Abstract: A demand response (DR) system includes a DR control unit to generate different DR levels having different power rates for each power unit, and transmit a current DR level, and a household appliance to receive the DR level from the DR control unit, and differentially control energy output of a product in response to the received DR level so as to reduce power consumption of the product. As a result, the DR system reduces power consumption when power rates are high so as to reduce electricity bills.

Abstract: A demand response (DR) system includes a DR control unit to generate different DR levels having different power rates for each power unit, and transmit a current DR level, and a household appliance to receive the DR level from the DR control unit, and differentially control energy output of a product in response to the received DR level so as to reduce power consumption of the product. As a result, the DR system reduces power consumption when power rates are high so as to reduce electricity bills.

Abstract: A demand response (DR) system includes a DR control unit to generate different DR levels having different power rates for each power unit, and transmit a current DR level, and a household appliance to receive the DR level from the DR control unit, and differentially control energy output of a product in response to the received DR level so as to reduce power consumption of the product. As a result, the DR system reduces power consumption when power rates are high so as to reduce electricity bills.

Abstract: An apparatus and method connect a function-extending module and a base module installed in an audio/video (AV) system reproducing various AV source data. The apparatus connects a function-extending module, which is detachably inserted into a module rack, to a base module capable of reproducing AV data to be communicated between the function-extending module and the base module. The apparatus includes a detecting unit for detecting the installation of function-extending module(s) in the module rack, a switching unit for connecting the base module and the function-extending module(s) and for connecting function-extending modules to each other, and a control unit for controlling the switching unit so that the function-extending module(s) is (are) connected to the base module in a daisy-chain fashion according to a detection signal from the detecting unit.

Abstract: An apparatus and method connect a function-extending module and a base module installed in an audio/video (AV) system reproducing various AV source data. The apparatus connects a function-extending module, which is detachably inserted into a module rack, to a base module capable of reproducing AV data to be communicated between the function-extending module and the base module. The apparatus includes a detecting unit for detecting the installation of function-extending module(s) in the module rack, a switching unit for connecting the base module and the function-extending module(s) and for connecting function-extending modules to each other, and a control unit for controlling the switching unit so that the function-extending module(s) is (are) connected to the base module in a daisy-chain fashion according to a detection signal from the detecting unit.

Abstract: An audio/video (A/V) system and function-extending modules therefor are provided. The A/V system has a module rack, in which the function-extending modules are detachably inserted, and a base module. Each of the function-extending module sends and receives A/V data and stores control information for controlling itself. The base module receives the control information from the function-extending modules mounted in the module rack and displays the control information. If a user input according to the displayed control information is received, the base module sends the user input to a corresponding function-extending module and reproduces source A/V data provided by the function-extending module in response to the sent user input. By doing so, the A/V system in which a plurality of digital media is implemented is provided.