WO2012032595A1 - メモリ制御装置およびメモリ制御方法 - Google Patents
メモリ制御装置およびメモリ制御方法 Download PDFInfo
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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
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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
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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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1417—Boot up procedures
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- the present invention relates to a memory control device and a memory control method using an electrically rewritable nonvolatile memory (“flash ROM” or “EEPROM: Electrically Erasable Programmable ROM”).
- flash ROM electrically rewritable nonvolatile memory
- EEPROM Electrically Erasable Programmable ROM
- a flash ROM is generally mounted as a recording medium such as an operating system (OS) and application software in a memory control device that performs various controls by a CPU (Central Processing Unit).
- OS operating system
- CPU Central Processing Unit
- This flash ROM has the following characteristics. (1) Data is retained even when the power is turned off. (2) It is necessary to erase the write area before writing data. (3) It is necessary to erase data in units of blocks determined for each device, and it is performed by giving a signal according to a procedure determined for the data pins of the device. (4) Data writing is performed by giving a signal to the data pin of the device according to a predetermined procedure.
- this flash ROM is configured to record data values by confining charges in the device, a phenomenon called charge leakage is caused by variations in data retention time of each memory cell and the influence of noise. May occur. Data stored in the flash ROM may generate a bit error with a certain probability due to this charge leakage.
- Patent Document 1 As a means for solving such a problem, the conventional technique represented by the following Patent Document 1 is a recording apparatus using the above-described flash ROM as a recording medium, and when an error in the data value occurs in the flash ROM, regular data An error correction technique for correcting the error is disclosed.
- the conventional technique represented by the above-mentioned Patent Document 1 uses, for example, a flash ROM that can be erased, written, and read (hereinafter simply referred to as “write etc.”) and a read-only ROM, and starts up the CPU.
- the access to the data bus at this time is a mode in which the CPU reads data relating to a startup program (also referred to as an initialization program) stored in the ROM by operating an address signal and a memory control signal.
- a startup program also referred to as an initialization program
- the CPU is stably started using these data, and writing of data other than the startup program is executed.
- the present invention has been made in view of the above, and obtains a memory control device and a memory control method capable of stably starting a CPU using a flash ROM and performing data writing and the like. With the goal.
- the present invention records the CPU and the first information that has been subjected to the error correction coding process and the second information that has not been subjected to the error correction coding process.
- An electrically rewritable nonvolatile memory, and an address bus and the memory for detecting the address output from the CPU and enabling the CPU to read the first information recorded in the memory A first path that switches between a first path that connects and a second path that connects the address bus and the memory so that the second information recorded in the memory can be erased, written, and read.
- a switch for performing error correction of the first information recorded in the memory, and decoding information before error correction coding processing by removing redundant bits from the corrected information; and CP A third path connecting the decoder and the data bus to record the information decoded by the decoder to the data bus of the CPU, and recorded in the memory
- the CPU since the first switch and the second switch are provided, the CPU can be stably started using the flash ROM, and data can be written. Play.
- FIG. 1 is a configuration diagram of a memory control device according to an embodiment of the present invention, and is a diagram for explaining an operation when a CPU is activated.
- FIG. 2 is a configuration diagram of the memory control device according to the embodiment of the present invention, and is a diagram for explaining an operation when a flash ROM write operation or erase operation is performed.
- FIG. 3 is a diagram for explaining an effect when the memory control device according to the embodiment of the present invention is incorporated in train-mounted equipment.
- FIG. 1 is a configuration diagram of the memory control device according to the embodiment of the present invention, and is a diagram for explaining an operation when the CPU 1 is activated.
- FIG. 2 is a configuration diagram of the memory control device according to the embodiment of the present invention, and is a diagram for explaining an operation when a write operation or an erase operation of the flash ROM 4 is performed.
- the memory control device mainly includes a CPU 1, a flash ROM 4 (hereinafter simply referred to as “ROM 4”), and an address bus 2 of the CPU 1 and the ROM 4.
