Charger Identification via Current Sequence Analysis
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Solution Overview
Problem
Electronic devices cannot determine whether a connected charger is a standard configuration charger, leading to potential abuse and harm due to the increasing number of charger types.
Innovation Solution
The method involves detecting the charging current output from the charger, quantifying variable current sequences into binary sequences, and comparing them to prestored sequences to identify whether the charger is standard or non-standard, with the charger outputting a current based on preset variable amplitude values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of chargers are used to charge various electronic devices, then the adaptability and versatility of charging solutions is improved, but the risk of charger abuse and harm to devices increases
Solution Approach 1:
The patent implements a feedback mechanism where the electronic device detects the charging current from the charger, quantifies it into a binary sequence, and compares it with a prestored standard sequence. This feedback loop enables the device to identify whether the connected charger is standard or nonstandard, allowing the system to respond appropriately (e.g., displaying warnings or preventing charging) when a nonstandard charger is detected, thus resolving the contradiction between charger versatility and safety
Solution Approach 2:
The patent introduces an intermediary identification mechanism (the current sequence comparison system) that mediates between the charger and the electronic device. This intermediary layer analyzes the charging current characteristics and provides identification information, enabling the device to distinguish between standard and nonstandard chargers without requiring direct physical inspection or complex authentication protocols
2Reliability
If charger identity identification is implemented, then the safety and reliability of charging is improved, but the device complexity increases due to additional detection and comparison functions
Solution Approach 1:
The patent employs a self-service approach where the electronic device uses its existing charging circuitry to detect and analyze the charging current. The device leverages its own internal resources (current detection capability, processing unit, and memory for storing the standard sequence) to perform the identification function, avoiding the need for separate dedicated hardware modules and thereby minimizing the increase in device complexity while maintaining high reliability
3Measurement precision
If the electronic device actively detects and quantifies charging current sequences, then the measurement precision of charger identification is improved, but the loss of time during the detection and quantification process increases
Solution Approach 1:
The patent applies preliminary action by prestoring the standard charging current binary sequence in the device's memory before the actual charging process begins. This pre-prepared reference data enables rapid comparison with the detected current sequence, significantly reducing the time required for identification while maintaining high measurement precision. The device only needs to perform real-time detection and comparison rather than complex analysis, minimizing detection time
Data Source
AI summary
This application provides a method for determining a charger, a related device, and a system. The method includes: detecting, by an electronic device, a charging current output from a charger; when amplitude values of the charging current are a sequence of variable current, quantifying the current sequence into a binary sequence; determining whether the quantified binary sequence is the same as a prestored binary sequence; and when the quantified binary sequence is different from the prestored binary sequence, outputting prompt information indicating that the charger is a non-standard configuration charger. According to the present invention, whether the charger is a standard configuration charger is determined. This manner is simple and convenient. In addition, no specific device detection module needs to be disposed on the charger.