Various embodiments provide systems and methods capable of facilitating interaction with handheld electronics devices based on sensing rotational rate around at least three axes and linear acceleration along at least three axes. In one aspect, a handheld electronic device includes a subsystem providing display capability, a set of motion sensors sensing rotational rate around at least three axes and linear acceleration along at least three axes, and a subsystem which, based on motion data derived from at least one of the motion sensors, is capable of facilitating interaction with the device.

Controlling and accessing content using motion processing on mobile devices

Heat and fluid flow in high-power LED packaging and applications

Systems and methods for wireless power transmission

The present disclosure describes a methodology for wireless power transmission based on pocket-forming. This methodology may include one transmitter and at least one or more receivers, being the transmitter the source of energy and the receiver the device that is desired to charge or power. The transmitter may identify and locate the device to which the receiver is connected and thereafter aim pockets of energy to the device in order to power it. Pockets of energy may be generated through constructive and destructive interferences, which may create null-spaces and spots of pockets of energy ranged into one or more radii from transmitter. Such feature may enable wireless power transmission through a selective range, which may limit operation area of electronic devices and/or may avoid formation of pockets of energy near and/or over certain areas, objects and people.

Wireless power transmission with selective range

A method for controlling communication between wireless power transmitter managers is disclosed. According to some aspects of this embodiment, wireless power transmission system may include one or more wireless power transmitter managers and one or more wireless power receivers for powering various customer devices. A WiFi connection may be established between wireless power transmitter managers to share information between system devices. Wireless power transmitter manager may need to fulfill two conditions to control power transfer over a customer device; customer device's signal strength threshold has to be significantly greater than 50%, such as 55% or more of the signal strength measured by all other wireless power transmitter managers and has to remain significantly greater than 50% for a minimum amount of time.

System and method for controlling communication between wireless power transmitter managers

Provided is a wireless power transmission apparatus. The apparatus includes an ultrasound transmitter generating an ultrasound signal in response to an external source voltage and transmitting the generated ultrasound signal to a medium layer and an ultrasound receiver receiving the ultrasound signal through the medium layer and converting the received ultrasound signal into a driving voltage. The ultrasound transmitter and receiver are manufactured to control impedance values thereof to be matched with each other and a distance between the ultrasound transmitter and receiver is controlled according to predetermined distance conditions.

Wireless power transmission apparatus using ultrasound

Experimental study on the thermal performance of micro-heat pipe with cross-section of polygon

Improving thermal performance of miniature heat pipe for notebook PC cooling

Disclosed are ultrasonic wireless power transmitter and receiver apparatuses, and a method for wireless charging thereof. A method for wireless charging according to the present disclosure includes: transmitting, by an ultrasonic wireless power transmitter apparatus, an wakeup signal to an ultrasonic wireless power receiver apparatus; calculating, by the ultrasonic wireless power transmitter apparatus, a charging time according to a charging status information received from the ultrasonic wireless power receiver apparatus; generating, by the ultrasonic wireless power transmitter apparatus, an ultrasonic signal, amplifying the generated ultrasonic signal to predetermined voltage and thereafter; charging, by the ultrasonic wireless power transmitter apparatus, the ultrasonic wireless power receiver apparatus for the calculated time and thereafter; and determining, by the ultrasonic wireless power transmitter apparatus, whether secondary charging is to be performed according to a charged status information received from the ultrasonic wireless power receiver apparatus.

Ultrasonic wireless power transmitter and receiver apparatuses, and method for wireless charging thereof

A method for fabricating a metal micro heat pipe with a polygonal cross-section to allow working fluid to flow by capillary force generated at edges of the polygonal of the micro heat pipe. The polygonal cross-section is formed of a single metal layer via a single drawing process. The micro heat pipe is formed of a single metal plate.

Gunn Hwang

Papers

Wireless power transmission apparatus using ultrasound

Experimental study on the thermal performance of micro-heat pipe with cross-section of polygon

Improving thermal performance of miniature heat pipe for notebook PC cooling

Ultrasonic wireless power transmitter and receiver apparatuses, and method for wireless charging thereof

Micro heat pipe with poligonal cross-section manufactured via extrusion or drawing