CN107943713A - A kind of method and solid state hard disc for lifting solid state hard disc reading performance - Google Patents
A kind of method and solid state hard disc for lifting solid state hard disc reading performance Download PDFInfo
- Publication number
- CN107943713A CN107943713A CN201711172377.5A CN201711172377A CN107943713A CN 107943713 A CN107943713 A CN 107943713A CN 201711172377 A CN201711172377 A CN 201711172377A CN 107943713 A CN107943713 A CN 107943713A
- Authority
- CN
- China
- Prior art keywords
- slc
- data
- mlc
- state hard
- cachings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
- G06F12/0804—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches with main memory updating
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
- G06F12/0866—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches for peripheral storage systems, e.g. disk cache
- G06F12/0871—Allocation or management of cache space
Abstract
The invention discloses a kind of method and solid state hard disc for lifting solid state hard disc reading performance, it is characterized in that it is SLC types that the FLASH of MLC types, which is forced to convert a part of memory space, the memory space for being converted into SLC types is cached as the SLC of FLASH, host data first writes SLC cachings, solid-state hard disk controller backstage is during idle time by the Refresh Data of SLC cachings into MLC spaces, one cache map table of solid-state hard disk controller background maintenance is used to record the data mapping information that current SLC is cached with, the data stored in the corresponding MLC spaces of data that the Refresh Data of SLC cachings needs to write new data or SLC cachings to the data for retaining SLC cachings during MLC spaces until SLC is cached change.Data in SLC cache are not wiped immediately after the completion of data-moving, and after the completion of SLC cache are moved, read operation can accurately find the data for depositing in SLC cache.Increase data are stored in the resting period in SLC cache, and the probability of hit SLC cache is read in increase, improves the response speed of read command.
Description
Technical field
The present invention relates to solid state hard disc control technology, more particularly to a kind of method and solid-state for lifting solid state hard disc reading performance
Hard disk.
Background technology
Solid storage device with slc cache be exactly in the solid state hard disc of mlc/tlc types in order to lift writing rate,
Part mlc/tlc is marked off into partial-partition and is converted to slc, as data buffer storage, due to slc compared to mlc/tlc with more
Excellent write performance, essence are exactly to pass through space for time.In the solid storage device of existing band slc cache, slc cache
Size it is related with the quantity of slc block；It can cause block capacity since mlc/tlc block are switched to slc block
Reduce, increase the quantity of slc block by switching more mlc/tlc block, the reduction of physical capacity, institute can be caused
With in general band slc cache solid state hard discs, the negligible amounts of slc block and it is opposite be it is fixed, can not maximum limit
The characteristic using slc of degree.
In the MLC NAND flash of part, read-write is lifted using the mode that part MLC BLOCK are switched to SLC
Can, when SSD is in the free time, it can then wipe the slc by the block of the data-moving in SLC cache to mlc
The data in block regions, cause the reading acceleration function of the partial data to be lost.
The content of the invention
For disadvantages described above, the present invention seeks to lift the utilization rate of SLC cache, realize that the speed of data is read in lifting.
A kind of method for lifting solid state hard disc reading performance is proposed in order to solve the problem above present invention, it is characterised in that will
It is SLC types that the FLASH of MLC types, which forces to convert a part of memory space, is converted into the memory space conduct of SLC types
The SLC cachings of FLASH, host data first write SLC cachings, the number that solid-state hard disk controller backstage during idle time caches SLC
According to flushing in MLC spaces, one cache map table of solid-state hard disk controller background maintenance is used to record current SLC cachings
The data mapping information being cached with, the data of the Refresh Data that SLC is cached to reservation SLC cachings during MLC spaces are until SLC cachings
The data for needing to store in the corresponding MLC spaces of data of write-in new data or SLC cachings change.
The method of the lifting solid state hard disc reading performance, it is characterised in that solid-state hard disk controller receives the reading of host
Order is first retrieved in DRAM/SRAM with the presence or absence of data cached, and if so, reading data from DRAM/SRAM；If no
In the presence of then retrieval cache map table judge whether it is data cached, and if so, directly from SLC caching in read institute
Data are needed, the data if there is no needed for the conventional mapping table of then retrieval is read from MLC spaces.
The method of the lifting solid state hard disc reading performance, it is characterised in that when host operates solid state hard disc
When, before repairing corrects normal mapping table, if the data of write-in are stored in SLC buffer zones, cache map table is updated, if depositing
MLC regions are placed on, then the map information in cache map table are arranged to invalid, if the data in SLC cachings are deleted,
Corresponding cache map table is just arranged to invalid.
