CN110825557A - Storage method and storage system - Google Patents
Storage method and storage system Download PDFInfo
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- CN110825557A CN110825557A CN201911073548.8A CN201911073548A CN110825557A CN 110825557 A CN110825557 A CN 110825557A CN 201911073548 A CN201911073548 A CN 201911073548A CN 110825557 A CN110825557 A CN 110825557A
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- 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
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- 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
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Abstract
The invention provides a storage method, which comprises a storage step and a reading step, wherein the storage step comprises the step of sending mode information after selecting a storage mode; the unique identification code is subjected to burning check calculation according to the mode information to generate an original check code, and then the unique identification code and the original check code are stored, so that the single storage mode is avoided; the reading step comprises reading the unique identification code and the original check code, and then performing reading check calculation on the unique identification code to obtain a new check code; and comparing the new check code with the original check code, if the new check code is different from the original check code, correcting the unique identification code according to the original check code, and then outputting the corrected unique identification code, so that inaccuracy caused by damage of the unique identification code is avoided. The invention also provides a storage system for realizing the storage method.
Description
Technical Field
The present invention relates to the field of information storage technologies, and in particular, to a storage method and a storage system.
Background
The unique identification code of the chip is widely applied to the integrated circuit industry and is used for independently numbering each produced material, and in the using process of the chip, the full-flow data of production, manufacturing and testing of the chip can be traced back through the unique identification code of the chip, so that a user can quickly position and screen the range to be controlled.
One Time Programmable (OTP) memory is generally implemented by an electrically Programmable fuse circuit, and a unique identifier of a chip can be programmed once, and cannot be rewritten again after the programming is completed, so that the uniqueness and tamper resistance of the unique identifier are ensured.
However, the existing one-time programmable memory has certain problems, and due to the problems of process limitation, aging and the like of the electrically programmed fuse circuit, the stored data may have a bit flipping phenomenon in the transmission and storage processes, so that the unique identification code is mistaken, and the tracing of the subsequent unique identification code and the use of encryption application are influenced.
Chinese patent application publication No. CN104956445A discloses Error detection and correction of one-time programmable elements, a one-time circuit comprising a first one-time programmable (OTP) element and a second OTP element, the circuit further comprising Error detection circuitry coupled to receive a first representation of data from the first OTP element, the circuit further comprising output circuitry corresponding to an output of the Error detection circuitry to output an OTP read result based on the first representation of the data or based on a second representation of the data from the second OTP element, the invention being based on a dual OTP configuration where each OTP is subjected to a separate Error Checking and Correction (ECC) calculation, and finally to Error correction based on the result of the dual ECC calculation, thereby preventing data errors.
However, the invention is suitable for the error scene of burst errors, is not suitable for storing the unique identification code of the chip, has single storage mode and lacks flexibility, and can not meet the requirements of different use scenes.
Therefore, there is a need to provide a novel storage method and a storage system to solve the above-mentioned problems in the prior art.
Disclosure of Invention
The invention aims to provide a storage method and a storage system, which avoid the problems of damage of a unique identification code in the storage process and single storage mode.
To achieve the above object, the storage method of the present invention includes a storing step and a reading step,
the storage step comprises the steps of sending mode information after selecting a storage mode; performing burning check calculation on the unique identification code according to the mode information to generate an original check code, and then storing the unique identification code and the original check code;
the reading step comprises reading the unique identification code and the original check code, and then performing reading check calculation on the unique identification code to obtain a new check code; and comparing the new check code with the original check code, if the new check code is different from the original check code, correcting the unique identification code according to the original check code, and then outputting the corrected unique identification code.
The invention has the beneficial effects that: different burning check calculations are carried out on the unique identification code according to the mode information to generate an original check code, and then the unique identification code and the original check code are stored, so that the single storage mode is avoided; the unique identification code and the original check code are stored simultaneously, a new check code is calculated and compared with the original check code when the unique identification code is read, if the new check code is different from the original check code, the unique identification code is corrected according to the original check code, then the corrected unique identification code is output, the unique identification code can be corrected, and inaccuracy caused by damage of the unique identification code is avoided.
Preferably, the storing step further comprises receiving a unique identification code and mode information, and directly storing the unique identification code according to the stored information. The beneficial effects are that: the unique identification code can be directly stored without burning verification calculation, so that the original verification code is prevented from occupying storage space, and the storage capacity of the unique identification code is improved.
