WO2020107522A1 - 防止代码被改写的方法及存储器 - Google Patents
防止代码被改写的方法及存储器 Download PDFInfo
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- WO2020107522A1 WO2020107522A1 PCT/CN2018/120041 CN2018120041W WO2020107522A1 WO 2020107522 A1 WO2020107522 A1 WO 2020107522A1 CN 2018120041 W CN2018120041 W CN 2018120041W WO 2020107522 A1 WO2020107522 A1 WO 2020107522A1
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- control signal
- current control
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- potential
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/062—Securing storage systems
- G06F3/0622—Securing storage systems in relation to access
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
Definitions
- the present application relates to the field of data storage technology, and more specifically, to a method and memory for preventing code from being rewritten.
- TCON Timer Control Register, timing controller
- TCON peripheral device EEPROM Electrically, Erasable, Programmable, read only, memory
- the control TCON read and write is controlled by the voltage control signal, the read operation is performed when the voltage control signal is high potential, and the write operation is performed when the voltage control signal is low potential.
- Code writing is generally completed in PCBA (Printed Circuit Board Assembly) after the completion of printing. In the panel factory, after the bonding is completed, a power-on test is required. At this time, because the voltage control signal is high, a read operation is performed.
- a method for preventing code from being rewritten is applied to a memory, and the memory includes a first control unit, a second control unit, a latch, and a register.
- the method includes:
- the first control unit sends the current control signal to the latch
- the second control unit controls the latch to send the current control signal to the register to perform a write operation.
- the method further includes:
- the first control unit sends the current control signal to the register to complete the read operation.
- the step of detecting the type of read and write operation of the current control signal sent by the timing controller through the first control unit includes:
- the current control signal is a low potential, it is determined that the current control signal is a write operation signal.
- the step of determining the potential of the current control signal by the first control unit includes:
- the step of detecting the type of read and write operation of the current control signal sent by the timing controller through the first control unit further includes:
- the current control signal has a high potential, it is determined that the current control signal is a read operation signal.
- the second control unit controls the latch to send the current control signal to Before the step of performing the write operation on the register, the method further includes:
- the first control unit is a single chip microcomputer.
- the second control unit is a controller.
- a method for preventing code from being rewritten is applied to a memory, and the memory includes a first control unit, a second control unit, a latch, and a register.
- the method includes:
- the first control unit sends the current control signal to the register to complete the read operation
- the first control unit sends the current control signal to the latch
- the second control unit controls the latch to send the current control signal to the register to perform a write operation
- the step of detecting the type of read and write operation of the current control signal sent by the timing controller through the first control unit includes:
- the current control signal has a high potential, it is determined that the current control signal is a write operation signal.
- the step of detecting the type of read and write operation of the current control signal sent by the timing controller through the first control unit further includes:
- the current control signal is a low potential, it is determined that the current control signal is a read operation signal.
- the step of determining the potential of the current control signal by the first control unit includes:
- a memory including:
- the first control unit is configured to receive the current control signal sent by the timing controller and determine the type of read and write operations of the current control signal;
- a first control switch one end of the first control switch is electrically connected to the timing controller
- a second control switch one end of the second control switch is electrically connected to the timing controller
- a latch electrically connected to the other end of the first control switch
- the second control unit is electrically connected to the latch and used to determine whether the sum check code of the current control signal in the latch is the same as the preset sum check code;
- a third control switch one end of the third control switch is electrically connected to the latch
- the register is electrically connected to the other end of the second control switch and the other end of the third control switch, respectively;
- the first control unit is also used to control the opening and closing of the first control switch and the opening and closing of the second control switch according to the type of read and write operations of the current control signal; the second control The unit is also used to control the opening and closing of the third control switch.
- the above method for preventing the code from being rewritten detects the type of read and write operations of the current control signal sent by the timing controller through the first control unit. If the current control signal is a write operation signal, the first control unit sends the current control signal to the latch. The second control unit determines whether the sum check code of the current control signal in the latch is the same as a preset sum check code. If the sum check code of the current control signal is the same as the preset sum check code, the second control unit controls the latch to send the current control signal to the register, thereby performing a write operation.
- the second control unit detects and determines whether the sum check code of the current control signal is the same as the preset sum check code, and the second control unit controls the latch only if they are the same
- the controller sends the current control signal to the register to perform a write operation. The risk of rewriting the original code in the memory is greatly reduced, thereby improving production yield and increasing product reliability.
- FIG. 1 is a flowchart of a method for preventing code from being rewritten according to an embodiment of the application
- FIG. 2 is a schematic structural diagram of a memory provided by an embodiment of the present application.
- an embodiment of the present application provides a method for preventing code from being rewritten, which is applied to the memory 100, and the memory 100 includes a first control unit 110, a second control unit 120, a latch 130 Register 140, the method includes:
- the first control unit 110 detects the read and write operation type of the current control signal sent by the timing controller 200.
- the specific structure of the first control unit 110 is not specifically limited, as long as the type of the read-write operation of the current control signal sent by the timing controller 200 can be detected.
- the first control unit 110 may be an MCU (Microcontroller Unit, single chip microcomputer) 101.
- the first control unit 110 may be a first processor. The specific structure of the first control unit 110 can be selected according to actual needs.
- the read-write operation type may include a read operation type and a write operation type.
- the type of read operation means that only the code in the register 140 can be read.
- the type of write operation means that the code in the register 140 can be rewritten.
- the manner in which the first control unit 110 sends the current control signal to the latch 130 is not limited, as long as the latch 130 can receive all the signals sent by the first control unit 110. Just describe the current control signal.
- the first control unit 110 may send the current control signal to the latch 130 by wired data transmission.
