US Patent 11422378 Control method for display device and control device

A control method for a display device executed by a control device includes receiving imaging data generated by an imaging device, which sets at least a part of a visual field of a user as an imaging target region, capturing an identification image displayed on a display surface by the display device, the identification image including identification information for identifying the display device, determining, as an operation target device, the display device indicated by the identification information included in the imaging data, and transmitting an operation signal based on operation by the user to the operation target device.