Abstract: A method and apparatus for measuring the biological condition of an animal by acquiring and analyzing its biological signals are provided. The biological signals from skin temperature, a photoplenthysmogram (PPG), an electrocardiogram (ECG), electrodermal activity (EDA), an electromyogram (EMG), and an electrogastrogram (EGG) are detected using a biological signal detection unit which is attached to the animal's skin. Feature vectors, including the mean heart rate of the photoplenthysmogram and its standard deviation, the very low frequency, low frequency, and high frequency components of heart rate variability, the frequency and mean amplitude of skin conductance responses, and the mean and maximum skin temperatures, are extracted from the detected biological signals.

Abstract: A human body communication system. The human body communication system includes a controlled device measuring a capacitance that corresponds to the distance to a human body, and transmitting information on the measured capacitance through a wireless medium; and a control device receiving the information, and then, based on the information, determining a transmission power and, with the determined transmission power, transmitting a control command of a user to the controlled device using the human body as a medium.

Abstract: An autonomous mobile robot and a method of controlling the same, A mobile robot includes: a light-emitting unit projecting light onto a target position on a motion surface, on which the robot moves under control of a user; a position coordinate calculation unit calculating position coordinates of the target position based on a distance between a body of the robot and a target position onto which the light-emitting unit projects light; and a driving unit moving the robot according to the calculated position coordinates of the target position.

Abstract: A method and apparatus for reckoning a position of a moving robot using dead-reckoning and range sensing. The method includes performing dead-reckoning to determine a variation state in accordance with motion of the moving robot, calculating an absolute position of the moving robot by sensing a distance between the moving robot and at least one fixed position, predicting an optimized current position of the moving robot using the variation state and the absolute position, determining whether the optimized current position is within a specified effective area, and correcting the optimized current position in accordance with the determined result.

Abstract: Disclosed herein are a method and apparatus to induce sound sleep and waking, selecting a protocol to control a sound sleep and waking environment depending on a sleep type selected by a user; adjusting the sleep environment of the user according to the selected protocol; determining a sleep state of the user by measuring physiological signals of the user during sleep in the sleep environment using a sensor which does not contact a body of the user; detecting variation in the physiological signals of the user; and re-adjusting the sleep environment by changing parameters of the protocol depending on the detected variation in the physiological signals. As a result, there is an advantage in that it is possible to naturally induce sound sleep and waking.

Abstract: Provided are a method, system, and medium for estimating a location of a remote controller using ultrasonic waves. The method includes receiving a plurality of signals transmitted from the remote controller, measuring time delays between an infrared signal and ultrasonic signals included in each of the received signals, estimating the location of the remote controller with respect to each of the received signals using the measured time delays, and estimating the final location of the remote controller based on the estimated locations of the remote controller.

Abstract: A method and apparatus for processing a line pattern using a convolution kernal. An apparatus for processing a line pattern, the apparatus including a light source module radiating predetermined light and a camera module capturing an image of an object, onto which the light is radiated, the apparatus processing a line pattern included in the captured image, includes: a kernel learning unit determining a kernel shape and an optimal threshold value with respect to each vertical interval of the image using a simple line pattern formed at a predetermined location; a convolution application unit applying convolution to a captured test image using the determined kernel shape and optimal threshold value; and a region selection unit scanning each pixel column in the image, to which the convolution is applied, in a vertical direction, and setting pixel values of pixel groups other than a selected pixel group to 0 when a plurality of pixel groups having pixel values other than 0 exists.

Abstract: A system and method extracting a corner point in a space using pixel information obtained from a camera are provided. The corner point extracting system includes a light generation module emitting light in a predetermined form (such as a plane form), an image acquisition module acquiring an image of a reflector reflecting the light emitted from the light generation module, and a control module obtaining distance data between the light generation module and the reflector using the acquired image and extracting a corner point by performing split-merge using a threshold proportional to the distance data. The threshold is a value proportional to the distance data which corresponds to pixel information of the image acquisition module.

Abstract: The present invention relates to an apparatus and method capable of detecting a heartbeat using a photoplethysmography (PPG) even under a motion of a user. A primary object of the present invention is to allow the heartbeat of the user to be effectively detected from a PPG signal even under the motion. The object of the present invention is accomplished by the following process of acquiring the PPG signal from the user through a PPG sensor unit, detecting candidate heartbeat sequences from the PPG signal after calculating an expected mean interbeat interval through a signal processing technique based on the wavelet transformation and an autocorrelation function, and extracting an optimal heartbeat sequence or mean heart rate from the candidate heartbeat sequences.

Abstract: An apparatus and method to detect a blood flow signal free from a motion artifact, and a stress test apparatus using the same, enhance data reliability of the blood flow signal by removing the motion artifact from the blood flow signal detected by photo-plethysmography. The apparatus to detect the blood flow signal includes a base pattern correlation coefficient calculating unit to determine peak points in the blood flow signal sensed from a body of an examinee using a blood flow sensing unit, and to calculate correlation coefficients of each peak point using a predetermined base pattern, and a motion artifact processing unit to determine the motion artifact using the calculated correlation coefficients and to remove the motion artifact from the blood flow signal. Thus, reliability of the blood flow signal is enhanced by effectively removing the motion artifact from the blood flow signal detected by the photo-plethysmography.

