Abstract: A method for operating an electronic device includes while a display is in low power mode, detecting based on data collected by a time of flight (ToF) sensor, a movable object within a field of view of the electronic device; in response to the detecting initiating a period of detection having a plurality of frames, the period of detection being a time period over which a distance value indicative of a distance between the movable object and the display is detected; for each of the plurality of frames, changing the distance value to reflect whether the movable object is moving near or further from the electronic device; detecting that the distance value after the period of detection is less than a threshold distance value indicative of the movable object approaching the display; if the distance value is less than the threshold distance value, waking up the display.
Abstract: The integrated electronic device is for detecting a local parameter related to a force experienced in a predetermined direction within a solid structure. The device includes a semiconductor substrate having a substantially planar region that defines a plane substantially perpendicular to the predetermined direction. At least one sensor detects the local parameter at least in the predetermined direction with a piezo-resistive effect. At least one substantially planar face is arranged in a portion of the integrated electronic device, the face belonging to a inclined plane by a predetermined angle relative to the plane perpendicular to the predetermined direction, which plane is defined by the substantially planar region of the substrate. The predetermined angle is defined such as to reduce forces acting in directions other than the predetermined direction at the portion of the device around the at least one sensor.
Type:
Application
Filed:
December 17, 2013
Publication date:
July 3, 2014
Applicant:
STMICROELETRONICS S.R.L.
Inventors:
Alberto Pagani, Federico Giovanni Ziglioli, Bruno Murari
Abstract: An optical navigation device is provided for detecting movement of a pointer, such as a finger, in three dimensions. A sensor obtains images of the pointer which have been illuminated by an illumination source, and an image scaling module determines the difference in size between images acquired by the image sensor to determine the difference in height of the pointer between images.
Abstract: The diode is modelled using a compact model comprising modelling of the well resistance for negative values of the current by a curve which increases steeply from an initial resistance value corresponding to a zero value of current up to a plateau.