Abstract: The invention relates to a method for determining a rotor temperature of an electric motor, in particular an asynchronous motor, the rotor temperature being determined at least in accordance with reactive powers and/or in accordance with losses of the electric motor. A first rotor temperature is determined in accordance with the reactive powers and, depending on an operating range of the electric motor, plausibility-checked or replaced by a second rotor temperature, which is determined in accordance with the losses.

Abstract: An input device includes an input surface and a first substrate mechanically coupled to the input surface. The first substrate includes a first plurality of sensor electrodes configured to detect an input force applied by an input object to the input surface. The input device further includes a conductive material disposed between the input surface and the first plurality of sensor electrodes. The conductive material shields the first plurality of sensor electrodes from effects of the input object in a sensing region of the input device. The input device further includes a second substrate mechanically coupled to the first substrate. The second substrate includes a second plurality of sensor electrodes configured to detect a location of an input object at the input surface.

Abstract: A keyboard input device including a plurality of key assemblies, at least one of the key assemblies comprising: a key cap having a top surface configured to be pressed by a user; a rigid conductive substrate (e.g., metal) coupled to a bottom surface of the key cap; a translation mechanism configured to allow translation of the key responsive to user input; and a capacitive sensor substrate disposed between the key cap and the rigid conductive substrate, the capacitive sensor substrate comprising a plurality of sensor electrodes configured to detect input objects in a sensing region of the key assembly.

Abstract: A touch sensing circuit is provided. The touch sensing circuit includes: a touch capacitor, for being touched; a touch capacitor frequency detection unit, coupled to the touch capacitor, for detecting an output frequency from the touch capacitor; a reference frequency generation unit, for generating a reference frequency; a calculation unit, coupled to the touch capacitor frequency detection unit and the reference frequency generation unit, for calculating the variation of the difference between the output frequency from the touch capacitor and the reference frequency; and a determination unit, coupled to the calculation unit, for determining whether the touch capacitor is being touched based on whether the variation of the difference is greater than a criterion value.

Abstract: A transmission interface for a touch system is provided. The touch system includes a micro controller and a touch device, the transmission interface comprising: a single transmission wire, connected between the micro controller and the touch device, for bi-directional transmission between the micro controller and the touch device.

Abstract: A touch sensing circuit is provided. The touch sensing circuit includes: a touch capacitor, for being touched; a touch capacitor frequency detection unit, coupled to the touch capacitor, for detecting an output frequency from the touch capacitor; a reference frequency generation unit, for generating a reference frequency; a calculation unit, coupled to the touch capacitor frequency detection unit and the reference frequency generation unit, for calculating the variation of the difference between the output frequency from the touch capacitor and the reference frequency; and a determination unit, coupled to the calculation unit, for determining whether the touch capacitor is being touched based on whether the variation of the difference is greater than a criterion value.

Abstract: A stylus (20) used in a portable electronic device (40) includes an elastic member (22), a sleeve (23), a sliding member (24), a wire (25) and a writing member (26). The elastic member and the sliding member are received in the sleeve. The writing member is mounted on one end of the sleeve and has a center hole (264) defined therein. The wire wraps around the sliding member, with one end fastened to one end of the sliding member, and another end extending out from the center hole of the writing member. The sliding member is rotatably engaged with the sleeve. The elastic member is configured for giving a pushing force to the sliding member so as to force the sliding member to rotate.

Abstract: A key module (10) comprises a cover (12), a receiving socket (14), a camera trigger (17) and a focus trigger (18). The receiving socket has a receiving cavity (142) defined therein. The cover is configured for slidably received in the receiving cavity, and includes a first contact portion (124) and a second contact portion formed on a surface (122) thereof. The first contact portion and the second contact portion trigger the camera trigger and the focus trigger, when the cover is pressed. A portable electronic device using the key module is also disclosed.

Abstract: A stylus (20) includes a stylus body, a writing portion (24) and a flexing member (22). The writing portion is connected with one end of the stylus body. The flexing member is connected with the other end of the stylus body. The flexing member is extended and compressed by outer force.

Abstract: An electronic device with retractable stylus. The electronic device comprises a main body and a stylus. The stylus comprises a resilient member disposed therein and a latching mechanism for engaging the main body. To connect the stylus and the main body, the resilient member is deformed and the latching mechanism is engaged with the main body. When the latching mechanism separates from the main body, the resilient member exerts force to extend the stylus to make the stylus protruded from the main body.

Abstract: In a brake system for a hybrid motor vehicle, while it is set to pure electric drive mode, the crankshaft of the combustion engine is driven temporarily with the aid of at least one electric motor for generating reduced pressure in the intake manifold for supplying reduced pressure of the additional vacuum reservoir to the vacuum chamber of its brake booster only when, during or following the single or multiple actuation of the brake pedal thereof, the reduced pressure in the vacuum reservoir of the brake booster drops to a predeterminable lower limit or falls below the lower limit.

Abstract: An electronic device includes a body having a cavity for accommodating a card, a flexible element positioned at an end of the cavity, and a cover connected to the electronic device in a rotatable manner. The cover includes a panel having an opening, and an activating element. The activating element has a protrusion. When an end of the activating element is pressed, the protrusion pushes the card to press the flexible element so that the card can be ejected out of the cavity.