Abstract: A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the portable terminal by using at least one of the detected acceleration and angular velocity, determines that the portable terminal makes the swinging motion when the magnitude of the swinging motion is equal to or greater than a predetermined value, determines a carrying position of the portable terminal in the pedestrian's body by using at least one of the detected acceleration and angular velocity, and estimates a step length of the pedestrian according to the determined carrying position of the portable terminal.

Abstract: A method of implementing a location-based service within a building is provided. The method includes receiving, from at least one electronic device, a plurality of data sets indicating information of wireless signals which the at least one electronic device measures for each time or for each location within the building; determining a similarity between the plurality of data sets; generating a logical path by integrating similar data sets; and generating a wireless signal map within the building by mapping the logical path to a physical path of the building.

Abstract: An apparatus and method operate a portable terminal according to touch and movement. When a touch is sensed, an angle of the portable terminal is determined. When the determined angle belongs to a grip zone, the portable terminal is transitioned to a wake up state.

Abstract: The present invention relates to a motion input device for portable terminal and an operation method using the same. A motion input device of a portable terminal of the present invention includes a sensor unit configured to collect a sensor signal from at least one sensor; an operation recognition unit configured to generate a motion signal corresponding to an operation of portable terminal based on the sensor signal; a scenario preparation unit configured to generate an input scenario based on at least one motion signal; and a scenario mapping unit configured to detect, in a scenario database, a standards scenario corresponding to the input scenario, and to generate an input signal corresponding to the standards scenario.

Abstract: A method for reducing power consumption based on a motion sensor and a portable terminal adapted to the method are disclosed. The method includes terminating driving of a motion recognition program according to whether an input is detected by at least one sensor unit disposed in the portable terminal, and switching a mode of a controller included in the portable terminal into a motion recognition deactivation mode. The motion sensor-based portable terminal can reduce the power consumption, thereby lengthening the life span of the battery. The user can use the motion sensor-based portable terminal for a long period of time without frequently recharging its battery.

Abstract: A low power detection apparatus and a method for displaying information are provided. When a low power manager drives a proximity detection sensor to generate a proximity interrupt in a state within which the portable terminal is in an idle state, the low power manager drives a motion detection sensor and determines a motion of the portable terminal for a preset time. When there is no motion of the portable terminal for the preset time, the low power manager generates proximity data for displaying screen information and then transmits the generated proximity data to an application processor so as to display screen information which the user desires with low power.

Abstract: An apparatus and method operate a portable terminal according to touch and movement. When a touch is sensed, an angle of the portable terminal is determined. When the determined angle belongs to a grip zone, the portable terminal is transitioned to a wake up state.

Abstract: A method and apparatus perform pressure detection in a mobile terminal. method determines a squeezing pressure of the mobile terminal. The method determines whether a user squeezes the mobile terminal using the squeezing pressure determined and a value of a proximity sensor. The method transitions the mobile terminal to a wakeup state in response to determining that the user squeezed the mobile terminal.

Abstract: Provided is an apparatus and method for switching a navigation mode between a vehicle navigation mode and a personal navigation mode in a navigation device supporting vehicle navigation and personal navigation. Switching between the vehicle navigation mode and the personal navigation mode is performed according to whether the navigation device is mounted in a navigation device holder, whether a GPS speed provided by a GPS receiver is higher than a predetermined speed, and whether a step is detected using an output of an accelerometer. Since mode switching between the vehicle navigation mode and the personal navigation mode is automatically performed, a user does not need to manually perform mode switching.

Abstract: An apparatus and method operate a portable terminal according to touch and movement. When a touch is sensed, an angle of the portable terminal is determined. When the determined angle belongs to a grip zone, the portable terminal is transitioned to a wake up state.

Abstract: Context recognition methods and apparatus are provided for an application processor and a micro control unit. It is determined whether an operation switch condition for switching to a sleep mode is satisfied. A request for execution of a context recognition function is sent to a micro control unit, when the operation switch condition is satisfied. The application processor switches to the sleep mode, when the context recognition function is executed by the micro control unit. The micro control unit collects sensor data at previously stored time intervals, and previously stored state information is updated based on the sensor data.