Preferably, the storing step further includes adding a check mark to the unique identification code according to the mode information. The beneficial effects are that: it is convenient to distinguish the storage mode of the unique identification code.
Further preferably, the reading step further includes performing reading verification calculation on the unique identification code according to the verification identifier to obtain a new verification code. The beneficial effects are that: the unique identification code is convenient to store in different storage modes during reading and is verified, and the damaged unique identification code is prevented from being read.
The invention also provides a storage system, which comprises a mode selection module, a verification burning module, a storage module, a verification reading module and a correction module,
the mode selection module is used for sending mode information after selecting a storage mode;
the checking and burning module is used for checking and calculating the unique identification code according to the mode information to generate an original check code;
the storage module is used for storing the unique identification code and the original check code;
the check reading module is used for reading the unique identification code and the original check code, and then performing read check calculation on the unique identification code to obtain a new check code;
the correction module is used for comparing the new check code with the original check code, correcting the unique identification code according to the original check code if the new check code is different from the original check code, and then outputting the corrected unique identification code.
The storage system has the advantages that: the verification burning module carries out different burning verification calculations on the unique identification code according to the mode information to generate an original verification code, and then the unique identification code and the original verification code are stored through the storage module, so that the single storage mode is avoided; the storage module stores simultaneously the unique identification code with original check code to when reading, through the check-up reads the module and calculates new check code, through correct the module will new check code with original check code contrasts, and new check code with original check code is different, according to original check code is right the unique identification code is corrected, then exports the unique identification code after correcting, can correct the unique identification code, has avoided the inaccuracy that unique identification code damage leads to.
Preferably, the storage system further comprises a non-verification burning module and a non-verification reading module. The beneficial effects are that: the unique identification code is convenient to directly store, and the occupied space of the unique identification code is reduced.
Preferably, the verification burning module includes a burning selection unit and n burning calculation units, where n is a natural number greater than 0. The beneficial effects are that: different burning verification calculations can be performed on the unique identification code, and the unique identification code is stored in different manners.
Further preferably, the burning calculation unit further includes an addition identification unit. The beneficial effects are that: it is convenient to distinguish the storage mode of the unique identification code.
Preferably, the verification reading module includes a reading selection unit and n reading calculation units, where n is a natural number greater than 0. The beneficial effects are that: different reading check calculations can be performed on the unique identification code, so that the unique identification code stored in different storage modes can be conveniently read.
Further preferably, the reading calculation unit further includes an identification removal unit. The beneficial effects are that: and removing the check mark to avoid interference on the unique identification code.
Drawings
FIG. 1 is a flow chart of a storage method of the present invention;
FIG. 2 is a block diagram of the architecture of the storage system of the present invention;
FIG. 3 is a block diagram of the verification burning module according to the present invention;
FIG. 4 is a block diagram of a verification read module according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
In view of the problems in the prior art, an embodiment of the present invention provides a storage method, which includes a storage step and a reading step, with reference to fig. 1.
The storing step includes:
s1: sending mode information after selecting a storage mode;
s2: and carrying out burning check calculation on the unique identification code according to the mode information to generate an original check code, and then storing the unique identification code and the original check code.
The reading step includes:
s3: reading the unique identification code and the original check code, and then performing reading check calculation on the unique identification code to obtain a new check code;
s4: and comparing the new check code with the original check code, if the new check code is different from the original check code, correcting the unique identification code according to the original check code, and then outputting the corrected unique identification code.
In some embodiments of the present invention, the storing step further comprises receiving a unique identification code and mode information, and directly storing the unique identification code according to the stored information. The burning verification calculation can be omitted, the unique identification code can be directly stored, the original verification code is prevented from occupying storage space, and the storage capacity of the unique identification code is improved.
In some embodiments of the present invention, the reading step further includes directly reading a unique identification code for which the burning verification calculation is not performed.
In some embodiments of the present invention, the storing step further includes adding a check mark to the unique identification code according to the mode information.
In some embodiments of the present invention, the reading step further includes performing reading verification calculation on the unique identification code according to the verification identifier to obtain a new verification code.
In some embodiments of the present invention, the burning verification calculation includes a first burning verification calculation, a second burning verification calculation, a third burning verification calculation, and a fourth burning verification calculation.
