Data transmission method based on charging cable and electronic equipment

Abstract

The invention discloses a data transmission method based on a charging cable and an electronic device, a first electronic device is connected with a second electronic device through a third electronic device, the third electronic device comprises a first data signal line and a second data signal line, and when the method is applied to the first electronic device, the first data signal line is connected with the second data signal line. A connection with the second electronic device may be detected; sending a first message through the first pin; the first pin is connected with a first data signal line; receiving a second message through the second pin; the second pin is connected with a second data signal line; the first message and the second message are used for setting charging of the first electronic equipment.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 202010682894.2 and the application title "A Data Transmission Method, Device and System" submitted to the China Patent Office on July 15, 2020, the entire contents of which are incorporated herein by reference Application in progress; this application claims the priority of the Chinese patent application submitted to the China Patent Office on October 27, 2020, with the application number 202011167642.2 and the application name "A Method, Device and System for Cable Identification", all of which have been passed Incorporated by reference in this application; this application claims the priority of a Chinese patent application submitted to the China Patent Office on October 28, 2020, with application number 202011175402.7 and application title "A Data Transmission Method and Device", the entire contents of which Incorporated in this application by reference; this application r...

AI Technical Summary

Problems solved by technology

However, the USB PD fast charging protocol cannot be applied to charging scenarios other than the Type-C to Type-C interface, such as Type A to Type B interface scenarios, and the USB PD protocol has relatively large restrictions on charging power and specifications , the implementation is more complicated and the cost is higher

[0005]Another type of fast charging protocol is a fast charging protocol based on D+ / D-(Data+ / Data-) channel communication, such as Huawei SCP, OPPO VOOC, QC, Samsung AFC, etc., however, in the existing charging process based on D+ / D- (Data+ / Data-) channel communication, the transmission efficiency of charging data or instructions is very low. During the charging process of terminal products, the terminal or power supply equipment The transmission of information waiting to be transmitted due to charging status or sudden failure may be delayed, which will affect the safety of the charging system

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