchronize with the photographing apparatus's shutter cycle. Rather than continuously repeating frames, the system performs frame multiplication only during specific time intervals when synchronization is needed, thereby reducing unnecessary time consumption while maintaining image stability
3Manufacturing precision
If the display apparatus compensates for application time and amplitude of driving signals, then frame display synchronization is improved, but the control complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing compensation values for application time and amplitude in lookup tables. The controller retrieves appropriate compensation values based on the detected shutter parameters, avoiding complex real-time calculations and reducing control complexity while maintaining precise frame synchronization
Data Source
AI summary
A display apparatus is disclosed. One or more processors are configured to, by executing the one or more instructions, identify shutter speed information and shutter angle information corresponding to an photographing apparatus, identify multiplication information of a frame based on the identified shutter speed information and the identified shutter angle information, identify a driving signal of a plurality of frames displayed in each of frame sections based on multiplication information of the frame, compensate for an application time and amplitude of voltage corresponding to a driving signal of the last frame based on each of the frame sections being longer than time that the plurality of frames is displayed, and control the display to provide the last frame based on the compensated driving signal.