Patent attributes
A method is provided that includes receiving, from a voice input apparatus associated with a first target device among a plurality of target devices, instruction information that includes first voice information indicating an operation instruction for any target device, and recognizing the operation instruction from the first voice information included in the received instruction information. The method also includes specifying the first target device by referencing a first database, and determining whether second voice information indicating an operation object for the operation instruction is included in the instruction information. The method further includes transmitting, (i) when the second voice information is not included in the instruction information, a first control command for executing the recognized operation instruction to the first target device, and (ii) when the second voice information is included in the instruction information, the first control command to a second target device associated with the operation object.