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Data transmission method and device based on charging cable

A data transmission method and cable technology, applied in circuit devices, battery data exchange, battery circuit devices, etc., can solve the problems of low transmission efficiency, high cost, and complex implementation of charging data or instructions

Pending Publication Date: 2022-05-13
HUAWEI TECH CO LTD
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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
[0006] 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, existing D+ / D-( During the charging process of Data+ / Data-) channel communication, the transmission efficiency of charging data or instructions is very low. Delays occur, resulting in an impact on the safety of the charging system

Method used

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  • Data transmission method and device based on charging cable
  • Data transmission method and device based on charging cable
  • Data transmission method and device based on charging cable

Examples

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example 1

[0402] The first message and the second message may include a start byte and an end byte of the data packet.

[0403] Such as Figure 6f As shown in (a), in combination with mode c1, in some embodiments, the start byte of the data packet may be a high-level pulse with a continuous duration. The end byte of the data packet can be a high level pulse with a continuous duration. For example, the start byte (SOF) of the data packet can be a high level pulse of 8 UI. For example, the end byte (EOF) of the data packet can be a high level pulse of 4 UI.

[0404] Such as Figure 6f As shown in (b), in combination with mode c2, in some embodiments, the start byte of the data packet may be a low-level pulse with a continuous duration. The end byte of the data packet can be a low-level pulse of continuous duration. For example, the start byte (SOF) of the data packet can be 8 UI (wherein, UI can be the length of time required for the bus to transmit a data bit, that is, the time for ...

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Abstract

The invention discloses a data transmission method and device based on a charging cable, first electronic equipment is connected with second electronic equipment through third electronic equipment, and the third electronic equipment comprises a first data signal line and a 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] Cross References to Related Applications [0002] This application claims the priority of the Chinese patent application with the application number: 202011167642.2 submitted to the China Patent Office on October 27, 2020, and the application name is "A cable identification method, device and system", the entire content of which is incorporated by reference In this application. technical field [0003] The present application relates to the technical field of charging, and in particular to a charging cable-based data transmission method and device. Background technique [0004] With the diversification of smart terminal functions and the trend of large screens, the power consumption of equipment is gradually increasing, and the battery capacity is gradually increasing. The demand for fast charging of smart terminal equipment is becoming stronger and stronger. In recent years, a variety of fast charging protocols have been derived in the industry. [0005] One type ...

Claims

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Application Information

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IPC IPC(8): G06F13/42H02J7/00
CPCG06F13/4282H02J7/00032G06F2213/0042
Inventor 彭江王超李宗健
Owner HUAWEI TECH CO LTD