- Address line switch 5 first switch
- decoder 7 decoder 7
- data line switch 6 second switch
- the CPU 1 controls the operation of the memory control device.
- the CPU 1 has a function of switching the data bus width to, for example, an 8-bit data bus width or a 16-bit data bus width, and connects to the address bus 2 or the data bus 3 by operating a bus control line (not shown). Access each registered device.
- Each device is, for example, an address line switch 5 or a data line switch 6.
- the switching of the data bus width is performed based on a chip select signal (CS) generated by a bus controller (not shown) built in the CPU 1.
- CS chip select signal
- A0 and MSB most significant bit
- An (n 1, 2,).
- the address bus 2 from A0 to A9 is shown as an example.
- the address bus width and the data bus width shown in FIGS. 1 and 2 are for convenience of explanation, and are not limited thereto.
- the ROM 4 is a kind of electrically rewritable EEPROM, and is a non-volatile memory that retains information even when no driving power is supplied.
- the ROM 4 is described as having a data bus width of, for example, 16 bits (2 bytes).
- the ROM 4 stores various data such as data related to the startup program and data related to the application program.
- data that has been subjected to error correction coding processing hereinafter referred to as “first information”
- second information data that has not been subjected to error correction coding processing
- This data may be data that is considered to require error correction in the decoder 7, for example, data related to a startup program for the CPU 1.
- This data is encoded with, for example, a Hamming code having a code length of 15 and an information bit number of 11, and is recorded in the ROM 4 as first information.
- the second information is data to be written, for example.
- the number of information is the number of bits of the original data
- the ROM 4 outputs a 16-bit signal corresponding to the address values of fA0 to fA8.
- the output from the ROM 4 is taken into the decoder 7 and the data line switch 6.
- the decoder 7 performs error correction of the first information described above and decodes data before the error correction coding process.
- the decoder 7 takes in the first information from the data buses fD0 to fD15 of the ROM 4 , 11 bits of information are decoded, and 8 bits of 11 bits are output from dD0 to dD7. That is, the decoder 7 performs error correction on the first information recorded in the ROM 4, and removes redundant bits from the corrected information to decode the information before the error correction coding process.
- the data output from the decoder 7 is taken into D0 to D7 (8 bits) of the data bus 3 via the data line switch 6.
- the operation of the decoder 7 will be described using the above-described code length n and information number k.
- the decoder 7 decodes 11-bit information “k” from the 15-bit signal “n” output from the ROM 4, and further outputs 8 of the 11 bits to the data bus 3. This 8-bit data becomes the data after error correction.
- the address line switch 5 is interposed between the address bus 2 and the ROM 4 to switch the correspondence between the address buses A0 to An and the addresses fA0 to fAn of the ROM 4.
- the address line switch 5 is configured such that the CPU 1 can read the first information from the ROM 4, the first path connecting the address bus 2 of the CPU 1 and the ROM 4, and the CPU 1 writes the second information.
- the second path connecting the address bus 2 and the ROM 4 is switched as possible.
- the first path is, for example, a path connecting A0 to A8 of the address bus 2 and the address signals fA0 to fA8 of the ROM 4 as shown in FIG.
- the second path is, for example, a path connecting A1 to A9 of the address bus 2 and the address signals fA0 to fA8 of the ROM 4 as shown in FIG.
- the data line switch 6 One end of the data line switch 6 is connected to the outputs dD0 to dDn of the decoder 7 and the outputs fD0 to fDn of the ROM 4. The other end of the data line switch 6 is connected to the data bus 3.
- the data line switch 6 is interposed between the decoder 7 and the data bus 3 and switches between outputs dD0 to dDn of the decoder 7 and outputs fD0 to fDn from the ROM 4.
- the data line switch 6 has a third path connecting the decoder 7 and the data bus 3 to transmit the first information error-corrected by the decoder 7 to the data bus 3 of the CPU 1.
