Samsung

About: Samsung is a company organization based out in Seoul, South Korea. It is known for research contribution in the topics: Layer (electronics) & Signal. The organization has 134067 authors who have published 163691 publications receiving 2057505 citations. The organization is also known as: Samsung Group & Samsung chaebol.

Method and apparatus for unlocking electronic appliance

Abstract: An unlocking method and apparatus for an electronic appliance are disclosed. The method and apparatus may enable a user to unlock the electronic appliance by identifying a gesture and to invoke a function mapped to the gesture. The unlocking method includes detecting a preset gesture input when an input means is locked. The method includes unlocking the input means in response to the input gesture. The method also includes invoking an application mapped to the input gesture in response to unlocking.

A reconfigurable FTL (flash translation layer) architecture for NAND flash-based applications

Abstract: In this article, a novel FTL (flash translation layer) architecture is proposed for NAND flash-based applications such as MP3 players, DSCs (digital still cameras) and SSDs (solid-state drives). Although the basic function of an FTL is to translate a logical sector address to a physical sector address in flash memory, efficient algorithms of an FTL have a significant impact on performance as well as the lifetime. After the dominant parameters that affect the performance and endurance are categorized, the design space of the FTL architecture is explored based on a diverse workload analysis. With the proposed FTL architectural framework, it is possible to decide which configuration of FTL mapping parameters yields the best performance, depending on the differing characteristics of various NAND flash-based applications.

Method and apparatus for beamforming in ofdm wireless systems

Abstract: Systems and methods are disclosed for use in a wireless network that promotes simultaneous beamforming. These systems and methods include determining the Channel Quality Indicator (CQI) and Best Beam Index (BBI) for communications between a plurality of mobile stations and a base station, ranking the plurality of mobile stations in a list according to the determined CQI and BBI, and selecting a subset of the plurality of mobile stations for simultaneous beamformed communications. These systems and methods may also include verifying the selected subset of the plurality of mobile stations do not have a conflict and initiating beamformed communications. BBI is determined based on a predetermined codebook, which is function of antenna configuration as shown in equation 2 and 5. Any other codebook use equations 2 and 5 as their subset can also be applied.

Highly tunable self-assembled nanostructures from a poly(2-vinylpyridine-b-dimethylsiloxane) block copolymer.

Abstract: An extraordinarily large degree of tunability in geometry and dimension is demonstrated in films of a self-assembled block copolymer. A poly(2-vinylpyridine-b-dimethylsiloxane) block copolymer with highly incompatible blocks was spun-cast on patterned substrates and treated with various solvent vapors. The degree of selective swelling in the poly(2-vinylpyridine) matrix block could be controlled over an extensive range, leading to the formation of various microdomain morphologies such as spheres, cylinders, hexagonally perforated lamellae, and lamellae from the same block copolymer. The systematic control of swelling ratio and the choice of solvent vapors offer the unusual ability to control the width of very well-ordered linear features within a range between 6 and 31 nm. This methodology is particularly useful for nanolithography based on directed self-assembly in that a single block copolymer film can form microdomains with a broad range of geometries and sizes without the need to change molecular weig...

A planar split-ring resonator-based microwave biosensor for label-free detection of biomolecules

Abstract: In this study, a planar split-ring resonator (SRR)-based RF biosensor was developed for label-free detection of biomolecules such as the prostate cancer marker, prostate specific antigen (PSA), and cortisol stress hormone. The biosensor has a resonance-assisted transducer and is excited by a time-varying magnetic field component of a local high-impedance microstrip line. The resulting device exhibits an intrinsic S 21 resonance with a quality-factor (or Q-factor) of 50. For the biomolecular interaction, anti-PSA and anti-cortisol were immobilized on the gold surface of the resonator by a protein-G mediated bioconjugation process and corresponding frequency shifts of Δ f 1 p = 30 ± 2 MHz (for anti-PSA) and Δ f 1 c = 20 ± 3 MHz (for anti-cortisol) were observed. The additional frequency shift of each PSA and cortisol antigen with a 100 pg/ml concentration was about 5 ± 1.5 MHz and 3 ± 1 MHz, respectively. From the experimental results, we confirmed that our device is very effective RF biosensor with a limit of detection (LOD) of 100 pg/ml and has sufficiently feasibility as a label-free biosensing scheme.