Abstract: A non-contact interface device for a vehicle and a method for controlling the same, may display an operation system menu for a driver and passengers to operate various kinds of devices of the vehicle as a hologram, enable a user to operate the displayed operation system menu in a non-contact manner by use of the user's finger or the like, and provide the user with a tactile feedback for a non-contact operation, so that the user can recognize whether to have operated the menu.

Abstract: A compound according to an embodiment of the present disclosure is represented by Formula 1. An electrolyte for a lithium secondary battery according to an embodiment of the present disclosure may include the compound, and a lithium secondary battery according to an embodiment of the present disclosure may include the electrolyte.

Abstract: A compound according to an embodiment of the present disclosure is represented by Formula 1. An electrolyte for a lithium secondary battery according to an embodiment of the present disclosure may include the compound, and a lithium secondary battery according to an embodiment of the present disclosure may include the electrolyte.

Abstract: The present invention is directed to a membership-based digital mutual cooperation system and method in which the members of a mutual cooperation group are organized based on a network membership system in which the numbers of provisions of maintenance benefits and recommendation benefits are limited, business profits are generated by mediating products or services that members want to purchase via a joint purchase method, and the generated business profits are distributed to the members of the network membership system in a virtuous-circle fashion. In the membership-based digital mutual cooperation system and method according to the present invention, virtuous-circle relationships are established among all members including a first seller, intermediate sellers, and consumers.

Abstract: A doorbell apparatus and a method of controlling power supply to a doorbell apparatus are provided. The doorbell apparatus may include a power supplier, a battery device charged with power from the power supplier device, a doorbell controller driven using the power from the power supplier device or the power charged in the battery device, and a power supply controller configured to control supply of power to the doorbell controller according to whether the power is input from the power supplier device.

Abstract: A doorbell apparatus and a method of controlling power supply to a doorbell apparatus are provided. The doorbell apparatus may include a power supplier, a battery device charged with power from the power supplier device, a doorbell controller driven using the power from the power supplier device or the power charged in the battery device, and a power supply controller configured to control supply of power to the doorbell controller according to whether the power is input from the power supplier device.