A kind of solid state hard disc, it is characterised in that it is SLC classes to force to convert a part of memory space by the FLASH of MLC types
Type, the memory space for being converted into SLC types are cached as the SLC of FLASH, and host data first writes SLC cachings, solid state hard disc
Controller backstage is during idle time by the Refresh Data of SLC cachings into MLC spaces, one height of solid-state hard disk controller background maintenance
Speed caching mapping table is used to record the data mapping information that current SLC is cached with, and the Refresh Data of SLC cachings is empty to MLC
Between when retain SLC caching data until SLC caching need write new data or SLC caching the corresponding MLC spaces of data in
The data of storage change.
The method of the lifting solid state hard disc reading performance, it is characterised in that solid-state hard disk controller receives the reading of host
Order is first retrieved in DRAM/SRAM with the presence or absence of data cached, and if so, reading data from DRAM/SRAM；If no
In the presence of then retrieval cache map table judge whether it is data cached, and if so, directly from SLC caching in read institute
Data are needed, the data if there is no needed for the conventional mapping table of then retrieval is read from MLC spaces.
The method of the lifting solid state hard disc reading performance, it is characterised in that when host operates solid state hard disc
When, before repairing corrects normal mapping table, if the data of write-in are stored in SLC buffer zones, cache map table is updated, if depositing
MLC regions are placed on, then the map information in cache map table are arranged to invalid, if the data in SLC cachings are deleted,
Corresponding cache map table is then arranged to invalid.
The beneficial effects of the invention are as follows：By making special management to SLC cache data, do not stood after the completion of data-moving
Wipe, the independent mapping mode of SLC cache, for ensureing, after the completion of SLC cache are moved, read operation can accurately be found
Deposit in the data of SLC cache.Increase data are stored in the resting period in SLC cache, and hit SLC cache are read in increase
Probability.Therefore the response speed of read command can be improved on the whole.
Brief description of the drawings
Fig. 1 is that there are host read operation schematic diagram during data in SLC cache；
Fig. 2 is that there are data-moving to MLC regions aft engine read operation schematic diagram in SLC cache；
Fig. 3 is using the host read operation schematic diagram after being wiped again before writing；
Fig. 4 is the renewal flow chart of cache map table.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 be in SLC cache there are host read operation schematic diagram during data, under normal circumstances, SLC cache and
MLC regions there is data, when host reads data, inquire the data by mapping table and deposit position and immediately to SLC
Cache regions or MLC regions are read out, and after Host Idle, the data in SLC cache can be shifted to MLC regions,
The data in SLC cache regions can be wiped free of after the completion of moving.
Fig. 2 is the host pair at this time there are data-moving to MLC regions aft engine read operation schematic diagram in SLC cache
During NAND digital independents, since all data deposit in MLC regions, cause mapping finally all referring to MLC regions, Wu Fatong
SLC cache are crossed to lift reading performance.
The present invention proposes SLC cache regions using wiping mode before writing again in view of the above problems, Fig. 3 be using before writing again
Host read operation schematic diagram after wiping, data are moved to after MLC regions from SLC cache, do not wipe SLC area at once
Data, while used a cache map table to record the map information of data in current SLC area, when host into
When row is read, judge that the data whether there is in SLC cache by retrieving cache map table first, if it is present
The data of SLC cache are directly read, MLC area datas are otherwise read by normal mapping table.Can have by this method
The probability for improving host and reading hit cache of effect, so as to improve reading performance.
Fig. 4 is the renewal flow chart of cache map table.Cache map table is consistent with mapping table structure, simply more
New strategy is different, and need not be written to NAND, the more new technological process of map information is shown in Fig. 4, when host is to solid state hard disc
When being operated, before repairing corrects normal mapping table, if the data of write-in are stored in SLC buffer zones, cache is updated
Mapping table, if being stored in MLC regions, is arranged to invalid by the map information in cache map table, if in SLC cachings
Data are deleted, and corresponding cache map table just are arranged to invalid, the data in SLC cache are abandoned, it is believed that unavailable.
The above disclosed interest field for being only an embodiment of the present invention, sheet cannot being limited with this certainly,
One of ordinary skill in the art will appreciate that realize all or part of flow of above-described embodiment, and according to the claims in the present invention institute
The equivalent variations of work, still fall within the scope that the present invention is covered.