- the fourth path connecting the ROM 4 and the data bus 3 is switched so that the second information recorded in the CPU 1 can be written.
- the third path is, for example, a path connecting the outputs dD0 to dD7 of the decoder 7 and D0 to D7 of the data bus 3 as shown in FIG.
- the fourth path is a path that connects the outputs fD0 to fD15 of the ROM 4 and D0 to D15 of the data bus 3, for example, as shown in FIG.
- the memory control device is configured to determine the address value during the operation of the CPU 1 and determine the operation of the address line switch 5 and the operation of the data line switch 6. ing.
- the former is, for example, an operation when the CPU 1 operates with an 8-bit data bus width and accesses the ROM 4 with an address at the time of activation (activation address).
- the latter is, for example, an operation when the CPU 1 operates with a 16-bit data bus width and accesses the ROM 4 with an address when writing or the like.
- the CPU 1 When starting up the CPU 1, the CPU 1 operates with an 8-bit data bus width. Then, the CPU 1 outputs a start address unique to the device (CPU 1) and executes access to the ROM 4.
- the LSB of the address at the time of activation (for example, in the case of a 4-digit address XXXX) changes from XXX0 to XXX1, or changes from XXX1 to XXX0, that is, every time the address value is incremented, the ROM 4 is one word (16 bits) must be advanced.
- the address line switch 5 may be configured to detect the address value at the time of activation and connect the LSB (A0) of the address bus and the LSB (fA0) of the ROM 4. As a result, every time A0 of the address bus 2 changes, the ROM 4 advances by one word.
- 16-bit data (fD0 to fD15) is output from the ROM 4.
- the decoder 7 takes 15 bits (fD0 to fD14) out of the 16 bits, decodes 11 bits of information, and converts 8 bits of the 11 bits to D0 to D7 (8 bits) of the data bus 3. Output.
- the data corresponding to the address at the time of activation (data relating to the activation program) is subjected to error correction coding processing and recorded in the ROM 4 as first information. That is, 8-bit data (data relating to the activation program) is recorded in the ROM 4 as 15-bit data (first information).
- the CPU 1 when the CPU 1 operates with an 8-bit data bus width and accesses the ROM 4 with the address at the time of activation, the path of the address line switch 5 and the data line switch 6 is routed.
- the first information can be read and the error-corrected data can be transmitted to the data bus 3. Therefore, even if an error occurs in the data value in the ROM 4, the CPU 1 can be started up normally.
- the CPU 1 When writing to the ROM 4, etc., the CPU 1 operates with a 16-bit data bus width. Then, the CPU 1 outputs an address value for writing and executes access to the ROM 4.
- the address line switch 5 detects this address value and connects the address bus 2 and the address line of the ROM 4 in association with each other as follows. .
- the fD0 to fD15 of the ROM 4 and the D0 to D15 of the data bus 3 are connected.
- the CPU 1 operates with a 16-bit data bus width, for example, the first information encoded by the CPU 1 can be written in the ROM 4.
- the CPU 1 uses the same access method as that of a normal NOR flash ROM at an address when writing or the like. That is, the CPU 1 operates the address bus 2 and a bus control signal (not shown) to access the device (ROM 4) via the data bus 3, but the ROM 4 itself can be accessed as a single bus-connected device. . Therefore, the CPU 1 can perform a write operation and an erase operation prepared in the ROM 4 via the data bus 3.
- the writing operation is an operation in which the CPU 1 writes a write command to the ROM 4 and reads completion of writing from the ROM 4 in order to write data.
- the erasing operation refers to an operation in which the CPU 1 writes an erasing command to the ROM 4 and erases erasing completion from the ROM 4 in order to erase data.
- These operations can be executed by the CPU 1 accessing the ROM 4 with a 16-bit data bus width.
- the address line switch 5 and the data line switch 6 need to perform a switching operation.
- the address line switch 5 and the data line switch 6 are configured to monitor the address signal of the address bus 2 and execute an operation corresponding to this address. When the address is detected, a switching operation as shown in FIG. 2 is executed to realize a write operation or an erase operation.
