Abstract: Examples of charging systems are described which may utilize a network of resonator circuits. Control methods are described which may locate a charging location at which an electronic device is placed proximate the charging system and identify a path of resonator circuits to activate to charge the electronic device. Individual resonator circuits in the path may be activated by selecting a resonant frequency of the resonator circuit such that power may be transferred by the resonator circuit at an operating frequency.

Abstract: An electrostatic clutch includes a shaft having an electrically conductive first layer. The clutch also includes a hold attachment rotatably coupled to the shaft and a tension band having an electrically conductive second layer. The tension band is wrapped around the shaft such that a first end of the tension band is coupled to the hold attachment. The clutch includes a dielectric material disposed between the first layer and the second layer and a load attachment rotatably coupled to the shaft. The clutch is configured for an engaged mode where a voltage applied between the first layer and the second layer causes the tension band to clasp the shaft and the load attachment and the hold attachment to be rotationally locked to the shaft, and for a disengaged mode where the voltage is absent and the shaft can rotate freely with respect to the load attachment and the hold attachment.

Abstract: Acoustic balances configured for weighing in ultrasonic non-contact manipulators, and associated systems and methods are described. In one embodiment, a method for a non-contact acoustic determination of a mass of an object includes capturing the object within an acoustic trap of an acoustic balance. The method also includes, in response to changing at least one acoustic parameter of the acoustic balance, changing an equilibrium position of the object; and in response to changing the equilibrium position of the object, causing the object to oscillate. The method also includes determining a resonant frequency of oscillation of the object; and based on the resonant frequency of oscillation of the object, determining the mass of the object.

Abstract: Systems and methods for capturing and rendering light fields for head-mounted displays are disclosed. A mediated-reality visualization system includes a head-mounted display assembly comprising a frame configured to be mounted to a user's head and a display device coupled to the frame. An imaging assembly separate and spaced apart from the head-mounted display assembly is configured to capture light-field data. A computing device in communication with the imaging assembly and the display device is configured to receive light-field data from the imaging assembly and render one or more virtual cameras. Images from the one or more virtual cameras are presented to a user via the display device.

Abstract: An integrated occupancy sensing system includes one or more radio frequency identification (RFID) sensor nodes and one or more base station units. Each of the one or more RFID sensor nodes includes at least one of (1) an image sensor, (2) an acoustic energy sensor, (3) a temperature sensor, (4) an illuminance sensor, or (5) a relative humidity sensor. Each of the one or more base station units is configured to be connected to a power source to emit a continuous wave carrier signal and to receive a reflected signal. Each of the one or more RFID sensor nodes is configured to receive and reflect the continuous wave carrier signal. In response to receiving the reflected signal from the one or more RFID sensor nodes, at least one of the base station units is configured to infer the likelihood of human occupancy in the building.

Abstract: The present technology relates generally to systems and methods for mediated-reality surgical visualization. A mediated-reality surgical visualization system includes an opaque, head-mounted display assembly comprising a frame configured to be mounted to a user's head, an image capture device coupled to the frame, and a display device coupled to the frame, the display device configured to display an image towards the user. A computing device in communication with the display device and the image capture device is configured to receive image data from the image capture device and present an image from the image data via the display device.

Abstract: Systems and methods for capturing and rendering light fields for head-mounted displays are disclosed. A mediated-reality visualization system includes a head-mounted display assembly comprising a frame configured to be mounted to a user's head and a display device coupled to the frame. An imaging assembly separate and spaced apart from the head-mounted display assembly is configured to capture light-field data. A computing device in communication with the imaging assembly and the display device is configured to receive light-field data from the imaging assembly and render one or more virtual cameras. Images from the one or more virtual cameras are presented to a user via the display device.

Abstract: An adaptive system for efficient and long-range wireless power delivery using magnetically coupled resonators responds to changes in a dynamic environment, and maintains high efficiency over a narrow or fixed frequency range. The system uses adaptive impedance matching to maintain high efficiency. The wireless power transfer system includes a drive inductor coupled to a high-Q transmitter coil, and a load inductor coupled to a high-Q receiver coil. The transmitter coil and receiver coil for a magnetically coupled resonator. A first matching network is (i) operably coupled to the drive inductor and configured to selectively adjust the impedance between the drive inductor and the transmitter coil, or (ii) is operably coupled to the load inductor and configured to selectively adjust the impedance between the load inductor and the receiver coil.

Abstract: A method is provided to produce a custom calendar user interface (UI) display on an electronic device display screen comprising: providing a search query to a user device; sending the search query over the network to a server system; receiving over the network by one or more user devices from a server system, information that identifies one or more code objects that match the search query; using the identified one or more identified code objects by the one or more user devices to generate one or more visual content items within a calendar user interface (UI) grid display on their device display screens.

Abstract: Examples of charging systems are described which may utilize a network of resonator circuits. Control methods are described which may locate a charging location at which an electronic device is placed proximate the charging system and identify a path of resonator circuits to activate to charge the electronic device. Individual resonator circuits in the path may be activated by selecting a resonant frequency of the resonator circuit such that power may be transferred by the resonator circuit at an operating frequency.