Abstract: A method and apparatus for controlling a motion-based user interface are provided. The apparatus includes a touch screen for displaying an image and for receiving input of a user touch on at least one spot of the touch screen, a sensor unit for sensing a motion of the apparatus, a motion calculator for calculating a degree of the motion of the apparatus, when sensing the motion of the apparatus at the sensor unit, and a controller for, when the at least one spot is touched on the touch screen, determining the number of touched spots, for receiving information about the degree of the motion of the apparatus from the motion calculator, and for determining whether to change the size of the image or the position of the image according to the number of touched spots.

Abstract: A mobile terminal and a method perform screen unlock based on a motion. The mobile terminal includes a motion measure unit, a motion pattern storage, and a controller. The motion measure unit measures a first motion pattern of the mobile terminal. The motion pattern storage stores a second motion pattern set for the mobile terminal. When the first motion pattern of the mobile terminal measured by the motion measure unit coincides with the second motion pattern stored in the motion pattern storage, the controller executes a screen unlock of the mobile terminal.

Abstract: An apparatus and method for estimating a step length of a user are provided. The apparatus and method use a step length estimation algorithm, e.g. a step length estimation parameter coefficient, according to a movement state of a user, i.e. whether the movement state is a walking state or a running state. The movement state of the user is determined on the basis of an acceleration variance value of an acceleration signal output from an accelerometer. Accordingly, the apparatus and method prevent errors in step length determinations.

Abstract: An apparatus and method for estimating displacement of a user terminal are provided. The method includes estimating, by the user terminal, a moving state of the user terminal; determining a first moving direction probability index of a user, based on the estimated moving state of the user terminal; and determining a moving state of the user terminal and estimating a moving direction of the user terminal, based on the first moving direction probability index.

Abstract: A method and apparatus perform pressure detection in a mobile terminal. method determines a squeezing pressure of the mobile terminal. The method determines whether a user squeezes the mobile terminal using the squeezing pressure determined and a value of a proximity sensor. The method transitions the mobile terminal to a wakeup state in response to determining that the user squeezed the mobile terminal.

Abstract: An apparatus and method operate a portable terminal according to touch and movement. When a touch is sensed, an angle of the portable terminal is determined. When the determined angle belongs to a grip zone, the portable terminal is transitioned to a wake up state.

Abstract: A method and apparatus of a portable terminal estimate a step length of a pedestrian. An accelerometer detects acceleration caused by a movement of the portable terminal as a pedestrian carrying the portable terminal walks. A gyroscope detects angular velocity caused by the movement of the portable terminal as the pedestrian walks. A controller determines a magnitude of a swinging motion of the portable terminal by using at least one of the detected acceleration and angular velocity, determines that the portable terminal makes the swinging motion when the magnitude of the swinging motion is equal to or greater than a predetermined value, determines a carrying position of the portable terminal in the pedestrian's body by using at least one of the detected acceleration and angular velocity, and estimates a step length of the pedestrian according to the determined carrying position of the portable terminal.

Abstract: Walking status estimation in a portable terminal includes a method for estimating walking status. The method includes setting an observation using an estimated temporary step length, an acceleration variance, and a step frequency. The method also includes generating an observed probability vector comprising probabilities per walking status according to the observation. The method further includes determining final probabilities per walking status by multiplying the observed probability vector by at least one of an initial probability matrix and one or more status transition probability vectors. The method still further includes determining a walking status having the greatest final probability as a final walking status.

Abstract: A method and an apparatus provides a service using a sensor and image recognition in a portable terminal that supports Augmented Reality (AR). The method includes determining whether the portable terminal is parallel to ground using an acceleration sensor. When the portable terminal is parallel to the ground, either a map including nearby Point Of Interest (POI) information or constellation information is displayed.