Lg Electronics Inc.

Skhynix Inc.

Yonsei University

Sogang University Research Business Development Foundation

Seungjin Lee

Sangik Lee

Hwang Kim

Seaunglok Ham

Hojung Lee

Dongguk Kang

Keetae Kim

KiTae Kim

Eui-Young Chung

Sangjo Kim

Hongil Yoon

Jeongbin Kim

Kyungseon Cho

Daehyung Cho

Jongho Park

Youngjae Kim

Hyunsup Song

Hyeongshin Jeon

Jaeheon Chung

Changgyu Lee

Woo Suk Chung

Inhyuk Park

The present invention relates to a robot cleaner and, more particularly, to a robot cleaner comprising: a main body forming the outer appearance; a suction unit provided in the main body; a dust collecting unit which is provided in the main body and collects dust introduced through the suction unit; a driving motor which provides rotating power to move the main body, and includes a driving shaft and a driving gear coupled to one end portion of the driving shaft; a driving wheel rotating according to driving of the driving motor; a deceleration gear unit which connects the driving motor to the driving wheel and transmits the rotating power generated by the driving motor to the driving wheel; a first housing which is coupled to the driving motor and covers at least a part of the driving wheel; and a second housing which is provided between the driving wheel and the first housing to be respectively coupled to the driving wheel and the first housing, and has a wheel accommodation unit provided at one side thereof for accommodating the driving wheel, and a gear accommodation unit provided at the other side for accommodating the deceleration gear unit. The first housing may be fixed by being coupled to the driving motor, and the second housing and the driving wheel coupled to the second housing may be provided to pivotably rotate together by using, as a rotary shaft, a gear shaft of a deceleration gear included in the deceleration gear unit.

Robot cleaner

Disclosed is a robot cleaner including a main body for forming an exterior of the robot cleaner, each wheel cover detachably disposed in the main body, each driving module movably coupled to each wheel cover, and each wheel coupled to each driving module and rotated by receiving a driving force from each driving module, wherein each wheel includes a wheel body coupled to each driving module and forming an appearance of each wheel, a plurality of treads arranged to be spaced apart from each other along a circumferential face of the wheel body, and a plurality of ribs respectively disposed between the treads and protruding radially outward of each wheel.

A key-value (KV) based data storage device configured to process one or more range query commands includes a first table, summary data, a Log-Structured merge (LSM) tree area storing a plurality of second tables forming an LSM tree structure, and a value log area storing a value corresponding to a key stored in the LSM tree structure. The summary data includes version data including a global version representing current states of the first table and the plurality of second tables. The KV based storage device adds a copy version of the global version in the version data when initiating processing of a range query command and refers to that copy version while processing that range query command.

Key-value based data storage device and operation method thereof

The present disclosure relates to a robot cleaner, more particularly, to a robot cleaner that may be escaped from a trapped state by an escaping unit formed in an inner surface of a wheel, when a body of the robot cleaner is caught in a protrusion to put the robot cleaner in a trapped state where the robot cleaner cannot run during the running on the floor of a cleaning area.

A cleaner capable of adjusting tension of a belt to connect or disconnect power between a motor and a wheel in the cleaner including the belt transmitting a driving force of the motor to the wheel is provided. A cleaner according to the present disclosure includes a cleaner body, a wheel which movably supports the cleaner body with respect to a floor, a traveling drive motor which is disposed in the cleaner body, a first pulley which is rotated by a driving force of the traveling drive motor, a second pulley which is rotated when the first pulley rotates and rotates the wheel, a belt which connects the first pulley and the second pulley, and a clutch which adjusts tension of the belt to connect or disconnect power between the first pulley and the second pulley.

