Abstract: A rollable display device including a rollable display panel including a plurality of pixels each having an organic light emitting element, a panel driving circuit configured to drive the rollable display panel, a power supplying circuit configured to supply a high power voltage and a low power voltage to the rollable display panel, such that the organic light emitting element emits light based on the high power voltage and the low power voltage, and an ohmic drop compensation margin changing circuit configured to sense a degree that the rollable display panel is unrolled and change an ohmic drop compensation margin of the low power voltage to compensate ohmic drops based on the degree that the rollable display panel is unrolled.

Abstract: At least one example embodiment discloses a semiconductor device including a direct memory access (DMA) system configured to directly access a memory to write first data to an address of the memory, wherein the DMA system includes an initializer configured to set a data transfer parameter for writing the first data to the memory during a flushing period of second data from a cache to the address by a processor, a creator configured to create the first data based on the set data transfer parameter, and a transferer configured to write the first data to the address of the memory after the flushing period based on the data transfer parameter.

Abstract: A system on chip (SoC) includes a central processing unit (CPU), an intellectual property (IP) block, and a memory management unit (MMU). The CPU is configured to set a prefetch direction corresponding to a working set of data. The IP block is configured to process the working set of data. The MMU is configured to prefetch a next page table entry from a page table based on the prefetch direction during address translation between a virtual address of the working set of data and a physical address.

Abstract: A touch sensor includes driving electrodes, sensing electrodes, a memory, and a driver. The sensing electrodes are insulated from and cross the driving electrodes. The memory includes signal width information. The driver is configured to: determine signal widths to generate driving signals based on the signal width information; and supply the driving signals to the driving electrodes.

Abstract: A display device may include a first touch sensing member on a top surface of a display panel, a second touch sensing member on a bottom surface of the display panel, a main FPCB coupled to the display panel and including first and second connecting portions, a first touch FPCB connected to the first touch sensing member and the first connecting portion, a second touch FPCB connected to the second touch sensing member and the second connecting portion, a first touch driving circuit on the first touch FPCB, and a second touch driving circuit on the second touch FPCB. The first touch driving circuit and the first connecting portion may be positioned opposite to each other with respect to the main FPCB. The second touch driving circuit and the second connecting portion may be positioned opposite to each other with respect to the main FPCB.

Abstract: A method for controlling and an electronic device processing the method are provided. The electronic device includes a communication module configured to establish a communication link with a second electronic device, and a control module configured to perform a sharing operation based on at least one of a setting state of an execution screen of the electronic device and the communication module sensing the proximity of the second electronic device, in response to the searching of the second electronic device.

Abstract: The present invention relates to a near-field wireless power transfer system capable of having a constant efficiency regardless of a charging position of a receiver by only using a simple impedance matching circuit without using a separate existing complex adaptive impedance matching circuit or control circuit, and simultaneously transmitting power without having difficulty with impedance matching even for wireless power transmission to a plurality of electronic devices by applying a structure having a uniform mutual inductance between a wireless power transmitter and receiver.

Abstract: A pixel unit includes a first organic light emitting diode for a front-side emission, a second organic light emitting diode for a back-side (both-sides) emission, and a pixel circuit configured to driver the first and second organic light emitting diodes. The pixel unit PU may include a pixel circuit, a first organic light emitting diode and a second organic light emitting diode.

Abstract: Provided is a piston for an internal combustion engine, the piston including a body having a piston pin boss for inserting a piston pin thereinto, and a skirt corresponding to a cylinder wall, and a cooling channel provided in the body to allow a refrigerant for cooling the body, to flow therethrough, and having a ring shape including a first channel provided from a refrigerant inlet to a refrigerant outlet along a first outer circumferential direction of the body, and a second channel provided from the refrigerant inlet to the refrigerant outlet along a second outer circumferential direction of the body.

Abstract: Provided are a resin composition for coating an engine piston and a method of fabricating the same. The resin composition contains carbon nanotubes (CNTs) as a reinforcement and is capable of providing a coated layer on at least a part of the engine piston, and the method includes adjusting a parameter expressed as a product of a weight ratio of CNTs in the resin composition and an average aspect ratio of CNTs, to control a coefficient of friction of the coated layer and viscosity of the resin composition.

