INPUT DEVICE FOR FOLDABLE DISPLAY DEVICE AND INPUT METHOD THEREOF
First Claim
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1. An apparatus, comprising:
- an electronic pen configured to generate an ultrasonic signal and an infrared signal; and
a terminal comprising a foldable display unit, the terminal configured to detect the ultrasonic signal and the infrared signal, and to determine coordinate information of the electronic pen based on the ultrasonic signal, the infrared signal, and a folding angle of the foldable display unit.
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Abstract
An input apparatus including an electronic pen and a terminal having a foldable display unit is provided. An electronic pen generates an ultrasonic signal and an infrared signal. A terminal detects the ultrasonic signal and the infrared signal and calculates coordinate information of the electronic pen based on the received ultrasonic signal and the infrared signal. The terminal determines coordinate information of the electronic pen with respect to the foldable display unit by measuring a folding angle of the foldable display unit.
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Citations
17 Claims
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1. An apparatus, comprising:
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an electronic pen configured to generate an ultrasonic signal and an infrared signal; and a terminal comprising a foldable display unit, the terminal configured to detect the ultrasonic signal and the infrared signal, and to determine coordinate information of the electronic pen based on the ultrasonic signal, the infrared signal, and a folding angle of the foldable display unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An input method of an apparatus comprising an electronic pen and a terminal having a foldable display unit, the input method comprising:
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determining a first distance between a first ultrasonic sensor unit of the terminal and the electronic pen in response to the first ultrasonic sensor unit detecting an ultrasonic signal generated by the electronic pen; determining a second distance between a second ultrasonic sensor unit of the terminal and the electronic pen in response to the second ultrasonic sensor unit detecting the ultrasonic signal; detecting a third distance between an infrared sensor unit of the terminal and the electronic pen in response to the infrared sensor unit detecting an infrared signal generated by the electronic pen; calculating a fifth distance, the fifth distance being a shortest distance between the electronic pen and a first side of the display unit, the first ultrasonic sensor, the second ultrasonic sensor, and the infrared sensor being situated on the first side, wherein the fifth distance is calculated using the first distance, the second distance, the third distance, and a fourth distance between the first ultrasonic sensor and the second ultrasonic sensor; determining a folding angle of the foldable display unit; and calculating coordinate information on the display unit of the electronic pen by using the folding angle, the fifth distance, and a straight distance between an edge of the first side and a point where the display unit is folded. - View Dependent Claims (9, 10, 11)
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12. An apparatus, comprising:
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an electronic pen configured to generate at least one signal; and a terminal comprising a foldable display unit, the terminal configured to detect the at least one signal and determine coordinate information of the electronic pen based on the at least one signal and a folding angle of the foldable display unit. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification