Battery Grip Authentication Timing for Accurate Device Recognition
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Solution Overview
Problem
Electronic devices incorrectly recognize non-official battery grips as official products due to modified authentication communication using official battery authentication information, leading to incorrect power management.
Innovation Solution
Implementing a communication unit that sets a time limit for authentication communication based on the type of external device, using different communication methods and times for official and non-official devices, and employing distinct authentication information to differentiate between official and non-official products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If authentication communication uses official battery authentication information, then compatibility with official products is improved, but security against non-official devices is worsened
Solution Approach 1:
The patent changes the parameter of authentication time by setting different time limits for different device types. Official batteries complete authentication within a predetermined time, while non-official battery grips exceed this time limit, allowing the electronic device to distinguish between them despite using the same authentication information protocol
Solution Approach 2:
The patent introduces an intermediary measurement parameter (authentication time) that mediates between compatibility and security. By measuring how long authentication takes, the system can identify non-official devices without changing the authentication information itself, thus maintaining compatibility while improving security
2Reliability
If authentication time limit is set short, then prevention of non-official device recognition is improved, but legitimate authentication speed is worsened
Solution Approach 1:
The patent optimizes the authentication time parameter by setting it to a specific value that creates a clear distinction between official and non-official devices. The time limit is calibrated to be longer than official battery authentication time but shorter than non-official battery grip authentication time, achieving both accuracy and efficiency
Data Source
AI summary
An electronic device includes a communication unit and a control unit. The communication unit performs authentication communication to authenticate an external device connected to the electronic device. The control unit sets a time limit of the authentication communication to a predetermined time in a case where the external device is a first device. The predetermined time is a time that is longer than a time required for authentication communication between the first device and the electronic device, and is shorter than a time required for authentication communication between the electronic device and a second device different from the first device.