Patent ID: 7576790

Claim:
A control apparatus which is connected to at least one terminal device to control the terminal device, comprising: a communication unit which communicates with the terminal device; a display unit which displays an operation window for controlling the terminal device; an information acquisition unit which acquires, from the terminal device through the communication unit, at least information concerning operation of the terminal device and at least one operation object to be displayed on the display unit for operation; an arranging unit which arranges the operation object to produce an operation window which is displayed on the display unit and is stored in the control apparatus; and a command generating unit which generates a control command for controlling the terminal in accordance with operation on an operation window displayed on the display unit, wherein when the operation object on the operation window is operated, the command generating unit generates at least information which specifies the operation object which has been operated and a control command including information concerning an operation amount of the object, and the communication unit transmits the control command to the terminal device, wherein the operation object is image data of a control object to be displayed on the operation window, and wherein the information concerning operation of the terminal device includes information that designates (A) which area of the operation window the control object is to be placed and (B) the size of the control object.