Abstract: A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIGfield.

Abstract: Provided are an electronic shelf label, an electronic shelf label system, and an electronic shelf label method. The electronic shelf label includes a power supply unit configured to provide driving power to one or more terminals, a communication interface configured to provide a display signal to the one or more terminals, a terminal selection unit configured to select a terminal to be controlled among the one or more terminals, and a controller configured to control the terminal selection unit so as to select the terminal to be controlled and generate the display signal.

Abstract: Provided are an electronic shelf label, an electronic shelf label system, and an electronic shelf label method. The electronic shelf label includes a power supply unit configured to provide driving power to one or more terminals, a communication interface configured to provide a display signal to the one or more terminals, a terminal selection unit configured to select a terminal to be controlled among the one or more terminals, and a controller configured to control the terminal selection unit so as to select the terminal to be controlled and generate the display signal.

Abstract: A light emitting device is provided. The light emitting device may include a plurality of light emitting array modules each including at least one light emitting element, and a common driving module commonly connected to the plurality of light emitting array modules and configured to supply an operating voltage to each of the connected light emitting array modules. Each of the plurality of light emitting array modules may include a light emitting module including the at least one light emitting element and an individual driving module configured to receive the operating voltage supplied from the common driving module and output an operating current to the light emitting module based on the received operating voltage.

Abstract: A light emitting device is provided. The light emitting device may include a plurality of light emitting array modules each including at least one light emitting element, and a common driving module commonly connected to the plurality of light emitting array modules and configured to supply an operating voltage to each of the connected light emitting array modules. Each of the plurality of light emitting array modules may include a light emitting module including the at least one light emitting element and an individual driving module configured to receive the operating voltage supplied from the common driving module and output an operating current to the light emitting module based on the received operating voltage.