Dual Authentication Battery Charging Control for External Accessories
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Solution Overview
Problem
Existing electronic apparatuses cannot authenticate accessory apparatuses or batteries connected to them, leading to potential safety and operational issues with unauthorized or incompatible accessories and batteries.
Innovation Solution
Incorporating a first authentication unit to verify the accessory apparatus and a second authentication unit to verify the connected battery, with a control unit that allows discharge but restricts charging if the accessory is not authenticated, ensuring only predetermined accessories and batteries are used for safety and compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication of accessory apparatus is not implemented, then device complexity is reduced, but reliability deteriorates due to inability to ensure safety and compatibility of connected accessories and batteries
Solution Approach 1:
The authentication system is segmented into two independent authentication units: a first authentication unit for authenticating the accessory apparatus and a second authentication unit for authenticating the battery. This segmentation allows each unit to perform its specific authentication function independently, improving reliability without excessively increasing overall system complexity.
Solution Approach 2:
The first authentication unit performs authentication of the accessory apparatus before the second authentication unit authenticates the battery. This preliminary action ensures that only authenticated accessories can access battery authentication and charging functions, establishing a hierarchical safety mechanism.
2Reliability
If charging is restricted for unauthenticated accessories, then reliability is improved, but ease of operation deteriorates due to limited battery functionality
Solution Approach 1:
Different operational qualities are applied to different authentication states: authenticated batteries receive full functionality (charging and discharging), while unauthenticated batteries receive restricted functionality (discharging only). This local quality differentiation ensures safety for unauthenticated devices while maintaining full operability for authenticated ones.
Solution Approach 2:
The system dynamically adjusts battery functionality based on authentication results. The control unit switches between different operational modes: full access mode for authenticated batteries and restricted mode for unauthenticated batteries. This dynamic adjustment resolves the contradiction by making the system adaptable to different trust levels.
3Reliability
If both accessory and battery authentication are implemented, then reliability is improved, but device complexity increases due to additional authentication units and control logic
Solution Approach 1:
The dual authentication system is divided into distinct functional modules: the first authentication unit handles accessory verification, while the second authentication unit handles battery verification. This segmentation allows each unit to be optimized for its specific task, improving authentication accuracy while managing complexity through modular design.
Solution Approach 2:
The first authentication unit operates preliminarily to verify the accessory apparatus before the second authentication unit verifies the battery. This sequential preliminary action reduces complexity by establishing a clear execution order and preventing unnecessary battery authentication attempts with unauthenticated accessories.
Data Source
AI summary
An apparatus includes a first authentication unit that performs an authentication process for determining whether an external apparatus is a predetermined external apparatus, a second authentication unit that performs an authentication process for determining whether a battery connected to the external apparatus is a predetermined battery, and a control unit that permits the battery to be discharged but restricts the battery from being charged regardless of whether the battery is the predetermined battery, in a case where the external apparatus is not authenticated as the predetermined external apparatus.