Abstract: A DTLS server receives a first DTLS packet from the device to initiate a DTLS session with the DTLS server, wherein the first DTLS packet is encapsulated in a first UDP packet, a header of the first UDP packet includes a destination port number in an unregistered port number range of 1024 to 49151. In response to receiving the destination port number, the DTLS server assigns a Session ID (SID) for the DTLS session. The DTLS server associates a session key for the DTLS session with the SID. The DTLS server sends a second DTLS packet to the device, wherein the second DTLS packet is encapsulated in a second UDP packet, a header of the second UDP packet includes a source port number set to the destination port number, a payload of the second UDP packet includes the second DTLS packet and carries the SID outside the second DTLS packet.

Abstract: A stereoscopic 3D display device, a display method and a grating are provided. The stereoscopic 3D display device is compatible of a 2D display mode, a landscape screen 3D display mode and a portrait screen 3D display mode. The stereoscopic 3D display device comprises a display screen; and a grating arranged opposite to the display screen, wherein in each of the 2D display mode, the landscape screen 3D display mode and the portrait screen 3D display mode, the grating is in a light-splitting state. The grating includes a plurality of grating units arranged in parallel. A grating unit of the plurality of grating units is obliquely disposed with respect to a long side or a short side of the display screen, and an angle formed between the grating unit and the long side or the short side of the display screen is between 30° and 40°.

Abstract: Disclosed herein is a drug-coated medical device in the form of a balloon having an inner surface and an outer hydrophobic surface, an adhesion balance layer directly on the outer hydrophobic surface of the balloon, comprising a hydrophilic polymer and/or a hydrophilic compound where the hydrophilic compound has a molecular weight of less than 1,000 Daltons, and a therapeutic layer directly on the adhesion balance layer comprising a therapeutic agent and a pharmaceutically acceptable carrier, wherein the therapeutic agent is a hydrophobic therapeutic agent with one or more hydrogen-bonding groups and is provided as discrete drug particles in the therapeutic layer, the drug particles have at least one dimension that is less than 25 ??? and are uniformly distributed on the surface of the balloon, and the pharmaceutically acceptable carrier is hydrophilic and has a molecular weight of less than 1,000 Daltons. A process to make the drug-coated medical device and uses thereof are also disclosed.

Abstract: Described herein are coatings and formulations thereof for coating a substrate for use in producing a lubricious coating on a substrate surface that is to be inserted into the body lumen of a subject. Said coatings all contain an adhesion promoting coating formulation for applying to a substrate material that is formed from a polymeric adhesion promoter, a monomeric or polymeric crosslinking agent and a photoinitiator, where the polymeric adhesion promoter is a block copolymer comprising hydrophobic hydrophilic polymer blocks and/or a hydrophilic polymer comprising hydrophilic functional groups, where from 10% to 100% of the hydrophilic functional groups are capped with a hydrophobic functional group and the formulations thereof further contain a solvent to enable the coating to be applied to a substrate surface.

Abstract: A 2D/3D switchable stereoscopic display apparatus includes a display panel, a liquid crystal lens, and a controller. The liquid crystal lens includes a first substrate having a plurality of first electrodes, a second substrate disposed opposite to the first substrate and having a second electrode, a liquid crystal layer constituting liquid crystal molecules disposed between the first substrate and the second substrate, and a plurality spacers. The controller is configured to, when the display apparatus is in a 2D display state, control a first voltage between the first electrodes and the second electrode to generate a first electric field with an equal electric field intensity, which causes the liquid crystal molecules to rotate by a predetermined degree such that a refractive index difference between the liquid crystal molecules and the spacers is within a preset range.

Abstract: A three-dimensional (3D) display apparatus is provided for displaying a 3D image. The 3D display apparatus includes a display panel and a grating device coupled to the display panel. The display panel includes a plurality of display pixels arranged in a two-dimensional array, and each pixel includes multiple sub-pixels. The grating device includes a plurality of grating elements based on liquid crystal to guide lights associated with the plurality of display pixels into predetermined viewing directions. Further, the grating device is one of a lenticular lens grating and a slit grating, and the plurality of grating elements are arranged in parallel. The plurality of grating elements cover the plurality of display pixels and are tilted at an inclination angle with respect to the display pixels, and each grating element comprises a plurality of electrodes arranged at the inclination angle.

Abstract: A switching power supply device includes: a transformer; a first switch connected between a high potential terminal of an input DC voltage source and a primary winding; a second switch connected between a low potential terminal of the input DC voltage source and a primary winding; a control circuit outputting a driving pulse signal for synchronizing the first and second switches; first and second rectifying devices; a synchronous rectifier circuit; and a positive bias circuit that applies a positive bias to a control terminal of one of the first and second switches so as to constantly turn the one of the first and second switches ON. When the first and second switches stop a switching operation while an output voltage exists between the output terminals, the positive bias circuit applies the positive bias to the one of the first and second switches.

Abstract: A switching power supply device includes: a main transformer; a main switch that is connected between a high potential terminal of an input direct current voltage source and a primary-side main winding; a synchronous rectifier circuit includes: a rectifying switch that is connected to a secondary-side main winding in series and that is turned ON in synchronization with a turning ON state of the main switch and a commutation switch that is connected to the rectifying switch series circuit in parallel and that is turned ON in synchronization with a turning OFF state of the main switch; and an auxiliary switch circuit that turns the commutation switch OFF. When the main switch stops a switching operation while a voltage exists at a first output terminal on a high potential side, the auxiliary switch circuit turns the commutation switch OFF to prevent continuation of self-excited oscillation.

