Abstract: Disclosed are devices and methods of stylus devices that when in contact with a capacitive touchscreen and a grounding element, can vary the signal level detected on a capacitive touchscreen to create a more realistic writing experience. Disclosed are elements of a touchscreen stylus, which individually or in combination, can enable a touchscreen stylus to have at least one electrical characteristic that is variable. In this way the resistive link between the touchscreen and a grounding element can be varied to enable features such as a capability to vary the width of line being drawn, to vary a region of influence on the touchscreen and/or to vary a temperament of action. The elements of a disclosed stylus can include at least one mechanical feature to provide at least one electrical characteristic that is variable and/or at least one material in an arrangement to provide at least one electrical characteristic that is variable.

Abstract: In embodiments of a dynamic impedance circuit, a power circuit of a device charges and/or powers the device when the device is connected to a power source. A dynamic impedance circuit is coupled to the power circuit of the device and to the power source. The dynamic impedance circuit can operate with low impedance, and alternatively, can operate with high impedance responsive to an increased voltage across the dynamic impedance circuit, such as when a chassis of the device is coupled to ground.

Abstract: Disclosed are devices and methods of stylus devices that when in contact with a capacitive touchscreen and a grounding element, can vary the signal level detected on a capacitive touchscreen to create a more realistic writing experience. Disclosed are elements of a touchscreen stylus, which individually or in combination, can enable a touchscreen stylus to have at least one electrical characteristic that is variable. In this way the resistive link between the touchscreen and a grounding element can be varied to enable features such as a capability to vary the width of line being drawn, to vary a region of influence on the touchscreen and/or to vary a temperament of action. The elements of a disclosed stylus can include at least one mechanical feature to provide at least one electrical characteristic that is variable and/or at least one material in an arrangement to provide at least one electrical characteristic that is variable.

Abstract: A smart method (100) and module (300) to minimize standby loss is disclosed. The method (100) can include the steps of: detecting (110) a current parameter at a load node; determining (120) whether a current parameter threshold has been reached; and disabling (13) power delivery based on determining whether the current parameter threshold has been reached. Advantageously, the smart method (100) can provide minimal to zero standby loss, when a current parameter threshold has been reached. This method has use in many electronic devices and particularly in battery chargers, for example, when a predetermined current parameter threshold has been reached or an energy storage device (battery) charge is complete, minimal or zero standby loss can be attained. In one embodiment, the smart method (100) can substantially fully switch off AC mains to eliminate standby loss.

Abstract: An electronic device (100) includes an actuation element (106) configured to alter an actuation element profile (108) of the actuation element (106) with respect to a housing (102) in response to a device event (110). Altering the actuation element profile (108) may include distally extending or changing the form factor of the actuation element (106). Device events, for example where the electronic device (100) is a radiotelephone (300), may include receipt of an incoming communication (310). When such an event occurs, the actuation element profile (108) of a call activation key (306) is altered. In response to the actuation element profile (108) being altered, a user (620) is alerted to the incoming communication (310). Shape memory alloy elements such as martensite, actuation element profile drivers such as electromagnetic driver (700), or actuation element profile motors such as a cam and follower motor (800) a may additionally be used to alter the actuation element profile (108).