A contact system includes an ID information management section that discloses and manages ID information for specifying a user to a third party; a contact information management section that gives priorities to respective pieces of contact information of the user of a plurality of contact tools, and manages the respective pieces of contact information in a private manner to the third party; a reception section that receives a contact request designating the ID information as a contact destination from the third party; a selection section that selects contact information to be used, from the respective pieces of contact information of the user according to the received ID information, based on the priorities; and a contact relay section that relays contact by the corresponding contact tool, by using the selected contact information.

A contact system includes an ID information management section that discloses and manages ID information for specifying a user to a third party; a contact information management section that gives priorities to respective pieces of contact information of the user of a plurality of contact tools, and manages the respective pieces of contact information in a private manner to the third party; a reception section that receives a contact request designating the ID information as a contact destination from the third party; a selection section that selects contact information to be used, from the respective pieces of contact information of the user according to the received ID information, based on the priorities; and a contact relay section that relays contact by the corresponding contact tool, by using the selected contact information.

A computer-implemented method of data transmission comprises: closing a displayed message on a display; displaying an inbox; displaying a reply window in the inbox; receiving reply input in the reply window; and transmitting the reply input to a sender of the closed message.

A computer-implemented method of data transmission comprises: closing a displayed message on a display; displaying an inbox; displaying a reply window in the inbox; receiving reply input in the reply window; and transmitting the reply input to a sender of the closed message.

A data transmission circuit includes a data sending module and a data receiving module. The data sending module includes a message identification unit, used for sending messages to corresponding encapsulation units according to a priority of message data to be sent; a low-priority message encapsulation unit, used for slicing low-priority messages, encapsulating message slices respectively to form low-priority message slice packets, and then sending the low-priority message slice packets to a low-priority sending queue; a high-priority message encapsulation unit, used for encapsulating high-priority messages to form high-priority message packets and then sending the high-priority message packets to a high-priority sending queue; and a message sending unit, used for sending message packets in the high-priority sending queue and the low-priority sending queue, and preferentially processing the high-priority sending queue. The data receiving module includes a message parsing and distributing unit, a low-priority message receiving unit, and a high-priority message receiving unit.

A data transmission circuit includes a data sending module and a data receiving module. The data sending module includes a message identification unit, used for sending messages to corresponding encapsulation units according to a priority of message data to be sent; a low-priority message encapsulation unit, used for slicing low-priority messages, encapsulating message slices respectively to form low-priority message slice packets, and then sending the low-priority message slice packets to a low-priority sending queue; a high-priority message encapsulation unit, used for encapsulating high-priority messages to form high-priority message packets and then sending the high-priority message packets to a high-priority sending queue; and a message sending unit, used for sending message packets in the high-priority sending queue and the low-priority sending queue, and preferentially processing the high-priority sending queue. The data receiving module includes a message parsing and distributing unit, a low-priority message receiving unit, and a high-priority message receiving unit.

Disclosed are methods and systems for ranking content. In one aspect, a method of ranking content for display includes identifying, via hardware processing circuitry, interactions by a single account with content pairs, each of the content in the content pairs included in a plurality of content, aggregating, via the hardware processing circuitry, the identified interactions across a plurality of accounts, associating, via the hardware processing circuitry, probabilities with each content in the plurality of content based on the aggregated interactions, ranking, via the hardware processing circuitry, the plurality of content based on the associated probabilities; and selecting, via the hardware processing circuitry, content ranked above a threshold for display.

Disclosed are methods and systems for ranking content. In one aspect, a method of ranking content for display includes identifying, via hardware processing circuitry, interactions by a single account with content pairs, each of the content in the content pairs included in a plurality of content, aggregating, via the hardware processing circuitry, the identified interactions across a plurality of accounts, associating, via the hardware processing circuitry, probabilities with each content in the plurality of content based on the aggregated interactions, ranking, via the hardware processing circuitry, the plurality of content based on the associated probabilities; and selecting, via the hardware processing circuitry, content ranked above a threshold for display.

Disclosed is a mobile device and a control method thereof. The mobile device includes a communication interface configured to perform communication via a network; a display configured to display an image; and a processor. The processor is configured to process a signal transmitted or received by the communication interface, control the display to display the image based on the processed signal, control the communication interface to transmit device information of the mobile device to a server, wherein the mobile device is able to receive a message from a remote device through the communication interface, based on the server receiving reference information indicating that the remote device is set to a condition where the remote device is unable to receive the message, receive the message from the server, wherein the message is received through a counterpart device, and process the message to transmit a command to the remote device, such that the server remotely controls the remote device to transmit information requested by a user of the counterpart device corresponding to the command to the counterpart device.

Disclosed is a mobile device and a control method thereof. The mobile device includes a communication interface configured to perform communication via a network; a display configured to display an image; and a processor. The processor is configured to process a signal transmitted or received by the communication interface, control the display to display the image based on the processed signal, control the communication interface to transmit device information of the mobile device to a server, wherein the mobile device is able to receive a message from a remote device through the communication interface, based on the server receiving reference information indicating that the remote device is set to a condition where the remote device is unable to receive the message, receive the message from the server, wherein the message is received through a counterpart device, and process the message to transmit a command to the remote device, such that the server remotely controls the remote device to transmit information requested by a user of the counterpart device corresponding to the command to the counterpart device.