摘要:
A footstep measuring apparatus and a method thereof are provided. The apparatus includes: a terrestrial magnetism sensor for outputting digital values of each axis according to movements of a body; a reference digital value generator for generating a reference digital value based on N digital values of each axis, (N−1) digital values of each axis, (N−2) digital values of each axis; a reference axis selector for searching N digital value of one axis having a maximum amplitude and selecting the one axis as a reference axis; a digital value determiner for determining whether the N digital value is larger than a reference digital value; and a controller for determining the movement as an ascending movement of one footstep when the N digital value is larger than the reference digital value.
摘要:
A geomagnetic sensor supporting a dip angle detection function. The geomagnetic sensor includes a rotation angle measurement part for measuring pitch and roll angles of the main body with respect to the surface of the Earth; a geomagnetic measurement module for outputting an electric signal corresponding to the geomagnetic field; a memory for storing predetermined reference azimuths and output values of the geomagnetic measurement module corresponding to changes of the pitch and roll angles; and a controller for calculating azimuths by use of the output values of the geomagnetic measurement module, the pitch and roll angles, and predetermined dip angles. The controller establishes at least two dip angles, calculates the azimuth for each dip angle, compares the azimuth to the reference azimuth, and determines a dip angle at the azimuth having a smaller azimuth error as a current dip angle. The geomagnetic sensor can measure a precise dip angle using a simple method.
摘要:
An input apparatus of a display apparatus, a display system, and a control method thereof, are provided herein, the input apparatus including: a communication unit which communicates with the display apparatus; a sensing unit which detects angular speed and acceleration from a motion of the input apparatus; a storage unit which stores position information on a position of the input apparatus; and a controller which calculates the motion information based on the detected angular speed and the position information and transmits the calculated motion information through the communication unit if the input apparatus moves, and updates the position information in the storage unit based on the detected acceleration if the input apparatus does not move.
摘要:
A pointing device calculates a current position of the pointing device based on a point of time at which an incident signal is sensed, and compensates the current position based on a deviation of position of the pointing device which is calculated using the current position of the pointing device. Accordingly, a problem on the GUI caused by position distortion of the pointing device is minimized.
摘要:
A control method includes: receiving a user's input through a touch area of the input device; and recognizing the user's touch input to the touch area through a recognition area of the input device corresponding to the touch area and changing and assigning a range of the recognition area corresponding to the touch area according to a predetermined standard.
摘要:
Provided is an apparatus and method of recognizing a motion that is capable of performing a pointing function and a character input function using motions sensed by an optical sensor and an inertial sensor. The apparatus includes an inertial sensor sensing a first motion by using at least one of acceleration and angular velocity that are generated by an input motion; an optical sensor sensing a second motion by using reflection of light due to the motion; a locus calculating unit calculating the locus of the motion on the basis of the locus of the first motion and the locus of the second motion; and a communication unit transmitting the calculated locus of the motion.
摘要:
A high dynamic range image sensor and a method and medium for measuring charges in a pixel are provided. The high dynamic range image sensor includes a sensor that resets a predetermined pixel when the pixel has reached a saturation level, a storage unit that stores the number of times the pixel has been reset, and a measurement unit that measures the quantity of light received in the pixel using the number of times the pixel has been reset, which is simply referred to as the number of resets, and the quantity of charges remaining after the pixel is finally reset.
摘要:
An input device using a geomagnetic sensor includes a geomagnetic sensor outputting a voltage corresponding to geomagnetism, and a control part calculating an azimuth using the voltage output from the geomagnetic sensor and calculating the rotation angle by comparing the azimuth to a previously measured azimuth, thereby generating the input signal corresponding to the rotation angle when the input device is tilted within a certain range. Accordingly, unwanted generation of the input signal is prevented when the input device is tilted by more than a certain angle.
摘要:
A display device for displaying a cursor according to motion of an input device is provided. The input device comprises an input part which receives pitch angle information and yaw angle information corresponding to motion of an external input device; a computation part which computes a first relative angle corresponding to the information of the pitch angle and a second relative angle corresponding to the information of the yaw angle; a coordinate calculator which calculates a cursor coordinate value which gradually varies according to the changes of the first and second relative angles; and a display which displays a cursor on a position corresponding to the calculated cursor coordinate value. Thus, it is possible to avoid trembling of the cursor caused by noise.
摘要:
A geomagnetic sensor capable of calibrating an accurate azimuth even if the geomagnetic sensor is in a tilting state. The geomagnetic sensor includes a geomagnetism measuring unit, having a drive pulse generating unit for generating a pulse signal and two-axis flux gates provided in X-axis and Y-axis directions which are orthogonal to each other, for outputting voltage values of the two-axis flux gates corresponding to geomagnetism produced by the drive signal, an acceleration sensor for measuring a pitch angle and a roll angle which indicate a tilting degree of the geomagnetic sensor based on X axis and Y axis, and a control unit for calibrating the azimuth by extracting normalization factors by compensating the voltage values outputted from the geomagnetism measuring unit using the pitch angle and the roll angle measured by the acceleration sensor and normalizing the compensated voltage values using the normalization factors.