Wireless Flash Triggering Using Segmented Timing Instructions
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Solution Overview
Problem
Wireless flash systems face reliability issues due to interference and obstruction, leading to incorrect triggering of flash units during synchronous imaging.
Innovation Solution
A wireless communication system where the camera generates and transmits multiple emitting instructions with unique timing information, and the flash device receives and acts upon a single instruction based on its timing, ensuring synchronized flash emission with the camera's shutter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used for flash triggering, then ease of operation is improved, but communication reliability deteriorates due to interference and obstruction
Solution Approach 1:
The emitting instruction is segmented into multiple individual instructions, each containing unique timing information. The camera transmits a sequence of emitting instructions (e.g., first emitting instruction, second emitting instruction, third emitting instruction) with different timing values, allowing the flash unit to identify and execute only the appropriate instruction while ignoring others, thus preventing mistriggering in wireless environments
Solution Approach 2:
The timing information parameter is varied across multiple emitting instructions. Each instruction contains distinct timing information (e.g., first timing information, second timing information, third timing information) that corresponds to different shutter speeds. This parameter variation enables the flash unit to distinguish between instructions and execute only the one matching the current shooting conditions, resolving the reliability issue
2Reliability
If multiple emitting instructions are transmitted, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The emitting instruction structure is designed to be universal and multi-functional. Each instruction follows the same basic format with timing information, allowing the same communication protocol to handle multiple shutter speeds and flash timing scenarios. The flash unit uses the same reception and execution logic for all instructions, reducing complexity despite transmitting multiple instructions
Data Source
AI summary
An imaging apparatus for performing wireless communication with an external device. An instruction transmitting unit transmits an operation instruction to the external device. A response signal receiving unit receives a response signal from the external device. A first controlling unit starts a first operation relating to an imaging process in a case that a first time passes from a point of receiving the response signal by the response signal receiving unit. The external device executes a second operation relating to the imaging process in a case that a second time passes from a point of transmitting the response signal from the external device to the imaging apparatus.