Abstract: A display control method and device are discussed. According to one aspect, the method includes dividing a screen into a first display region, on which a first broadcast signal is displayed, and a second display region having at least one sub screen, on which a second broadcast signal is displayed, the second broadcast signal being received in response to a channel searching command; and displaying a moving picture on the second display region when the user selects a second display mode, wherein the first display region is overlapped with the second display region, and wherein an on screen display (OSD) having direction key menus responsive to the control command is displayed in order to control the position of display region of the second display region.

Abstract: A broadcasting receiver and a power supply control method based on an operation mode are disclosed. Power supply is cut off to a data transmission/reception processing block corresponding to a mode, not determined as the operation mode. Therefore, it is possible to prevent unnecessary power consumption and lengthen the lifetime of the broadcasting receiver.

Abstract: A method included a receiving a request that includes information that defines a service type and information that can identify the request for this service type, wherein the request is required in order to initiate a flow over an extended channel; checking whether the extended channel can support the flow of the requested service type; and responding to the request, wherein the response includes information of the service type and information on whether the external channel can support the flow of the requested service type.