- the Hamming encoding of the activation data written in the ROM 4 has been described on the assumption that the CPU 1 performs encoding calculation.
- the present invention is not limited to this.
- dedicated hardware may be incorporated into the memory control device so as to execute Hamming encoding. In such a configuration, the software can be simplified.
- a mode in which the Hamming encoding of data is performed by an information processing system other than the memory control device, and the encoded data is written in the ROM 4 may be employed. In this way, the load on the CPU 1 can be reduced.
- a Hamming code is used as an error correction code method
- the present invention is not limited to a Hamming code, and an error correction code other than a Hamming code can also be employed.
- the data before the error correction coding process is not limited to the data related to the activation program, and any data may be used as long as it is considered that the decoder 7 needs to correct the error.
- the CPU 1 is accessed with an 8-bit data bus width when reading the first information, and the CPU 1 is accessed with a 16-bit data bus width when writing the second information.
- the data bus width is not limited to this.
- the memory control device may be configured as follows.
- the decoder 7 when a predetermined register is prepared inside the decoder 7 and the decoder 7 performs error correction, error occurrence information is stored in this register, and the CPU 1 detects this error occurrence information via the register. . Further, the CPU 1 specifies a recording area in which an error has occurred in the ROM 4, reads data in this recording area, encodes this data, and then writes the data in the corresponding location (recording area in which the error has occurred).
- the decoder 7 is configured to hold the error detection result at the time of decoding as the decoder internal information.
- the data is written in the ROM 4 in a state where the error can be corrected. That is, according to the memory control device according to the present embodiment, it is possible to suppress the occurrence of an error that cannot be corrected by returning to a state where the error can be corrected before many bit errors occur.
- the memory control device records the CPU 1, the first information that has been subjected to the error correction coding process, and the second information that has not been subjected to the error correction coding process.
- ROM 4 memory
- ROM 4 memory
- An address line switch 5 for switching between a second path connecting the address bus 2 and the ROM 4 so that the second information recorded in the memory can be erased, written, and read.
- a decoder 7 that performs error correction on the first information recorded in the ROM 4, removes redundant bits from the corrected information, and decodes the information before error correction coding processing, and the CPU 1 outputs the information.
- a third path for connecting the decoder 7 and the data bus 3 to detect the received address and transmitting the information decoded by the decoder 7 to the data bus 3 of the CPU 1;
- a data line switch 6 (second switch) for switching between the ROM 4 and the data bus 3 so that the information of 2 can be erased, written and read. Therefore, when the first address (for example, the activation address) indicating that the first information is read is output from the CPU 1, the address line switch 5 connects the address bus 2 and the ROM 4 via the first path.
- the data line switch 6 can read out the error-corrected data by connecting the decoder 7 and the data bus 3 through the third path. Furthermore, when the second address indicating that the second information is written or the like is output from the CPU 1, the address line switch 5 connects the address bus 2 and the ROM 4 through the second path, and the data The line switch 6 can perform an erasing operation and a writing operation of data in the ROM 4 by connecting the decoder 7 and the data bus 3 through the fourth path.
- the CPU when the power is turned on, the CPU reads the activation program stored in the ROM. Furthermore, the OS loader is read from a storage device (for example, a hard disk or a flash ROM) capable of writing data and executed based on the startup program. As described above, the conventional memory control device is a mode in which the ROM for storing the startup data and the storage device capable of writing data are used in combination. Since the memory control device according to this embodiment includes the address line switch 5 and the data line switch 6, the CPU 1 can be stably started using only the ROM 4 and recorded in the ROM 4. Data can be written.
- a storage device for example, a hard disk or a flash ROM
- the memory control device can be applied to a memory control device that performs various types of control by the CPU 1.
- a memory control device that performs various types of control by the CPU 1.
- the following effects can be obtained.