Claims (6)
- A kind of 1. method for lifting solid state hard disc reading performance, it is characterised in that force a conversion part to be deposited the FLASH of MLC types Storage space is SLC types, and the memory space for being converted into SLC types is cached as the SLC of FLASH, and host data first writes SLC Caching, solid-state hard disk controller backstage is during idle time by the Refresh Data of SLC cachings into MLC spaces, solid-state hard disk controller One cache map table of background maintenance is used to record the data mapping information that current SLC is cached with, the number of SLC cachings The data pair for needing write-in new data or SLC to cache until SLC cachings according to the data for retaining SLC cachings when flushing to MLC spaces The data stored in the MLC spaces answered change.
- 2. the method for lifting solid state hard disc reading performance according to claim 1, it is characterised in that solid-state hard disk controller connects The read command for receiving host is first retrieved in DRAM/SRAM with the presence or absence of data cached, and if so, being read from DRAM/SRAM Data；If there is no then retrieval cache map table judge whether it is data cached, and if so, directly delaying from SLC Data needed for reading are deposited, the data if there is no needed for the conventional mapping table of then retrieval is read from MLC spaces.
- 3. the method for lifting solid state hard disc reading performance according to claim 1 or 2, it is characterised in that when host is hard to solid-state When disk is operated, before repairing corrects normal mapping table, if the data of write-in are stored in SLC buffer zones, renewal is slow at a high speed Mapping table is deposited, if being stored in MLC regions, the map information in cache map table is arranged to invalid, if in SLC cachings Data be deleted, then corresponding cache map table is arranged to invalid.
- A kind of 4. solid state hard disc, it is characterised in that it is SLC types to force to convert a part of memory space by the FLASH of MLC types, The memory space for being converted into SLC types is cached as the SLC of FLASH, and host data first writes SLC cachings, solid state hard disc control Device backstage processed is during idle time by the Refresh Data of SLC cachings into MLC spaces, one high speed of solid-state hard disk controller background maintenance Caching mapping table is used to record the data mapping information that current SLC is cached with, the Refresh Data that SLC is cached to MLC spaces When retain SLC caching data until SLC caching need write new data or SLC caching the corresponding MLC spaces of data in deposit The data of storage change.
- 5. the method for lifting solid state hard disc reading performance according to claim 4, it is characterised in that solid-state hard disk controller connects The read command for receiving host is first retrieved in DRAM/SRAM with the presence or absence of data cached, and if so, being read from DRAM/SRAM Data；If there is no then retrieval cache map table judge whether it is data cached, and if so, directly delaying from SLC Data needed for reading are deposited, the data if there is no needed for the conventional mapping table of then retrieval is read from MLC spaces.
- 6. the method for lifting solid state hard disc reading performance according to claim 4 or 5, it is characterised in that when host is hard to solid-state When disk is operated, before repairing corrects normal mapping table, if the data of write-in are stored in SLC buffer zones, renewal is slow at a high speed Mapping table is deposited, if being stored in MLC regions, the map information in cache map table is arranged to invalid, if in SLC cachings Data be deleted, corresponding cache map table is just arranged to invalid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172377.5A CN107943713A (en) | 2017-11-22 | 2017-11-22 | A kind of method and solid state hard disc for lifting solid state hard disc reading performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172377.5A CN107943713A (en) | 2017-11-22 | 2017-11-22 | A kind of method and solid state hard disc for lifting solid state hard disc reading performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107943713A true CN107943713A (en) | 2018-04-20 |
Family
