CN101739306A - Method for processing data errors, and device and system for checking and correcting data errors - Google Patents
Method for processing data errors, and device and system for checking and correcting data errors Download PDFInfo
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Abstract
The embodiment of the invention discloses a method for processing data errors, and a device and a system for checking and correcting the data errors. The method for processing the data errors comprises the following steps of: acquiring a bit number with errors in a data block; judging whether the bit number with errors is greater than or equal to the preset threshold value which is smaller than a maximum bit position number corrected by the device for checking and correcting the data errors; and identifying a physical block which stores the data block as a bad block if the bit number with errors is grater than or equal to the preset threshold value. Because the physical block which stores the data block is identified as the bad block if the bit number with errors is judged to be greater than or equal to the preset threshold value which is smaller than the maximum bit position number corrected by the device for checking and correcting the data errors, the method for processing the data errors, and the device and the system for checking and correcting the data errors of the embodiment of the invention can effectively avoid the appearance of the errors which cannot be corrected so as to avoid the loss of the user data and prevent modifying the user data by mistake.
Description
Technical field
The present invention relates to technical field of memory, relate in particular to a kind of error in data disposal route, data error check and correcting device and system.
Background technology
(Error Checking and Correcting is a kind ofly can judge and the algorithm of correction of data mistake that the error in data number of bits that it can be corrected is fixed ECC) for bug check and correction.When the figure place that occurs error bit in the data block surpasses the number of bits that the ECC module can error correction, the mistake that ECC just can not correction of data, thus can cause losing of user data blocks of data, and can't retrieve.
In the prior art, when the verification of ECC module goes out the data bit mistake, if the bit number of makeing mistakes less than the ECC module can error correction the maximal bit bits number, then the ECC module is repaired the corresponding error bit automatically; If the bit number of makeing mistakes greater than the maximal bit bits number of ECC module energy error correction, then is designated as bad piece to the physical block of the wrong data of storage appearance.
In realizing process of the present invention, the inventor finds that there is following defective at least in technique scheme:
When the ECC check errors took place, the bit number of makeing mistakes had surpassed the maximal bit bits number of ECC module energy error correction, and the data of this data block are irrecoverable usually, thereby caused loss of user data.And when the bit number of makeing mistakes surpasses the maximal bit bits number that the ECC module can error correction, the situation that may occur failing to report also, when failing to report, not only correctly error correction also may be corrected mistakes correct data.
Summary of the invention
The embodiment of the invention provides a kind of error in data disposal route, data error check and correcting device and system.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
A kind of error in data disposal route comprises:
Obtain and occur wrong bit number in the data block;
Whether judge the described bit number that mistake occurs more than or equal to the threshold value that presets, the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy;
If described when wrong bit number occurring, the physical block of the described data block of storage is designated bad piece more than or equal to the threshold value that presets.
A kind of data error check and correcting device comprise:
Acquiring unit is used for obtaining data block and wrong bit number occurs;
Judging unit is used to judge that whether described that described acquiring unit obtains wrong bit number occurs more than or equal to the threshold value that presets, and the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy;
Processing unit is used in that described judgment unit judges is described when occurring wrong bit number more than or equal to the described threshold value that presets, and the physical block of the described data block of storage is designated bad piece.
A kind of data transmission system comprises:
Data error check and correcting device are used for obtaining data block and wrong bit number occurs; Whether judge the described bit number that mistake occurs more than or equal to the threshold value that presets, the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy; If described when wrong bit number occurring more than or equal to the threshold value that presets, the physical block of the described data block of storage is designated bad piece, inform that described control module no longer writes data in described physical block;
Control module is used for writing data according to informing no longer of described data error check and correcting device toward described physical block.
