Audio/Video apparatus for visualizing operations therein, or thereamong in the form of contents flow and a method operation controlling thereof

The A / V apparatus within or A / V device for visualizing the operating state of the A / V content between devices in the flow of its operation and control method are disclosed. A / V equipment according to the present invention includes a controller that functions to provide a plurality of modules and each module constituting the OSD processing unit and the A / V device to process the predetermined information (On Screen Display) OSD control the OSD processing unit to OSD-process and a. As a result, the user can easily grasp the behavior between the A / V device or internal A / V equipment, it is possible to provide the user with convenience on the operability. A / V device, OSD, the content flow