Flash Device Wireless Communication Mode Switching
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Solution Overview
Problem
Image capturing systems are significantly affected by transmission delays and failures due to the need for precise timing in communication, which existing wireless communication systems fail to adequately address.
Innovation Solution
A flash device configuration with a wireless communication unit that operates in specific modes (reception, transmission, and transmission-reception suspension) to minimize power consumption and prevent signal processing during critical image capturing sequences, allowing for precise control of flash operations in image capturing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the wireless communication unit continuously operates in reception mode to ensure timely signal reception, then the response time is improved, but the power consumption increases and may cause interference during critical image capturing sequences
Solution Approach 1:
The flash device performs preliminary actions by switching to reception mode in advance before the image capturing sequence starts, ensuring it is ready to receive signals immediately when needed. The control unit switches the wireless communication unit to reception mode upon receiving a signal that an image capturing sequence is about to start, before the actual shooting instruction is given.
Solution Approach 2:
The wireless communication unit dynamically changes its operational state based on the timing of image capturing sequences. It switches between reception mode (when image capturing is about to start or during the sequence) and sleep mode (when image capturing is not active), adapting its behavior to the real-time requirements of the system.
2Reliability
If the wireless communication unit operates in reception mode during image capturing sequence, then signal reception reliability is improved, but transmission delays may still occur and affect precision
Solution Approach 1:
The system performs preliminary switching to reception mode before the image capturing sequence actually begins. When the control unit receives a signal indicating an image capturing sequence is about to start, it proactively switches the wireless communication unit to reception mode, ensuring the unit is already prepared and can immediately process signals without delay when the shooting instruction is given.
3Use of energy by moving object
If the wireless communication unit switches to sleep mode to reduce power consumption, then energy efficiency is improved, but response time increases and timing precision is lost
Solution Approach 1:
The wireless communication unit operates in periodic cycles, alternating between sleep mode (when image capturing is not active) and reception mode (when image capturing is about to start or during the sequence). This periodic switching optimizes power consumption while ensuring the unit is active and responsive during critical periods.
4Reliability
If the wireless communication unit operates continuously to ensure communication availability, then communication reliability is improved, but transmission failures may still occur due to timing issues in image capturing systems
Solution Approach 1:
The control unit proactively switches the wireless communication unit to reception mode upon receiving a signal that an image capturing sequence is about to start, before the actual shooting instruction is given. This preliminary action ensures the communication unit is already prepared and can immediately process signals without delay when the shooting instruction is given, eliminating timing-related transmission failures.
Data Source
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AI summary
A communication device in a system including a first device and a second device includes input means for receiving a predetermined control command, and shift means for causing the wireless communication means to shift to any of operation modes including a reception mode for receiving a signal from another device and a transmission mode for not receiving a signal from another device. In a case where the input means receives a control command, the shift means causes the wireless communication means to shift to the transmission mode without shifting to the reception mode.