Cleaner with clutch for motor engagement

Provided is a robot cleaner including a main body including a suction portion disposed thereon, main wheels for moving the main body, a side brush assembly disposed on the main body and rotating with a rotation shaft perpendicular to a rotation shaft of the main wheels, wherein the side brush assembly includes a housing for forming an exterior of the side brush assembly, a first force transmitter disposed in the housing and rotating by receiving a driving force, a second force transmitter in contact with the first force transmitter to rotate together when the first force transmitter is rotated, and a side brush coupled to the second force transmitter to rotate at the same rotation angle as the second force transmitter.

A robot cleaner includes a main body, and a wheel unit including a wheel configured to movably support the main body. The wheel unit is installed in a suspension unit and configured to be movable upward or downward. The suspension unit is configured to absorb impact when the wheel unit moves upward or downward, and is installed in a lifting unit coupled to the main body. The suspension unit is configured to be raised or lowered relative to the lifting unit. The lifting unit includes a lifting drive motor including a rotatable shaft disposed in parallel with a direction in which the suspension unit is configured to be raised or lowered, and a transmission unit configured to transmit a rotation force of the lifting drive motor to the suspension unit.

A cleaner may include a main body configured to be ascendable and descendable with respect to a suspension assembly provided to absorb shocks applied to a wheel assembly, thereby enabling the suspension assembly to continuously absorb shocks even when the height of the main body is adjusted. The cleaner may further include a charging terminal configured to connect to an external docking device to charge the cleaner and provided on a bottom surface of the main body, a drive assembly including a wheel assembly to drive the main body, a height adjuster coupled to the main body to ascend or descend together with the main body and mounted to the drive assembly so as to be ascendable and descendable, and a controller to ascend the height adjuster and raise the main body when the main body is set to be docked with the docking device.

Cleaner

A cleaner includes a cleaner body; a dust container which is accommodated in the cleaner body; a sensing module which detects information around the cleaner body and is mounted in the cleaner body rotatably about a rotating shaft that intersects a horizontal direction; and a driving module which rotates the sensing module in place relatively to the cleaner body.

A cleaner may include a cleaner main body or a main body; a dust container which is accommodated in the cleaner main body; a dust container cover or a cover which covers an upper portion of the dust container; a handle which is coupled to an upper end of the dust container cover; a sensing unit or module which detects information around the cleaner main body; and a rotation module or assembly which rotates the sensing unit relatively with respect to the dust container cover.

A method for designing an FPGA may include determining blocks required for each of a plurality of applications; determining a size of the FPGA accommodating the determined blocks for each of the plurality of applications; and laying out the determined blocks for each of the plurality of applications in a block array of the FPGA.

Method for designing an FPGA

The present disclosure discloses a robot cleaner, including a cleaner body; and a sensing unit disposed in the cleaner body, wherein the sensing unit includes a rotating body configured to be horizontally rotatable around a rotation shaft passing through an inside of the cleaner body; a sensing unit mounted on one side of the rotating body to sense a feature or an obstacle in the vicinity of the cleaner body; and a tilting unit installed inside the rotating body to vertically tilt the sensing unit.

A Look Up Table (LUT) includes a data storage circuit including a plurality of nonvolatile memory elements respectively corresponding to a plurality of applications, the data storage circuit being configured to select one of the plurality of nonvolatile memory elements according to an application selection signal; an amplification circuit configured to amplify a signal output from the selected nonvolatile memory element according to an enable signal output from a decoder; and a write control circuit configured to program the selected nonvolatile memory element with information corresponding to a data signal according to a write signal.

Look up table including a nonvolatile memory element, FPGA including the look up table, and method for designing the FPGA

A portable keyboard is disclosed, by which portability can be enhanced with a simple configuration. The present invention includes a plurality of key assemblies, a body part and a flexible connecting member. When the portable keyboard is carried, a plurality of the key assemblies are rolled up around an outer circumference of the body part in a manner that the flexible connecting member between a plurality of the key assemblies is folded. When the portable keyboard is used, a plurality of the key assemblies are unfolded by being rolled down centering on the body part in a manner that the flexible connecting member between a plurality of the key assemblies is unfolded.

Growing community of inventors

Seoul, South Korea

Seungjin Lee