WO2017076091A1 - Procédé et appareil de transmission de données et système de communication - Google Patents

Procédé et appareil de transmission de données et système de communication Download PDF

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Publication number
WO2017076091A1
WO2017076091A1 PCT/CN2016/093653 CN2016093653W WO2017076091A1 WO 2017076091 A1 WO2017076091 A1 WO 2017076091A1 CN 2016093653 W CN2016093653 W CN 2016093653W WO 2017076091 A1 WO2017076091 A1 WO 2017076091A1
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WIPO (PCT)
Prior art keywords
data
packet
operation instruction
data content
receiving
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Application number
PCT/CN2016/093653
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English (en)
Chinese (zh)
Inventor
程毅辉
侯旻翔
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广州视睿电子科技有限公司
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Publication of WO2017076091A1 publication Critical patent/WO2017076091A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/52—Queue scheduling by attributing bandwidth to queues
    • H04L47/527—Quantum based scheduling, e.g. credit or deficit based scheduling or token bank
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/321—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving a third party or a trusted authority
    • H04L9/3213—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving a third party or a trusted authority using tickets or tokens, e.g. Kerberos

Definitions

  • the present invention relates to the field of multimedia communication technologies, and in particular, to a data transmission method, apparatus, and communication system.
  • VGA Video Graphics Array
  • DVI Digital Visual Interface
  • HDMI High Definition Multimedia Interface
  • DP DisplayPort, display interface
  • any host and slave can be connected via USB cable for data interaction.
  • the token packet, the data packet, and the handshake packet need to be transmitted in sequence; wherein the token packet includes information for indicating that the receiving end receives the data and an address of the receiving end, and the data packet includes the data content to be transmitted.
  • the handshake packet is used to indicate the reception result of the feedback data at the receiving end. For example, when the host needs to transmit video data to the slave, it needs to transmit the first token packet, the first data packet, and the first handshake packet in sequence; after receiving the three packets, the slave device needs to sequentially transmit the second token packet and the first packet.
  • Two data packets thereby returning the reception result of the video data to the host (included in the second data packet); in addition, when the slave device processes the video data, it is necessary to return the operation instruction to the host, so that the host also works on the video data.
  • the slave device needs to additionally transmit the third token packet, the third data packet, and the third handshake packet, thereby returning an operation instruction for the video data to the host (included in the third data packet), and the host receives After the slave returns these packets, it is also necessary to transmit the fourth token packet and the fourth data packet to the slave to the slave. Feedback of the reception result of the operation instruction.
  • the inventor has found that the existing method for transmitting data through the USB interface has the following disadvantages: for each data interaction process, a token packet, a data packet, and a handshake packet need to be transmitted between the host and the slave. In order to realize the transmission of the data content, the receiver also needs to transmit the token packet and the data packet again to feed back the reception result of the data content. When multiple data interactions need to be performed between the master and the slave, multiple transmissions of the "received result of the data content" packets without actual data content may cause waste of the transmission resources, thereby reducing the transmission of the data content. effectiveness.
  • an object of the present invention is to provide a data transmission method, apparatus, and communication system capable of improving data transmission efficiency between two devices.
  • An embodiment of the present invention provides a data transmission method, including the following steps:
  • the first data includes a first token packet, a first data packet, and a first handshake packet
  • the first token packet includes First information of the displayed data content, second information indicating that the first device returns a first operation instruction, and an address of the first device
  • the first data packet includes the data content
  • the first handshake packet is used to instruct the first device to feed back a result of receiving the data content
  • the second data after the second device receives the second data, the data content displayed on the second device according to the first operation instruction Performing a synchronization process; wherein the second data includes a second token packet and a second data packet; the second token packet includes a receiving result of the data content, and is used to indicate that the second device receives the
  • the third information of the first operation instruction and the address of the second device, the second data packet includes the first operation instruction.
  • the second data further includes a second handshake packet, and the second handshake packet And configured to instruct the second device to feed back a receiving result of the first operation instruction;
  • the method further includes:
  • the third data includes a third token packet
  • the third token packet includes a receiving result of the first operation instruction, and the first device the address of.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction; and the second command
  • the card package further includes fourth information for instructing the second device to return a second operation instruction;
  • the method further includes:
  • the third data includes a third token packet and a third data packet;
  • the third token packet includes a receiving result of the first operation instruction, And fifth information indicating that the first device receives the second operation instruction and an address of the first device;
  • the third data packet includes the second operation instruction, and the second operation instruction is The touch frame of the second device receives an instruction that the second user processes the data content;
  • the first data packet further includes a check code for verifying the authenticity of the data content
  • the reception result of the data content is the reception success, and the data content is displayed on the first device.
