Abstract: A power transfer device is a power transmitter (201) or a power receiver (205) conducting power transfer using an electromagnetic power transfer signal employing a repeating time frame comprising a power transfer time interval and an object detection time interval. A power transfer circuit (303, 307) comprises a power transfer coil (203, 207) receiving or generating the power transfer signal during the power transfer time intervals. A communicator (315, 323) communicates with the other device via an electromagnetic communication signal. A communication resonance circuit (317, 321) comprises a communication antenna (319, 325) for transmitting or receiving the electromagnetic communication signal. During the communication, the communication resonance circuit (317, 321) provides a resonance at a first resonance frequency to the communicator (315, 323).

Abstract: A power transfer device is a power transmitter (201) or a power receiver (205) conducting power transfer using an electromagnetic power transfer signal employing a repeating time frame comprising a power transfer time interval and an object detection time interval. A power transfer circuit (303, 307) comprises a power transfer coil (203, 207) receiving or generating the power transfer signal during the power transfer time intervals. A communicator (315, 323) communicates with the other device via an electromagnetic communication signal. A communication resonance circuit (317, 321) comprises a communication antenna (319, 325) for transmitting or receiving the electromagnetic communication signal. During the communication, the communication resonance circuit (317, 321) provides a resonance at a first resonance frequency to the communicator (315, 323).

Abstract: A power transmitter (101) provides wireless power transfer to a power receiver (105) via a wireless inductive power transfer signal. The power transmitter (101) comprises transmitter coil (203) for generating the power transfer signal and a driver (201) generating a drive signal for this. A communicator (207) communicates with the power receiver (105) via a communication channel that does not use the power transfer signal as a communication carrier. A power loop controller (205) implements a power control loop by adapting a power level of the power transfer signal in response to power control error messages received from the power receiver (105). A generator (209) introduces a power level variation sequence to the power transfer signal and a validity detector (211) detects data received by the communicator (207) to be invalid data for the power transfer in response to a comparison of the power level variation sequence and power change requests of the power control error messages.

Abstract: A power transfer device is a power transmitter (201) or a power receiver (205) conducting power transfer using an electromagnetic power transfer signal employing a repeating time frame comprising a power transfer time interval and an object detection time interval. A power transfer circuit (303, 307) comprises a power transfer coil (203, 207) receiving or generating the power transfer signal during the power transfer time intervals. A communicator (315, 323) communicates with the other device via an electromagnetic communication signal. A communication resonance circuit (317, 321) comprises a communication antenna (319, 325) for transmitting or receiving the electromagnetic communication signal. During the communication, the communication resonance circuit (317, 321) provides a resonance at a first resonance frequency to the communicator (315, 323).

Abstract: A self-powered sensor device (100) is provided which comprises a wireless network unit (140) configured to enable a communication in a Low-Power Wide-Area Network (LPWAN), an energy converting unit (150) configured to convert a first physical quantity into energy, and an energy harvesting unit (110) configured to harvest energy from the energy converted by the energy converting unit (150), and to initiate a sending of a message via the wireless network unit (140) every time a predetermined amount of energy is harvested by the energy harvesting unit (110).

Abstract: A self-powered sensor device (100) is provided which comprises a wireless network unit (140) configured to enable a communication in a Low-Power Wide-Area Network (LPWAN), an energy converting unit (150) configured to convert a first physical quantity into energy, and an energy harvesting unit (110) configured to harvest energy from the energy converted by the energy converting unit (150), and to initiate a sending of a message via the wireless network unit (140) every time a predetermined amount of energy is harvested by the energy harvesting unit (110).

Abstract: In one embodiment there is provided an ambient lighting control system 1 comprising a controller (2) and a sensor node (3a). The sensor node (3a) comprises an arrangement including a light energy collecting element (8) such as a solar cell, an energy storage element (9) and a transmitter (11). The collecting element (8) charges the storage element (9). The transmitter (11) is arranged to transmit signals to the controller (2) using energy stored by the energy storage element (9), wherein the number of signals provided during a time interval to the controller (2) is proportional to a light intensity at the light energy collecting element (8). The controller (2) may thus output a control signal C for controlling an amount of ambient lighting, wherein the control signal is based on the determined number of received signals.

Abstract: In one embodiment there is provided an ambient lighting control system 1 comprising a controller (2) and a sensor node (3a). The sensor node (3a) comprises an arrangement including a light energy collecting element (8) such as a solar cell, an energy storage element (9) and a transmitter (11). The collecting element (8) charges the storage element (9). The transmitter (11) is arranged to transmit signals to the controller (2) using energy stored by the energy storage element (9), wherein the number of signals provided during a time interval to the controller (2) is proportional to a light intensity at the light energy collecting element (8). The controller (2) may thus output a control signal C for controlling an amount of ambient lighting, wherein the control signal is based on the determined number of received signals.

Abstract: A method for antialiased imaging of graphical objects on a pixel oriented display by rasterizing input pixel data as virtual pixels into a memory with a virtual resolution that is a factor higher than the physically displayed pixel resolution. In accordance with the invention, the existing color value of the physical pixel that corresponds to a virtual pixel to be modified is retrieved from the memory, the input color value of said virtual pixel to be rasterized is derived from the pixel input data, and split in its basic red, green and blue color components. The existing and the input color value are linearly combined for each color component in accordance with: ((N−1)*existing color value+M*input color value)/N, in which M represents a value at least equal to one and N being R2, and the result thereof used to overwrite the existing color value of the physical pixel at the memory location of said physical pixel.

Abstract: A display-based system is disclosed with a processing unit, a memory control facility, and a graphics display controller interfacing to a display facility. Collectively these modules are interconnected by a bus facility to an external memory facility. The graphics display controller has a first mode providing a video image signal to the display facility. In particular, a detector is provided for detecting display stabilization. An output of the graphics display controller is being coupled to a frame grabber. The frame grabber is arranged to execute a writeback-to-memory storage of the video image signal into a writeback image memory during a subsequent videoframe, and subsequently signaling the graphics display controller to switch over to a second mode, in which the stored writeback video image signal is supplied to the display facility. The average data traffic on the bus facility is thus reduced.

Abstract: A display-based system is disclosed with a processing unit, a memory control facility, and a graphics display controller interfacing to a display facility. Collectively these modules are interconnected by a bus facility to an external memory facility. The graphics display controller has a first mode providing a video image signal to the display facility. In particular, a detector is provided for detecting display stabilization. An output of the graphics display controller is being coupled to a frame grabber. The frame grabber is arranged to execute a writeback-to-memory storage of the video image signal into a writeback image memory during a subsequent videoframe, and subsequently signaling the graphics display controller to switch over to a second mode, in which the stored writeback video image signal is supplied to the display facility. The average data traffic on the bus facility is thus reduced.