In some embodiments of the invention, the read-verify calculation includes a first read-verify calculation, a second read-verify calculation, a third read-verify calculation, and a fourth read-verify calculation.
FIG. 2 is a block diagram of a memory system in some embodiments of the invention. Referring to fig. 2, the apparatus includes a non-verification burning module 10, a mode selection module 20, a verification burning module 30, a storage module 40, a verification reading module 50, a non-verification reading module 60, and a correction module 70. The non-verified burning module 10 and the non-verified reading module 60 are optional modules.
The non-verification burning module 10 is used for directly storing the unique identification code into the storage module 40 according to the mode information; the mode selection module 20 is configured to select a storage mode and then send mode information; the verification burning module 30 is configured to perform verification calculation on the unique identification code according to the mode information to generate an original verification code; the storage module 40 is configured to store the unique identification code and the original check code; the verification reading module 50 is configured to read the unique identification code and the original verification code from the storage module 40, perform a reading verification calculation on the unique identification code to obtain a new verification code, and transmit the unique identification code, the original verification code, and the new verification code to the correcting module 70; the non-verification reading module 60 is configured to directly read the unique identification code that is not subjected to the burning verification calculation from the storage module 40; the correcting module 70 is configured to compare the new check code with the original check code, correct the unique identification code according to the original check code if the new check code is different from the original check code, and then output the corrected unique identification code.
In some embodiments of the present invention, the correcting module compares the new check code with the original check code, and directly outputs the unique identification code if the new check code is the same as the original check code.
In some embodiments of the present invention, the storage module is a One Time Programmable (OTP) memory.
FIG. 3 is a block diagram of a verification burning module according to some embodiments of the present invention. Referring to fig. 3, the verification burning module 30 includes a burning selection unit 301 and n burning calculation units 302, where n is a natural number greater than 0, the burning selection unit 301 is configured to receive the mode information and the unique identification code, select the burning calculation unit 302 according to the mode information, and transmit the unique identification code to the selected burning calculation unit 302, and the burning calculation unit 302 is configured to perform verification calculation on the unique identification code to generate an original verification code, and store the original verification code and the unique identification code in the storage module 40.
In some embodiments of the present invention, the burning calculation unit includes an addition identification unit, and the addition identification unit is configured to add a check identification to the unique identification code.
FIG. 4 is a block diagram of the verify-read module according to some embodiments of the present invention. Referring to fig. 4, the verification reading module 50 includes a reading selection unit 501 and n reading calculation units 502, where n is a natural number greater than 0, the reading selection unit 501 is configured to read the unique identification code and an original verification code of the unique identification code from the storage module 40, and select the reading calculation unit 502 according to the verification identifier of the unique identification code, and the reading calculation unit 502 is configured to perform verification calculation on the unique identification code to generate a new verification code.
In some embodiments of the present invention, the reading calculation unit further includes an identification removal unit, and the identification removal unit is configured to remove the check identification of the unique identification code.
In some embodiments of the present invention, the storage system further includes a test screening unit, where the test screening unit is configured to compare the unique identification code stored in the storage module with the unique identification code stored in the storage module before the storage module, so as to determine whether the storage system is normal.
In some embodiments of the present invention, n is equal to 4, and the n burning calculation units specifically include a first burning calculation unit, a second burning calculation unit, a third burning calculation unit, and a fourth burning calculation unit.
In some embodiments of the present invention, the check mark includes a first check mark, a second check mark, a third check mark and a fourth check mark.
In some embodiments of the invention, a Cyclic Redundancy Check (CRC) code is stored in the first burning calculation unit.
In some embodiments of the invention, the second burning calculation unit stores a hamming code therein.
In some embodiments of the present invention, the third burning calculation unit stores a BCH code therein.
In some embodiments of the present invention, the fourth burning calculation unit stores Reed-solomon codes (RS).
In some embodiments of the invention, the mode information includes first mode information, second mode information, third mode information, fourth mode information, and fifth mode information.
In some specific embodiments of the present invention, if the mode selection module sends the first mode information, the burning selection unit transmits the unique identification code to the first burning calculation unit, and the first burning calculation unit performs first burning check calculation on the unique identification code through the cyclic redundancy check code, and adds the first check identifier to the unique identification code through the identifier adding unit.