- FIG. 3 is a diagram for explaining the effect when the memory control device according to the embodiment of the present invention is incorporated in train-mounted equipment.
- the train organization shown in FIG. 3 is composed of a plurality of vehicles, and includes, as an example, both leading vehicles 10a and 10b, and vehicles 11a and vehicles 11b other than the leading vehicles.
- Recent trains are equipped with a train information management device that controls and monitors the operating state of service equipment and the like for the purpose of reducing the load on crew members and improving service to passengers.
- the vehicle 10a and the vehicle 10b are mounted with an electrical component 20, an electrical component 21, and an electrical component 22, and the electrical component 20 is, for example, a central station that constitutes a train information management device.
- the terminal device constituting the train information management device.
- the electrical product 21 is, for example, a monitor display installed in a cab or the like.
- an electrical product 30 and an electrical product 31 are mounted on the vehicle 11a and the vehicle 11b.
- the electrical product 30 is, for example, the terminal device described above, and the electrical product 31 is an in-vehicle device (for example, an air conditioner, SIV, VVVF, etc.) connected to the terminal device.
- the electrical product 30 and the electrical product 31 are connected by an in-vehicle transmission line.
- the electrical equipment 20 and the electrical equipment 30 are mutually connected by the transmission line between vehicles.
- the memory control device stabilizes the CPU using a flash ROM without changing the bus control mechanism supported by a generally available CPU (or IC), for example. It is possible to automatically start and write data.
- the memory control device shows an example of the contents of the present invention, and can be combined with another known technique and does not depart from the gist of the present invention. Of course, it is possible to change the configuration such as omitting a part.
- the present invention can be applied to a memory control device that performs various types of control by a CPU.
- the CPU can be stably started using a flash ROM, and data can be written. It is useful as a possible invention.
Abstract
Description
図1は、本発明の実施の形態にかかるメモリ制御装置の構成図であって、CPU1起動時の動作を説明するための図である。また、図2は、本発明の実施の形態にかかるメモリ制御装置の構成図であって、フラッシュROM4の書き込み操作あるいは消去操作をするときの動作を説明するための図である。
A0-fA0
A1-fA1
An-fAn(n=0、1、2・・・9)
D0-dD0
D1-dD1
Dn-dDn(n=0、1、2・・・7)
A1-fA0
A2-fA1
An-fA(n-1)(n=0、1、2・・・9)
