Abstract: A misalignment tolerant foreign object detection approach is proposed for use with wireless charger systems where sensor coils or portions thereof are mirrored about one or more axes of radial symmetry. A first variant is proposed adapted for x-axis misalignment tolerance, and a second variant is proposed for simultaneous x and y axis misalignment tolerance. Further variants are proposed with additional rotational misalignment tolerance. Detection of the foreign object despite misalignment in receiver and transmitter coils is an important safety and efficiency consideration.

Abstract: A misalignment tolerant foreign object detection approach is proposed for use with wireless charger systems where sensor coils or portions thereof are mirrored about one or more axes of radial symmetry. A first variant is proposed adapted for x-axis misalignment tolerance, and a second variant is proposed for simultaneous x and y axis misalignment tolerance. Further variants are proposed with additional rotational misalignment tolerance. Detection of the foreign object despite misalignment in receiver and transmitter coils is an important safety and efficiency consideration.

Abstract: Apparatus is disclosed for orientating a tobacco product containing a strip component. The apparatus comprises means for producing an image of the tobacco product, means for determining an apparent width of the strip component from the image, means for determining an amount of rotation of the tobacco product based on the apparent width, and means for rotating the tobacco product relative to the imaging means by the determined amount of rotation. This may allow the product to be rotated such that the strip component has a known orientation with respect to the imaging means.

Abstract: Apparatus is disclosed for orientating a tobacco product containing a strip component. The apparatus comprises means for producing an image of the tobacco product, means for determining an apparent width of the strip component from the image, means for determining an amount of rotation of the tobacco product based on the apparent width, and means for rotating the tobacco product relative to the imaging mean by the determined amount of rotation. This may allow the product to be rotated such that the strip component has a known orientation with respect to the imaging means.