ID=61929797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711172377.5A Pending CN107943713A (en) | 2017-11-22 | 2017-11-22 | A kind of method and solid state hard disc for lifting solid state hard disc reading performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107943713A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648778A (en) * | 2018-05-21 | 2018-10-12 | 深圳忆联信息系统有限公司 | A kind of solid state disk read apparatus and its method |
| CN109508149A (en) * | 2018-11-10 | 2019-03-22 | 苏州韦科韬信息技术有限公司 | Data transmission method and solid-state hard disk controller |
| CN110297603A (en) * | 2019-06-25 | 2019-10-01 | 深圳忆联信息系统有限公司 | Random write performance method for improving, device and computer equipment based on solid state hard disk |
| CN110377233A (en) * | 2019-07-22 | 2019-10-25 | 深圳忆联信息系统有限公司 | SSD reading performance optimization method, device, computer equipment and storage medium |
| CN110531928A (en) * | 2019-08-09 | 2019-12-03 | 深圳大普微电子科技有限公司 | The data random writing method, apparatus and DRAM-Less solid state hard disk of DRAM-Less solid state hard disk |
| CN110658999A (en) * | 2019-09-26 | 2020-01-07 | 苏州浪潮智能科技有限公司 | Information updating method, device, equipment and computer readable storage medium |
| CN110737405A (en) * | 2019-10-14 | 2020-01-31 | 深圳忆联信息系统有限公司 | Method and device for realizing word data storage based on solid state disk |
| CN110968524A (en) * | 2019-12-09 | 2020-04-07 | Oppo广东移动通信有限公司 | Data storage control method, device, storage medium and electronic device |
| CN111506262A (en) * | 2020-03-25 | 2020-08-07 | 华为技术有限公司 | Storage system, file storage and reading method and terminal equipment |
| CN113392036A (en) * | 2020-03-11 | 2021-09-14 | 深圳星火半导体科技有限公司 | Solid-state memory and data writing method and device thereof |
| WO2023143596A1 (en) * | 2022-01-30 | 2023-08-03 | 华为技术有限公司 | Storage method, storage management device, storage disk, and storage system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080215800A1 (en) * | 2000-01-06 | 2008-09-04 | Super Talent Electronics, Inc. | Hybrid SSD Using A Combination of SLC and MLC Flash Memory Arrays |
| CN101656104A (en) * | 2008-08-22 | 2010-02-24 | 群联电子股份有限公司 | Flash memory storage system and data writing method thereof |
| CN102591807A (en) * | 2011-12-30 | 2012-07-18 | 记忆科技(深圳)有限公司 | Processing method for power down and abnormal writing of solid state disc and system |
| CN104572478A (en) * | 2013-10-14 | 2015-04-29 | 联想(北京)有限公司 | Data access method and data access device |
| CN106843762A (en) * | 2017-01-17 | 2017-06-13 | 北京联想核芯科技有限公司 | The method and solid state hard disc of managing storage area |
| CN107291381A (en) * | 2017-05-18 | 2017-10-24 | 记忆科技(深圳)有限公司 | The implementation method and solid state hard disc of a kind of dynamic accelerating region of solid state hard disc |
| CN107357534A (en) * | 2017-07-18 | 2017-11-17 | 深圳市德名利电子有限公司 | A kind of dynamic switching method and system of flash block pattern |
-
2017
- 2017-11-22 CN CN201711172377.5A patent/CN107943713A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080215800A1 (en) * | 2000-01-06 | 2008-09-04 | Super Talent Electronics, Inc. | Hybrid SSD Using A Combination of SLC and MLC Flash Memory Arrays |
| CN101656104A (en) * | 2008-08-22 | 2010-02-24 | 群联电子股份有限公司 | Flash memory storage system and data writing method thereof |
| CN102591807A (en) * | 2011-12-30 | 2012-07-18 | 记忆科技(深圳)有限公司 | Processing method for power down and abnormal writing of solid state disc and system |
| CN104572478A (en) * | 2013-10-14 | 2015-04-29 | 联想(北京)有限公司 | Data access method and data access device |
| CN106843762A (en) * | 2017-01-17 | 2017-06-13 | 北京联想核芯科技有限公司 | The method and solid state hard disc of managing storage area |
| CN107291381A (en) * | 2017-05-18 | 2017-10-24 | 记忆科技(深圳)有限公司 | The implementation method and solid state hard disc of a kind of dynamic accelerating region of solid state hard disc |
| CN107357534A (en) * | 2017-07-18 | 2017-11-17 | 深圳市德名利电子有限公司 | A kind of dynamic switching method and system of flash block pattern |
Non-Patent Citations (2)
| Title |
|---|
| JUNG-WOOK PARK ETC.: "A hybrid flash translation layer design for SLC–MLC flash memory based multibank solid state disk", 《MICROPROCESSORS AND MICROSYSTEMS》 * |
| 黄赛: "基于闪存的缓存管理研究", 《华中科技大学博士学位论文》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108648778A (en) * | 2018-05-21 | 2018-10-12 | 深圳忆联信息系统有限公司 | A kind of solid state disk read apparatus and its method |
| CN109508149A (en) * | 2018-11-10 | 2019-03-22 | 苏州韦科韬信息技术有限公司 | Data transmission method and solid-state hard disk controller |
| CN110297603A (en) * | 2019-06-25 | 2019-10-01 | 深圳忆联信息系统有限公司 | Random write performance method for improving, device and computer equipment based on solid state hard disk |
