Data transmission method, data transmitter, data receiver, and system

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• monitoring, by a client device, for sound wave information transmitted by a second device;
• detecting, by the client device, multiple transmissions that each include a corresponding instance of sound wave information, wherein each instance of sound wave information comprises predetermined security information generated based at least in part on time information that indicates a time at which the second device started transmitting the instance of the sound wave information, and wherein the second device transmits each instance of the sound wave information for a specified duration and each instance of the sound wave information includes different predetermined security information than each other instance of the sound wave information;
• for each of multiple instances of sound wave information of the detected transmissions,
• parsing, by the client device, the instance of sound wave information to obtain the predetermined security information included in the instance of sound wave information;
• generating, by the client device, pattern information that includes the obtained predetermined security information and data information to be sent by the client device;
• and
• displaying, by a display of the client device, the generated pattern information so that the second device can obtain the generated pattern information.

A computer-implemented system, comprising:

• one or more computers;
• and
• one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
• monitoring, by a client device, for sound wave information transmitted by a second device;
• detecting, by the client device, multiple transmissions that each include a corresponding instance of sound wave information, wherein each instance of sound wave information comprises predetermined security information generated based at least in part on time information that indicates a time at which the second device started transmitting the instance of the sound wave information, and wherein the second device transmits each instance of the sound wave information for a specified duration and each instance of the sound wave information includes different predetermined security information than each other instance of the sound wave information;
• for each of multiple instances of sound wave information of the detected transmissions,
• parsing, by the client device, the instance of sound wave information to obtain the predetermined security information included in the instance of sound wave information;
• generating, by the client device, pattern information that includes the obtained predetermined security information and data information to be sent by the client device;
• and
• displaying, by a display of the client device, the generated pattern information so that the second device can obtain the generated pattern information.