KEYBOARD ENABLING INPUTTING OF POSITION INFORMATION AND KEYBOARD SYSTEM COMPRISING SAME

摘要

Disclosed are a position information inputting keyboard and a keyboard system including the same. A reference signal receiving unit and ultrasonic signal receiving units are installed on a side surface of a keyboard having thereon a keypad.;A reference signal and ultrasonic signals generated from an electronic pen are received, so that a position of the electronic pen can be measured. Thus, a user can input both key input information and position information to an electronic device such as a smart pad or a notebook, using the keyboard.

主权项

1. A keyboard, comprising:
a housing having a keypad unit on an upper surface thereof; a reference signal receiving unit installed on a side surface or a front surface of the housing, and configured to receive a reference signal from an electronic pen; a plurality of ultrasonic signal receiving units installed on a side surface or a front surface of the housing with a distance therebetween, and configured to receive ultrasonic signals from the electronic pen; a position measuring unit installed in the housing, and configured to measure a position of the electronic pen, based on times when a reference signal and ultrasonic signals have been received by the reference signal receiving unit and the ultrasonic signal receiving units, respectively; and a keyboard control unit configured to transmit key input information input from the keypad unit, and position information input from the position measuring unit, to an electronic device.