A representative method involves: generating measured angular velocities and measured axial accelerations; calculating a resulting deviation associated with movements and rotations in a spatial reference frame by: providing a previous quaternion corresponding to time T−1 based on the measured axial accelerations corresponding to time T−1 and the measured angular velocities corresponding to time T−1; converting the measured angular velocities corresponding to time T based on the previous quaternion into a current quaternion and predicted axial accelerations; comparing the predicted axial accelerations with the measured axial accelerations corresponding to time T to obtain a first comparison result; obtaining an updated quaternion associated with time T based on the current quaternion and the first comparison result, and using the updated quaternion as a next occurrence of the previous quaternion; and providing the resulting deviation based on the updated quaternion; and, providing content based on the resulting deviation in the spatial reference frame.

The present embodiment relates to a touch power management circuit and a touch driving system including the same, and more particularly, to a touch power management circuit that prevents unnecessary power consumption during a pen touch driving period in order to reduce power consumption of a display device, and a touch driving system including the same.

A pointing device includes an acceleration sensor, a motion sensor and a processor. The processor includes a first attitude angle calculator, a second attitude angle calculator and an attitude angle selector. When a predetermined condition is satisfied, the processor control the acceleration sensor to generate acceleration data, the first attitude angle calculator calculates a first attitude angle output according to the acceleration data, and the attitude angle selector receives the first attitude angle output as the reference data. When the predetermined condition is not satisfied, the second attitude angle calculator calculates a second attitude angle output according to angular velocity data generated by the motion sensor and the reference data, and the attitude angle selector receives the second attitude angle output as the reference data. The present disclosure also provides a control method of the pointing device.

A transmitter comprising: a signal modulator for transmitting electrical signals via an electrode, wherein the electrical signals carry a message representing a signal value; and a controller, coupled to the signal modulator, configured for having the signal modulator transmitting the electrical signals with a first duty cycle in a reference signal time period and transmitting the electrical signals with a second duty cycle in a modulation signal time period, wherein a first ratio corresponding to the second duty cycle and the first duty cycle is corresponding to the signal value, wherein the lengths of the reference signal time period and the modulation signal time period are the same, and wherein the maximum amplitudes of the electrical signals during the reference signal time period and the modulation signal time period are the same.

An image processing method and apparatus for a smart pen, and an electronic device are provided in embodiments of the present disclosure, and belong to the technical field of data processing. The method comprises: monitoring a working state of a second pressure switch provided at a pen tip of a smart pen after a first pressure switch of the smart pen is in a closed state; controlling an image collection module on the smart pen to collect a reflected infrared signal from an area where the smart pen writes; performing feature extraction processing on an original image to obtain a feature matrix corresponding to the original image; determining, based on current load status of the smart pen, the number of convolutional layers used for convolution processing in parallel convolutional layers; and adding current time information to a trajectory classification result to form a time-ordered trajectory vector.

A position detection device includes a main body with a housing that encloses an electronic pen while the electronic pen is accommodated in an accommodation portion included in the housing, and a planar coil having a rectangular cross-sectional area and disposed adjacent to the accommodation portion at a position at which a direction perpendicular to the rectangular cross-sectional area of the planar coil crosses an axial direction of the electronic pen while the electronic pen is accommodated in the accommodation portion.

Described herein are systems, devices, and methods for aiding a user to scroll through or otherwise manipulate a stack of medical and tissue images. A system as described herein may comprise: a foot controller, configured to detect one or more of vertical and horizontal motion of a user’s foot to control image navigation, review, positioning, and viewing, functions; a computer; and a user interface.

A method for controlling an electronic device by an input device, and an input device is disclosed. The method includes: controlling, by the input device, an electronic device by using a touch apparatus when the input device detects that the input device is in contact with the touch apparatus of the electronic device; and when the input device detects that the input device is in contact with an object surface beyond the touch apparatus of the electronic device, detecting, by the input device, a motion of the input device on the object surface, and sending information about the motion to the electronic device, to control the electronic device.

Systems and methods for managing communications between a wearable computing device and at least one remote computing device, using a host computing device. The host computing device provides a message handling service that receives one or more messages directed to the wearable computing device from the remote computing device, or directed to the remote computing device from the wearable computing device, and, for each of the one or more messages, determines an action associated with the respective message; and takes the action for each of the one or more messages.

Techniques to customize a media processing system are described. A media processing system is described capable of integrating a large set of heterogeneous electronic devices into a single integrated system with enhanced navigation capabilities and automated configuration services. Other embodiments are described and claimed.