Adapter Charge Control via Single Data Line Pulse Encoding
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Solution Overview
Problem
The increasing demand for quick charging in portable electronic devices complicates charge control between devices and adapters, leading to higher design costs and complexity.
Innovation Solution
A method using a single data line to transmit charge control signals with encoded pulses, allowing the adapter to determine quick charge mode and adjust voltage accordingly, reducing design complexity and cost by eliminating the need for multiple data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple data lines are used to transmit charge control signals for quick charging, then charge control precision is improved, but device complexity and design cost increase
Solution Approach 1:
The patent applies parameter changes by encoding charge control information in the time domain rather than using separate data lines. Specifically, it uses pulse width modulation where the width of pulses represents different charge voltage levels (e.g., first width for 5V, second width for 9V, third width for 12V). This transforms the communication method from spatial multiplexing (multiple lines) to temporal multiplexing (single line with encoded signals), thereby reducing device complexity while maintaining charge control precision
Solution Approach 2:
The patent uses a single data line to copy and transmit multiple types of charge control information through encoded pulse signals. Instead of requiring separate physical lines for different charge modes, the system encodes multiple voltage level commands onto one communication channel using pulse width encoding, effectively copying the functionality of multiple lines into a single encoded signal stream
2Reliability
If multiple data lines are used to transmit charge control signals, then charge control reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing cost by changing the communication parameter from multiple parallel data lines to a single time-encoded data line. The encoder converts charge voltage selections into pulse width signals that can be transmitted through one line, reducing the bill of materials and assembly complexity while maintaining reliable charge control through the encoded signal protocol
Data Source
AI summary
An adapter, a portable electronic device and a charge control method thereof are provided. The adapter includes a connector and a controller. The connector includes a first terminal. The controller is electrically connected to the connector and determines whether to enter a quick charge mode according to a control signal from the connector. In the quick charge mod, the controller receives a charge control signal from the first terminal. The charge control signal has a plurality of pulses, and encoding information is formed by the plurality of pulses. The adapter is controlled by the controller according to the encoding information so as to provide a quick charge voltage.