Digital Camera Pulse Phase Adjustment for Fast Recalibration
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Solution Overview
Problem
In digital cameras, accurately adjusting the phase of pulses driving imaging elements is challenging, especially when the system or imaging element is changed, leading to inefficiencies and low accuracy in phase adjustment.
Innovation Solution
A phase adjustment device that includes an intended-usage judger, selector, phase adjuster, dispersion calculator, and timing adjuster, which automatically adjusts the phase of pulses based on signal characteristics and usage conditions, reducing the need for manual intervention and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual phase adjustment by technician is used, then phase adjustment accuracy can be achieved, but adjustment time is long and reconfiguration is difficult when system or imaging element is changed
Solution Approach 1:
The system automatically performs phase adjustment without requiring technician intervention. The phase adjustment unit autonomously measures signal characteristics, calculates optimal phases, and adjusts pulse phases based on manufacturing variability data, enabling the system to self-correct phase deviations when imaging elements are replaced or systems are reconfigured.
Solution Approach 2:
Phase adjustment parameters and manufacturing variability data are pre-measured and stored in memory during the manufacturing process. When the system needs phase adjustment, it retrieves these pre-prepared data and applies them immediately, eliminating the need for time-consuming manual measurement and adjustment procedures.
2Productivity
If conventional phase adjustment method is used, then all pulses are adjusted uniformly, but adjustment accuracy is insufficient because individual pulse characteristics are not considered
Solution Approach 1:
The system applies different phase adjustment strategies to different pulse types based on their specific characteristics. The phase adjustment unit selectively adjusts phases of drive pulses, sampling pulses, and transfer pulses according to their individual signal characteristics and functional requirements, rather than applying a uniform adjustment to all pulses.
Solution Approach 2:
The phase adjustment process is divided into separate measurement and adjustment stages for different pulse types. The system measures signal characteristics for each pulse type individually and applies targeted phase corrections, segmenting the overall adjustment process into manageable, optimization-specific sub-tasks.
3Adaptability or versatility
If imaging element is exchanged or system is changed, then system flexibility is improved, but phase readjustment becomes necessary and time-consuming
Solution Approach 1:
The system automatically detects when an imaging element replacement or system change occurs and autonomously performs phase readjustment using stored manufacturing variability data. The phase adjustment unit retrieves appropriate calibration data and applies corrections without requiring technician intervention, enabling rapid system reconfiguration.
Solution Approach 2:
Manufacturing variability data and optimal phase parameters are pre-measured and stored for different imaging element types during the manufacturing process. When elements are exchanged, the system retrieves the pre-prepared data corresponding to the new element type and applies the appropriate phase adjustments immediately, eliminating the need for time-consuming on-site calibration.
Data Source
AI summary
An intended-usage judger judges an intended usage of an inputted digital imaging signal. A selector selects one or a plurality of signals to be inspected from a group of signals constituting the digital imaging signal based on a result of the judgment by the intended-usage judger. A phase adjuster adjusts a phase of a pulse used when the digital imaging signal is picked up based on an output state of the signal to be inspected.