The above technical scheme that provides from the embodiment of the invention as can be seen, because when wrong bit number judge occurring more than or equal to the threshold value that presets, the physical block of the described data block of storage is designated bad piece, the above-mentioned threshold value that presets be less than data error check and correcting device can error correction the maximal bit bits number, thereby can effectively avoid occurring can not error correction mistake take place, thereby can avoid loss of user data and bug patch user data.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the process flow diagram of a kind of error in data disposal route of the embodiment of the invention one elaboration;
Fig. 2 is the process flow diagram of a kind of error in data disposal route of the embodiment of the invention two elaborations;
Fig. 3 is a kind of data error check of embodiment of the invention elaboration and the composition synoptic diagram of correcting device;
Fig. 4 is the composition frame chart of a kind of data transmission system of embodiment of the invention elaboration.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of error in data disposal route, data error check and correcting device and system, by this method, can effectively avoid occurring can not error correction mistake take place, thereby can avoid loss of user data and bug patch user data.
In order to prevent when the bit number that mistake occurs surpasses the maximal bit bits number of ECC module energy error correction, the irrecoverable error data occurring produces, cause loss of user data, the embodiment of the invention has proposed a kind of error in data disposal route, the bit number that mistake occurs is judged in advance before producing the irrecoverable error data occurring, can effectively be prevented loss of user data.
At first set forth a kind of error in data disposal route below.
Embodiment one
Present embodiment is set forth a kind of error in data disposal route, the method that wrong bit number is handled occurs in according to data block when adopting ECC to carry out error correction, is elaborated below in conjunction with accompanying drawing.
Referring to Fig. 1, the method for present embodiment can may further comprise the steps:
Step 101: obtain the bit number that occurs mistake in the data block;
Before step 101, can also comprise a step: judge whether above-mentioned data block sends mistake, if make a mistake, then obtain the bit number that occurs mistake in the data block,, then this data block is carried out subsequent treatment according to normal data processing method if do not make a mistake.
Step 102: whether judge the described bit number that mistake occurs more than or equal to the threshold value that presets, the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy;
The above-mentioned threshold value that presets is predefined, and its value can be chosen as the maximal bit bits number less than the error correction of ECC module energy.For example, the ECC module can error correction the maximal bit bits number be 8 bits, can preestablish above-mentioned threshold value is that 7 bits or 6 compare top grade, the size of threshold value is set according to the actual demand to the data accuracy, if the accuracy to data is had relatively high expectations, what above-mentioned threshold value can be provided with is more on the low side a little, if the accuracy of data is not had specific (special) requirements, generally above-mentioned threshold value be set to can error correction than the ECC module the maximal bit bits number lack one value.
So long as not the physical damage under the external force effect, the bit number that the data bit mistake takes place increases gradually, that is to say that it all is according to 1 bit that same position has just begun to occur mistake, 2 bits, 3 bits ... increase gradually, in case detect when threshold value that wrong bit number equals to set in advance occurring, the physical block that just will store this data block is designated bad piece, so just can in this data block, not write data again, the bit number that the above appearance mistake of maximal bit bits number that the ECC module can error correction just can not occur so just can guarantee to greatest extent that user data can not lose.
If wrong bit number increases gradually, when so above-mentioned Rule of judgment only need work as the threshold value that bit number that mistake occurs equals to preset, the physical block that just will store described data block was designated bad piece.
For some extra situations, when for example producing suddenly a lot of bits wrong, just greater than the above-mentioned threshold value that presets, the physical block that also need to store described data block immediately this moment is designated bad piece, otherwise, continue toward this data block in, to write data, can cause lot of data mistake to occur or lose.
Step 103: the physical block that will store described data block is designated bad piece.
If in step 102, judge describedly when wrong bit number occurring, the physical block of the described data block of storage is designated bad piece more than or equal to the threshold value that presets.
If when judge occurring wrong bit number in the step 102, can adopt data error check and correcting device that described data block is carried out error correction less than the threshold value that presets.Just can normally use data error check and correcting device that data block has been carried out error correction this moment.
Present embodiment is because when judge occurring wrong bit number more than or equal to the threshold value that presets, the physical block of the described data block of storage is designated bad piece, the above-mentioned threshold value that presets be less than data error check and correcting device can error correction the maximal bit bits number, thereby can effectively avoid occurring can not error correction mistake take place, thereby can avoid loss of user data and bug patch user data.