  • the data content includes at least one of audio data, video data, a picture, and a text
  • the operation instruction includes any one of modifying the data content, opening a next-level menu, and playing an operation.
  • the embodiment of the invention further provides a data transmission device, including:
  • a first receiving unit configured to receive first data sent by the second device, where the first data includes a first token packet, a first data packet, and a first handshake packet; and the first token packet includes And the first information indicating that the first device receives the data content to be displayed, the second information used to instruct the first device to return the first operation instruction, and the address of the first device, where the first data packet includes The data content, the first handshake packet is used to instruct the first device to feed back a result of receiving the data content;
  • a display unit configured to display data content in the first data
  • An instruction unit configured to receive, by using a touch frame of the local device, a first operation instruction that the first user processes the data content
  • a sending unit configured to return the second data to the second device, so that after the second device receives the second data, the second device can display the second device according to the first operation instruction.
  • synchronizing the data content wherein the second data includes a second token packet and a second data packet; the second token packet includes a receiving result of the data content, and is used to indicate the The second device receives the third information of the first operation instruction and the address of the second device, and the second data packet includes the first operation instruction.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction;
  • the data transmission device further includes:
  • a second receiving unit configured to receive third data sent by the second device, where the third data includes a third token packet, where the third token packet includes receiving the first operation instruction The result and the address of the first device.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction; and the second command
  • the card package further includes fourth information for instructing the second device to return a second operation instruction;
  • the data transmission device further includes:
  • a second receiving unit configured to receive third data sent by the second device, where the third data includes a third token packet and a third data packet, where the third token packet includes An operation instruction a receiving result, a fifth information indicating that the first device receives the second operation instruction, and an address of the first device, the third data packet includes the second operation instruction;
  • the second The operation instruction is to receive, by using a touch frame of the second device, an instruction that the second user processes the data content;
  • a processing unit configured to perform synchronization processing on the data content displayed by the local device according to the second operation instruction in the third data.
  • the first data packet further includes a check code for verifying the authenticity of the data content
  • the display unit specifically includes:
  • a parsing subunit configured to parse the data content from the first data packet of the first data
  • a verification subunit configured to verify the data content according to the check code in the first data packet
  • the executing subunit is configured to determine, after the verification is passed, that the receiving result of the data content is successful, and display the data content.
  • the present invention also provides a communication system comprising a first device and a second device; the first device comprising a data transmission device as described above.
  • An embodiment of the present invention further provides another data transmission method, including the following steps:
  • the first device After the first device receives the first data, displaying the data content;
  • the first device returns second data to the second device; wherein the second data includes a second token packet and a second data packet; the second token packet includes receiving the data content a third information indicating that the second device receives the first operation instruction and a ground of the second device Address, the second data packet includes the first operation instruction;
  • the second device After receiving the second data, the second device performs synchronization processing on the data content displayed on the second device according to the first operation instruction.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction;
  • the method further includes:
  • third data to the first device, where the third data includes a third token packet, where the third token packet includes a receiving result and a location of the first operation instruction The first device address.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction; and the second command
  • the card package further includes fourth information for instructing the second device to return a second operation instruction;
  • the method further includes:
  • the second device receives, by the touch frame of the local device, a second operation instruction that the second user processes the data content
  • third data to the first device, where the third data includes a third token packet and a third data packet; and the third token packet includes the first operation instruction a receiving result, a fifth information indicating that the first device receives the second operation instruction, and an address of the first device, where the third data packet includes the second operation instruction;
  • the first device After receiving the third data, the first device performs synchronization processing on the data content displayed on the first device according to the second operation instruction.
  • the first data packet further includes a check code for verifying the authenticity of the data content
  • the first device After the first device receives the first data, displaying the data content, specifically:
  • the first device After receiving the first data, the first device parses the data content from the first data packet of the first data;
  • the first device performs verification on the data content according to the check code in the first data packet
  • the first device determines that the reception result of the data content is successful, and displays the data content.
  • the data transmission method, device, and communication system provided by the embodiments of the present invention have the following beneficial effects: when the second device sends the first data to the first device, the instruction packet is added to the token packet of the first data.
