Samsung Electronics Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Korea Printing Systems Co., Ltd.

Jang-Hwan Kim

Dong-Hyun Song

Shea-Yun Lee

Dong-kun Shin

Jung-Been Im

Change-Hee Lee

Myung-Jin Jung

Sang-Lyul Min

Jeong-eun Kim

Sang-Yoon Soh

Yeon-Jin Mo

Jeong-Eun Kim

Jae-Hyun Hwang

Jae-hyun Hwang

Young-ho Hwang

Oh-Hyuk Kwon

Jeong-Hyoun Sung

Jin-Gwan Kim

So-Hee Han

Yoon-Jun Lee

Young-Doo Yoon

A system for controlling fault tolerance may include a first controller connected to a driver, a first switch connected in parallel to the first controller, a first capacitor connected in parallel to the first switch, a second switch connected in parallel to the first capacitor and different from the first switch, a first power supply connected in parallel to the first capacitor and connected in series to the second switch, and a second capacitor connected to the first switch and a ground of the first power supply and different from the first capacitor. When the first controller is broken down, the second switch may be turned off to interrupt power supply from the first power supply, and the first switch may be turned on to discharge electric charges charged in the second capacitor.

System for controlling fault tolerance

A memory system including non-volatile memory devices and a corresponding refresh method are disclosed. The method groups memory blocks of the non-volatile memory devices into memory groups, determines a refresh sequence for the memory groups, and refreshes the memory groups in accordance with the refresh sequence.

Nonvolatile memory system and refresh method

A dual inverter system to drive a motor in an electronic apparatus and a method of controlling the same include a first inverter connected to one side of a stator winding of the motor to modulate a pulse width and to adjust power supplied to the motor, a second inverter connected to the other side of the stator winding of the motor to modulate a pulse width and to adjust power supplied to the motor, a first current detector connected to the first inverter to detect a current flowing in the first inverter, a second current detector connected to the second inverter to detect a current flowing in the second inverter, and a controller to control the motor by controlling a pulse-width modulation (PWM) signal applied to the first inverter or the second inverter based on the current flowing in at least one of the first inverter and the second inverter.

Dual inverter system and method of controlling the same

A memory device detects and correct bit errors. The memory device includes cyclic redundancy check (CRC) and error correction code (ECC) circuits. The CRC circuit generates a write CRC code corresponding to data to be stored in memory cells. The ECC circuit generates an ECC code corresponding to the data and detecting and correcting a bit error of the data by means of the ECC code during a read operation. The CRC circuit generates a read CRC code corresponding to data corrected by the ECC circuit during the read operation, and detects a bit error of the data according to a comparison of the read CRC code and the write CRC code.

Memory device and bit error detection method thereof

A method is for recovering a block mapping table in a system including a flash memory device, where the block mapping table utilizes address mapping in accordance with a wear-leveling scheme. The method includes reading block arrangement information from the flash memory device for the wear-leveling scheme, restoring the block mapping table with reference to allocation block information included in the block arrangement information and scanning address allocation information included in spare regions of erased blocks of the flash memory device with reference to erased block information included in the block arrangement information and updating the block mapping table in accordance with the scanned address allocation information.

System with flash memory device and data recovery method thereof

An embodiment of a data storage apparatus includes a storage medium, a flash memory buffer configured to store write data to be written in the storage medium, and a controller configured to compare the amount of unused space in the flash memory buffer to a first reference value, compare the amount of valid data in the flash memory buffer to a second reference value, and in response to the comparisons, conducts either a block reclaim operation on the flash memory buffer or a buffer flush operation to transfer valid data from the flash memory buffer to the storage medium. An embodiment of a method for managing a data storage apparatus includes determining when to perform a reclaim operation on a nonvolatile memory buffer, and performing the reclaim operation by moving data either physically or virtually within the nonvolatile memory buffer.

Data storage apparatus with block reclaim for nonvolatile buffer

Example embodiments provide a garbage collection method which includes applying a weight to each of at least two or more factors to calculate garbage collection costs. A hash table is configured using the calculated garbage collection costs. The method further includes searching a block having the lowest garbage collection cost from the hash table and performing garbage collection on the searched block.

Flash memory system and garbage collection method thereof

A storage apparatus using a non-volatile memory, which retains data even after power interruption, as its cache and a method of managing the same are provided. The storage apparatus includes a main storage medium, a non-volatile memory used as a cache of the main storage medium, a region of the non-volatile memory being divided into a fixed region and a non-fixed region according to whether or not data is fixed, and a block management unit managing physical blocks by means of virtual addresses, the physical blocks being allocated to the non-volatile memory.

Storage apparatus using non-volatile memory as cache and method of managing the same

Provided are a storage apparatus using a non-volatile memory as a cache and a method of operating the same, in which the non-volatile memory is used as the cache so as to preserve data even when electricity is interrupted. The storage apparatus using a non-volatile memory as a cache includes a main storage medium, the non-volatile memory being used as the cache of the main storage medium and having a stationary region and a non-stationary region divided according to whether data are fixed, and a block management unit managing blocks allocated in the non-volatile memory.

Storage apparatus and method for using a non-volatile cache memory organized into stationary and non-stationary circular regions

A storage apparatus using a nonvolatile memory as a cache and a mapping information recovering method for the storage apparatus are provided. The storage apparatus includes a mapping information storage module which stores in the nonvolatile memory mapping information of the nonvolatile memory and a first physical block address allocated when the mapping information is stored; a scan module which scans the first physical block address through a second physical block address allocated currently; and a mapping information recovery module which recovers the mapping information between the first physical block address and the second physical block address based on a result of the scan by the scan module.

Storage apparatus using nonvolatile memory as cache and mapping information recovering method for the storage apparatus

Disclosed is a paper holding device for a label printer. The paper holding device comprises left and right holders for supporting both ends, respectively, of a paper roll; left and right guide links respectively locked to lower ends of the left and right holders; a rotation link for operatively connecting the left and right guide links with each other and moving them in leftward and rightward directions; a bottom panel secured with respect to a floor of a printer body, for rotatably installing thereon the rotation link; and a pair of elastic members having one ends connected to the left and right guide links and the other ends connected to the bottom panel, to apply elastic force to the left and right guide links.

Paper holding device for label printer

Disclosed is a paper guide device suitable for a label printer. The paper guide device comprises left and right guide members defined, on one side surfaces thereof facing each other, with guide grooves which receive and guide both widthwise edges of paper, and formed, on respective rear and front surfaces thereof, with flat geared portions; left and right gear bands formed, on respective front and rear surfaces thereof, with rack gears which are respectively meshed with the flat geared portions of the left and right guide members; a pinion gear positioned between the left and right-gear bands and meshed with the rack gears of them; and an adjustment knob slidably installed on a printer body and connected to one end of the right gear band.

Growing community of inventors

Suwon-si, South Korea

Jang-Hwan Kim