Interchangeable Lens Camera Synchronization for Panning Assist
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Solution Overview
Problem
Conventional panning assist technologies are limited to integrated camera systems and do not effectively address blurring issues in interchangeable lens type camera systems, where motion vector detection and image stabilization control are not integrated within the same main body.
Innovation Solution
An image capture system with an interchangeable lens that includes a synchronous signal generation unit, communication units for transmitting and receiving delay times, and calculation units to determine the timing for obtaining lens information, enabling accurate panning assist by synchronizing motion vector detection and image stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional panning assist technology is used in interchangeable lens camera systems, then the system can detect motion vectors and perform image stabilization, but the detection accuracy of moving object speed deteriorates due to communication delay between camera body and lens
Solution Approach 1:
The patent applies preliminary action by measuring the communication delay time in advance between the camera body and interchangeable lens, then using this pre-measured delay value to calculate and adjust the timing of lens information acquisition. This allows the system to compensate for the time loss beforehand, ensuring that motion vector detection and image stabilization are synchronized without the adverse effect of communication delay.
2Speed
If lens information is obtained continuously at high frequency, then the responsiveness of image stabilization improves, but the power consumption of the interchangeable lens increases
Solution Approach 1:
The patent applies dynamics by making the lens information acquisition frequency adaptive rather than fixed. The system dynamically adjusts the acquisition frequency based on shooting conditions and the measured communication delay time, allowing high responsiveness when needed while reducing power consumption during normal operation. This dynamic adjustment optimizes the balance between performance and energy usage.
3Measurement precision
If the output timing of blur detection is changed according to exposure time or frame rate, then the detection accuracy of moving object speed improves, but the synchronization between motion vector detection and image stabilization becomes more complex
Solution Approach 1:
The patent applies feedback by using the measured communication delay time as a reference value to automatically adjust and synchronize the timing of lens information acquisition with the motion vector detection and image stabilization processes. This feedback mechanism simplifies the synchronization complexity by providing a clear timing reference that coordinates all components without requiring complex manual configuration.
Data Source
AI summary
An image capturing apparatus is configured to have an interchangeable lens detachably mounted thereto, and is provided with an image capturing unit configured to obtain a captured image, a synchronous signal generation unit configured to generate a synchronous signal for reading out the captured image continuously from the image capturing unit, a communication unit configured to transmit the synchronous signal to the interchangeable lens, and a measurement unit configured to measure a delay time from a timing at which the synchronous signal is generated until a timing at which the communication unit transmits the synchronous signal to the interchangeable lens, the delay time being transmitted to the interchangeable lens by the communication unit together with the synchronous signal.