Intermittent Image Correction Data Output for Reduced Processing Load
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Solution Overview
Problem
The separation of imaging and recording units in video cameras leads to a significant increase in image correction data transmission, causing a high processing load and potential overheating, especially with high-resolution image sensors, due to the need for continuous output of correction data without knowing when the recording unit has started.
Innovation Solution
An imaging system that intermittently outputs image correction data in cycles of two or more frames, allowing the recording unit to start recording only after receiving the necessary correction data, thereby reducing the amount of data and processing load on the imaging unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the imaging unit continuously outputs image correction data to the recording unit, then the recording unit can receive necessary correction data, but the processing load and data transmission amount increase significantly
Solution Approach 1:
The imaging unit outputs image correction data periodically at predetermined intervals (e.g., every N frames) rather than continuously for every frame. This periodic transmission reduces the total amount of data transmission and processing load while ensuring the recording unit receives correction data at regular intervals sufficient for the development process.
2Ease of operation
If the imaging unit continuously outputs image correction data, then the recording unit can start recording at any time, but the amount of data transmission increases exponentially
Solution Approach 1:
Image correction data is transmitted periodically at predetermined frame intervals rather than every frame. This reduces data transmission volume while the recording unit can still start recording at any time, as correction data will be received in subsequent periodic transmissions.
Solution Approach 2:
The imaging unit outputs image correction data in advance at predetermined intervals before the recording unit may need it. This preliminary periodic output ensures data is available when recording starts while avoiding continuous transmission overhead.
3Reliability
If the imaging unit continuously processes and outputs correction data for each frame, then complete correction data is available, but the imaging apparatus temperature rises due to high processing load
Solution Approach 1:
The imaging unit processes and outputs correction data periodically rather than continuously for each frame. This reduces the processing load and thermal generation while maintaining correction data availability at intervals sufficient for the development process.
Solution Approach 2:
The patent extracts only the necessary correction data at periodic intervals rather than processing and transmitting all possible correction data continuously. This selective periodic extraction reduces processing load and temperature while maintaining data completeness for development purposes.
4Loss of information
If the imaging unit outputs correction data for every frame, then no data is lost, but the separation configuration becomes impractical due to excessive data transmission
Solution Approach 1:
Correction data is transmitted periodically at predetermined intervals rather than every frame. This periodic transmission reduces data transmission volume to feasible levels while ensuring no critical information is lost for the development process.
Solution Approach 2:
Instead of transmitting correction data for every single frame (excessive action), the system transmits correction data at periodic intervals (partial action). This partial transmission is sufficient for the development process while making the separated configuration practically feasible.
Data Source
AI summary
An imaging apparatus causes an external output I/F to output raw image data to an external recording device and output image correction data to the external recording device every plurality of frames. The external recording device records the image data from the imaging apparatus in a moving image file in a recording medium and records the image correction data in a correction data file in the recording medium.