Abstract: Systems and methods are disclosed for capturing stabilized images. Motion of the mobile device is determined so that the relative position of the lens and image sensor may be adjusted to compensate for unintended motion. The relative position of the lens and image sensor may be periodically reset in response to a synchronization signal in between capturing images.

Abstract: Systems and methods of optically stabilizing an image. A lens obtains optical image information corresponding to an image. An image sensor converts the optical image information into electrical image information. A rotation signal related to rotational movement of a camera unit is generated using a first motion sensor that provides a signal related to rotation when the camera unit is rotated. A translation signal related to translational movement of the camera unit is generated using a second motion sensor that provides a signal related to translation when the camera unit undergoes translational movement. The translation signal is modified using the rotation signal to generate a corrected translation signal that compensates for lens movement which is different from second motion sensor movement. The corrected translation signal controls an actuator that adjusts a lens position with respect to the image sensor, based on rotation and translation experienced by the camera unit.

Abstract: Systems and methods of correcting for signal drift in optical image stabilization of a portable device. An accelerometer is used to obtain an acceleration signal corresponding to acceleration of the portable device. A gravity component is removed from the accelerometer signal to obtain a proper acceleration signal. A double integration is performed on the proper acceleration signal to obtain a translation signal. A drift component of the translation signal is estimated. The estimated drift component is used to generate a drift correction signal. A phase compensation signal is determined based on a plurality of phase responses of a plurality of components of the optical image stabilization system. The drift correction signal and the phase compensation signal are applied to an actuator controller which controls movement of a lens within the portable device as part of the process for optical image stabilization.

Abstract: An optical image stabilization system and method which also compensate for translation, in addition to rotation compensation. An accelerometer may be used to detect acceleration movement of the camera which may be used to determine translation movement of the camera. In this way, using the acceleration information, a compensation or stabilization may be achieved in each axis based on a translation movement of the camera or the camera-containing device. In an embodiment, the present invention reduces the unwanted signal drift or undesired phase shift due to integration of the accelerometer sensor signal into the resulting translational movement signal. The various contributions to phase delay from the different aspects or portions of the overall system are assessed so a net amount of phase delay may be determined, such that an equal and opposite amount of phase delay may be introduced in order to bring the net phase delay to zero or close to zero.

Abstract: An optical image stabilization system and method which also compensate for translation, in addition to rotation compensation. This translation compensation may be performed for one, two or three axes. A gyroscopic sensor may be used to detect the angular velocity of the camera and from the angular velocity, the rotation of the device can be determined, such as for example, by integration. This rotation may be determined for one or more axes. An accelerometer may be used to detect acceleration movement of the camera which may be used to determine translation movement of the camera. A two axis or two dimension accelerometer may be used to provide acceleration information along each of two different axes or dimensions. In this way, using the acceleration information for each axis or dimension, a compensation or stabilization may be achieved in each of the two axes or dimensions based on a translation movement of the camera or the camera-containing device.

Abstract: Parameters characterizing the orientation and the position of each sensor, including at least one accelerometer, are evaluated in the reference frame of each segment, together with the length of each segment, by using predetermined configurations and motions of a structure to which the sensors are attached. This makes it possible to provide a device for capturing the motions of a body with measurements which enables greater reliability of the measurements.

Abstract: The invention discloses a device and a method to control an object on a surface using motion sensor measurements and relative and absolute pointing algorithms. Relative pointing is preferred at low speeds and absolute pointing is preferred at high speeds. Transition between the results of the two algorithms has to be smoothed, using a weighted combination of the two results. The weights may be made dependent over time or over speed of the device. Maximum and minimum values of different parameters may have to be set to avoid jumps or changes in direction which may affect the user's experience negatively. The goal is that the user has consistent perceptions what he or she sees on the screen and the movements he or she imparts on the device, while still keeping the position of the object as close as possible to the position calculated by an absolute pointing algorithm.

Abstract: A system for capturing the movements of a body having substantially rigid segments articulated together includes attitude units fastened onto the segments of the body, the units each including at least one accelerometer and one magnetometer, and a reduced number of gyroscopes. The system also includes a pseudo-static state detection module and a module for calculating pseudo-static angles. When all segments are detected in a pseudo-static state, the state vector is provided by the module for calculating pseudo-static angles. When a segment is detected in a dynamic state, the state vector is provided at the output of a Kalman filter.