| CN110297603B (en) * | 2019-06-25 | 2023-02-10 | 深圳忆联信息系统有限公司 | Method and device for improving random writing performance based on solid state disk and computer equipment |
| CN110377233B (en) * | 2019-07-22 | 2022-03-29 | 深圳忆联信息系统有限公司 | SSD (solid State disk) reading performance optimization method and device, computer equipment and storage medium |
| CN110377233A (en) * | 2019-07-22 | 2019-10-25 | 深圳忆联信息系统有限公司 | SSD reading performance optimization method, device, computer equipment and storage medium |
| CN110531928A (en) * | 2019-08-09 | 2019-12-03 | 深圳大普微电子科技有限公司 | The data random writing method, apparatus and DRAM-Less solid state hard disk of DRAM-Less solid state hard disk |
| CN110531928B (en) * | 2019-08-09 | 2023-04-25 | 深圳大普微电子科技有限公司 | Random data writing method and device for DRAM-Less solid state disk and DRAM-Less solid state disk |
| CN110658999B (en) * | 2019-09-26 | 2022-07-22 | 苏州浪潮智能科技有限公司 | Information updating method, device, equipment and computer readable storage medium |
| CN110658999A (en) * | 2019-09-26 | 2020-01-07 | 苏州浪潮智能科技有限公司 | Information updating method, device, equipment and computer readable storage medium |
| CN110737405A (en) * | 2019-10-14 | 2020-01-31 | 深圳忆联信息系统有限公司 | Method and device for realizing word data storage based on solid state disk |
| CN110968524B (en) * | 2019-12-09 | 2022-04-12 | Oppo广东移动通信有限公司 | Data storage control method, device, storage medium and electronic device |
| CN110968524A (en) * | 2019-12-09 | 2020-04-07 | Oppo广东移动通信有限公司 | Data storage control method, device, storage medium and electronic device |
| CN113392036A (en) * | 2020-03-11 | 2021-09-14 | 深圳星火半导体科技有限公司 | Solid-state memory and data writing method and device thereof |
| CN113392036B (en) * | 2020-03-11 | 2024-02-02 | 深圳星火半导体科技有限公司 | Solid-state memory and data writing method and device thereof |
| CN111506262A (en) * | 2020-03-25 | 2020-08-07 | 华为技术有限公司 | Storage system, file storage and reading method and terminal equipment |
| WO2023143596A1 (en) * | 2022-01-30 | 2023-08-03 | 华为技术有限公司 | Storage method, storage management device, storage disk, and storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107943713A (en) | A kind of method and solid state hard disc for lifting solid state hard disc reading performance | |
| US8375159B2 (en) | Electronic storage device and control method thereof | |
| CN103257935B (en) | A kind of buffer memory management method and application thereof | |
| US8681443B2 (en) | Shingle-written magnetic recording (SMR) device with hybrid E-region | |
| US8225044B2 (en) | Storage system which utilizes two kinds of memory devices as its cache memory and method of controlling the storage system | |
| CN101446924B (en) | Method and system for storing and obtaining data | |
| US20120290769A1 (en) | Flash memory device, memory control device, memory control method, and storage system | |
| CN101819509A (en) | Solid state disk read-write method | |
| CN106843742A (en) | Solid state hard disc and its method for performing delete command | |
| CN108845957B (en) | Replacement and write-back self-adaptive buffer area management method | |
| US9268705B2 (en) | Data storage device and method of managing a cache in a data storage device | |
| US8819350B2 (en) | Memory system | |
| KR20210096133A (en) | Maintenance of write commands in zoned namespaces | |
| CN107608625A (en) | A kind of method for lifting solid storage device reading performance | |
| CN109739696B (en) | Double-control storage array solid state disk caching acceleration method | |
| CN107832007A (en) | A kind of method of raising SSD combination properties | |
| CN106527987A (en) | Non-DRAM SSD master control reliability improving system and method | |
| CN104794066A (en) | Storage apparatus and method for selecting storage area where data is written | |
| CN101819821B (en) | Dynamic loss balancing method for solid state disk | |
| CN108647157A (en) | A kind of mapping management process and solid state disk based on phase transition storage | |
| CN105138277A (en) | Cache management method for solid-state disc array | |
| CN106205707B (en) | Memory device | |
| CN110275678B (en) | STT-MRAM-based solid state memory device random access performance improvement method | |
| CN110347339B (en) | Controllable continuous writing method, scheduler and storage system for mechanical hard disk | |
| CN110174998A (en) | A method of improving high-speed signal acquisition system real time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |