Abstract: Systems and methods for blockchain services with a multicurrency blockchain platform.

Abstract: The disclosure relates to an optical waveguide for a display device and to a method for controlling such an optical waveguide. The optical waveguide has a switchable input coupling hologram and an electrode for switching the switchable input coupling hologram. The electrode is designed as an electrode array having a pixel matrix. The pixels of the pixel matrix can be switched individually. For this purpose, the pixels can be connected to a voltage source. Controlling the pixels is performed by a control unit.

Abstract: Systems and methods for payment processing using cryptocurrency assets.

Abstract: A method for managing sensitive data, including: receiving an encryption key from a third party recovery agent; at a user agent executing on a user device, encrypting the sensitive data with the encryption key; and storing the encrypted sensitive data at a third party storage provider system. The method can optionally include, at the user agent: requesting the encryption key from the third party recovery agent using a set of recovery agent authentication credentials; requesting the encrypted sensitive data from the third party storage provider system using a set of storage provider authentication credentials; and decrypting the encrypted sensitive data using the encryption key.

Abstract: The disclosure relates to an optical waveguide for a display device and to a method for controlling such an optical waveguide. The optical waveguide has a switchable input coupling hologram and an electrode for switching the switchable input coupling hologram. The electrode is designed as an electrode array having a pixel matrix. The pixels of the pixel matrix can be switched individually. For this purpose, the pixels can be connected to a voltage source. Controlling the pixels is performed by a control unit.

Abstract: The disclosure relates to an optical waveguide for a display device and to a method for producing such an optical waveguide. The optical waveguide has a substrate on which a hologram layer is arranged. A cover layer includes a light-transmissive material that has been subjected to a curing process is arranged on the hologram layer. The substrate can consist of glass. Alternatively, the substrate likewise consists of a light-transmissive material that has been subjected to a curing process.

Abstract: The disclosure relates to an optical waveguide for a display device and to a device for generating a virtual image using such an optical waveguide. The optical waveguide has two or more partial optical waveguides adapted to different wavelengths. At least one of the partial optical waveguides in this case has an optical filter. The optical filter is adapted to the wavelengths used.

Abstract: A heat exchanger, providing indirect heat transfer between a first fluid and at least one second fluid, comprises a jacket enclosing a jacket space for accommodating the first fluid and a tube bundle arranged in the jacket space and having a plurality of tubes for accommodating the at least one second fluid. The tubes form multiple tube layers. A shroud arranged in the jacket space encloses an outermost tube layer of the tube bundle. Spacers extending along the longitudinal axis are arranged between the shroud and the outermost tube layer. An interspace is present between any two spacers adjacent in the circumferential direction of the shroud, and between the shroud and the uppermost tube layer. A flow obstruction is arranged in the respective interspace and is designed to prevent or suppress a flow of the first fluid in the respective interspace, at least over a part section thereof.

Abstract: Systems and methods for payment processing using cryptocurrency assets.

Abstract: Systems and methods for participation in blockchain administration.

Abstract: A method for managing sensitive data, including: receiving an encryption key from a third party recovery agent; at a user agent executing on a user device, encrypting the sensitive data with the encryption key; and storing the encrypted sensitive data at a third party storage provider system. The method can optionally include, at the user agent: requesting the encryption key from the third party recovery agent using a set of recovery agent authentication credentials; requesting the encrypted sensitive data from the third party storage provider system using a set of storage provider authentication credentials; and decrypting the encrypted sensitive data using the encryption key.

Abstract: A heat exchanger provides indirect heat transfer between a first fluid and at least one second fluid. The heat exchanger comprises a jacket which encloses a jacket space for accommodating the first fluid and a tube bundle arranged in the jacket space and having a plurality of tubes for accommodating the at least one second fluid, the tubes forming multiple tube layers, and a shroud arranged in the jacket space and encloses an outermost, tube layer of the tube bundle. Spacers extending along the longitudinal axis are arranged between the shroud and the outermost tube layer, an interspace is present between any two spacers adjacent in the circumferential direction of the shroud, and between the shroud and the uppermost tube layer. A flow obstruction is arranged in the respective interspace and is designed to prevent or suppress a flow of the first fluid in the respective interspace, at least over a part section thereof.

