Camera Power Control for Accessories Without Battery Communication
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Solution Overview
Problem
Image capture apparatuses, such as video cameras, cannot control the power supply to accessory devices effectively when they cannot communicate with the battery pack, leading to inappropriate power distribution and potential operational issues.
Innovation Solution
An image capture apparatus with a connection unit for accessory devices, a communication unit for the power source, and a control unit that determines and manages power supply based on predetermined values, ensuring appropriate power distribution even without direct communication with the power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the image capture apparatus communicates with the battery pack to acquire battery information, then power control accuracy is improved, but communication reliability deteriorates when communication fails
Solution Approach 1:
The system performs preliminary actions by establishing default power supply rules and predetermined values before communication failure occurs. When communication with the battery pack fails, the image capture apparatus can still control power supply to accessory apparatuses using these pre-established rules, ensuring continuous operation without interruption.
Solution Approach 2:
The control unit acts as an intermediary that mediates between the power source and accessory apparatuses. When direct communication with the battery pack is unavailable, the control unit uses predetermined power supply rules to make decisions, effectively bridging the gap between power source and accessories without requiring direct communication.
2Stability of the object's composition
If the image capture apparatus uses predetermined values for power determination when communication fails, then power supply stability is improved, but power distribution precision deteriorates
Solution Approach 1:
The system applies partial action by using predetermined power supply rules only when communication with the battery pack fails. When communication is available, the system switches to using actual battery information for more precise control. This partial application of predetermined values maintains stability during failures while preserving precision during normal operation.
Solution Approach 2:
The system dynamically changes the parameter source for power determination based on communication status. When communication is successful, it uses actual battery information parameters; when communication fails, it switches to predetermined value parameters. This parameter switching mechanism maintains both stability and precision under different operating conditions.
3Measurement precision
If the image capture apparatus controls power supply based on actual battery information, then power distribution accuracy is improved, but system complexity increases due to communication requirements
Solution Approach 1:
The system extracts and separates the communication function from the essential power supply control function. By using predetermined power supply rules that can operate independently of communication, the system removes the communication dependency from the core power control mechanism, reducing system complexity while maintaining power distribution accuracy when communication is available.
4Device complexity
If the image capture apparatus does not communicate with the battery pack, then device simplicity is improved, but power control capability deteriorates
Solution Approach 1:
The system enables self-service by incorporating predetermined power supply rules within the image capture apparatus itself, eliminating the need for external communication with the battery pack. The apparatus can independently determine and control power supply to accessory apparatuses using these built-in rules, maintaining power control capability while simplifying the overall system.
Data Source
AI summary
An image capture apparatus includes a connection unit to which an accessory apparatus is connected, a communication unit that communicates with a power source that supplies power to the image capture apparatus, and a control unit that determines power suppliable to the connection unit based on a predetermined value in a case where a predetermined communication with the power source is not to be performed. The connection unit is configured to supply power from the power source to the accessory apparatus.