Abstract: The present invention relates to a wireless mouse system. Particularly, the present invention relates to a wireless mouse system in which includes a controller, which controls a receiver and a flash memory device integrated into an interfacing device, can be performed function of the receiver and the flash memory device smoothly. A wireless mouse system comprises a wireless mouse and an interfacing device with a USB terminal, electrically communicated with a USB port of a information-displaying device. The interfacing device comprises a receiver receiving a signal data transferred wirelessly from the wireless mouse, and transferring the signal data to the information-displaying device, a flash memory device exchanging data with the information-displaying device through the USB terminal and a controller controlling the receiver and the flash memory device, and transferring optionally the signal of the receiver and the flash memory device to the information-displaying device.

Abstract: The present invention is directed to a method of playing music in a music player comprising: (a) arranging a plurality of music files saved in a memory in a first order; (b) playing the music files according to the order; (c) inputting a conversion signal while the music files are played in the order; and (d) playing the music files in a second order opposite to the first order according to a conversion signal. Also, the present invention is directed to a music player comprising: a music playing unit of recognizing and playing a plurality of music files; and a selection unit of inputting a conversion signal to play the music files forward or backward.

Abstract: The present invention relates to a wireless mouse system. Particularly, the present invention relates to a wireless mouse system in which includes a controller, which controls a receiver and a flash memory device integrated into an interfacing device, can be performed function of the receiver and the flash memory device smoothly. A wireless mouse system comprises a wireless mouse and an interfacing device with a USB terminal, electrically communicated with a USB port of a information-displaying device. The interfacing device comprises a receiver receiving a signal data transferred wirelessly from the wireless mouse, and transferring the signal data to the information-displaying device, a flash memory device exchanging data with the information-displaying device through the USB terminal and a controller controlling the receiver and the flash memory device, and transferring optionally the signal of the receiver and the flash memory device to the information-displaying device.

Abstract: Disclosed herein is an electric puff, intended to rapidly and easily apply various types of cosmetics to a desired body part. A conventional puff is problematic in that a user must dab a surface covered with a cosmetic on a desired body part by hand, so that it is very complicated to do a user's makeup, and besides, it is difficult to keep a user's force constant, so that the cosmetic may not be evenly applied to the desired body part. The electric puff of this invention is constructed so that an actuating shaft is swingably coupled to an electric motor installed in a handle-shaped casing via a drive gear and a conversion gear and a puff head is coupled to an upper end of the actuating shaft, thus allowing a cosmetic to be evenly applied to a desired body part with a constant force although a user does not reciprocate the puff by hand, therefore allowing the user to rapidly and easily put on makeup, and allowing the cosmetic to be effectively applied to the desired body part.