公开(公告)号：US11048662B2

公开(公告)日：2021-06-29

申请号：US15610810

申请日：2017-06-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung Ho Kim ,  Seungyeun Jeong ,  Dae-Jin Kim ,  Sang-Jin Oh ,  Hwasoo Lee ,  Hyejeong Jang

IPC: G06F16/16 ,  G06F16/18

Abstract: A trim management method for a storage device includes activating, by a processor configured by an application program, a pattern check function of a device driver, requesting, by the processor configured by the application program, a file system to write a file of a specified pattern, converting, by the processor configured by the file system, the file to management unit data of the storage device, transmitting, by the processor configured by the file system, the management unit data to the device driver, checking, by the processor configured by the device driver, whether a data pattern of the management unit data is the same as the specified pattern, and transmitting, by the processor configured by the device driver, a trim command for trimming a storage area corresponding to the management unit data, to the storage device based on results of the checking.

公开(公告)号：US11011233B2

公开(公告)日：2021-05-18

申请号：US16442670

申请日：2019-06-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae-Jin Kim ,  Sang-Ryong Park ,  Jong-Nam Baek ,  Sejeong Jang

IPC: G11C16/04 ,  G11C16/08 ,  G06F3/06 ,  G06F12/02 ,  G11C16/16 ,  G11C16/34

Abstract: A nonvolatile memory device includes a memory cell array that includes memory blocks, wherein each of the memory blocks includes pages each including memory cells, a row decoder circuit that selects one of the pages from a selected memory block of the memory blocks in a write operation and selects memory cells of a close unit from the selected memory block in a close operation, and a page buffer circuit that writes data into memory cells of a page selected by the row decoder circuit in the write operation and writes dummy data into the memory cells of the close unit selected by the row decoder circuit in the close operation. The close unit includes one or more pages, and, in the close operation, the row decoder circuit adjusts a size of the close unit.

公开(公告)号：US09974019B2

公开(公告)日：2018-05-15

申请号：US14219577

申请日：2014-03-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Min-June Kim ,  Young-Ae Kang ,  Dae-Jin Kim ,  Jong-Man Park

IPC: H04W52/02 ,  H04W64/00 ,  H04W4/02 ,  G01S19/48 ,  G01S5/02 ,  G01S19/34

CPC classification number: H04W52/0225 ,  G01S5/0252 ,  G01S5/0263 ,  G01S19/34 ,  G01S19/48 ,  H04W4/021 ,  H04W4/025 ,  H04W64/00 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164

Abstract: A method used by an electronic device receiving a geo-fence service, determines whether a current position of the electronic device, determined using a cellular positioning system (CPS), is located within a first distance from a central point of a geo-fence service area. In response to determining that the current position is located within the first distance, the current position is determined using a Wi-Fi positioning system (WPS) and it is further determined whether the WPS determined current position is located within a second distance from the central point of the geo-fence service area. In response to the determination the current position is located within the second distance, it is determined whether the current position calculated using a global positioning system (GPS), is located within a boundary of a geo-fence service area.