  • a device returns information of the operation instruction; wherein the data packet of the first data includes data content.
  • the first device processes the data content, and returns the second data to the second device, where the token packet of the second data includes a receiving result of the data content, and the The data packet of the second data includes an operation instruction of the first device to the data content.
  • the data content is synchronously processed, and the third data is returned to the first device; wherein the token packet of the third data includes a receiving result of the operation instruction, and
  • the data packet of the third data includes an operation instruction of the second device to the data content. That is to say, when the data interaction is performed between the second device and the first device, after receiving the data content, the receiving party does not need to separately return the “received result of the data content” packets that have no actual data content, and When the receiver returns other data content, it also carries the information of the last "received result of the data content", and returns it together, so that the packets without the actual data content do not occupy the transmission resources separately, which is improved.
  • the efficiency of transmission of data content between the second device and the first device In particular, in the case that data needs to be transmitted multiple times between the first device and the second device, the embodiment of the present invention can greatly improve the transmission efficiency.
  • FIG. 1 is a schematic flow chart of an embodiment of a data transmission method provided by the present invention.
  • FIG. 2 is a schematic structural diagram of an embodiment of a data transmission device provided by the present invention.
  • FIG. 3 is a schematic structural diagram of an embodiment of a display unit of a data transmission device provided by the present invention.
  • FIG. 4 is a schematic structural diagram of an embodiment of a data transmission system according to an embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of another embodiment of a data transmission method provided by the present invention.
  • FIG. 6 is a schematic flow chart of still another embodiment of a data transmission method provided by the present invention.
  • FIG. 7 is a schematic flow chart of still another embodiment of a data transmission method provided by the present invention.
  • FIG. 1 is a schematic flowchart diagram of an embodiment of a data transmission method provided by the present invention.
  • the present invention provides a data transmission method, including steps S11 to S14, as follows:
  • the first data includes a first token packet, a first data packet, and a first handshake packet.
  • the first token packet includes first information for instructing the first device to receive data content to be displayed. Instructing the first device to return the second information of the first operation instruction and the address of the first device, the first data packet includes the data content, and the first handshake packet is used to indicate the first A device feeds back the result of receiving the data content.
  • the data content includes at least one of audio data, video data, a picture, and a text.
  • the data content may also be other types of data, such as a table or the like.
  • the first data packet may further include a check code for verifying the authenticity of the data content, where the data content in the first data is displayed on the first device, Specifically include:
  • the data content is parsed from the first data packet of the first data.
  • the data content is verified according to the check code in the first data packet.
  • the read data of the first device is transmitted to the Flash for decoding by the display main chip of the first device; and the decoded data is read by the display main chip, and then transmitted to the device.
  • the display of the first device is displayed.
  • the response packet is returned to the second device, where the response packet includes information that the reception result of the data content is reception failure and is used to indicate the location.
  • the second device resends the information of the data content; and then, the data content resent by the second device is verified. If the verification fails, the above steps are repeated until the verification result of the received data content is passed.
  • the first operation instruction includes any one of modifying the data content, opening a next-level menu, and playing an operation.
  • the first operation instruction may also be other types of instructions, for example, when the data content is a teaching courseware, the first operation instruction may be an instruction to annotate the teaching courseware.
  • the second data includes a second token packet and a second data packet, where the second token packet includes a result of receiving the data content, and is used to instruct the second device to receive the first operation. a third information of the instruction and an address of the second device, the second data packet including the first operation instruction.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction;
  • the method further includes:
  • the third data includes a third token packet, where the third token packet includes a receiving result of the first operation instruction and an address of the first device.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction;
  • the second token packet further includes fourth information for instructing the second device to return a second operation instruction;
  • the method further includes:
  • the third data includes a third token packet and a third data packet.
  • the third token packet includes a receiving result of the first operation instruction, and is used to instruct the first device to receive the first a fifth information of the second operation instruction and an address of the first device;
  • the third data package includes the second operation instruction, and the second operation instruction is to receive the second user by using a touch frame of the second device An instruction to process the data content.
  • the data transmission method provided by the foregoing embodiment may be performed by the first device or by a device configured on the first device side.
  • the present invention further provides a data transmission apparatus, which can perform all the processes of the data transmission method provided by the foregoing embodiments.
  • FIG. 2 is a schematic structural diagram of an embodiment of a data transmission apparatus provided by the present invention.
