Abstract: The present disclosure relates to a spring winder having a winder base, pulleys disposed at one end of the winder base, at least one constant force spring disposed on the winder base, each constant force spring having an extension end, and a guard plate is disposed at one side of the extension end of each constant force spring. A curtain using the spring winder is also described having an upper beam; a lower beam; and a curtain disposed between the upper beam and the lower beam, the upper beam having a spring winder disposed therein; a fixed plug head disposed at one end of the upper beam, a fixed pulley plug head disposed at the other end of the upper beam, each constant force spring of the spring winder being connected to the fixed plug head, a cord winding around the pulleys, the cord being connected to the pulleys at the fixed pulley plug head after being connected to the curtain.

Abstract: A computer-implemented method includes determining a set of parameters defining an arrangement of a plurality of copies of a standard barcode in two or more of layers of a layered barcode encoding subject data. The layered barcode has a plurality of cells, and for each cell in the layered barcode, a combined value for the cell is determined, where the combined value of the cell indicates a respective value of each layer at the cell, and the combined value is mapped to a color corresponding to the combined value. The plurality of layers of the layered barcode are generated, such that, at each cell of the plurality of cells, the layered barcode includes the color corresponding to the combined value of the cell.

Abstract: A computer-implemented method includes determining a set of parameters defining an arrangement of a plurality of copies of a standard barcode in two or more of layers of a layered barcode encoding subject data. The layered barcode has a plurality of cells, and for each cell in the layered barcode, a combined value for the cell is determined, where the combined value of the cell indicates a respective value of each layer at the cell, and the combined value is mapped to a color corresponding to the combined value. The plurality of layers of the layered barcode are generated, such that, at each cell of the plurality of cells, the layered barcode includes the color corresponding to the combined value of the cell.

Abstract: A head-mounted display device including a front element, a pair of extending portions, an adjustable fixing assembly, a top adjustable fixing assembly, a rear adjustable fixing assembly, and a rotatable adjusting mechanism is provided. The front element is adapted to be placed or be installed with a display device and is adapted to cover eyes of a user. The top adjustable fixing assembly is adapted to be in contact with a parietal bone of the user. The rear adjustable fixing assembly is adapted to be in contact with an occipital bone of the user. The adjustable fixing assembly and the top adjustable fixing assembly are adjustable according to head shapes of different users. The rotatable adjusting mechanism adjusts the rear adjustable fixing assembly so that the rear adjustable fixing assembly is adapted to head shapes of different users.

Abstract: A virtual reality (VR) controller includes a handle, a side housing, and a switch. The side housing has a fixed portion and a flexible portion. The fixed portion is fixed to the handle, and a contour of the side housing extending toward the handle conforms to a shape of a palm. The switch is disposed between the handle and the side housing. The flexible portion is deformed to trigger the switch when the handle and the side housing are held and a force is applied to the flexible portion relative to the handle. In other words, the flexible portion abutting against the palm is deformed to trigger the switch when the handle and the side housing are held and a force is applied, relative to the flexible portion, to one side of the handle far away from the flexible portion.

Abstract: Examples of techniques for quick response (QR) code deformation are described herein. An aspect includes receiving a first QR code, wherein the first QR code is scannable by a QR code scanner at a first range of angles. Another aspect includes determining a scanner angle, the scanner angle being outside of the first range of angles. Another aspect includes generating a second QR code based on the first QR code and the scanner angle, wherein the second QR code comprises a deformed QR code that is scannable by the QR code scanner at a second range of angles that is distinct from the first range of angles.

Abstract: A package structure, a die and method of forming the same are provided. The package structure includes a die, an encapsulant, a RDL structure, and a conductive terminal. The die has a connector. The connector includes a seed layer and a conductive on the seed layer. The seed layer extends beyond a sidewall of the conductive pillar. The encapsulant is aside the die and encapsulates sidewalls of the die. The RDL structure is electrically connected to the die. The conductive terminal is electrically connected to the die through the RDL structure.

Abstract: Disclosed are a lens driving device, a camera device and an electronic apparatus equipped with the lens driving device. When the lens driving device is mounted on the circuit board, the power supply terminal is less likely to fall off from the base. The lens driving device of the present disclosure includes a base, a lens support, and a driving mechanism that drives the lens support in the optical axial direction. The base is integrally provided with a power supply terminal mounted on an external circuit board and used for supplying power to the driving mechanism. A fall-off preventive portion is formed in at least a part of a contact portion that is in contact with the base on the power supply terminal.

Abstract: Compositions and methods are provided for enzymes with altered properties that involve a systematic approach to mutagenesis and a screening assay that permits selection of the desired proteins. Embodiments of the method are particularly suited for modifying specific properties of restriction endonucleases such as star activity. The compositions includes restriction endonucleases with reduced star activity as defined by an overall fidelity index improvement factor.

Abstract: An immersive headset system includes a headset device and a displaying device. The headset device includes a pupillary sensor for determining an interpupillary distance value. The displaying device is communicated with the headset device. The displaying device includes a display panel for displaying an immersive content. The immersive content includes a right visual window and a left visual window. The right visual window and the left visual window are displayed synchronously at different positions on the display panel. When the displaying device receives the interpupillary distance value from the headset device, the right visual window and the left visual window of the immersive content are allocated by the displaying device according to the interpupillary distance value.

Abstract: A perpendicularly magnetized spin-orbit magnetic device including a heavy metal layer, a magnetic tunnel junction, a first antiferromagnetic layer, a first block layer and a first stray field applying layer is provided. The magnetic tunnel junction is disposed on the heavy metal layer. The first block layer is disposed between the magnetic tunnel junction and the first antiferromagnetic layer. The first stray field applying layer is disposed between the first antiferromagnetic layer and the first block layer. The magnetic tunnel junction comprises a free layer, a tunneling barrier layer, and pinned layer. The tunneling barrier layer is disposed on the free layer. The pinned layer is disposed on the tunneling barrier layer. A film plane area of the free layer is greater than a film plane area of the tunneling barrier layer and a film plane area of the pinned layer.

Abstract: A lean burn fuel injector has a head which has a coaxial arrangement of an inner pilot air-blast fuel injector and an outer main air-blast fuel injector. The pilot fuel injector comprises coaxially arranged inner and outer air swirler passages. The main fuel injector comprises coaxially arranged inner and outer air swirler passages. A first splitter is arranged between the passages. The first splitter has a conical divergent downstream portion. A second splitter is arranged radially within and spaced from the first splitter. The second splitter has a conical convergent portion and a conical divergent downstream portion. The downstream end of the second splitter is upstream of the downstream end of the first splitter. A connecting member connects the downstream end of the second splitter and the downstream portion of the first splitter upstream of the downstream end of the first splitter to form a sharp edge.

Abstract: An embodiment is a structure including a first die, a molding compound at least laterally encapsulating the first die, a first redistribution structure including metallization patterns extending over the first die and the molding compound, a first conductive connector comprising a solder ball and an under bump metallization coupled to the first redistribution structure, and an integrated passive device bonded to a first metallization pattern in the first redistribution structure with a micro bump bonding joint, the integrated passive device being adjacent the first conductive connector.

Abstract: Aspects of the technology relate to a cover (e.g., for a handheld electronic device). The cover may include a cover body configured for securement to a handheld electronic device and comprising an accessory attachment area, wherein the accessory attachment area includes a plurality of receivers, and wherein the accessory attachment area is configured for coupling with an accessory in at least one of a plurality of orientations. In some aspects, each receiver further includes a space recessed into the cover body that is bounded, at least partially, by a recess wall, wherein each receiver includes an engagement surface configured for abutting engagement with a projection associated with an accessory when the projection is disposed in a secured configuration within a respective space. An electrical device cover and various attachment devices are also provided.