Interchangeable Lens Parallel Drive Control for Imaging Efficiency
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Solution Overview
Problem
Existing imaging apparatuses with interchangeable lenses face inefficiencies in driving both focus lenses and diaphragms simultaneously due to data communication limitations, leading to prolonged exposure times when both components need to be driven.
Innovation Solution
The implementation of a reservation control mechanism within the interchangeable lens system, where the camera body sends reservation control information for one movable member, allowing the lens to store this information and subsequently drive both movable members, such as the focus lens and diaphragm, in parallel upon receiving control information for the second member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the camera body sends control signals to drive the focus lens and diaphragm separately, then the data communication protocol remains simple, but it takes a long time to complete the drive of both movable members
Solution Approach 1:
The interchangeable lens stores the second control information (diaphragm drive instruction) in advance before receiving the first control information (focus lens drive instruction). This preliminary storage allows both drive operations to execute simultaneously once the first control information arrives, eliminating the sequential delay while keeping the communication protocol simple.
2Loss of time
If the camera body sends two drive instructions in one piece of control information, then the drive time for both movable members is reduced, but the data communication capacity requirement increases
Solution Approach 1:
The control information is segmented into two separate transmissions: first control information for the focus lens drive and second control information for the diaphragm drive. The interchangeable lens stores the second control information and executes both drives simultaneously upon receiving the first control information, achieving parallel execution without requiring increased data communication capacity.
3Device complexity
If the interchangeable lens waits for control signals from the camera body before driving movable members, then the control flow remains simple, but the exposure time increases
Solution Approach 1:
The interchangeable lens performs preliminary storage of the second control information (diaphragm drive instruction) before receiving the first control information (focus lens drive instruction). This allows the lens to immediately execute both drive operations in parallel upon receiving the first control signal, eliminating waiting time and improving exposure efficiency while maintaining simple control flow.
Data Source
AI summary
An interchangeable lens includes an obtaining unit for obtaining first control information and second control information from the camera body, the first control information being an instruction to control the first drive unit (diaphragm), the second control information being an instruction to control the second drive unit (focus lens, etc), a storage unit for storing the obtained second control information, and a controller for controlling the first drive unit and the second drive unit based on the first and second control information obtained. The second control information (reservation control information) is an instruction to control the second drive unit when the obtaining unit receives the first control information after receiving the second control information. When the obtaining unit obtains the first control information after obtaining the second control information, the controller drives the first drive unit and the second drive unit in parallel based on the obtained first control information and the stored second control information.