Samsung Electronics Co., Ltd.

S-printing Solution Co., Ltd.

Hewlett-packard Development Company, L.p.

Other

Korean Advanced Institution of Science & Technology

Hp Printing Korea Co., Ltd.

Hyun-Wook Wook Park

Kitae Park

Yung-Lyul Lee

Jin-hyung Kim

Yung-Iyul Lee

Sung-joon Park

Jaeyong Jeong

Bong-Soon Lim

Seong-Jin Song

Do-Bin Kim

Minsu Kim

Bongsoon Lim

Donghun Kwak

Sung-Joon Park

Dongkyo Shim

Changyeon Yu

Kang-yub Kim

Sang-Wan Nam

Ki-Tae Park

Doohyun Kim

Dong-Hun Kwak

Hyun Jun Yoon

Jung-Soo Kim

Naveen Maheshwari

Byoung-yue Kim

Jun-Hee Lee

Jae-in Lee

Youngsun Song

Seung-Hwan Shin

Mok-hwa Lim

Mok-Hwa Lim

Eun-young Jung

DongHun Kwak

SungJoon Park

Ji-yoon Park

Byeong-tak Jo

Jae-In Lee

Deok-Hee Boo

Jae-Kyun Rhee

Kang-Yub Kim

Eun-Young Jung

Byoung-Yue Kim

Jin-Hyung Kim

A nonvolatile memory device includes a memory cell region and a peripheral circuit region. The memory cell region includes a memory block, and the peripheral circuit region includes a control circuit. The memory cell region includes a first metal pad. The peripheral circuit region includes a second metal pad and is vertically connected to the memory cell region by the first metal pad and the second metal pad. The memory block includes a plurality of memory cells disposed in a vertical direction. The control circuit determines whether a data erase characteristic for the memory block is degraded for each predetermined cycle of data erase operation, and performs a data erase operation by changing a level of a voltage applied to selection transistors for selecting the memory block as an erase target block when it is determined that the data erase characteristic is degraded.

Nonvolatile memory device with capability of determining degradation of data erase characteristics

Nonvolatile memory device with capability of determing degradation of data erase characteristics

A memory device includes a cell array and a page buffer circuit. The cell array includes a first to fourth cell strings respectively connected to a first to fourth bit lines. The page buffer circuit is configured to apply an erase voltage to the first and third bit lines based on a first control signal during an erase operation for memory cells of the first to fourth cell strings. The page buffer circuit is configured to place the second and fourth bit lines in a floating state based on a second control signal during the erase operation.

Memory device and operating method thereof

A wireless connection establishment method of an image forming apparatus using a mobile terminal is provided. The wireless connection establishment method includes, while the image forming apparatus is operating in a wireless fidelity (Wi-Fi) Direct mode, receiving a request to switch to a wireless setup mode, terminating the Wi-Fi Direct mode and connecting to a mobile terminal by entering the wireless setup mode, receiving access point (AP) connection information from the mobile terminal, establishing a connection to an AP by using the received AP connection information, and starting the Wi-Fi Direct mode.

Method for establishing wireless connection of image forming device by using mobile terminal, and image forming device for performing same

In a method of erasing data in a nonvolatile memory device including a memory block, it is determined whether a data erase characteristic for the memory block is degraded for each predetermined cycle. The memory block has a plurality of memory cells therein, the plurality of memory cells being stacked in a vertical direction relative to an underlying substrate. A data erase operation is performed by changing a level of a voltage applied to selection transistors for selecting the memory block as an erase target block when it is determined that the data erase characteristic is degraded.

Method of erasing data in nonvolatile memory device by changing level of voltage and duration of time to apply the voltage for target erase block

A host device for performing network diagnostics on an image forming apparatus is provided. The host device includes a communicator to receive, from the image forming apparatus, diagnostic raw data used for the network diagnostics on the image forming apparatus and receive, from a policy-providing server outside the image forming apparatus, a diagnostic policy that is a criterion of the network diagnostics, a memory storing a computer-executable instruction, at least one processor to execute the computer-executable instruction to generate a network diagnostics result of the image forming apparatus based on the diagnostic raw data and the diagnostic policy, and an input/output unit to output the network diagnostics result. The network diagnostics is performed on the image forming apparatus without upgrading the image forming apparatus, despite a change in the diagnostic policy for the network diagnostics.

Host device and method for performing network diagnosis on image forming device, image forming device on which network diagnosis is performed, and method for controlling same

A memory device includes a cell array and a page buffer circuit. The cell array includes first and second cell strings respectively connected to first and second bit lines. The page buffer circuit is configured to apply an erase voltage to the first bit line and to allow the second bit line to be in a floating state, when an erase operation is performed on memory cells of the first and second cell strings.