D0-fD0
D1-fD1
Dn-fDn(n=0、1、2・・・15)
2 アドレスバス
3 データバス
4 フラッシュROM(メモリ)
5 アドレス線切替器(第1の切替器)
6 データ線切替器(第2の切替器)
7 復号器
10a、10b、11a、11b 鉄道車両
20、21、22、30、31 電機品
Claims (7)
- CPUと、
誤り訂正符号化処理がなされた第1の情報と誤り訂正符号化処理がなされていない第2の情報とを記録し、電気的に書き換え可能な不揮発性のメモリと、
前記CPUから出力されたアドレスを検知して、前記メモリに記録された第1の情報をCPUが読み取り可能とすべくアドレスバスと前記メモリとを接続する第1の経路と、前記メモリに記録された前記第2の情報を消去、書き込み、および読み取り可能にすべく前記アドレスバスと前記メモリとを接続する第2の経路と、を切り替える第1の切替器と、
前記メモリに記録された前記第1の情報の誤り訂正を行い、訂正後の情報の中から冗長ビットを除いて誤り訂正符号化処理前の情報を復号する復号器と、
前記CPUから出力されたアドレスを検知して、前記復号器にて復号された情報を前記CPUのデータバスに伝達すべく前記復号器と前記データバスとを接続する第3の経路と、前記メモリに記録された前記第2の情報を消去、書き込み、および読み取り可能にすべく前記メモリと前記データバスとを接続する第4の経路と、を切り替える第2の切替器と、
を備えたことを特徴とするメモリ制御装置。 - 前記CPUから出力されたアドレスが、前記第1の情報を読み出すことを示す第1のアドレスであるとき、
前記第1の切替器は、前記第1のアドレスを検知して、前記第1の経路にて前記アドレスバスと前記メモリとを接続し、
前記第2の切替器は、前記第1のアドレスを検知して、前記第3の経路にて前記復号器と前記データバスとを接続し、
前記CPUから出力されたアドレスが、前記第2の情報を消去、書き込み、および読み取ることを示す第2のアドレスであるとき、
前記第1の切替器は、前記第2のアドレスを検知して、前記第2の経路にて前記アドレスバスと前記メモリとを接続し、
前記第2の切替器は、前記第2のアドレスを検知して、前記第4の経路にて前記復号器と前記データバスとを接続することを特徴とする請求項1に記載のメモリ制御装置。 - 前記CPUは、誤り訂正が必要な情報を、ソフトウェア処理にて誤り訂正符号化し、
前記メモリには、この誤り訂正符号化処理がなされた情報が前記第1の情報として記録されていることを特徴とする請求項1に記載のメモリ制御装置。 - 前記復号器は、誤り訂正を実施したときに誤り発生情報を保持し、
前記CPUは、誤り発生情報に基づいて、前記メモリ上の誤りが発生した記録領域を特定すると共に、この記録領域から読み出された情報の誤り訂正符号化処理を実行し、誤り訂正符号化処理がなされた情報を前記記録領域に上書きすることを特徴とする請求項1に記載のメモリ制御装置。 - 前記第1の情報は、前記CPUの起動プログラムデータであることを特徴とする請求項1に記載のメモリ制御装置。
- 誤り訂正符号化処理がなされた第1の情報と誤り訂正符号化処理がなされていない第2の情報とを記録し、電気的に書き換え可能な不揮発性のメモリの制御方法であって、
CPUから出力されたアドレスが、前記第1の情報を読み出すことを示す第1のアドレスであるとき、
前記メモリに記録された前記第1の情報をCPUが読み取り可能とすべくアドレスバスと前記メモリとを接続する第1の経路と、前記メモリに記録された前記第2の情報を消去、書き込み、および読み取り可能にすべく前記アドレスバスと前記メモリとを接続する第2の経路と、を切り替える第1の切替器は、前記第1のアドレスを検知して前記第1の経路にて前記アドレスバスと前記メモリとを接続するステップと、
前記メモリに記録された前記第1の情報の誤り訂正を行い、訂正後の情報の中から冗長ビットを除いて誤り訂正符号化処理前の情報を復号する復号器にて復号された情報を、前記CPUのデータバスに伝達すべく前記復号器と前記データバスとを接続する第3の経路と、前記メモリに記録された前記第2の情報を消去、書き込み、および読み取り可能にすべく前記メモリと前記データバスとを接続する第4の経路と、を切り替える第2の切替器は、前記第1のアドレスを検知して前記第3の経路にて復号器とデータバスとを接続するステップと、
を特徴とするメモリ制御方法。 - 前記CPUから出力されたアドレスが、前記第2の情報を消去、書き込み、および読み取ることを示す第2のアドレスであるとき、
前記第1の切替器は、前記第2のアドレスを検知して、前記第2の経路にて前記アドレスバスと前記メモリとを接続するステップと、
前記第2の切替器は、前記第2のアドレスを検知して、前記第4の経路にて前記復号器と前記データバスとを接続するステップとを有することを特徴とする請求項6に記載のメモリ制御方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10856945.0A EP2615556B1 (en) | 2010-09-06 | 2010-09-06 | Memory control device and memory control method |
CN201080068952.7A CN103069399B (zh) | 2010-09-06 | 2010-09-06 | 存储器控制装置及存储器控制方法 |
PCT/JP2010/065255 WO2012032595A1 (ja) | 2010-09-06 | 2010-09-06 | メモリ制御装置およびメモリ制御方法 |
JP2011532382A JP4841709B1 (ja) | 2010-09-06 | 2010-09-06 | メモリ制御装置およびメモリ制御方法 |
US13/820,681 US9135107B2 (en) | 2010-09-06 | 2010-09-06 | Memory control device and memory control method |