  • the present invention provides a data transmission apparatus, including a first receiving unit 21, a display unit 22, an instruction unit 23, a transmitting unit 24, and a transmitting unit 25, as follows:
  • the first receiving unit 21 is configured to receive the first data sent by the second device.
  • the first data includes a first token packet, a first data packet, and a first handshake packet.
  • the first token packet includes first information for instructing the first device to receive data content to be displayed. Instructing the first device to return the second information of the first operation instruction and the address of the first device, the first data packet includes the data content, and the first handshake packet is used to indicate the first a device feedback to the The result of receiving the data content.
  • the data content includes at least one of audio data, video data, a picture, and a text.
  • the data content may also be other types of data, such as a table or the like.
  • the display unit 22 is configured to display data content in the first data.
  • the first data packet further includes a check code for verifying the authenticity of the data content
  • FIG. 3 is a schematic structural diagram of an embodiment of a display unit of a data transmission device provided by the present invention.
  • the display unit 22 includes a parsing subunit 221, a parsing subunit 222, and an executing subunit 223, as follows:
  • the parsing subunit 221 is configured to parse the data content from the first data packet of the first data.
  • the verification subunit 222 is configured to verify the data content according to the check code in the first data packet.
  • the executing sub-unit 223 is configured to determine, after the verification is passed, that the receiving result of the data content is successful, and display the data content.
  • the execution sub-unit 223 transmits the read data content to the Flash through the display main chip, and then decodes through the display main chip. The decoded data is taken and transmitted to the display for display.
  • the data transmission device 20 returns a response packet to the second device, where the response packet includes receiving the data content as a failure to receive.
  • the verification sub-unit 222 checks the data content resent by the second device. If the verification fails, the above steps are repeated until the verification result of the received data content is passed.
  • the instruction unit 23 is configured to receive, by the touch frame of the local device, a first operation instruction that the first user processes the data content.
  • the first operation instruction comprises revising the data content and opening the next dish. Any of the single and playback operations.
  • the first operation instruction may also be other types of instructions, for example, when the data content is a teaching courseware, the first operation instruction may be an instruction to annotate the teaching courseware.
  • the sending unit 24 is configured to return the second data to the second device, so that after the second device receives the second data, the second device can be configured according to the first operation instruction.
  • the displayed data content is synchronized.
  • the second data includes a second token packet and a second data packet, where the second token packet includes a result of receiving the data content, and is used to instruct the second device to receive the first operation. a third information of the instruction and an address of the second device, the second data packet including the first operation instruction.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction;
  • the data transmission device 20 further includes: a second receiving unit 25, configured to receive third data sent by the second device.
  • the third data includes a third token packet, where the third token packet includes a receiving result of the first operation instruction and an address of the first device.
  • the second data further includes a second handshake packet, where the second handshake packet is used to instruct the second device to feed back a reception result of the first operation instruction;
  • the second token packet further includes fourth information for instructing the second device to return a second operation instruction;
  • the data transmission device 20 further includes a second receiving unit 25 and a processing unit 26, as follows:
  • the second receiving unit 25 is configured to receive third data sent by the second device.
  • the third data includes a third token packet and a third data packet.
  • the third token packet includes a receiving result of the first operation instruction, and is used to instruct the first device to receive the first a fifth information of the second operation instruction and an address of the first device;
  • the third data package includes the second operation instruction, and the second operation instruction is to receive the second user by using a touch frame of the second device An instruction to process the data content.
  • the processing unit 26 is configured to perform synchronization processing on the data content displayed by the local device according to the second operation instruction in the third data.
  • the present invention also provides a communication system.
  • FIG. 4 is a schematic structural diagram of an embodiment of a communication system according to an embodiment of the present invention.
  • the communication system includes a first device 100 and a second device 200.
  • the first device 100 includes the data transmission device 20 as described above.
  • the second device 200 may be a device having the same structural function as the first device 100, for example, a mobile phone, a tablet computer, a PC, or a projector. These may be set according to actual needs, and the present invention is not specifically limited. .
  • the first device 100 and the second device 200 are connected by a USB transmission line, and data transmitted between the first device 100 and the second device 200 is encapsulated into data in a USB format, and then transmitted.
  • FIG. 5 is a schematic flowchart of another embodiment of a data transmission method provided by the present invention, including steps S51 to S55, as follows:
  • the second device sends the first data to the first device, where the first data includes a first token packet, a first data packet, and a first handshake packet, where the first token packet includes
  • the first device receives the first information of the data content to be displayed, the second information used to instruct the first device to return the first operation instruction, and the address of the first device, where the first data packet includes The data content, the first handshake packet is used to instruct the first device to feed back a result of receiving the data content.
