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.

Semiconductor package and method of manufacturing the same

Abstract: A light-emitting device package including a lead frame formed of a metal and on which a light-emitting device chip is mounted; and a mold frame coupled to the lead frame by injection molding. The lead frame includes: a mounting portion on which the light-emitting device chip is mounted; and first and second connection portions that are disposed on two sides of the mounting portion in a first direction and connected to the light-emitting device chip by wire bonding, wherein the first connection portion is stepped with respect to the mounting portion, and a stepped amount is less than a material thickness of the lead frame.

SmartAuth: User-Centered Authorization for the Internet of Things

Abstract: Internet of Things (IoT) platforms often require users to grant permissions to third-party apps, such as the ability to control a lock. Unfortunately, because few users act based upon, or even comprehend, permission screens, malicious or careless apps can become overprivileged by requesting unneeded permissions. To meet the IoT’s unique security demands, such as cross-device, context-based, and automatic operations, we present a new design that supports user-centric, semantic-based “smart” authorization. Our technique, called SmartAuth, automatically collects security-relevant information from an IoT app’s description, code and annotations, and generates an authorization user interface to bridge the gap between the functionalities explained to the user and the operations the app actually performs. Through the interface, security policies can be generated and enforced by enhancing existing platforms. To address the unique challenges in IoT app authorization, where states of multiple devices are used to determine the operations that can happen on other devices, we devise new technologies that link a device’s context (e.g., a humidity sensor in a bath room) to an activity’s semantics (e.g., taking a bath) using natural language processing and program analysis. We evaluate SmartAuth through user studies, finding participants who use SmartAuth are significantly more likely to avoid overprivileged apps.

A High Performance Controller for NAND Flash-based Solid State Disk (NSSD)

Abstract: NAND flash memory based solid-state disk (NSSD) has been used for industrial and military use due to its high reliability and shock resistance. With the bit cost reduction of flash memory and the explosive growth of flash market, NSSD is expected to penetrate into diverse applications such as mobile thin clients, car navigation systems and movie players, which prefer low power consumption, high reliability, high performance and so on. This paper mainly focuses on the development of a high performance and cost-efficient controller for NSSD, with the aim of describing both hardware and software architectures. In order to demonstrate the usefulness of the proposed approach, we show performance, power consumption and start-up time evaluation results over magnetic disks using third party benchmark tools

Impact of stoichiometry on the electronic structure of PbS quantum dots.

Abstract: Although the stoichiometry of bulk lead sulfide (PbS) is exactly 1:1, that of quantum dots (QDs) can be considerably different from this crystalline limit. Employing first-principles calculations, we show that the impact of PbS QD stoichiometry on the electronic structure can be enormous, suggesting that control over the overall stoichiometry in the QD will play a critical role for improving the efficiency of optoelectronic devices made with PbS QDs. In particular, for bare PbS QDs, we find that: (i) stoichiometric PbS QDs are free from midgap states even without ligand passivation and independent of shape, (ii) off stoichiometry in PbS QDs introduces new states in the gap that are highly localized on certain surface atoms, and (iii) further deviations in stoichiometry lead to QDs with "metallic" behavior, with a dense number of energy states near the Fermi level. We further demonstrate that this framework holds for the case of passivated QDs by considering the attachment of ligand molecules as stoichiometry variations. Our calculations show that an optimal number of ligands makes the QD stoichiometric and heals unfavorable electronic structure, whereas too few or too many ligands cause effective off stoichiometry, resulting in QDs with defect states in the gap.

Method and apparatus for wireless charging an electronic device

Abstract: A wireless charging method for an electronic device using an electromagnetic radiation (EMR) circuit is provided. The wireless charging method includes receiving an event input through the EMR circuit, controlling an input function according to a signal received through the EMR circuit in response to an input event, and controlling a wireless charging of a target device or electronic device using energy generated through the EMR circuit in response to a charge event.