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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
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.
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2.发明授权公开(公告)号：US09760503B2
公开(公告)日：2017-09-12
申请号：US14822321
申请日：2015-08-10
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sang-Jin Oh , Jisoo Kim , Seung-Jae Lee , Moonsang Kwon
CPC classification number: G06F12/145 , G06F12/0246 , G06F21/44 , G06F21/575 , G06F2212/1052 , G06F2212/2022 , G06F2212/7201
Abstract: A nonvolatile memory system includes a nonvolatile memory device having a physical storage area, and a memory controller managing the physical storage area on the basis of first and second logical areas. The memory controller is configured to receive a logical block address range corresponding to a part of the first logical area and a command from a host and is configured to receive data, a logical block address and a write command from the host to perform an update with respect to the second logical area. When, in the update operation, the received logical block address is included in the logical block address range, the memory controller, in response to the write command, redirects the received logical block address to a logical page number of the second logical area so that the data is written in the second logical area.
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3.发明授权公开(公告)号：US09032138B2
公开(公告)日：2015-05-12
申请号：US13682964
申请日：2012-11-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyun Jin Choi , Sang-Jin Oh , Dawoon Jung
CPC classification number: G06F12/02 , G06F3/0608 , G06F3/0652 , G06F3/0679 , G06F12/0246 , G06F2212/7205 , G06F2212/7209
Abstract: Disclosed is a storage device which includes a flash memory storing data; and a controller controlling the flash memory and performing an invalidation operation in response to a trim command of a host, wherein the controller configures a trim sector bitmap using trim information provided from the host at the invalidation operation and manage the trim sector bitmap by a region unit.
Abstract translation: 公开了一种存储装置，其包括存储数据的闪存; 以及控制器，其控制闪存并响应于主机的修剪命令执行无效操作，其中所述控制器使用在所述无效操作中从所述主机提供的修剪信息来配置修整扇区位图，并且将所述修剪扇区位图管理为区域 单元。
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4.发明申请公开(公告)号：US20130132650A1
公开(公告)日：2013-05-23
申请号：US13682964
申请日：2012-11-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyun Jin Choi , Sang-Jin Oh , Dawoon Jung
IPC: G06F12/02
CPC classification number: G06F12/02 , G06F3/0608 , G06F3/0652 , G06F3/0679 , G06F12/0246 , G06F2212/7205 , G06F2212/7209
Abstract: Disclosed is a storage device which includes a flash memory storing data; and a controller controlling the flash memory and performing an invalidation operation in response to a trim command of a host, wherein the controller configures a trim sector bitmap using trim information provided from the host at the invalidation operation and manage the trim sector bitmap by a region unit.
Abstract translation: 公开了一种存储装置，其包括存储数据的闪存; 以及控制器，其控制闪存并响应于主机的修剪命令执行无效操作，其中所述控制器使用在所述无效操作中从所述主机提供的修剪信息来配置修整扇区位图，并且将所述修剪扇区位图管理为区域 单元。
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