CN108762974A - A kind of blank page checking system for flash memory correlation main control end control device - Google Patents
A kind of blank page checking system for flash memory correlation main control end control device Download PDFInfo
- Publication number
- CN108762974A CN108762974A CN201810395345.XA CN201810395345A CN108762974A CN 108762974 A CN108762974 A CN 108762974A CN 201810395345 A CN201810395345 A CN 201810395345A CN 108762974 A CN108762974 A CN 108762974A
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- CN
- China
- Prior art keywords
- flash memory
- blank page
- memory storage
- main control
- detection module
- 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.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1068—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices in sector programmable memories, e.g. flash disk
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1012—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error
- G06F11/1032—Simple parity
-
- 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
Abstract
The invention discloses a kind of blank page checking systems for flash memory correlation main control end control device, including main control chip and flash memory storage assembly, flash memory storage controller is equipped in main control chip, writing unit and reading unit are equipped in flash memory storage controller, writing unit and reading unit are separately connected flash memory storage assembly, the present invention does detection in advance using blank page detection module and tells blank page data, give up or omit normal post code or data transmission flow to appropriateness, to save the use of master control resource, reaches and improve master control overall data process efficiency purpose.
Description
Technical field
The present invention relates to flash memory technology field, specially a kind of blank page for flash memory correlation main control end control device is examined
System.
Background technology
Flash memory is depositing for a kind of non-volatile (the remaining to keep stored data information under power blackout situation) of long-life
Reservoir, data deletion is not as unit of single byte but as unit of fixed block, and block size is generally 256KB
To 20MB.Flash memory is the mutation of Electrical Erasable read-only memory (EEPROM), and flash memory is unlike EEPROM, EEPROM energy
It is deleted and is rewritten in byte-level rather than entire chip is erasable, and most of chip of flash memory needs block to wipe.By
Remain to preserve data when it is powered off, flash memory is usually used to preservation setting information, such as the BIOS of computer (basic program),
Preservation data etc. in PDA (personal digital assistant), digital camera.
Master control is needed according to ordinary procedure by transmission " post code " " distribution " " sequence " etc. from the data of flash memory reading
Program can send host side but if it is empty page data back to, need to sequentially carry out above-mentioned steps according to normal flow, can send
Host side is returned, causes working efficiency low.
Invention content
The purpose of the present invention is to provide a kind of blank page checking systems for flash memory correlation main control end control device, with solution
Certainly the problems mentioned above in the background art.
To achieve the above object, the present invention provides the following technical solutions：One kind being used for flash memory correlation main control end control device
Blank page checking system, including main control chip and flash memory storage assembly are equipped with flash memory storage controller, institute in the main control chip
It states and is equipped with writing unit and reading unit in flash memory storage controller, said write unit and reading unit are separately connected flash memory storage
Deposit component.
Preferably, further include blank page detection module, the blank page detection module is arranged in flash memory storage controller, described
Blank page detection module connects reading unit.
Preferably, the blank page detection module detection method is as follows：
A, reading unit reads the content of flash memory storage assembly；By flash memory storage controller at least one yard of the flash memory storage group
Word carries out low-density parity inspection decoding and obtains decoded code word and inspection result vector；
B, when the low-density parity inspection of an at least code word is decoded as successfully, by the judgement flash memory storage of flash memory storage controller
Component is not blank page；
C, it when the low-density parity inspection of an at least code word is decoded as unsuccessfully, is counted in the inspection by flash memory storage controller
Look into the bit quantity or count the bit quantity that position is 0 in the inspection result vector that position in result vector is 1；And according at this
The bit quantity that position is 1 in inspection result vector, or according to the bit quantity that position is 0 in the inspection result vector, by flash memory
Storage control judges whether flash memory storage assembly is blank page.
Preferably, include the following steps：
A, blank page detection module is sent to after the content of reading unit reading flash memory storage assembly to be detected；
If B, blank page detection module detects blank page, host side is replied after rapid generation corresponding informance；
C, if it is detected that not being blank page, carry out data transmission after carrying out error-correcting decoding；
D, final data is transmitted to host side.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention does detection point in advance using blank page detection module
Blank page data are discerned, gives up or omits normal post code or data transmission flow to appropriateness, used, reached with saving master control resource
At raising master control overall data process efficiency purpose.
Description of the drawings
Fig. 1 is principle of the invention block diagram；
Fig. 2 is flow chart of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of sky for flash memory correlation main control end control device
Page checking system, including main control chip 1 and flash memory storage assembly 2, the main control chip 1 is interior to be equipped with flash memory storage controller 3, institute
It states and is equipped with writing unit 4 and reading unit 5 in flash memory storage controller 3, said write unit 4 and reading unit 5 are separately connected
Flash memory storage assembly 2；Further include blank page detection module 6, the blank page detection module 6 is arranged in flash memory storage controller 3, institute
It states blank page detection module 6 and connects reading unit 5.
In the present invention, blank page detection module detection method is as follows：
A, reading unit reads the content of flash memory storage assembly；By flash memory storage controller at least one yard of the flash memory storage group
Word carries out low-density parity inspection decoding and obtains decoded code word and inspection result vector；
B, when the low-density parity inspection of an at least code word is decoded as successfully, by the judgement flash memory storage of flash memory storage controller
Component is not blank page；
C, it when the low-density parity inspection of an at least code word is decoded as unsuccessfully, is counted in the inspection by flash memory storage controller
Look into the bit quantity or count the bit quantity that position is 0 in the inspection result vector that position in result vector is 1；And according at this
The bit quantity that position is 1 in inspection result vector, or according to the bit quantity that position is 0 in the inspection result vector, by flash memory
Storage control judges whether flash memory storage assembly is blank page.