Abstract: The present invention belongs to the technical field of three-dimensional display, and provides a liquid crystal lens. The liquid crystal lens includes a first substrate and a second substrate which are arranged oppositely, wherein a plurality of first electrodes are arranged on the first substrate, the first electrodes are arranged at intervals, when the liquid crystal lens is used for three-dimensional display, a plurality of liquid crystal lens units with the same structure are formed between the first substrate and the second substrate, two adjacent liquid crystal lens units share one first electrode, a plurality of second electrodes are arranged on one side of the second substrate facing to the first substrate, the second electrodes are arranged at intervals, an opening portion is formed between two adjacent second electrodes.

Abstract: A power supply circuit includes a plurality of output terminals that output voltages (voltages may have the same or different voltage values among the output terminals), and a transformer that has a plurality of output windings. First and second output windings of the plurality of output windings are coupled to each other. The first and second output windings have the same number of turns. First terminals, which have a first polarity, of the first and second output windings are connected to each other via a capacitor. Further, second terminals, which have a second polarity opposite to the first polarity, of the first and second output windings are electrically connected to each other. The second terminals of the first and second output windings may be directly connected to each other.

Abstract: A switching power supply device includes: a main transformer; a main switch that is connected between a high potential terminal of an input direct current voltage source and a primary-side main winding; a synchronous rectifier circuit includes: a rectifying switch that is connected to a secondary-side main winding in series and that is turned ON in synchronization with a turning ON state of the main switch and a commutation switch that is connected to the rectifying switch series circuit in parallel and that is turned ON in synchronization with a turning OFF state of the main switch; and an auxiliary switch circuit that turns the commutation switch OFF. When the main switch stops a switching operation while a voltage exists at a first output terminal on a high potential side, the auxiliary switch circuit turns the commutation switch OFF to prevent continuation of self-excited oscillation.

Abstract: A switching power supply device includes: a transformer; a first switch connected between a high potential terminal of an input DC voltage source and a primary winding; a second switch connected between a low potential terminal of the input DC voltage source and a primary winding; a control circuit outputting a driving pulse signal for synchronizing the first and second switches; first and second rectifying devices; a synchronous rectifier circuit; and a positive bias circuit that applies a positive bias to a control terminal of one of the first and second switches so as to constantly turn the one of the first and second switches ON. When the first and second switches stop a switching operation while an output voltage exists between the output terminals, the positive bias circuit applies the positive bias to the one of the first and second switches.

Abstract: A 2D/3D switchable stereoscopic display apparatus includes a display panel, a liquid crystal lens, and a control module. The liquid crystal lens is coupled with the display panel at a light-emitting side, and includes a first substrate having a plurality of first electrodes, a second substrate disposed opposite to the first substrate and having a second electrode, a liquid crystal layer constituting liquid crystal molecules disposed between the first substrate and the second substrate, and a plurality spacers. The control module is configured to, when the display apparatus is in a 2D display state, control a first voltage between the first electrodes and the second electrode to generate a first electric field with an equal electric field intensity, which causes the liquid crystal molecules to rotate by a predetermined degree such that a refractive index difference between the liquid crystal molecules and the spacers is within a preset range.

Abstract: A method of making a membrane and a membrane made from the method are provided. The method comprises coupling a vesicle to a support substrate, the vesicle comprising a plurality of water channels; and partially embedding the vesicle coupled to the support substrate in a layer of material that is substantially impermeable to water to form the membrane.

Abstract: A three-dimensional (3D) display apparatus is provided for displaying a 3D image. The 3D display apparatus includes a display panel and a grating device coupled to the display panel. The display panel includes a plurality of display pixels arranged in a two-dimensional array, and each pixel includes multiple sub-pixels. The grating device includes a plurality of grating elements based on liquid crystal to guide lights associated with the plurality of display pixels into predetermined viewing directions. Further, the grating device is one of a lenticular lens grating and a slit grating, and the plurality of grating elements are arranged in parallel. The plurality of grating elements cover the plurality of display pixels and are tilted at an inclination angle with respect to the display pixels, and each grating element comprises a plurality of electrodes arranged at the inclination angle.

Abstract: A method and a system for controlling quality of service of a storage system, and a storage system. The method includes: collecting information about processing capabilities of the hard disks in the storage system and obtaining processing capabilities of the hard disks according to the information about processing capabilities; dividing a cache into multiple cache tiers according to the processing capabilities of the hard disks; and writing, for a cache tier in which dirty data reaches a preset threshold, data in the cache tier into at least one hard disk corresponding to the cache tier. The method avoids a phenomenon of preempting page resources in the cache.

Abstract: A power supply circuit includes a plurality of output terminals that output voltages (voltages may have the same or different voltage values among the output terminals), and a transformer that has a plurality of output windings. First and second output windings of the plurality of output windings are coupled to each other. The first and second output windings have the same number of turns. First terminals, which have a first polarity, of the first and second output windings are connected to each other via a capacitor. Further, second terminals, which have a second polarity opposite to the first polarity, of the first and second output windings are electrically connected to each other. The second terminals of the first and second output windings may be directly connected to each other.

Abstract: A method and a system for controlling quality of service of a storage system, and a storage system. The method includes: collecting information about processing capabilities of the hard disks in the storage system and obtaining processing capabilities of the hard disks according to the information about processing capabilities; dividing a cache into multiple cache tiers according to the processing capabilities of the hard disks; and writing, for a cache tier in which dirty data reaches a preset threshold, data in the cache tier into at least one hard disk corresponding to the cache tier. The method avoids a phenomenon of preempting page resources in the cache.