  • the data content includes at least one of audio data, video data, a picture, and a text.
  • the data content may also be other types of data, such as a table or the like.
  • the second device and the first device perform data transmission through a USB interface
  • the data transmission of the USB interface can be implemented by hardware, firmware and software; wherein the software part of the application is working on the device, to windows or other operating system For the upper layer of the operating platform, it reads from or writes to the device real-time data that is transmitted synchronously.
  • the original data of the data content is stored in a hard disk of the second device, and when the second device needs to transmit the data content to the first device, a CPU processor of the second device invokes a hard disk.
  • Raw data of the data content then, the CPU processor will original the data content Transmitting data to the graphics card of the second device for decoding; then, the application reads the decoded data from the graphics card, re-encodes the data into H.264 format to conform to the USB transmission protocol, and encodes the encoded
  • the data content and the time synchronization signal are encapsulated into the first data packet; wherein the time synchronization signal is used to indicate that the receiving end identifies the start and end of the corresponding signal of each data frame to ensure the integrity of the transmitted signal, and is also used for The clock synchronization of the receiving end is controlled such that the clock maintains the same frequency as the transmitting end to ensure the accuracy of the transmitted signal.
  • the application transmits the first data packet to the USB interface of the second device.
  • the first device After receiving the first data, the first device displays the data content.
  • the first data packet further includes a check code for verifying the authenticity of the data content, and after the first device receives the first data, displaying the data content.
  • a check code for verifying the authenticity of the data content
  • the data content is parsed from the first data packet of the first data.
  • the first device checks the data content according to the check code in the first data packet.
  • the first device determines that the reception result of the data content is successful, and displays the data content.
  • the display main chip of the first device transmits the read data content to the Flash for decoding, and then the display main chip reads the decoded data, that is, It can be transmitted to the display screen of the first device for display.
  • the first device if the verification of the data content does not pass, the first device returns a response packet to the second device, where the response packet includes information that the reception result of the data content is reception failure. And the information used to instruct the second device to resend the data content, and then the first device performs verification on the data content that is resent by the second device, and if the multiple verification fails, The above steps are repeated until the verification result of the received data content by the first device is passed, and the design solutions are all within the protection scope of the present invention, and details are not described herein again.
  • the first device receives, by using a touch frame of the local device, the first user, where the data content is performed.
  • the first operational instruction is included in the first operational instruction.
  • the first operation instruction includes any one of modifying the data content, opening a next-level menu, and playing an operation.
  • the first operation instruction may also be other types of instructions, for example, when the data content is a teaching courseware, the first operation instruction may be an instruction to annotate the teaching courseware.
  • the first device returns second data to the second device.
  • the second data includes a second token packet and a second data packet, where the second token packet includes a result of receiving the data content, and is used to instruct the second device to receive the first operation. a third information of the instruction and an address of the second device, the second data packet including the first operation instruction.
  • the second device After receiving the second data, the second device performs synchronization processing on the data content displayed on the second device according to the first operation instruction.
  • the second data further includes a second handshake packet, where the second handshake packet is used to indicate that the second device feeds back the first operation.
  • the result of receiving the instruction is a second handshake packet, where the second handshake packet is used to indicate that the second device feeds back the first operation.
  • step S66 After synchronizing the data content displayed on the second device, the method further includes step S66:
  • the second device returns third data to the first device, where the third data includes a third token packet, where the third token packet includes a receiving result of the first operation instruction. And the first device address.
  • the second data further includes a second handshake packet, where the second handshake packet is used to indicate that the second device feeds back to the first The receiving result of the operation instruction; and the second token packet further includes fourth information for instructing the second device to return the second operation instruction;
  • the second device receives, by using a touch frame of the local device, a second operation instruction that the second user processes the data content;
  • the second device returns third data to the first device, where the third data includes a third token packet and a third data packet; and the third token packet includes the first a receiving result of the operation instruction, a fifth information indicating that the first device receives the second operation instruction, and an address of the first device, where the third data packet includes the second operation instruction;
  • the first device After receiving the third data, the first device performs synchronization processing on the data content displayed on the first device according to the second operation instruction.
  • the data transmission method, device, and communication system provided by the embodiments of the present invention have the following beneficial effects: when the second device sends the first data to the first device, the instruction packet is added to the token packet of the first data.
