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Data transmission method, device and system

A data transmission method and data transmission technology, which are applied in the field of data transmission methods, equipment and systems, can solve problems such as the complexity of the implementation process, and achieve the effect of simplifying the data transmission process and avoiding conflicts

Active Publication Date: 2017-02-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that the prior art has the following problems: FSK modulation needs to be performed on the sending device and FSK demodulation should be performed on the receiving device during the data transmission process, and the implementation process is complicated

Method used

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  • Data transmission method, device and system
  • Data transmission method, device and system
  • Data transmission method, device and system

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] figure 1 is a schematic structural diagram of a data transmission system provided by an embodiment of the present invention, see figure 1 , the data transmission system is a point-to-point connection system, including a data transmission device and a first device, wherein the data transmission device is currently charging the first device through a universal serial bus USB, or the first device is currently charging the first device through ...

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Abstract

The present invention discloses a data transmission method, device and system, belonging to the communication technology field. The method comprises: a data transmission device requires obtaining the bus ownership of a USB, divides the data to be sent into a plurality of bytes and generates a plurality of check bits, each byte corresponds to one check bit; and a plurality of types and a plurality of check bits are transmitted through an assigned signal line, wherein after the nth byte in the bytes is transmitted, the nth check bit corresponding to the nth byte and at least one assigned time pulse are transmitted, and then the (n+1)th byte is transmitted until the transmission of the bytes and the check bits are completed, wherein n is a natural number. The data transmission device charges a first device through the USB at present, or the first device charges the data transmission device through the USB at present. Through adoption of the baseband transmission technology, the data transmission method, device and system can realize the dual-way communication on one signal line and do not need modulation and demodulation in the communication process so as to simplify the data transmission process.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data transmission method, device and system. Background technique [0002] The USB (Universal Serial Bus, Universal Serial Bus) interface is a serial bus standard for connecting computer systems and external devices, and is widely used in information communication devices such as personal computers and mobile devices. [0003] USB includes four signal lines, namely VBUS, D-, D+, and GND. VBUS is the power line for power supply, GND is the ground line, and D- and D+ are differential data line pairs. When the slave device is charging the master device, when the master device and the slave device transmit data through USB, one of the devices is the sending device and the other device is the receiving device. After the sending device encodes the original data to be sent, it performs FSK (Frequency Shift Keying, Frequency Shift Keying) modulation, and transmits the mo...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L12/26H04L12/40
Inventor 李旭光郑广伟杨学钢许道海
Owner HUAWEI TECH CO LTD
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