Abstract: A wireless power transfer system includes a transmitter configured to transmit power to a receiver, for example, through coupled resonators. The transmitter receives feedback from the receiver, and uses the feedback to control the power transmission, to control a parameter at the receiver, for example, a rectified voltage output by the receiver. The feedback to the transmitter may be provided, for example, by an out-of-band radio system between the transmitter and receiver, by a reflection coefficient at the transmitter, and/or by an encoded modulation of power in the receiver, for example, in an impedance matching module. The transmitter may control the transmitted power, for example, by controlling a transmitter signal generator voltage (VSIG), a transmitter gate driver voltage (VGD), a transmitter amplifier voltage (VPA), and/or an impedance setting in a transmitter impedance matching module.

Abstract: Systems and methods for capturing and rendering light fields for head-mounted displays are disclosed. A mediated-reality visualization system includes a head-mounted display assembly comprising a frame configured to be mounted to a user's head and a display device coupled to the frame. An imaging assembly separate and spaced apart :from the head-mounted display assembly is configured to capture light-field data. A computing device in communication with the imaging assembly and the display device is configured to receive light-field data from the imaging assembly and render one or more virtual cameras. Images from the one or more virtual cameras are presented to a user via the display device.

Abstract: System and method for non-contact manipulation of objects via ultrasonic levitation are presented herein. In one embodiment, a method for a non-contact manipulation of an object includes: generating ultrasound field by an array of ultrasound transducers; lifting the object off a dispensing device by the ultrasound field; and levitating the object by the ultrasound field.

Abstract: A system and method for linking data objects and physical objects of various kinds to an identified user is described. The system provides to the identified user information relating to the delivery status of mail pieces directed to or sent by the user, and the user then tracks and traces the mail pieces. The system further provides to the identified user information relating to continued sessions through which the user provides to a postal service system information relating to mailing labels and postage.

Abstract: Examples described herein include systems, devices, and methods for backscattering carrier signals in accordance with pixel values of an image and/or video. Signals having a property proportionate to pixel values may be converted into a pulse-containing waveform having pulses whose widths and/or duty cycles are determined based on the pixel values. Backscatter transmitters may backscatter a carrier signal in accordance with the pulse-containing waveform to provide the pixel values to a receiver. In this manner, video transmission at low power and/or battery-free operation may be provided.

Abstract: A wireless power transfer system includes a transmitter configured to transmit power to a receiver, for example, through coupled resonators. The transmitter receives feedback from the receiver, and uses the feedback to control the power transmission, to control a parameter at the receiver, for example, a rectified voltage output by the receiver. The feedback to the transmitter may be provided, for example, by an out-of-band radio system between the transmitter and receiver, by a reflection coefficient at the transmitter, and/or by an encoded modulation of power in the receiver, for example, in an impedance matching module. The transmitter may control the transmitted power, for example, by controlling a transmitter signal generator voltage (VSIG), a transmitter gate driver voltage (VGD), a transmitter amplifier voltage (VPA), and/or an impedance setting in a transmitter impedance matching module.

Abstract: An adaptive system for efficient and long-range wireless power delivery using magnetically coupled resonators responds to changes in a dynamic environment, and maintains high efficiency over a narrow or fixed frequency range. The system uses adaptive impedance matching to maintain high efficiency. The wireless power transfer system includes a drive inductor coupled to a high-Q transmitter coil, and a load inductor coupled to a high-Q receiver coil. The transmitter coil and receiver coil for a magnetically coupled resonator. A first matching network is (i) operably coupled to the drive inductor and configured to selectively adjust the impedance between the drive inductor and the transmitter coil, or (ii) is operably coupled to the load inductor and configured to selectively adjust the impedance between the load inductor and the receiver coil.

Abstract: An adaptive system for efficient and long-range wireless power delivery using magnetically coupled resonators responds to changes in a dynamic environment, and maintains high efficiency over a narrow or fixed frequency range. The system uses adaptive impedance matching to maintain high efficiency. The wireless power transfer system includes a drive inductor coupled to a high-Q transmitter coil, and a load inductor coupled to a high-Q receiver coil. The transmitter coil and receiver coil for a magnetically coupled resonator. A first matching network is (i) operably coupled to the drive inductor and configured to selectively adjust the impedance between the drive inductor and the transmitter coil, or (ii) is operably coupled to the load inductor and configured to selectively adjust the impedance between the load inductor and the receiver coil.

Abstract: A method is provided to produce a custom calendar user interface (UI) display on an electronic device display screen comprising: providing a search query to a user device; sending the search query over the network to a server system; receiving over the network by one or more user devices from a server system, information that identifies one or more code objects that match the search query; using the identified one or more identified code objects by the one or more user devices to generate one or more visual content items within a calendar user interface (UI) grid display on their device display screens.

Abstract: A method is provided to produce a custom calendar user interface (UI) display on an electronic device display screen comprising: providing a search query to a user device; sending the search query over the network to a server system; receiving over the network by one or more user devices from a server system, information that identifies one or more code objects that match the search query; using the identified one or more identified code objects by the one or more user devices to generate one or more visual content items within a calendar user interface (UI) grid display on their device display screens.