The blank page detection module that the present invention uses avoids wasting time to carry out with resource to recognize blank page data
Normal data post code, and largely reduce the time loss for replying host side.
The application method of the present invention includes the following steps：
A, blank page detection module is sent to after the content of reading unit reading flash memory storage assembly to be detected；
If B, blank page detection module detects blank page, host side is replied after rapid generation corresponding informance；
C, if it is detected that not being blank page, carry out data transmission after carrying out error-correcting decoding；
D, final data is transmitted to host side.
In conclusion the present invention does detection in advance using blank page detection module tells blank page data, to appropriate house
Normal post code or data transmission flow are abandoned or omitted, to save the use of master control resource, reaches and improves master control overall data process effect
Rate purpose.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of blank page checking system for flash memory correlation main control end control device, including main control chip（1）It is stored with flash memory
Component（2）, it is characterised in that：The main control chip（1）It is interior to be equipped with flash memory storage controller（3）, the flash memory storage controller
（3）It is interior to be equipped with writing unit（4）And reading unit（5）, said write unit（4）And reading unit（5）It is separately connected flash memory storage
Deposit component（2）.
2. a kind of blank page checking system for flash memory correlation main control end control device according to claim 1, feature
It is：It further include blank page detection module（6）, the blank page detection module（6）It is arranged in flash memory storage controller（3）In, it is described
Blank page detection module（6）Connect reading unit（5）.
3. a kind of blank page checking system for flash memory correlation main control end control device according to claim 2, feature
It is：The blank page detection module detection method is as follows：
A, reading unit reads the content of flash memory storage assembly；By flash memory storage controller at least one yard of the flash memory storage group
Word carries out low-density parity inspection decoding and obtains decoded code word and inspection result vector；
B, when the low-density parity inspection of an at least code word is decoded as successfully, by the judgement flash memory storage of flash memory storage controller
Component is not blank page；
C, it when the low-density parity inspection of an at least code word is decoded as unsuccessfully, is counted in the inspection by flash memory storage controller
Look into the bit quantity or count the bit quantity that position is 0 in the inspection result vector that position in result vector is 1；And according at this
The bit quantity that position is 1 in inspection result vector, or according to the bit quantity that position is 0 in the inspection result vector, by flash memory
Storage control judges whether flash memory storage assembly is blank page.
4. realizing a kind of user of blank page checking system for flash memory correlation main control end control device described in claim 1
Method, it is characterised in that:Include the following steps：
A, blank page detection module is sent to after the content of reading unit reading flash memory storage assembly to be detected；
If B, blank page detection module detects blank page, host side is replied after rapid generation corresponding informance；
C, if it is detected that not being blank page, carry out data transmission after carrying out error-correcting decoding；
D, final data is transmitted to host side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810395345.XA CN108762974A (en) | 2018-04-27 | 2018-04-27 | A kind of blank page checking system for flash memory correlation main control end control device |
| PCT/CN2018/105885 WO2019205453A1 (en) | 2018-04-27 | 2018-09-15 | Blank page inspection system for flash memory related master control terminal control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810395345.XA CN108762974A (en) | 2018-04-27 | 2018-04-27 | A kind of blank page checking system for flash memory correlation main control end control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108762974A true CN108762974A (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810395345.XA Pending CN108762974A (en) | 2018-04-27 | 2018-04-27 | A kind of blank page checking system for flash memory correlation main control end control device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108762974A (en) |
| WO (1) | WO2019205453A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020118941A1 (en) * | 2018-12-09 | 2020-06-18 | 江苏华存电子科技有限公司 | Method used for main flash memory hardware automatically and quickly generating flash memory interface signal sequence |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103150124A (en) * | 2013-01-29 | 2013-06-12 | 深圳市硅格半导体有限公司 | Method and device for solving SD (Secure Digital) protocol overtime problem |
| CN103226528A (en) * | 2012-01-31 | 2013-07-31 | 上海华虹集成电路有限责任公司 | Multi-channel Nandflash controller |
| CN104299637A (en) * | 2013-07-17 | 2015-01-21 | 慧荣科技股份有限公司 | Flash memory device and operation method thereof |
| CN106847342A (en) * | 2016-03-28 | 2017-06-13 | 威盛电子股份有限公司 | Nonvolatile memory device and empty page detection method thereof |
-
2018
- 2018-04-27 CN CN201810395345.XA patent/CN108762974A/en active Pending
- 2018-09-15 WO PCT/CN2018/105885 patent/WO2019205453A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226528A (en) * | 2012-01-31 | 2013-07-31 | 上海华虹集成电路有限责任公司 | Multi-channel Nandflash controller |
| CN103150124A (en) * | 2013-01-29 | 2013-06-12 | 深圳市硅格半导体有限公司 | Method and device for solving SD (Secure Digital) protocol overtime problem |
| CN104299637A (en) * | 2013-07-17 | 2015-01-21 | 慧荣科技股份有限公司 | Flash memory device and operation method thereof |
| CN106847342A (en) * | 2016-03-28 | 2017-06-13 | 威盛电子股份有限公司 | Nonvolatile memory device and empty page detection method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020118941A1 (en) * | 2018-12-09 | 2020-06-18 | 江苏华存电子科技有限公司 | Method used for main flash memory hardware automatically and quickly generating flash memory interface signal sequence |
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| Publication number | Publication date |
|---|---|
| WO2019205453A1 (en) | 2019-10-31 |
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Application publication date: 20181106 |
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