Embodiment one has set forth a kind of error in data disposal route, and whether embodiment two sets forth a kind of first judgment data piece and make mistakes, and adopts the corresponding error in data disposal route of handling when makeing mistakes.
Embodiment two
Present embodiment is set forth a kind of error in data disposal route, by this method, can effectively avoid occurring can not error correction mistake take place, thereby can avoid loss of user data and bug patch user data.
Be elaborated below in conjunction with accompanying drawing, referring to Fig. 2, the method for present embodiment can may further comprise the steps:
Step 201: whether the judgment data piece makes mistakes, when the judgment data piece is made mistakes, and execution in step 202, when the judgment data piece is not made mistakes, execution in step 203;
In ECC algorithm implementation procedure, whether the judgment data piece mistake occurs can be to adopt following method to realize:
At first be to add check bit on original data bit, the length of check bit is directly proportional with the maximal bit bits number of ECC energy error correction; Then data bit is transmitted together with check bit or stored, when the user reads these data, regenerate one group of check bit according to data bit; Whether twice check bit be consistent comes judgment data in storage or transmission course whether mistake to take place by comparing at last.
Step 202: determine to occur wrong bit number; And execution in step 204;
Determining to occur wrong bit number can adopt following method to realize:
If two groups of check bit are inequality, represent that then mistake has appearred in data block, this moment, these data blocks then can be decoded, is incorrect with which position in the specified data piece, just can determine to occur the bit number of mistake, then the judgement in the execution in step 204.Step 202 is to detect bit number that data block makes mistakes in real time, if wrong bit number is during more than or equal to the threshold value that presets, then execution in step 205; If wrong bit number is during less than the threshold value that presets, then execution in step 206.
Step 203: store described data block;
When described data block does not make a mistake, can be to store described data block or transmit described data block to the destination.
Step 204: judge that whether the described bit number of mistake that occurs is more than or equal to the threshold value that presets; If described when wrong bit number occurring more than or equal to the threshold value that presets, execution in step 205, if described when wrong bit number occurring less than the threshold value that presets, execution in step 206;
The above-mentioned threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy.For example, the ECC module can error correction the maximal bit bits number be 8 bits, can preestablish above-mentioned threshold value is that 7 bits or 6 compare top grade, the size of threshold value is set according to the actual demand to the data accuracy, if the accuracy to data is had relatively high expectations, what above-mentioned threshold value can be provided with is more on the low side a little, if the accuracy of data is not had specific (special) requirements, generally above-mentioned threshold value be set to can error correction than the ECC module the maximal bit bits number lack one value.
In the ECC algorithm, if wrong bit number is when surpassing the maximal bit bits number that this module can error correction, the situation that will occur failing to report when failing to report, not only can not correctly report an error, and also correct data may be corrected mistakes, and miss probability is as shown in the table:
| Error correcting capability | Miss probability |
| 4 bits | Wrong bit number appears greater than 4 o'clock, 25% |
| 8 bits | Wrong bit number appears greater than 8 o'clock, 12.5% |
| 16 bits | Wrong bit number appears greater than 16 o'clock, 6.25% |
| 20 bits | Wrong bit number appears greater than 20 o'clock, 5% |
Therefore, to fail to report in order preventing, need just to handle accordingly when the bit number that mistake occurs does not also reach maximum error correcting capability, the physical block that for example will store described data block is designated bad piece, can effectively avoid the bug patch user data.
Step 205: the physical block that will store described data block is designated bad piece;
If the physical block of a stored data piece is identified as bad piece, so can toward this physical block in, not write data again, can not just handle in advance before the mistake of error correction in appearance, can avoid loss of user data or fail to report.
Step 206: adopt data error check and correcting device that described data block is carried out error correction.
When wrong bit number occurring within the ECC module can the limit of power of error correction the time, can normally use the ECC module that above-mentioned data block is carried out error correction.
