Samsung Electronics Co., Ltd.

Hojun Shim

Je-Hyuck Song

Seung-Duk Cho

Chanik Park

Kangho Roh

Wonmoon Cheon

Wonhee Cho

Jong Tae Park

Yang-sup Lee

Youngjoon Choi

Moonwook Oh

Seontaek Kim

Jaesoo Lee

Jaehoon Heo

Kwanggu Lee

Eunchan Kim

Jaegeun Park

Byungchul Yoo

Kwanghee Choi

Sangmuk Hwang

Youngho Kwak

Seonbong Kim

Woo-Sung Cho

Mina Hwang

Youngjun Yoo

Ohsung Kwon

Kijo Jung

Boeok Seo

A storage controller includes a command manager and a direct memory access (DMA) engine. The command manager receives a first submission queue doorbell from an external device, fetches a first command including a first latency from the external device in response to the first submission queue doorbell, and determines a first timing to write a first completion into the external device based on the first latency, the first completion indicating that the first command is completely processed. The DMA engine receives a request signal requesting processing of the first command from the command manager, transfer data, which the first command requests, based on a DMA transfer in response to the request signal, and outputs a complete signal, which indicates that the first command is completely processed, to the command manager.

Storage controller managing completion timing, and operating method thereof

A storage device is provided. The storage device includes a field programmable gate array board connected to a first port of the storage device; and a storage controller including a first interface circuit and a second interface circuit. The first interface circuit is connected to the FPGA board, the second interface circuit is connected to a second port of the storage device, at least one port from among the first port and the second port being configured to connect to an external storage device, and the FPGA board is configured to provide a path for transferring data in a peer-to-peer manner between the storage controller and the external storage device without intervention of a host.

Storage device performing peer-to-peer communication with external device without intervention of host

A storage device comprises a controller and a plurality of nonvolatile memory devices. Maintenance conditions of the nonvolatile memory devices are monitored internally by the storage device. Upon determining that a maintenance condition is satisfied, the storage device notifies an external host. The controller may perform the maintenance operations on the plurality of nonvolatile memory devices with little disruption to the host and assure data is reliably maintained by the nonvolatile memory devices.

Storage device initiating maintenance operation actively without instruction of host and electronic system including the same

A method of controlling a master device includes, providing a measured service level by measuring a service level with respect to requests of a master device that is connected to a slave device through an interconnect device and generates the request to demand services from the slave device and controlling a power level of a request control circuit included in the master device based on the measured service level. Power consumption of the master device and the system including the master device is reduced without performance degradation by controlling the power level of the request control circuit adaptively based on the measured service level.

Master device, system and method of controlling the same

A method of operating a storage controller that communicates with a host including a submission queue and a completion queue is provided. The operating method includes receiving a submission queue doorbell from the host, fetching a first command including a latency from the submission queue of the host in response to the received submission queue doorbell, processing the fetched first command, and writing a first completion, which indicates that the first command is completely processed, into the completion queue of the host at a timing based on the latency.

A storage device includes a memory controller to receive a first signal from an external device through a first channel, obtain data from a memory based on the first signal, and output the data to the external device through a second channel. The data is output through the second channel in a case where a time interval between a time when the first signal is received and a time when the data are obtained is greater than a first reference interval.

Storage device including a memory controller and a method of operating an electronic system including memory

A method of controlling a link state of a communication port of a storage device according to the present inventive concepts includes setting the link state of the communication port to a link active state that can exchange data with a host, determining a holding time of a first standby state among link states of the communication port, changing the link state of the communication port to the first standby state, monitoring whether an exit event occurs during the holding time from the time when a transition to the first standby state occurs, and in response to an exit event not occurring during the holding time, changing the link state of the communication port to a second standby state. A recovery time from the first standby state to the link active state is shorter than a recovery time from the second standby state to the link active state.

Storage device and method of controlling link state thereof

Dual port storage device performing peer-to-peer communication with external device without intervention of host

A storage device includes a controller that is configured to perform two-way communication with a host. The controller generates a plurality of requests including first requests and second requests associated with the host. The controller orders the plurality of requests such that the plurality of requests include at least one first request and at least two consecutive second requests.

Storage device configured to perform two-way communication with host and operating method thereof

A data transferring method of a storage device is provided. The method may include transferring a first data to a first outbound area, transferring the first data sent to the first outbound area to a first area of a main memory corresponding to a first address programmed by an address translation unit, transferring a second data to a second outbound area in response to an indication that the address translation unit is to be reprogrammed, and transferring the second data sent to the second outbound area to the first outbound area.

Storage device and data transferring method thereof

An auxiliary power device includes an auxiliary power source having first and second charging cells connected in series, a cell balance circuit configured to sense a charging voltage between the first and second charging cells, generate a balance voltage based on the sensed charging voltage, and applies the generated balance voltage between the first and second charging cells, and a microprocessor configured to diagnose the first and second charging cells based on the sensed charging cells and control the cell balance circuit.

Auxiliary power device, memory system having the same, and cell balancing method thereof

A data storage device including a reset circuit and a method of resetting thereof includes a memory device to receive a driving voltage through a power terminal thereof, a voltage regulator to adjust an external voltage to provide the adjusted voltage to the power terminal of the memory device, and a reset circuit to discharge an enable terminal of the voltage regulator or the power terminal of the memory device according to a change of the external voltage.

Storage device including reset circuit and method of resetting thereof

A storage device which includes a user area of a memory cell array; a buffer area configured to temporarily store compressed data to be written into the user area; and compressed data management logic configured to control the user area and the buffer area such that compressed data stored in the buffer area is written into the user area. The compressed data management logic manages compressed data to be written into the user area by an ECC block unit rather than by a page-size unit.

Growing community of inventors

Yongin-si, South Korea

Hojun Shim