Playback system, recording medium, and playback control method

A non-transitory computer-readable recording medium storing instructions which, when executed by a processor of an information terminal, cause the processor to perform a process comprising:

• concurrently displaying, on a display screen of the information terminal, a first viewing area and a second viewing area, wherein,
• the first viewing area is reversibly switched between displaying different sets of identification items associated with different content groups of a plurality of content groups, each content group being associated with a particular set of content of a plurality of content;
• and
• the second viewing area displays, concurrently with the first viewing area reversibly switching between displaying different sets of identification items associated with different content groups of the plurality of content groups, a selected set of identification items in the second viewing area, the selected set of identification items associated with a set of selected content, the selected content being selected from one or more content groups according to a selecting operation performed on one or more identification items displayed in the first viewing area;
• transmit playback control information to a display device based on receiving a user-initiated playback instruction input, the playback control information indicating playback settings;
• transmit the selected content corresponding to the selected set of identification items to the display device subsequently to transmitting the playback control information;
• transmit a playback instruction associated with the selected content to the display device based on receiving a notification from the display device indicating that the transmitted selected content has been received and stored at the display device, such that the display device verifies that the selected content is capable of being played back based on the playback control information;
• and
• display a verification result, on the display screen of the information terminal, based on receiving verification result information from the display device, the verification result information indicating that the display device has verified that the selected content is capable of being played back based on the playback control information.

A playback control method, performed by playback system including a display device and an information terminal configured to communicate with the display device, the playback control method comprising:

• concurrently displaying, on a display screen of the information terminal, a first viewing area and a second viewing area, wherein,
• the first viewing area is reversibly switched between displaying different sets of identification items associated with different content groups of a plurality of content groups, each content group associated with a particular set of content of a plurality of content, and
• the second viewing area displays, concurrently with the first viewing area reversibly switching between displaying different sets of identification items associated with different content groups of the plurality of content groups, a selected set of identification items in the second viewing area, the selected set of identification items associated with a set of selected content, the selected content being selected from one or more selected content group according to a selecting operation performed on one or more identification items displayed in the first viewing area;
• transmitting playback control information from the information terminal to the display device based on receiving a user-initiated playback instruction input at the information terminal, the playback control information indicating playback settings;
• transmitting the selected content corresponding to the selected set of identification items from the information terminal to the display device subsequently to transmitting the playback control information;
• transmitting a playback instruction associated with the selected content from the information terminal to the display device based on the information terminal receiving a notification from the display device indicating that the transmitted selected content has been received and stored at the display device;
• transmitting a verification result information from the display device to the information terminal based on the display device receiving the playback instruction and verifying that the selected content is capable of being played back based on the playback control information;
• playing back the selected content at the display device based on the playback settings indicated in the playback control information, subsequently to the transmitting the verification result information;
• and
• displaying a verification result, on the display screen of the information terminal, based on the verification result information received at the information terminal from the display device.