Samsung Electronics Co., Ltd.

Seoul National University

Ji-Heon Oh

Kyong-Ha Park

Jin-Won Kim

Hyun-su Hong

Jae-myeon Lee

Hyun-Su Hong

Sung-Min Park

Nam-Hoon Kim

Jae-Myeon Lee

Hyun-Ki Jung

Chan-Gook Park

Kyong-ha Park

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.

Context recognition apparatus and method

An apparatus and method for measuring a velocity of a moving object in a navigation system are provided, which can increase an accuracy of velocity measurement and position estimation of the moving object are provided. The apparatus includes a sensor part including an acceleration sensor for measuring acceleration of the moving object and outputting a corresponding acceleration measurement value, and includes an altimeter for measuring an altitude of the moving object and outputting a corresponding altitude measurement value; and a calculation part for calculating the velocity of the moving object by using the acceleration measurement value output from the acceleration sensor and the altitude measurement value output from the altimeter.

Apparatus and method for measuring velocity of moving object in a navigation system

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.

Step length estimation method and portable terminal for the same

An apparatus and method for determining a location of a movement distance measuring apparatus are provided. The apparatus and method determine whether the movement distance measuring apparatus is mounted at the waist of a pedestrian or is located in a pocket and uses a different step length estimation algorithm, e.g. a different step length estimation parameter coefficient, corresponding to the determined mounting position. The determination of whether the movement distance measuring apparatus is mounted to the waist of a pedestrian or is located in a pocket is performed on the basis of a gyro sensor.

Movement distance measuring apparatus and method

Growing community of inventors

Yongin-si, South Korea

Ji-Heon Oh