Image Display Control Apparatus Mode Switching Distortion
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Solution Overview
Problem
There is a time lag in image display in imaging apparatuses due to the delay between capturing an image and its display on LCD or EVF, which can result in distorted images when switching between still and moving image modes, and existing solutions either lengthen the display lag or cause image distortion.
Innovation Solution
An image display control apparatus that includes image data supply means, mask data supply means, and drawing means to sequentially draw pixels with mask data as pixel values after detecting an imaging instruction, allowing for natural transition and preventing distortion by masking image data during mode switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If image data is read from the image memory while the data is being written into the image memory to reduce display time lag, then the display speed is improved, but the image data becomes distorted
Solution Approach 1:
The patent applies preliminary action by detecting the imaging instruction acceptance signal before reading image data from the image memory. When the signal is detected as valid, the system preemptively switches to mask data supply, preventing distorted image data from being read and displayed. This advance detection and switching mechanism ensures that no distorted data reaches the display output.
Solution Approach 2:
The patent introduces an intermediary mechanism through the imaging instruction acceptance signal and the switching control logic. This intermediary detects the state of image data writing and mediates between the image data supply means and the drawing means, switching to mask data when writing is in progress. This intermediary layer prevents direct reading of distorted data while maintaining continuous display operation.
2Manufacturing precision
If image data is read from the image memory after completion of writing to prevent distortion, then image quality is maintained, but the display time lag increases
Solution Approach 1:
The mask data serves as an intermediary that fills the time gap between image capture and display. When image data is being written to the memory, mask data is supplied to the drawing means, maintaining continuous display operation without showing distorted data. This intermediary solution eliminates both the distortion problem and the time lag penalty.
Solution Approach 2:
The patent discards distorted image data by switching to mask data supply when writing is in progress, and recovers normal operation by switching back to image data supply after writing completes. This discarding and recovering mechanism ensures that only valid, undistorted image data is displayed while maintaining continuous display throughput.
3Adaptability or versatility
If the operation mode of the image sensor is switched to change transfer rate, then the adaptability to different modes is improved, but image distortion occurs during switching
Solution Approach 1:
The system performs preliminary detection of the imaging instruction acceptance signal to identify when mode switching is about to occur. By detecting this signal in advance, the system can preemptively switch to mask data supply before the actual mode change causes distortion, allowing seamless transitions between still and moving image modes without displaying distorted data.
Solution Approach 2:
The imaging instruction acceptance signal acts as an intermediary indicator that triggers the switching mechanism. When this signal changes state, it mediates the transition between image data supply and mask data supply, ensuring that mode switching occurs smoothly without producing distorted output. The intermediary signal coordinates the timing of supply mode changes with the underlying data writing process.
Data Source
AI summary
An image display control apparatus includes an image data supply section that supplies an image composed of a plurality of pixels arranged two-dimensionally in a matrix form as captured image data, a mask data supply section that supplies mask data for masking the image data, an imaging instruction accepting section that validates an imaging instruction acceptance signal when accepting an operation input corresponding to an imaging instruction, and a drawing section that sequentially draws the respective pixels, each having a pixel value, in the image data every predetermined period. When detecting that the imaging instruction acceptance signal is valid, the drawing section draws the pixels such that each pixel has a value including the mask data as the pixel value after the detection.