Present embodiment is by when mistake appears in the judgment data piece, further judge and whether wrong bit number occurs more than or equal to the threshold value that presets, when wrong bit number occurring more than or equal to the threshold value that presets, the physical block of the described data block of storage is designated bad piece, can effectively prevent to fail to report, avoid occurring can not error correction mistake take place.
Need to prove, for aforesaid each method embodiment, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the instructions all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, do not have the part that describes in detail among certain embodiment, can be referring to the associated description of other embodiment.
A kind of method of fault processing more than is provided, and the embodiment of the invention also provides a kind of data error check and correcting device and a kind of data transmission system.
At first set forth a kind of data error check and correcting device below.
Referring to Fig. 3, a kind of data error check and correcting device can comprise with lower unit:
Acquiring unit 301 is used for obtaining data block and wrong bit number occurs;
Above-mentioned acquiring unit 301 can be by behind the decoded data block, adopts the algorithm computation analysis to obtain occurring in the data block wrong bit number.
Judging unit 302 is used to judge that whether described that described acquiring unit 301 obtains wrong bit number occurs more than or equal to the threshold value that presets, and the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy;
Above-mentioned judging unit 302 can be to adopt algorithm to realize.
Above-mentioned processing unit 303 can be to be in the same equipment with above-mentioned acquiring unit 301 and judging unit 302, also can be to be in the different equipment, in the time of in being in distinct device, can be to inform that having the equipment that physical block is designated bad piece carries out the step that the described physical block that will store described data block is designated bad piece.
Wherein, above-mentioned data error check and correcting device also comprise:
The false judgment unit is used to judge whether described data block makes a mistake;
Described acquiring unit 301 is used for when the described data block of described false judgment unit judges makes a mistake, and obtains to occur wrong bit number in the data block.
Wherein, above-mentioned data error check and correcting device also comprise:
Error correction unit, be used for the described acquiring unit of described judgment unit judges obtain described when wrong bit number occurring less than the threshold value that presets, described data block is carried out error correction.
Above-mentioned data error check and correcting device can be used to realize the error in data disposal route of embodiment one and embodiment two elaborations, but are not limited to realize this method.
In order to illustrate better above-mentioned data error check and correcting device are how to realize above-mentioned wrong method, illustrate below in conjunction with embodiment one.After the acquiring unit in data error check and the correcting device gets access to the bit number that occurs mistake in the data block, judging unit wrong bit number will occur and compare with the threshold value that presets, if the bit number of the appearance mistake that acquiring unit gets access to is during more than or equal to the threshold value that presets, the physical block that processing unit will store described data block is designated bad piece.Can avoid loss of user data by above-mentioned data error check and correcting device.
Set forth a kind of data error check and correcting device above, set forth a kind of data transmission system below.
Referring to Fig. 4, a kind of data transmission system comprises:
Data error check and correcting device 401 are used for obtaining data block and wrong bit number occurs; Whether judge the described bit number that mistake occurs more than or equal to the threshold value that presets, the described threshold value that presets is less than the maximal bit bits number of data error check and correcting device 401 energy error correction; If described when wrong bit number occurring more than or equal to the threshold value that presets, the physical block of the described data block of storage is designated bad piece, inform that control module no longer writes data in described physical block;
Wherein, above-mentioned data error check and correcting device 401 are used to also judge whether described data block makes a mistake.
Wherein, above-mentioned data error check and correcting device 401 also are used for when occurring wrong bit number less than the threshold value that presets, described data block being carried out error correction described.
The embodiment of the invention is because when judge occurring wrong bit number more than or equal to the threshold value that presets, the physical block of the described data block of storage is designated bad piece, the above-mentioned threshold value that presets be less than data error check and correcting device can error correction the maximal bit bits number, thereby can effectively avoid occurring can not error correction mistake take place, thereby can avoid loss of user data and bug patch user data.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out
Obtain and occur wrong bit number in the data block;
Whether judge the described bit number that mistake occurs more than or equal to the threshold value that presets, the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy;
If described when wrong bit number occurring, the physical block of the described data block of storage is designated bad piece more than or equal to the threshold value that presets.