Abstract: An object growth control system and method are provided. The object growth control system includes a weighting unit, a growth state analyzer, and an object operation controller. The weighting unit detects external environments and a user's state, loads weights on predetermined user emotional states, predetermined object growth tendencies, and predetermined object emotional states according to the result of detection and the user's tendency, and outputs the results of loading of the weights as state data. The growth state analyzer applies a predetermined statistical model to the state data input for a predetermined period to analyze the user's tendency and outputs a degree of education on the object with respect to the user's tendency based on the state data to which the predetermined statistical model has been applied.

Abstract: A microphone array system including an input unit to receive sound signals using a plurality of microphones; a frequency splitter splitting each sound signal received into a plurality of narrowband signals; an average spatial covariance matrix estimator using spatial smoothing to obtain a spatial covariance matrix for each frequency component of the sound signal, by which spatial covariance matrices for a plurality of virtual sub-arrays, which are configured in the plurality of microphones, are obtained with respect to each frequency component of the sound signal and an average spatial covariance matrix is calculated; a signal source location detector to detect an incidence angle of the sound signal according to the average spatial covariance matrix calculated; a signal distortion compensator to calculates a weight for each frequency component of the sound signal based on the incidence angle of the sound signal and multiply the calculated weight by each frequency component.

Abstract: A method and apparatus allowing a mobile robot to return to a designated location the method including: calculating a first direction angle of the mobile robot at a second location arrived at after the mobile robot travels a predetermined distance from the first location; determining whether the mobile robot approaches or moves away from the designated location, at a third location arrived at after the mobile robot rotates by the first direction angle and then travels a predetermined distance; and if the result of the determination indicates that the mobile robot approaches the docking station, controlling the mobile robot to travel according to the first direction angle, and if the result indicates the mobile robot moves away from the docking station, calculating a second direction angle of the mobile robot at the third location, and controlling the mobile robot to travel according to the second direction angle.

Abstract: Disclosed herein is a mobile robot, and system and method for autonomous navigation of the same. The mobile robot includes a communications module for transmitting a light source control signal to selectively control light sources of a landmark array to flicker, an image processing module for calculating image coordinates of the light sources from an image signal, a pose calculation module for calculating position coordinates of the mobile robot, a motion control module for calculating a moving path and controlling the mobile robot to move along the moving path, and a main control module for controlling interoperations of the modules and general operations of the mobile robot.

Abstract: A method and apparatus generating and tracing a cleaning trajectory of a home cleaning robot the method including: controlling the home cleaning robot to straightly travel as much as a set distance from the docking station and then rotationally travel, maintaining the set distance from the docking station, until the home cleaning robot reaches one of two walls; controlling the home cleaning robot to travel as much as the set distance along the wall if the home cleaning robot reaches the wall and resume rotational-traveling around the docking station, maintaining a distance between the docking station and the home cleaning robot increased by the set distance until it reaches one of the two walls; and repeatedly controlling the home cleaning robot to travel as much as the set distance along the wall if the home cleaning robot reaches the wall and resume rotational-traveling around the docking station, maintaining a distance between the docking station and the home cleaning robot increased by the set distance un

Abstract: A robot localization system is provided. The robot localization includes a robot, which moves within a predetermined space and performs predetermined tasks, and a docking station corresponding to a home position of the robot. The docking station includes a first transmitting unit, which transmits a sound wave to detect a position of the robot; and a second transmitting unit, which transmits a synchronizing signal right when the sound wave is transmitted.

Abstract: An apparatus and method for perceiving a physical and emotional state, which allows easy attachment to and detachment from a human body, and through which a bio-signal is simply detected, are provided. The apparatus includes a bio-signal detection part attached to a predetermined portion of a body for performing analog signal processing on at least one bio-signal detected from the body and outputting the processed bio-signal, and a bio-signal recognizing part for performing digital signal processing on the processed bio-signal received from the bio-signal detection part, perceiving the physical and emotional state from the result of the digital signal processing, and representing the physical and emotional state.

Abstract: The present invention relates to an apparatus and method capable of detecting a heartbeat using a photoplethysmography (PPG) even under a motion of a user. A primary object of the present invention is to allow the heartbeat of the user to be effectively detected from a PPG signal even under the motion. The object of the present invention is accomplished by the following process of acquiring the PPG signal from the user through a PPG sensor unit, detecting candidate heartbeat sequences from the PPG signal after calculating an expected mean interbeat interval through a signal processing technique based on the wavelet transformation and an autocorrelation function, and extracting an optimal heartbeat sequence or mean heart rate from the candidate heartbeat sequences.

Abstract: A method and apparatus for measuring the biological condition of an animal by acquiring and analyzing its biological signals are provided. The biological signals from skin temperature, a photoplenthysmogram (PPG), an electrocardiogram (ECG), electrodermal activity (EDA), an electromyogram (EMG), and an electrogastrogram (EGG) are detected using a biological signal detection unit which is attached to the animal's skin. Feature vectors, including the mean heart rate of the photoplenthysmogram and its standard deviation, the very low frequency, low frequency, and high frequency components of heart rate variability, the frequency and mean amplitude of skin conductance responses, and the mean and maximum skin temperatures, are extracted from the detected biological signals.

Abstract: Disclosed is an emotion recognition apparatus and method thereof which enables perception of a user's emotional state by monitoring one or more of his or her physiological signals. The emotion recognition apparatus comprises a feature analyzer adapted to analyze features of the physiological signals acquired from a user and generate feature values, a subtractor adapted to obtain differences between the feature values generated by the feature analyzer and feature values used as a standard to perceive an emotional state of the user, and an emotion classifier adapted to analyze the differences obtained by the subtractor and classify an emotion into a plurality of emotional categories so as to perceive an emotional category exhibiting the greatest intensity to be the emotional state of the user.