Character input device using bio radar unit and tilt sensor
First Claim
1. A character input device for a mobile device or a wearable terminal, comprising:
- a bio radar unit configured to transmit a signal toward a fingertip of a finger of a user and to measure the strength of a signal reflected from the fingertip;
a tilt sensor configured to sense a tilt of hands of the user;
a microprocessor configured to calculate final input information of the user by processing signals received from the bio radar unit and the tilt sensor; and
a wireless communication module configured to transmit the final input information to the mobile device or the wearable terminal of the user, wherein,the microprocessor is configured to calculate a direction of the finger, based on a ratio between a total scan period of the bio radar unit and a period of time taken to perceive the fingertip, and to calculate a distance to the fingertip, based on the strength of the reflected signal,the microprocessor is configured to detect the input of a special key according to the tilt measured by the tilt sensor,the microprocessor, when three or more of the fingers are detected as input, is configured to process this case as a character input error and not determine the input character,the microprocessor, when two of the finders are detected as input, is configured to detect fingertip thickness information of each of the fingers, and to obtain final input information by comparing the detected fingertip thickness information to the fingertip thickness information of the reference information,when
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Accused Products
Abstract
Disclosed herein is a character input device for a mobile device or a wearable terminal. A bio radar unit senses the positions of the fingers of a user. A tilt sensor senses the tilt of the hands of the user. A microprocessor calculates the final input information of the user by processing signals received from the bio radar unit and the tilt sensor. A wireless communication module transmits the final input information to the mobile device or the wearable terminal of the user. A speaker device outputs a feedback sound corresponding to the final input information of the user. The character input device is wearable on a wrist of the user. The bio radar unit transmits a signal, measures the distance between the character input device and a finger by measuring the strength of a reflected wave reflected from the finger with which the signal collides, and measures the angle of the finger related to activation.
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Citations
6 Claims
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1. A character input device for a mobile device or a wearable terminal, comprising:
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a bio radar unit configured to transmit a signal toward a fingertip of a finger of a user and to measure the strength of a signal reflected from the fingertip; a tilt sensor configured to sense a tilt of hands of the user; a microprocessor configured to calculate final input information of the user by processing signals received from the bio radar unit and the tilt sensor; and a wireless communication module configured to transmit the final input information to the mobile device or the wearable terminal of the user, wherein, the microprocessor is configured to calculate a direction of the finger, based on a ratio between a total scan period of the bio radar unit and a period of time taken to perceive the fingertip, and to calculate a distance to the fingertip, based on the strength of the reflected signal, the microprocessor is configured to detect the input of a special key according to the tilt measured by the tilt sensor, the microprocessor, when three or more of the fingers are detected as input, is configured to process this case as a character input error and not determine the input character, the microprocessor, when two of the finders are detected as input, is configured to detect fingertip thickness information of each of the fingers, and to obtain final input information by comparing the detected fingertip thickness information to the fingertip thickness information of the reference information, when - View Dependent Claims (2, 3, 4, 5, 6)
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Specification