The above-mentioned storage medium of mentioning can be a ROM (read-only memory), disk or CD etc.
More than a kind of error in data disposal route, data error check and correcting device and system that the embodiment of the invention provided are described in detail, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. an error in data disposal route is characterized in that, comprising:
Obtain and occur wrong bit number in the data block;
Whether judge the described bit number that mistake occurs more than or equal to the threshold value that presets, the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy;
If described when wrong bit number occurring, the physical block of the described data block of storage is designated bad piece more than or equal to the threshold value that presets.
2. error in data disposal route according to claim 1 is characterized in that, also comprising before the wrong bit number appears in the data block in described obtaining:
Judge whether described data block makes a mistake; If described data block makes a mistake, carry out the described step that occurs wrong bit number in the data block of obtaining.
3. error in data disposal route according to claim 1 and 2 is characterized in that, if described when occurring wrong bit number less than the described threshold value that presets, adopts data error check and correcting device that described data block is carried out error correction.
4. data error check and correcting device is characterized in that, comprising:
Acquiring unit is used for obtaining data block and wrong bit number occurs;
Judging unit is used to judge that whether described that described acquiring unit obtains wrong bit number occurs more than or equal to the threshold value that presets, and the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy;
Processing unit is used in that described judgment unit judges is described when occurring wrong bit number more than or equal to the described threshold value that presets, and the physical block of the described data block of storage is designated bad piece.
5. data error check according to claim 4 and correcting device is characterized in that, also comprise:
The false judgment unit is used to judge whether described data block makes a mistake;
Described acquiring unit is used for when the described data block of described false judgment unit judges makes a mistake, and obtains to occur wrong bit number in the data block.
6. according to claim 4 or 5 described data error check and correcting devices, it is characterized in that, also comprise:
Error correction unit, be used for the described acquiring unit of described judgment unit judges obtain described when wrong bit number occurring less than the threshold value that presets, described data block is carried out error correction.
7. a data transmission system is characterized in that, comprising:
Data error check and correcting device are used for obtaining data block and wrong bit number occurs; Whether judge the described bit number that mistake occurs more than or equal to the threshold value that presets, the described threshold value that presets is less than the maximal bit bits number of data error check and the error correction of correcting device energy; If described when wrong bit number occurring more than or equal to the threshold value that presets, the physical block of the described data block of storage is designated bad piece, inform that described control module no longer writes data in described physical block;
Control module is used for writing data according to informing no longer of described data error check and correcting device toward described physical block.
8. data transmission system according to claim 7 is characterized in that, described data error check and correcting device are used to also judge whether described data block makes a mistake.
9. according to claim 7 or 8 described data transmission systems, it is characterized in that described data error check and correcting device also are used for when occurring wrong bit number less than the described threshold value that presets, described data block being carried out error correction described.
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| CN200810171869A CN101739306A (en) | 2008-11-12 | 2008-11-12 | Method for processing data errors, and device and system for checking and correcting data errors |
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| CN200810171869A CN101739306A (en) | 2008-11-12 | 2008-11-12 | Method for processing data errors, and device and system for checking and correcting data errors |
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| CN102281188A (en) * | 2011-06-14 | 2011-12-14 | 北京飞杰信息技术有限公司 | Data transmission method and device for enterprise storage system |
| CN104036623A (en) * | 2013-03-05 | 2014-09-10 | 南京物联传感技术有限公司 | Method for correcting false data information alarm |
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| CN111741292A (en) * | 2020-06-24 | 2020-10-02 | 湖南国科微电子股份有限公司 | Video error simulation method and device, readable storage medium and electronic equipment |
| CN111741292B (en) * | 2020-06-24 | 2022-02-11 | 湖南国科微电子股份有限公司 | Video error simulation method and device, readable storage medium and electronic equipment |
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| WO2023241160A1 (en) * | 2022-06-13 | 2023-12-21 | 武汉杰开科技有限公司 | Data writing and management method based on simulated eeprom |
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