Abstract: A 5D printer, which additively manufactures an object, includes an extruder that can move linearly along three orthogonal axes and rotationally around at least one of the axes with respect to the object while depositing a material. A gantry is movable along X, Y and Z axes, and a trunnion table movable about A and B axes is mounted on the gantry. A platen is mounted on the trunnion table, and the extruder deposits the material on the platen while moving the gantry and trunnion table. A model of the object is analyzed to produce a stress tensor for the object, and the depositing is according to the stress tensor.

Abstract: Spacecraft including a spacecraft bus. An additive manufacturing system of the spacecraft bus including at least one extruder for delivering feedstock to print an object outside of the spacecraft bus. A sensor for determining a pose of the spacecraft bus relative to an astronomical body. At least one processor in communication with the additive manufacturing system and the sensor, controls an operation of the additive manufacturing system as a function of the pose of the spacecraft bus, to manufacture the object outside of the spacecraft bus.

Abstract: A 5D printer, which additively manufactures an object, includes an extruder that can move linearly along three orthogonal axes and rotationally around at least one of the axes with respect to the object while depositing a material. A gantry is movable along X, Y and Z axes, and a trunnion table movable about A and B axes is mounted on the gantry. A platen is mounted on the trunnion table, and the extruder deposits the material on the platen while moving the gantry and trunnion table. A model of the object is analyzed to produce a stress tensor for the object, and the depositing is according to the stress tensor.

Abstract: An elevator including a car is arranged in a shaft. A set of compensator cables are attached to a bottom of the car and engaged with a compensator drum. A set of hoist cables are attached to a top of the car and engaged with a hoist drum to move the car vertically in the shaft, wherein the set of compensator cables and the set of hoist cables are configured to only move the car vertically.

Abstract: A system includes a structure configured to exchange the energy wirelessly via a coupling of evanescent waves and an anisotropic metamaterial arranged within an electromagnetic near-field such that an amplitude of the evanescent waves is increased. The structure is electromagnetic and non-radiative, wherein the structure generates the electromagnetic near-field in response to receiving the energy.

Abstract: A system for transferring energy wirelessly includes a source for generating a circular polarized field in response to receiving the energy and a sink strongly coupled to the source for receiving the energy wirelessly via a resonant coupling of the field.

Abstract: An elevator including a car is arranged in a shaft. A set of compensator cables are attached to a bottom of the car and engaged with a compensator drum. A set of hoist cables are attached to a top of the car and engaged with a hoist drum to move the car vertically in the shaft, wherein the set of compensator cables and the set of hoist cables are configured to only move the car vertically.

Abstract: Embodiments of the invention disclose a system configured to exchange energy wirelessly. The system includes a structure configured to exchange the energy wirelessly via a coupling of evanescent waves, wherein the structure is electromagnetic (EM) and non-radiative, and wherein the structure generates an EM near-field in response to receiving the energy; and an anisotropic metamaterial arranged within the EM near-field such that the coupling is enhanced.

Abstract: A method and apparatus for minimizing harmonic interference in a radio receiver is presented. A received radio signal is periodically switched to an integrator as a positive signal, periodically switched to the integrator as a negative signal, and the integrator is periodically switched to ground to block the received signal from the integrator to minimize the harmonic interference.

Abstract: A display system includes display elements embedded in a playing surface. The display elements are configured to display images or video in the playing surface. The playing surface can be a soccer field, a football field, a rugby field, a baseball field, a track field, a horse racing track, a tennis court, a basketball court, a performance stage, and combinations thereof.

Abstract: A method generates mechanical energy by storing water in a fuel-cell and a pressure equalization device. The water stored in the fuel-cell is electrolyzed into hydrogen gas and oxygen gas, which displaces the water stored in the pressure equalization device. The displaced water is fed to a hydraulic device to drive the hydraulic device in a forward direction to produce mechanical energy.

Abstract: A camera aperture includes a first polarizer and a second polarizer with a polarization 90° with respect to the first polarizer. The second polarizer has a through hole at a center. A polarizing rotator is disposed between the first polarizer and the second polarizer. A size of the aperture is changed when a voltage is applied selectively to the polarizing rotator.

Abstract: A system differentiates user controls by arranging a conductive surface in a close approximation to each control. A transmitter is connected to the conductive surfaces. The transmitter emits a unique signal to each conductive surface. Electrodes are arranged in close proximity to users of the controls, and a receiver is connected to each corresponding electrode. A particular user is associated with a particular control when the particular user is capacitively coupled to a particular conductive surface via the electrode, the receiver and the transmitter.

Abstract: A cell phone includes illuminated components and a proximity sensor. The proximity sensor detects when the cell phone is coupled to the ear of a user. Therefore, the proximity detector is placed, in part, near the loudspeaker of the cell phone. The proximity sensor controls the illumination of the illuminated components according to the coupling. The illumination is off when coupled, an on when not coupled. The amount of illumination can depend to the intensity of ambient light as measured by a photodiode.

Abstract: Touch screen interfaces suffer from a visual-motor conflict when the user attempt to interact with a virtual object but experiences no physical sensations resulting from that interaction. This can result in uncertainly and decrease performance as well as overall satisfaction with the interface. We introduce a method and device that resolves these issues in stylus-based interfaces for both single and multi-user environments by providing individualized haptic and acoustic feedback. This is achieved by adding a mechanical actuator and acoustic generator to each stylus. These are controlled to respond appropriately to virtual objects and are capable of simulating a variety of physical sensations. Because the feedback is generated by the stylus rather than the screen or touch surface, the current invention can operate at the individual level even in the presence of multiple simultaneous users.

Abstract: A method authenticates di identities in parallel using two prime numbers p and q such that q|p?1. Each identity includes a private key si and a public key vi, and a publicly known generator is ? such that ?q?1 (mod p). A verifier is provided with an ordered list of the public keys vi. A prover selects uniformly at random a non-negative number r less than q. A number x=?r (mod p) is sent from the prover to a verifier. The verifier selects uniformly at random a non-negative number e less than 2(t+logd), where log is base 2, and a number t is a predetermined security parameter. The prover receives from the verifier the number e. A number y=r+?i si*ei (mod q) is generated by the prover, and the number Y is sent to the verifier, who then determines if an equality x=?y*?i(vi)ei (mod p) is true. The prover is accepted as having the di identities if and only if the equality is true. In a preferred embodiment the communications between the prover and the verifier is via a low-bandwidth optical channel.