  • a device returns information of the operation instruction; wherein the data packet of the first data includes data content.
  • the first device processes the data content, and returns the second data to the second device, where the token packet of the second data includes a receiving result of the data content, and the The data packet of the second data includes an operation instruction of the first device to the data content.
  • the data content is synchronously processed, and the third data is returned to the first device; wherein the token packet of the third data includes a receiving result of the operation instruction, and
  • the data packet of the third data includes an operation instruction of the second device to the data content. That is to say, when the data interaction is performed between the second device and the first device, after receiving the data content, the receiving party does not need to separately return the “received result of the data content” packets that do not contain the actual data content. Rather, when the receiver returns other data content, it also carries the last "received result of the data content” information, and returns it together, so that the packets without the actual data content will not occupy the transmission resources separately.
  • the transmission efficiency of the data content between the second device and the first device is improved. In particular, in the case that data needs to be transmitted multiple times between the second device and the first device, the embodiment of the present invention can greatly improve the transmission efficiency.
  • a user sends a video data to a display terminal (ie, a first device) through a mobile terminal, such as a mobile phone, a PC, or a tablet computer, for display.
  • a display terminal ie, a first device
  • a mobile terminal such as a mobile phone, a PC, or a tablet computer
  • the information and the address of the display end the first data packet includes video data
  • the first handshake packet is used to instruct the display end to feed back the reception result of the video data
  • the display end parses the video data from the first data packet to the video.
  • the data is displayed, and the operation instruction of the user playing the video or opening the next menu is received through the local touch frame; then, the display end returns to the mobile terminal the second data including the receiving result and the operation instruction for the video data, wherein
  • the second token packet of the second data includes a reception result of the video data, a third information for instructing the mobile terminal to receive the operation instruction, and an address of the mobile terminal, the second data packet includes an operation instruction, and the mobile terminal receives the second instruction
  • the video displayed locally is synchronized according to the operation instruction.
  • the application is in a multimedia teaching system, and the teacher end (ie, the second device) sends the teaching courseware to the student end (ie, the first device), and sequentially transmits the first token packet, the first data packet, and the first handshake packet.
  • the first token package includes first information for instructing the student end to receive the teaching courseware, second information for instructing the student terminal to return the operation instruction, and an address of the student end, the first data package including the teaching courseware, the The first handshake packet is used to instruct the student end to feedback the receiving result of the teaching courseware; the student side displays the teaching courseware after parsing the teaching courseware from the first data packet, and receives the student's problem with the teaching courseware through the local touch frame.
  • the first operation instruction of the annotation then, the student returns to the teacher end second data including the reception result of the teaching courseware and the first operation instruction, wherein the second token package of the second data includes the reception result of the teaching courseware
  • the second data packet includes a first operation instruction; after receiving the second data, the teacher end synchronizes the teaching courseware displayed locally according to the first operation instruction, and receives the teacher's instructional commentary for the courseware through the local touch frame.
  • the teacher Performing a second operation instruction for revising or replying to the annotation; then, the teacher returns to the student end third data including the acceptance result of the first operation instruction and the second operation instruction; after receiving the third data, the student terminal according to the second Operation instructions to synchronize the teaching courseware displayed locally.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Abstract

La présente invention concerne un procédé de transmission de données. Le procédé comprend les étapes suivantes consistant à : recevoir des premières données envoyées par un second dispositif, les premières données comprenant un premier paquet de jetons, un premier paquet de données et un premier paquet d'établissement de liaison, le premier paquet de données comprenant un contenu de données qui doit être affiché ; afficher le contenu de données des premières données sur un premier dispositif ; recevoir, au moyen d'un cadre tactile du premier dispositif, une première instruction d'opération d'un premier utilisateur pour traiter le contenu de données ; et renvoyer des secondes données au second dispositif de telle sorte que le second dispositif puisse traiter de manière synchrone le contenu de données affiché sur le second dispositif en fonction de la première instruction d'opération après que le second dispositif reçoit les secondes données. La présente invention porte, dans des modes de réalisation, sur un appareil de transmission de données et sur un système de communication. Grâce aux modes de réalisation de la présente invention, l'efficacité de transmission de données entre deux dispositifs peut être améliorée.
PCT/CN2016/093653 2015-11-03 2016-08-05 Procédé et appareil de transmission de données et système de communication WO2017076091A1 (fr)

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