Transmitting display information based on communication protocols

A communication system, comprising:

• a server configured to distribute display information for display on a display device, wherein
• the display information is displayed in synchronization with reproduction of content, and
• the distribution of the display information is based on a first protocol, wherein the first protocol corresponds to a Society of Motion Picture and Television Engineers (SMPTE) protocol;
• and
• a communication device including one or more processors configured to:
• establish a first connection with the server based on a second protocol, wherein the second protocol corresponds to a TCP/IP protocol;
• switch to a waiting state based on the establishment of the first connection in the second protocol;
• receive, in the waiting state, a first message from the server, wherein
• the first message is an announcement message,
• the first message is received from the server in the first protocol based on the establishment of the first connection in the second protocol,
• the first protocol is different from the second protocol, and
• the first message controls a start of distribution of display information from the server;
• switch to a specific communication state from the waiting state based on the received first message;
• receive, in the specific communication state, a second message from the server, wherein
• the second message is received in the first protocol, and
• the second message corresponds to the distribution of the display information in the first protocol;
• determine a type of the received second message;
• process, in the specific communication state, the received second message based on the type of the received second message, wherein the received second message is processed in the first protocol;
• control the server to start the distribution of the display information, wherein the server is controlled based on the determined type of the received second message;
• transmit a connection confirmation message to the server based on the second protocol;
• confirm disconnection from the server based on an unsuccessful reception of a response message from the server within a fixed time period, wherein
• the unsuccessful reception is subsequent to the transmission of the connection confirmation message, and
• the confirmation of the disconnection is subsequent to the establishment of the first connection with the server;
• request establishment of a second connection with the server based on
• the second protocol, and
• the confirmation of the disconnection from the server;
• switch from the waiting state to an initial state based on a failure of reception of the announcement message within a first time period;
• determine a second time period has elapsed after the switch from the waiting state to the initial state;
• and
• establish a third connection with the server based on the second protocol and the determination that the second time period has elapsed.

A control method, comprising:

• in a communication device:
• establishing a first connection with a server based on a first protocol, wherein the first protocol corresponds to a TCP/IP protocol;
• switching to a waiting state based on the establishment of the first connection in the first protocol;
• receiving, in the waiting state, a first message from the server, wherein
• the first message is an announcement message,
• the first message is received from the server in a second protocol based on the establishment of the first connection in the first protocol,
• the second protocol corresponds to a Society of Motion Picture and Television Engineers (SMPTE) protocol,
• the second protocol is different from the first protocol,
• the first message controls a start of distribution of display information from the server, and
• the display information is displayed on a display device in synchronization with reproduction of content;
• switching to a specific communication state from the waiting state based on the received first message;
• receiving, in the specific communication state, a second message from the server, wherein
• the second message is received in the second protocol, and
• the second message corresponds to the distribution of the display information in the second protocol;
• determining a type of the received second message;
• processing, in the specific communication state, the received second message based on the type of the received second message, wherein the received second message is processed in the second protocol;
• controlling the server to start the distribution of the display information for display on the display device, wherein
• the server is controlled based on the determined type of the received second message;
• transmitting a connection confirmation message to the server based on the first protocol;
• confirming disconnection from the server based on an unsuccessful reception of a response message from the server within a fixed time period, wherein
• the unsuccessful reception is subsequent to the transmission of the connection confirmation message, and
• the confirmation of the disconnection is subsequent to the establishment of the first connection with the server;
• requesting establishment of a second connection with the server based on
• the first protocol, and
• the confirmation of the disconnection from the server;
• switching from the waiting state to an initial state based on a failure of reception of the announcement message within a first time period;
• determining a second time period has elapsed after the switch from the waiting state to the initial state;
• and
• establishing a third connection with the server based on the first protocol and the determination that the second time period has elapsed.

A non-transitory computer-readable medium having stored thereon computer-executable instructions that, when executed by a processor, cause the processor to execute operations, the operations comprising:

• establishing a first connection with a server based on a first protocol, wherein the first protocol corresponds to a TCP/IP protocol;
• switching to a waiting state based on the establishment of the first connection in the first protocol;
• receiving, in the waiting state, a first message from the server, wherein
• the first message is an announcement message,
• the first message is received from the server in a second protocol based on the establishment of the first connection in the first protocol,
• the second protocol corresponds to a Society of Motion Picture and Television Engineers (SMPTE) protocol,
• the second protocol is different from the first protocol,
• the first message controls a start of distribution of display information from the server, and
• the display information is displayed on a display device in synchronization with reproduction of content;
• switching to a specific communication state from the waiting state based on the received first message;
• receiving, in the specific communication state, a second message from the server, wherein
• the second message is received in the second protocol, and
• the second message corresponds to the distribution of the display information in the second protocol;
• determining a type of the received second message;
• processing, in the specific communication state, the received second message based on the type of the received second message, wherein the received second message is processed in the second protocol;
• controlling the server to start the distribution of the display information for display on the display device, wherein
• the server is controlled based on the determined type of the received second message;
• transmitting a connection confirmation message to the server based on the first protocol;
• confirming disconnection from the server based on an unsuccessful reception of a response message from the server within a fixed time period, wherein
• the unsuccessful reception is subsequent to the transmission of the connection confirmation message, and
• the confirmation of the disconnection is subsequent to the establishment of the first connection with the server;
• requesting establishment of a second connection with the server based on
• the first protocol, and
• the confirmation of the disconnection from the server;
• switching from the waiting state to an initial state based on a failure of reception of the announcement message within a first time period;
• determining a second time period has elapsed after the switch from the waiting state to the initial state;
• and
• establishing a third connection with the server based on the first protocol and the determination that the second time period has elapsed.