An electronic device includes sensors, a display, and a processor electrically connected to the sensors and the display, in which the electronic device is in a first running mode for permanently providing compass information or a second running mode for providing the compass information, in response to a request from a user. When set to be in the first running mode, the processor a performance mode of a digital compass to be a first performance mode, determines first performance mode-based compass information using the sensors, and displays the determined first performance mode-based compass information on the display. When set to be in the second running mode, the processor sets the performance mode of the digital compass to be a second performance mode, determines second performance mode-based compass information using the sensors at the request from the user, and displays the determined second performance mode-based compass information on the display.

An electronic device includes sensors, a display, and a processor electrically connected to the sensors and the display, in which the electronic device is in a first running mode for permanently providing compass information or a second running mode for providing the compass information, in response to a request from a user. When set to be in the first running mode, the processor a performance mode of a digital compass to be a first performance mode, determines first performance mode-based compass information using the sensors, and displays the determined first performance mode-based compass information on the display. When set to be in the second running mode, the processor sets the performance mode of the digital compass to be a second performance mode, determines second performance mode-based compass information using the sensors at the request from the user, and displays the determined second performance mode-based compass information on the display.

A method may comprise measuring during a survey operation a gravitational field data using a survey accelerometer and magnetic field data using a survey magnetometer and determining during a drilling operation an azimuth of a wellbore based on the gravitational field data and the magnetic field data obtained during the survey operation. A system may comprise a drilling rig; a pipe string attached to the drilling rig; a bottom hole assembly attached to the pipe string, wherein the bottom hole assembly comprises at least one sensor; a drill bit, wherein the at least one sensor measure a revolutions-per-minute (RPM) of the drill bit; and a computing subsystem.

A method may comprise measuring during a survey operation a gravitational field data using a survey accelerometer and magnetic field data using a survey magnetometer and determining during a drilling operation an azimuth of a wellbore based on the gravitational field data and the magnetic field data obtained during the survey operation. A system may comprise a drilling rig; a pipe string attached to the drilling rig; a bottom hole assembly attached to the pipe string, wherein the bottom hole assembly comprises at least one sensor; a drill bit, wherein the at least one sensor measure a revolutions-per-minute (RPM) of the drill bit; and a computing subsystem.

A mouth guard senses impact forces and determines if the forces exceed an impact threshold. If so, the mouth guard notifies the user of the risk for injury by haptic feedback, vibratory feedback, and/or audible feedback. The mouth guard system may also remotely communicate the status of risk and the potential injury. The mouth guard uses a local memory device to store impact thresholds based on personal biometric information obtained from the user and compares the sensed forces relative to those threshold values. The mouth guard and its electrical components on the printed circuit board are custom manufactured for the user such that the mouth guard provides a comfortable and reliable fit, while ensuring exceptional performance.

A mouth guard senses impact forces and determines if the forces exceed an impact threshold. If so, the mouth guard notifies the user of the risk for injury by haptic feedback, vibratory feedback, and/or audible feedback. The mouth guard system may also remotely communicate the status of risk and the potential injury. The mouth guard uses a local memory device to store impact thresholds based on personal biometric information obtained from the user and compares the sensed forces relative to those threshold values. The mouth guard and its electrical components on the printed circuit board are custom manufactured for the user such that the mouth guard provides a comfortable and reliable fit, while ensuring exceptional performance.

A foldable mobile terminal apparatus and control method are provided. The apparatus includes a first section, a second section coupled to the first section and movable between a folded state and an unfolded state including a plurality of partially folded states, a flexible display coupled to the first and second sections, a first sensor, and at least one processor to, while the mobile terminal apparatus is partially folded, identify one of the partially folded states of the mobile terminal apparatus, and control the display to display information corresponding to a compass direction based on magnetic related information obtained by the first sensor and according to the identified partially folded states. The electronic device can prevent distortion of the first sensor caused by the display by calibrating the geomagnetic value of the sensor based on an angle between a first surface of a first section and a third surface of the second section.

A foldable mobile terminal apparatus and control method are provided. The apparatus includes a first section, a second section coupled to the first section and movable between a folded state and an unfolded state including a plurality of partially folded states, a flexible display coupled to the first and second sections, a first sensor, and at least one processor to, while the mobile terminal apparatus is partially folded, identify one of the partially folded states of the mobile terminal apparatus, and control the display to display information corresponding to a compass direction based on magnetic related information obtained by the first sensor and according to the identified partially folded states. The electronic device can prevent distortion of the first sensor caused by the display by calibrating the geomagnetic value of the sensor based on an angle between a first surface of a first section and a third surface of the second section.

A navigation system for aiding a human navigating, the navigation system includes a belt having a belt length and opposite belt ends, and includes an elongated compartment; a belt coupling arranged to the belt for coupling the belt ends; a compass sensor arranged to the belt and for sensing the compass direction based on the earth's magnetic field; a tactile unit arranged for tactile communicating a direction to the human; additional tactile actuators arranged to the belt and for communicating a direction to the human. The additional tactile actuators are distributed over the length of the belt. An elongated mesh is provided for arranging the elongated mesh inside the elongated compartment, the additional tactile actuators being arranged to the mesh. A processing unit is configured for controlling the navigation system.

A navigation system for aiding a human navigating, the navigation system includes a belt having a belt length and opposite belt ends, and includes an elongated compartment; a belt coupling arranged to the belt for coupling the belt ends; a compass sensor arranged to the belt and for sensing the compass direction based on the earth's magnetic field; a tactile unit arranged for tactile communicating a direction to the human; additional tactile actuators arranged to the belt and for communicating a direction to the human. The additional tactile actuators are distributed over the length of the belt. An elongated mesh is provided for arranging the elongated mesh inside the elongated compartment, the additional tactile actuators being arranged to the mesh. A processing unit is configured for controlling the navigation system.