Multi-Sensor Temperature Control for Accurate Remaining Shoot Time
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Solution Overview
Problem
Existing temperature control methods for electronic devices, such as digital cameras, fail to accurately account for ambient temperature changes, leading to premature operation restrictions or incomplete shootable time predictions during high-definition image capture, causing inconvenience to users.
Innovation Solution
The implementation of multiple thermometers to detect temperatures at various positions within the device, including heat source devices and the outer casing, with a control unit that corrects temperature differences based on specific characteristics and displays an appropriate notification of the remaining operable time before reaching operation restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operation restriction is implemented based on temperature without considering ambient temperature changes, then device safety is ensured, but shootable time prediction accuracy deteriorates
Solution Approach 1:
The patent applies parameter changes by introducing ambient temperature as a variable parameter in the shootable time calculation. The control unit dynamically adjusts the shootable time based on the detected ambient temperature, recognizing that temperature rise characteristics change with different ambient conditions. This resolves the contradiction by maintaining safety thresholds while improving prediction accuracy through adaptive parameter adjustment.
Solution Approach 2:
The patent implements feedback by continuously monitoring ambient temperature and using this information to adjust shootable time predictions. The system detects ambient temperature changes and feeds this information back into the calculation mechanism, allowing the shootable time to be dynamically updated. This feedback loop ensures both device safety and accurate user notification.
2Reliability
If operation restriction is implemented without ambient temperature consideration, then device protection is achieved, but user convenience deteriorates due to premature shooting stop
Solution Approach 1:
The patent changes the parameter set used for operation restriction decisions by incorporating ambient temperature into the calculation. This allows the system to protect the device from actual overheating while avoiding premature shutdowns that would occur with fixed threshold methods. The adaptive parameter adjustment maintains device protection while improving user convenience through more accurate shootable time predictions.
3Measurement precision
If multiple thermometers are used to detect temperatures at various positions, then temperature monitoring accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the temperature monitoring function into multiple independent thermometer units positioned at different locations within the device. Each thermometer monitors a specific region (heat source, outer casing), and the control unit integrates these segmented measurements to determine overall device temperature status. This segmentation improves measurement precision while managing complexity through modular design.
Solution Approach 2:
The patent achieves universality by designing the control unit to handle multiple temperature measurements from different thermometers through a unified calculation framework. The same control logic processes data from all thermometer positions, determining shootable time based on the most critical temperature reading. This multi-functional approach improves monitoring accuracy without proportionally increasing system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides accurate and timely notifications, extending the operable time of the device while ensuring safe operation by accounting for ambient and device-specific temperature changes, thereby enhancing user experience.
Implementation Method 1
a plurality of thermometers that detect temperatures at a plurality of positions in the electronic apparatus
Data Source
AI summary
An electronic apparatus includes a plurality of thermometers and a control unit that performs control to restrict an operation of the electronic apparatus in a case where one of the plurality of temperatures has reached the threshold temperature. The control unit performs control to obtain a first difference between the temperature of a heat source and a threshold temperature for the temperature of the heat source and a second difference between the temperature of an outer casing and a threshold temperature for the temperature of the outer casing, correct the first difference based on temperature increase characteristics of the heat source, correct the second difference based on temperature increase characteristics of the outer casing, and display the information based on the corrected first difference or the corrected second difference.