Abstract: The present disclosure relates to a clock generator and a display device including the same. The clock generator includes a first clock generation circuit configured to output a clock, data, and a timing control signal; a first wiring through which the clock is serially transmitted; a second wiring through which the data is serially transmitted; a third wiring through which a pulse of the timing control signal is serially transmitted; a second clock generation circuit connected to the first clock generation circuit through the first wiring, the second wiring, and the third wiring and configured to generate pre-clocks in which phases are sequentially shifted based on the data and the clock; and a clock adjustment circuit configured to receive the pulse of the timing control signal and the pre-clock and output an output clock.

Abstract: Provided is a display device including a display panel, an optical sensor, a timing controller, a scan driver, a data driver, and an image controller. The timing controller controls an image refresh rate of the display panel based on a refresh rate control signal. Thus, the display device provides improved visibility.

Abstract: The present invention relates to a method of displaying contents by using a device identifier of a wireless communication device, and a method of providing contents. The contents displaying method includes: receiving the device identifier from the wireless communication device if the device is located within a coverage thereof; and receiving and displaying at least one content corresponding to the device identifier from a contents providing system.

Abstract: The present invention relates to a method of displaying contents by using a device identifier of a wireless communication device, and a method of providing contents. The contents displaying method includes: receiving the device identifier from the wireless communication device if the device is located within a coverage thereof; and receiving and displaying at least one content corresponding to the device identifier from a contents providing system.

Abstract: A method for authenticating a user of certain service provided by a system through a first communication channel, in one aspect including receiving an access request from a first terminal of the user through the first communication channel; receiving an address or number of a second terminal of the user through the first communication channel; transferring data including an identification code, to the second terminal of the user through a second communication channel; receiving a user confirmation response, including the user identification code, from the second terminal of the user through the second communication channel; determining whether the identification code transferred to the second terminal is identical to the user identification code received from the second terminal; generating an authentication code if it is determined that both the user identification codes are identical to each other; transferring the user authentication code to the first terminal of the user through the first communication ch

Abstract: A system and method of providing virtual identification information which can securely perform a predetermined control process online or offline using virtual identification information, without directly exposing personal information, is provided. The method of providing virtual identification information includes: exposing an output medium having an identification code to a user being associated with a request of the user; receiving personal information of the user along with the identification code from the user; generating virtual identification information using the inputted identification code and personal information, and transmitting the generated virtual identification information to the user; and performing a predetermined control process which corresponds to a request of the user as a result that the transmitted virtual identification information is inputted to the exposed output medium by the user.

Abstract: A method for authenticating a user of certain service provided by a system through a first communication channel, in one aspect including receiving an access request from a first terminal of the user through the first communication channel; receiving an address or number of a second terminal of the user through the first communication channel; transferring data including an identification code, to the second terminal of the user through a second communication channel; receiving a user confirmation response, including the user identification code, from the second terminal of the user through the second communication channel; determining whether the identification code transferred to the second terminal is identical to the user identification code received from the second terminal; generating an authentication code if it is determined that both the user identification codes are identical to each other; transferring the user authentication code to the first terminal of the user through the first communication ch