SG2013016340A SG188410A1 (en) | 2010-09-06 | 2010-09-06 | Memory control device and memory control method |
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US (1) | US9135107B2 (ja) |
EP (1) | EP2615556B1 (ja) |
JP (1) | JP4841709B1 (ja) |
CN (1) | CN103069399B (ja) |
SG (1) | SG188410A1 (ja) |
WO (1) | WO2012032595A1 (ja) |
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KR102466239B1 (ko) * | 2016-04-05 | 2022-11-14 | 에스케이하이닉스 주식회사 | 메모리 컨트롤러를 포함하는 메모리 시스템 및 그의 동작 방법 |
KR20190029316A (ko) * | 2017-09-12 | 2019-03-20 | 에스케이하이닉스 주식회사 | 마이크로 컨트롤러, 이를 포함하는 메모리 시스템 및 이의 동작방법 |
CN109726057B (zh) * | 2018-11-19 | 2022-07-22 | 浙江众合科技股份有限公司 | 一种cpu安全系统并行总线故障实时动态检测方法 |
CN111736878B (zh) * | 2020-08-10 | 2020-12-08 | 广州汽车集团股份有限公司 | 一种对cpu连接ddr芯片的数据线异常进行定位的方法及系统 |
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WO2009125470A1 (ja) * | 2008-04-07 | 2009-10-15 | 三菱電機株式会社 | 列車用通信中継装置、および列車用通信中継方法 |
JP2010152703A (ja) * | 2008-12-25 | 2010-07-08 | Sony Corp | 不揮発性記憶装置、情報記録システム、及び情報記録方法 |
JP2010262640A (ja) * | 2009-04-30 | 2010-11-18 | Internatl Business Mach Corp <Ibm> | 不揮発性メモリの適応型エンデュランス・コーディング方法及びシステム |
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JPH10111839A (ja) * | 1996-10-04 | 1998-04-28 | Fujitsu Ltd | 記憶回路モジュール |
EP1122645A1 (en) * | 1998-09-14 | 2001-08-08 | Fujitsu Limited | Method of diagnosing a memory failure and recovering data, and a memory device using this method |
TWI254848B (en) * | 2004-11-16 | 2006-05-11 | Via Tech Inc | Method and related apparatus for performing error checking-correcting |
JP4235624B2 (ja) * | 2005-05-27 | 2009-03-11 | Tdk株式会社 | メモリコントローラ、フラッシュメモリシステム及びフラッシュメモリの制御方法 |
JP2010146226A (ja) * | 2008-12-18 | 2010-07-01 | Oki Data Corp | 情報処理装置 |
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WO2009125470A1 (ja) * | 2008-04-07 | 2009-10-15 | 三菱電機株式会社 | 列車用通信中継装置、および列車用通信中継方法 |
JP2010152703A (ja) * | 2008-12-25 | 2010-07-08 | Sony Corp | 不揮発性記憶装置、情報記録システム、及び情報記録方法 |
JP2010262640A (ja) * | 2009-04-30 | 2010-11-18 | Internatl Business Mach Corp <Ibm> | 不揮発性メモリの適応型エンデュランス・コーディング方法及びシステム |
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Also Published As
Publication number | Publication date |
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US9135107B2 (en) | 2015-09-15 |
EP2615556B1 (en) | 2015-07-29 |
SG188410A1 (en) | 2013-04-30 |
EP2615556A4 (en) | 2014-05-21 |
JPWO2012032595A1 (ja) | 2013-12-12 |
CN103069399A (zh) | 2013-04-24 |
CN103069399B (zh) | 2015-07-29 |
EP2615556A1 (en) | 2013-07-17 |
JP4841709B1 (ja) | 2011-12-21 |
US20130173992A1 (en) | 2013-07-04 |
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