Abstract: Provided is a piston for an internal combustion engine, the piston including a body having a piston pin boss for inserting a piston pin thereinto, and a skirt corresponding to a cylinder wall, and a cooling channel provided in the body to allow a refrigerant for cooling the body, to flow therethrough, and having a ring shape including a first channel provided from a refrigerant inlet to a refrigerant outlet along a first outer circumferential direction of the body, and a second channel provided from the refrigerant inlet to the refrigerant outlet along a second outer circumferential direction of the body.

Abstract: An antenna assembly includes an antenna feed, and a first radiating element connecting to the antenna feed, where the first radiating element includes a proximal radiating segment and a distal radiating segment. The antenna assembly also includes a tunable circuit coupling the proximal radiating segment and the distal radiating segment. The tunable circuit is configured to adjust a resonant frequency of the antenna assembly to a predetermined frequency.

Abstract: A host includes a cache including a plurality of cache lines, a command descriptor list configured to store a command transmitted from one of the plurality of cache lines, a host controller including a direct memory access (DMA) device that accesses the command descriptor list, and a processor configured to determine a size of the command descriptor list based on a size of the one of the plurality of cache lines.

Abstract: Techniques and instruments for surgical transosseous attachment to a bone include a guide able to guide the formation of intersecting bone tunnels and a retriever able to retrieve a suture through the bone tunnels.

Abstract: A method of operating a host controller interface includes receiving a buffer descriptor including sector information from a main memory, fetching data by using a source address included in the buffer descriptor, selecting one of a plurality of entries included in a security policy table by using the sector information, and determining whether to encrypt the fetched data by using a security policy included in the selected entry.

Abstract: A magnetic resonance wireless power transfer method according to an aspect of the present invention includes transmitting power from a source coil to the Tx resonant coil using a magnetic induction method, transmitting the power from the Tx resonant coil to an Rx resonant coil, having a resonant frequency identical with that of the Tx resonant coil, via magnetically-coupled resonance, and transmitting the power from the Rx resonant coil to the device coil of an electronic device using the magnetic induction method. The Tx resonant coil and the Rx resonant coil are arranged at a right angle or a specific angle of inclination relative to each other.

Abstract: In one example an electronic device comprises a controller and a chassis comprising a polymer layer, a first metallic layer deposited on a first side of the polymer layer, and a second metallic layer deposited on a second side of the polymer layer, wherein at least one of the first metallic layer or the second metallic layer comprises an electrically functional integrated structure. Other examples may be described.

Abstract: An aircraft flap blow back prevention device includes a first ball-ramp plate, and output coupling engaged therewith, rotatable about an axis. A second ball-ramp plate is disposed adjacent the first plate such that ball-ramp surfaces thereof are opposed, with a ball therebetween, and such that first and second braking surfaces thereof oppose respective first and second stationary braking structures. A spring biasing the first plate toward the second plate spaces apart the first braking surface and first braking structure. An input shaft axially extends through the first and second plates in a lost window arrangement, wherein an absolute value of rotational torque applied to the output coupling, greater than rotational torque applied to the input shaft, causes the ball to urge apart the plates and the braking surfaces thereof to be urged against the respective braking structures to cease rotation of the output coupling. An associated method is also provided.

Abstract: A printing method for printing a multi-material 3D model comprises the following steps: perform a slicing process on a multi-material 3D object to generate the multi-material object slices and the object slices of a useful object; compute a material-switching point and a retrieving point during the slicing process; print the multi-material object slices of a multi-material 3D model with one of the materials; when print to the material-switching point, switch to another different material and print useful objects with the material used before the material switching; when print to the retrieving point, print the multi-material object slices with the material used after the material switching; and repeat the above steps until completing the multi-material 3D model printing. The present disclosed example prints the useful object via the remaining materials after the material switching which effectively reduces the cost with of multi-materials printing.

Abstract: A window assembly for a vehicle has a transparent layer including a metal compound such that the transparent layer as is electrically conductive. The transparent layer defines an area covering the window assembly. An outer region which is electrically non-conductive surrounds the area. The window assembly includes an antenna element including wire or transparent coating disposed within and surrounded by the outer region without extending into the transparent layer. The antenna element is electrically disconnected from the transparent layer such that the antenna element operates independent of the transparent layer. A feeding element is coupled to the antenna element for energizing the antenna element. The feeding element is electrically disconnected from the transparent layer such that the feeding element energizes the antenna element independent of the transparent layer.