Abstract: A display device has a scale in the shape of a circular arc. On an axis driving an indicator axis, a rotatably mounted gear wheel is arranged in a rotatably fixed manner, in the teeth of which the toothing of a wobble gear ring partially engages. The wobble gear ring is mounted about the axis of the rotatably mounted gear wheel such that the wobble gear ring can wobble, is acted upon by spring forces distributed around the periphery of the wobble gear ring in the direction of engagement of the toothing of the wobble gear ring in the teeth of the rotatably mounted gear wheel, and is fixedly connected to a ferromagnetic ring extending in the direction of rotation of the wobble gear ring. At least two pole shoes project through independently energizable coils to the outer circumferential surface of the ferromagnetic ring.

Abstract: An operator control device includes: an activation element configured to provide haptic feedback to an operator, the activation element having a touch-sensitive operator control surface, and the activation element being configured to be activatable by an input member of the operator, triggering an activation signal; a pivoting axis to which the activation element is mounted so as to be pivotable about the axis between a position of rest and a switching position; a rotationally mounted magnetically influenceable element; and an electromagnetic actuator configured to be actuatable by the activation signal so as to generate a magnetic field that moves the rotationally mounted magnetically influenceable element from an initial position into a pivoting position. The movement of the magnetically influenceable element results in a torque sufficient to move the activation element out of the position of rest into the switching position being applied directly or indirectly to the activation element.

Abstract: An operator control device includes an operator control element configured to provide haptic feedback to an operator. The operator control element is activatable by an input member of the operator and has: a first planar component; and a second planar component oriented in parallel with the first planar component, the first and second planar components being movable relative to one another. The first and second planar components are guidable between a position of rest and an activation position while maintaining their parallel orientation with respect to one another. In the activation position the distance between the first and second planar components is smaller than in the position of rest. The first and second planar components are spring loaded in the position of rest.

Abstract: A display device has a scale in the shape of a circular arc. On an axis driving an indicator axis, a rotatably mounted gear wheel is arranged in a rotatably fixed manner, in the teeth of which the toothing of a wobble gear ring partially engages. The wobble gear ring is mounted about the axis of the rotatably mounted gear wheel such that the wobble gear ring can wobble, is acted upon by spring forces distributed around the periphery of the wobble gear ring in the direction of engagement of the toothing of the wobble gear ring in the teeth of the rotatably mounted gear wheel, and is fixedly connected to a ferromagnetic ring extending in the direction of rotation of the wobble gear ring. At least two pole shoes project through independently energizable coils to the outer circumferential surface of the ferromagnetic ring.

Abstract: An operating device having an operating element with haptic feedback. The operating element can be actuated by an operator by means of an input member, the operating device includes two ferromagnetic planar components and a flat coil. The largest surfaces of the ferromagnetic planar components are oriented toward each other and the components can be moved relative to each other. The flat coil is disposed between the ferromagnetic components and the ferromagnetic planar components can be moved toward each other by energizing the flat coil. The movement of one of the ferromagnetic planar components can be perceptible to the tactile sense of the operator on the operating element either directly or by a coupling device.

Abstract: A magnet assembly, having a disk-shaped magnet, which is made predominantly of metal material and has a through-hole and, by the through-hole, can be placed onto a region of a shaft made of plastic by a press fit. In the region of the magnet placed onto the shaft, the shaft has a diameter that is smaller than the diameter of the through-hole. The shaft has a plurality of radially protruding projections in the region of the magnet placed onto the shaft. The projections are distributed evenly on the circumference of the shaft and, with respect to the longitudinal axis of the shaft, having a radius, the double of which is oversized relative to the diameter of the through-hole before the magnet is placed onto the projections of the shaft.

Abstract: A needle bearing (1) with at least one bearing shell (3) for needle-shaped roller bodies (5) and with a cage (4) for guiding the roller bodies (5), wherein a retaining tab (10) formed on the cage (4) interacts axially with the bearing shell (3) for securing the cage (4). Furthermore, a roller bearing assembly with a needle bearing of this type is provided, additionally with a thrust washer (15) for securing the cage (4) that interacts axially with the cage (4), supplementing the interaction of the retaining tab (10) with the bearing shell (3).

Abstract: An operating device includes a handle, a sensor system and an actuator. The handle is configured to be: manually deflectable from an inoperative position relative to an axis, and rotatable about the axis, and/or displaceable axially with respect to the axis, and/or tiltable in relation to the axis, and/or displaceable transversely with respect to the axis. The sensor system is configured to detect the deflection of the handle and has a haptics device by which the handle can be subjected to the action of a haptically detectable effect in correspondence with the deflection of the handle. The actuator, to which the handle is fixedly connected, is configured to drive the handle such that the actuator can be moved alternately in one degree of freedom by a movement distance of <1 mm depending on the deflection of the handle.