Abstract: A 3D pointing device and a method are disclosed to control an object on a surface and to improve the user experience when the user moves the object beyond the limits of the surface where the object can no longer be visualized. The user experience is enhanced by defining the behavior of a cursor in a margin around the screen.

Abstract: The invention relates to a processing logic for determining a position of a virtual object on a display configured to: receive from one or more motion sensors motion signals representative of an orientation of a first device and/or a derivative thereof; obtain a first set of data representative of the orientation of the first device based on the motion signals; obtain a second set of data representative of the orientation of the first device based on the motion signals, said second set of data being different from the first set of data; calculate a first candidate position of the virtual object on a display based on the first set of data; calculate a second candidate position of the virtual object on the display based on the second set of data; select one of the first candidate position and the second candidate position as a position of the virtual object on the display.

Abstract: The invention relates to a processing logic for determining a position of a virtual object on a display configured to: receive from one or more motion sensors motion signals representative of an orientation of a first device and/or a derivative thereof; obtain a first set of data representative of the orientation of the first device based on the motion signals; obtain a second set of data representative of the orientation of the first device based on the motion signals, said second set of data being different from the first set of data; calculate a first candidate position of the virtual object on a display based on the first set of data; calculate a second candidate position of the virtual object on the display based on the second set of data; select one of the first candidate position and the second candidate position as a position of the virtual object on the display.

Abstract: The magnetic field measurement system comprises a triaxial main sensor (1) for measuring magnetic field that can move jointly with a carrier element (2) capable of generating at least one additional magnetic field disturbing the measurements of said triaxial main sensor (1), said triaxial sensor (1) being adapted for providing orthonormal measurements for a reference magnetic field in the absence of magnetic disturbances due to said carrier element (2). The system comprises means of adjustment (5, 6, 7, 9, 4a, 4b) of said triaxial main sensor (1) comprising a removable additional sensor for magnetic field measurement, that can move jointly with said carrier element (2), and disposed outside said carrier element (2) away from the additional magnetic field or fields.

Abstract: The invention discloses a device and a method to control an object on a surface using motion sensor measurements and relative and absolute pointing algorithms. Relative pointing is preferred at low speeds and absolute pointing is preferred at high speeds. Transition between the results of the two algorithms has to be smoothed, using a weighted combination of the two results. The weights may be made dependent over time or over speed of the device. Maximum and minimum values of different parameters may have to be set to avoid jumps or changes in direction which may affect the user's experience negatively. The goal is that the user has consistent perceptions what he or she sees on the screen and the movements he or she imparts on the device, while still keeping the position of the object as close as possible to the position calculated by an absolute pointing algorithm.

Abstract: The invention discloses a 3D pointing device and a method to control an object on a surface and improve the user experience when the user moves the object beyond the limits of the surface where the object can no longer be visualized. The user experience is enhanced by defining the behaviour of a cursor in a margin around the screen.

Abstract: Parameters characterizing the orientation and the position of each sensor, including at least one accelerometer, are evaluated in the reference frame of each segment, together with the length of each segment, by using predetermined configurations and motions of a structure to which the sensors are attached. This makes it possible to provide a device for capturing the motions of a body with measurements which enables greater reliability of the measurements.

Abstract: A system for capturing the movements of a body having substantially rigid segments articulated together includes attitude units fastened onto the segments of the body, the units each including at least one accelerometer and one magnetometer, and a reduced number of gyroscopes. The system also includes a pseudo-static state detection module and a module for calculating pseudo-static angles. When all segments are detected in a pseudo-static state, the state vector is provided by the module for calculating pseudo-static angles. When a segment is detected in a dynamic state, the state vector is provided at the output of a Kalman filter.

Abstract: The magnetic field measurement system comprises a triaxial main sensor (1) for measuring magnetic field that can move jointly with a carrier element (2) capable of generating at least one additional magnetic field disturbing the measurements of said triaxial main sensor (1), said triaxial sensor (1) being adapted for providing orthonormal measurements for a reference magnetic field in the absence of magnetic disturbances due to said carrier element (2). The system comprises means of adjustment (5, 6, 7, 9, 4a, 4b) of said triaxial main sensor (1) comprising a removable additional sensor for magnetic field measurement, that can move jointly with said carrier element (2), and disposed outside said carrier element (2) away from the additional magnetic field or fields.