An image forming apparatus is provided. The image forming apparatus includes an input/output unit, a communicator to communicate with a wireless device, a memory storing a program for transmitting state information of the image forming apparatus, a controller to, by executing the program for transmitting the state information of the image forming apparatus, control the image forming apparatus to receive, from the wireless device, a probe request packet for searching for a peripheral device, generate a probe response packet comprising the state information of the image forming apparatus in response to the probe request packet, and transmit the probe response packet to the wireless device, and an image forming job performer to perform an image forming job under control of the controller.

Image forming device and method for transmitting state information of image forming device

A nonvolatile memory device includes control logic and a memory cell array. The memory cell array includes a first plane and a second plane. The control logic is configured to perform a first sub-operation on the first plane, to perform a second sub-operation on the second plane, to delay the second sub-operation as much as a reference time so that a partial section of the first sub-operation does not overlap the second sub-operation, and to variably control the reference time.

Nonvolatile memory device and memory system including the same

An method of operating a memory system including a plurality of memory cells includes changing an operation mode at least some of the memory cells which operate based on a first operation mode to operate based on a second operation mode; and performing a change erase operation on the memory cells for which an operation mode is changed on the basis of a change erase condition when the operation mode is changed. When memory cells operate in the first operation mode, a normal erase operation is performed based on a first erase condition, and when memory cells operate in the second operation mode, a normal erase operation is performed based on a second erase condition. The change erase condition is different from at least one of the first and second erase conditions.

Nonvolatile memory system that erases memory cells when changing their mode of operation

Provided is an operating method of an image forming apparatus, the operating method including broadcasting a plurality of packets comprising identification information of the image forming apparatus; receiving a connection request comprising the identification information of the image forming apparatus from a mobile terminal which received some packets from among the plurality of broadcasted packets; and connecting to the mobile terminal, based on the connection request, wherein the connection request is transmitted from the mobile terminal when received signal strengths of the some packets received by the mobile terminal are equal to or greater than a first threshold value. In this regard, the first threshold value may indicate a received signal strength greater than a minimum received signal strength at which communication with the mobile terminal is available.

Image forming device supporting short range wireless communication and method for operating same, mobile terminal supporting short range wireless communication and method for operating same, and cloud print system using short range wireless communication

An image forming apparatus and a method of recovering errors of the image forming apparatus connectable to a server for supporting a service for error recovery of the image forming apparatus are provided. The method includes connecting, when connection with the server through a first network is restricted, to a mobile apparatus through a second network different from the first network, transmitting state information required for error recovery of the image forming apparatus to the connected mobile apparatus through the second network, receiving a control command required for error recovery of the image forming apparatus from the mobile apparatus through the second network, in response to the transmitted state information, and recovering errors of the image forming apparatus according to the received control command.

Image forming apparatus and method of recovering error thereof

An image forming apparatus supporting peer to peer (P2P) connection includes a print engine to perform a print operation; a first wireless interface to connect the image forming apparatus to an access point (AP) of an infrastructured network; a second wireless interface to connect the image forming apparatus to an external mobile device by P2P; a soft AP module to allow the image forming apparatus to perform as an AP when the image forming apparatus is P2P connected; a dynamic host configuration protocol (DHCP) server unit to allocate an internet protocol (IP) address to the mobile device that is P2P connected to the image forming apparatus; a soft AP activating unit to activate the soft AP module; and a control unit. If a discovery packet is received from the mobile device via P2P interface, the control unit is operable to control the image forming apparatus to process the discovery packet.

Image forming apparatus supporting Wi-Fi direct and method of activating Wi-Fi direct

A method of performing an image forming operation in an image forming apparatus supporting peer to peer (P2P) connection includes P2P connecting the image forming apparatus to an external wireless device while the image forming apparatus is wirelessly connected to an access point (AP) of an infrastructured network, receiving a discovery packet from the wireless device via a P2P interface, transmitting to the wireless device a response packet including an Internet protocol (IP) address of the P2P interface, receiving from the wireless device an image forming operation performing request having the IP address of the P2P interface as a destination, and performing the requested image forming operation.

Image forming apparatus supporting peer to peer connection and method of performing image forming operation thereof

A programming method of a nonvolatile memory device including; programming data in memory cells connected to a word line by performing a coarse program operation; and programming the data in the memory cells by performing a fine program operation, wherein the number of program states in the coarse program operation is changed according to a program/erase (P/E) cycle number.

Storage device and a write method including a coarse program operation and fine program operation

Growing community of inventors

Seoul, South Korea

Hyun-Wook Wook Park