Korea Institute of Science and Technology

Skhynix Inc.

Hynix Semiconductor Inc.

Hyundai Heavy Industries Co., Ltd.

Sung Hyun Jung

Hyun-Nam Cho

Sang Won Son

Sang Hun Lee

Sam Kyu Won

Seung-Eun Lee

Jong Bok Kim

Seok-Jin Park

Seok Jin Park

Sung Min Kim

Jae Hong Won

Disclosed are a surgical robot system and a surgical robot control method. The surgical robot system includes a surgical tool configured to perform surgery on each of a plurality of procedure regions in a surgical region which is divided into the plurality of procedure regions, a robot arm on which the surgical tool is mounted, and a driver configured to operate the robot arm. The present invention adjusts a speed at which a surgical robot moves, based on a risk level which is set for a procedure region, and thus enhances a stability of surgery performed by the surgical robot and moreover decreases a degree to which the surgery is delayed, thereby reducing pain and inconvenience caused to an operator and a patient.

Surgical robot system and surgical robot control method

A semiconductor memory device includes a memory cell array including a plurality of memory cells, a peripheral circuit suitable for generating program and erase voltages and applying the program and erase voltages to the plurality of memory cells when program and erase operations are performed on the plurality of memory cells, and a control logic suitable for controlling the peripheral circuit unit during the program and erase operations and counting a pulse number of the program and erase voltages to store a resultant count number as status data.

Semiconductor memory device, memory system including the same and operating method thereof

A memory system includes first to third memory devices each having an input terminal for receiving a token signal and an output terminal for transmitting the token signal, wherein the input terminal of each of the first to third memory devices are connected to the output terminal of another memory device through a ring topology, a subset of the first to third memory devices substantially simultaneously perform an operation of consuming a peak current in response to any one of a plurality of token signals, and each of the first to third memory devices possesses only any one of the plurality of token signals and transmits the other token signals to another memory device.

Token ring architecture based memory system and operating method to optimize current consumption

Disclosed are compounds represented by formula (), wherein m, X, R, R, R, R', R&#x2032;, R&#x2032;, and Ar are described herein. The inventive cyclopentadienone compounds can be used as core materials for an organic electroluminescence element or other optical devices. The invention also describes methods for preparing compounds of formula ().

Compound derived from cyclopentadienone, preparation method thereof and EL element using the same

A nonvolatile memory device comprises a page buffer unit, first to klogic combination units, and a control unit. The page buffer unit includes first to Npage buffer blocks. N and k are natural numbers. Each of the first to Npage buffer blocks comprises m page buffers, divided into first to kpage buffer groups, and first to kpass/fail check units configured to output respective verification signals, each indicative of a program pass or a program fail, according to data stored in latches of the page buffers included in each of the page buffer groups. The first to klogic combination units are each configured to output respective first to kpass/fail determination signals.

Nonvolatile memory device and method of operating the same

The present invention relates to fluorene compounds and polymers thereof, having various structures and functional groups, and capable of being used as a luminescent material for organic and polymer-based electro-luminescence (EL) element and other optical element, and to an EL element using the same as a luminescent material.

Fluorene compounds containing various functional groups, polymers thereof and EL element using the same

Disclosed are a polyarylene compound and polymers thereof, which can be used as core materials for an organic or polymeric electro-luminescence (EL) element or for other optical devices, a preparation method thereof, and an EL element using the same.

Polyarylene compounds, polymers thereof, and electroluminescence element using the same

A fluorene compound and polymers thereof having a polyphenylene group, and EL element comprising the same, which can be prepared through a Diels-Alder reaction of a compound having one or more cyclopentadienone group and a compound having one or more acetylene group and can be used as a core material for organic and polymeric EL element and/or other optical devices.

Fluorene compound, polymers thereof having a polyphenylene group, and EL element comprising the same

A pyrrole compound, polymers thereof and EL element using the same are disclosed. The pyrrole compound and polymers thereof can be used as a material for an organic and polymeric electroluminescence element and/or other optical devices such as an optical switch, sensor, module, waveguide, transistor, laser, light-absorbing body, dielectric substance, membrane and the like.

Growing community of inventors

Seoul, South Korea

Sung Hyun Jung