Digital Imaging Apparatus Phase Delay Compensation
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Solution Overview
Problem
Digital imaging apparatuses face challenges in capturing clear images due to hand-shake-induced movement, as existing image stabilization methods do not effectively compensate for phase delays in motion data across multiple sensing axes.
Innovation Solution
A digital imaging apparatus equipped with a motion sensor, a single signal conversion processor, and a controller that compensates for phase delays in motion data across multiple sensing axes by calculating and adjusting the switching timing interval, ensuring synchronized phase compensation across all axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If motion data from multiple sensing axes is processed using separate signal conversion processors, then processing accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple signal conversion processors into a single integrated processor that handles motion data from all sensing axes. The single processor sequentially processes data from different axes by switching between them, eliminating the need for multiple separate processors while maintaining processing capability through time-multiplexed operation.
Solution Approach 2:
The single signal conversion processor is designed to perform multiple functions by processing motion data from different sensing axes sequentially. It acts as a universal processor that can handle x-axis, y-axis, and z-axis data through switching mechanisms, replacing what would traditionally require multiple dedicated processors.
2Device complexity
If a single signal conversion processor is used for multiple sensing axes, then device complexity is reduced, but phase delay occurs in motion data
Solution Approach 1:
The patent applies preliminary phase delay compensation by calculating the expected phase delay for each sensing axis based on switching timing, then pre-adjusting the data before final processing. This allows the system to anticipate and correct phase issues before they affect the final output, maintaining reliability despite sequential processing.
Solution Approach 2:
The system implements feedback mechanisms where the controller monitors the switching timing and phase relationships between different sensing axes, then adjusts the switching schedule and compensation parameters accordingly. This closed-loop approach ensures phase accuracy is maintained despite the use of a single processor.
3Reliability
If the switching timing interval is reduced to minimize phase delay, then image stability is improved, but processing speed decreases
Solution Approach 1:
The patent dynamically adjusts the switching timing interval parameter based on the specific requirements of different sensing axes and operating conditions. Rather than using a fixed small interval that would slow processing, the system optimizes the interval for each axis to achieve sufficient phase alignment while maintaining efficient processing throughput.
Solution Approach 2:
The switching timing interval is made dynamic rather than static, allowing the controller to adjust the timing based on real-time conditions. The system can modify switching frequencies and intervals adaptively, enabling faster processing when phase alignment is sufficient and tighter control when stability requires it, rather than being constrained by a fixed conservative timing.
Data Source
AI summary
There is provided a digital imaging apparatus including a motion sensor configured to output motion data corresponding to a movement of a camera module from at least one sensing axis, a single signal conversion processor configured to transmit or receive the motion data at a switching timing interval, and to compensate for a phase delay due to the switching timing interval of the motion data, and a single signal conversion controller configured to control the switching timing interval of the single signal conversion processor and phase delay compensation regarding the motion data of the at least one sensing axis according to the switching timing interval.