In some embodiments of the present invention, if the mode selection module sends the second mode information, the burning selection unit transmits the unique identifier to the second burning calculation unit, and the second burning calculation unit performs second burning verification calculation on the unique identifier through the hamming code and adds the second verification identifier to the unique identifier through the identifier adding unit.
In some specific embodiments of the present invention, if the mode selection module sends the third mode information, the burning selection unit transmits the unique identifier to the third burning calculation unit, and the third burning calculation unit performs third burning verification calculation on the unique identifier through the BCH code, and adds the third verification identifier to the unique identifier through the identifier adding unit.
In some specific embodiments of the present invention, if the mode selection module sends the fourth mode information, the burning selection unit transmits the unique identification code to the fourth burning calculation unit, and the fourth burning calculation unit performs fourth burning verification calculation on the unique identification code through the reed-solomon code, and adds the fourth verification identifier to the unique identification code through the identifier adding unit.
In some embodiments of the present invention, if the mode selection module sends the fifth mode information, the non-verified storage module 10 transmits the unique identification code to the storage module 40 for storage.
In some embodiments of the present invention, n is equal to 4, and the n read computing units 502 includes a first read computing unit, a second read computing unit, a third read computing unit and a fourth read computing unit.
In some embodiments of the present invention, a cyclic redundancy check code is stored in the first reading calculation unit, the reading selection unit selects the first reading calculation unit according to the first check identifier, and performs a first reading check calculation on the unique identification code through the cyclic redundancy check code.
In some embodiments of the invention, a hamming code is stored in the second reading and calculating unit, and the reading and selecting unit selects the second reading and calculating unit according to the second check identifier, and performs the second reading and checking calculation on the unique identifier through the hamming code.
In some specific embodiments of the present invention, a BCH code is stored in the third reading calculating unit, and the reading selecting unit selects the third reading calculating unit according to the third verification identifier, and performs a third reading verification calculation on the unique identifier through the BCH code.
In some embodiments of the present invention, the fourth reading calculation unit stores a reed-solomon code, and the reading selection unit selects the fourth reading calculation unit according to the fourth check identifier, and performs a fourth reading check calculation on the unique identifier by using the reed-solomon code.
Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.
Claims (10)
1. A storage method is characterized by comprising a storage step and a reading step,
the storage step comprises the steps of sending mode information after selecting a storage mode; performing burning check calculation on the unique identification code according to the mode information to generate an original check code, and then storing the unique identification code and the original check code;
the reading step comprises reading the unique identification code and the original check code, and then performing reading check calculation on the unique identification code to obtain a new check code; and comparing the new check code with the original check code, if the new check code is different from the original check code, correcting the unique identification code according to the original check code, and then outputting the corrected unique identification code.
2. The storage method according to claim 1, wherein the storing step further comprises receiving a unique identification code and mode information, and directly storing the unique identification code according to the stored information.
3. The storage method according to claim 1, wherein the storing step further comprises adding a check mark to the unique identification code according to the mode information.
4. The storage method according to claim 3, wherein the reading step further comprises performing reading check calculation on the unique identification code according to the check identifier to obtain a new check code.
5. A memory system for implementing the memory method of any one of claims 1 to 4, the memory system comprising a mode selection module, a verification burning module, a memory module, a verification reading module and a correction module,
the mode selection module is used for sending mode information after selecting a storage mode;
the checking and burning module is used for checking and calculating the unique identification code according to the mode information to generate an original check code;
the storage module is used for storing the unique identification code and the original check code;
the check reading module is used for reading the unique identification code and the original check code, and then performing read check calculation on the unique identification code to obtain a new check code;
the correction module is used for comparing the new check code with the original check code, correcting the unique identification code according to the original check code if the new check code is different from the original check code, and then outputting the corrected unique identification code.
6. The storage system according to claim 5, further comprising a non-verified burning module and a non-verified reading module.
7. The storage system of claim 5, wherein the verification burning module comprises a burning selection unit and n burning calculation units, wherein n is a natural number greater than 0.
8. The storage system of claim 7, wherein the burning calculation unit further comprises an adding identification unit.
9. The memory system according to claim 5, wherein the verification reading module includes a reading selection unit and n reading calculation units, and n is a natural number greater than 0.
10. The storage system of claim 9, wherein the read computation unit further comprises a de-identification unit.
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| US20070192536A1 (en) * | 2004-02-27 | 2007-08-16 | Dell Products L.P. | Apparatus for Accessing A Computer-Readable Medium Device |
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