- the first control unit 110 may send the current control signal to the latch 130 by wired data transmission.
- the first control unit 110 may also send the current control signal to the latch 130 by wireless data transmission.
- the second control unit 120 determines whether the sum check code of the current control signal in the latch 130 is the same as a preset sum check code.
- the specific structure of the second control unit 120 is not specifically limited, as long as it can be determined whether the sum check code of the current control signal in the latch 130 is the same as the preset sum check code .
- the second control unit 120 may be a first MCU (Microcontroller Unit, single chip microcomputer).
- the second control unit 120 may be a controller 121.
- the specific structure of the second control unit 120 can be selected according to actual needs.
- the preset sum check code is stored in the second control unit 120 in advance by the drive circuit.
- Each code (code) corresponds to a sum check code. Only if the sum check code of the current control signal in the latch 130 is the same as the preset sum check code, the second control unit 120 will perform the next control operation.
- the second control unit 120 controls the latch 130 to send the current control signal to the register 140 in any way, as long as the register 140 can receive the current control signal. .
- the second control unit 120 controls the latch 130 to send the current control signal to the register 140 by wired transmission.
- the second control unit 120 controls the latch 130 to send the current control signal to the register 140 through wireless transmission.
- the first control unit 110 in the memory 100 is connected to the timing controller 200 and the latch 130 respectively.
- the second control unit 120 is communicatively connected to the latch 130 and the register 140, respectively.
- the specific communication connection method can adopt the traditional communication connection method, and no specific description will be made here.
- the second control unit 120 detects and judges whether the sum check code of the current control signal and the preset sum check code are the same, and the second control unit 120 will only be the same
- the latch 130 is controlled to send the current control signal to the register 140 to perform a write operation. This embodiment can greatly reduce the risk that the original code in the memory 100 is rewritten, thereby improving production yield and increasing product reliability.
- the method further includes: If the current control signal is a read operation signal, the first control unit 110 sends the current control signal to the register 140 to complete the read operation.
- the manner in which the first control unit 110 sends the current control signal to the register 140 is not limited, as long as the register 140 can receive the current control signal.
- the first control unit 110 may send the current control signal to the register 140 through a wire.
- the first control unit 110 may send the current control signal to the register 140 by wireless data transmission.
- the wireless data transmission method may be WIFI, Bluetooth, or the like.
- the step of detecting the read and write operation type of the current control signal sent by the timing controller 200 through the first control unit 110 includes: first, acquiring the timing control through the first control unit 110 The current control signal sent by the controller 200. Secondly, the first control unit 110 determines whether the potential of the current control signal is high or low. Finally, if the current control signal has a low potential, it is determined that the current control signal is a write operation signal.
- the manner in which the first control unit 110 acquires the current control signal sent by the timing controller 200 is not limited, as long as it is ensured that the first control unit 110 can acquire the current control signal.
- the first control unit 110 may obtain the current control signal sent by the timing controller 200 by wired data transmission.
- the first control unit 110 may obtain the current control signal sent by the timing controller 200 through wireless data transmission.
- the first control unit 110 may determine the level of the current control signal based on the first preset reference voltage.
- the specific value of the first preset reference voltage can be set according to actual needs. If the potential of the current control signal is low relative to the first preset reference voltage, it is determined that the current control signal is a write operation signal. If the potential of the current control signal is high relative to the first preset reference voltage, it is determined that the current control signal is a read operation signal.
- the step of determining the potential of the current control signal by the first control unit 110 includes: using the first control unit 110 to compare the potential of the current control signal with a preset reference potential Compare. It is judged whether the potential of the current control signal is higher than the potential of the preset reference potential.
- the preset reference potential can be set according to actual needs, and no specific numerical value is defined here. In one embodiment, if the potential of the current control signal is high relative to the preset reference potential, it is determined that the current control signal is a read operation signal. If the potential of the pre-control signal is low relative to the preset reference potential, it is determined that the current control signal is a write operation signal.
- the method further includes: if the sum check code of the current control signal is different from the preset sum check code, returning to the first pass
- the control unit 110 detects the steps of the read and write operation type of the current control signal sent by the timing controller 200.
- the current control signal sent by the timing controller 200 detected by the first control unit 110 is returned The steps of the type of read and write operations. That is, only when the sum check code of the current control signal is the same as the preset sum check code, the original code in the memory 100 will be rewritten. Through this detection and verification method, the memory 100 is greatly reduced The risk of rewriting the original code within, increases product reliability.
- the memory 100 includes a first control unit 110, a second control unit 120, a latch 130, and a register 140.
- the method includes: first, the first control unit 110 detects the type of read and write operations of the current control signal sent by the timing controller 200. If the current control signal is a read operation signal, the first control unit 110 sends the current control signal to the register 140 to complete the read operation. Secondly, if the current control signal is a write operation signal, the first control unit 110 sends the current control signal to the latch 130. Then, the second control unit 120 determines whether the sum check code of the current control signal in the latch 130 is the same as the preset sum check code.
- the second control unit 120 controls the latch 130 to send the current control signal to the register 140, Thus write operation.
- the read-write operation type of the current control signal sent by the timing controller 200 detected by the first control unit 110 is returned A step of.
- the specific structure of the first control unit 110 is not specifically limited, as long as the type of the read-write operation of the current control signal sent by the timing controller 200 can be detected.
- the first control unit 110 may be an MCU (Microcontroller Unit, single chip microcomputer) 101.
- the first control unit 110 may be a first processor.
- the specific structure of the first control unit 110 can be selected according to actual needs.
- the manner in which the first control unit 110 sends the current control signal to the latch 130 may adopt the manner described in the foregoing embodiment, and the repeated description will not be repeated here.
- the specific structure of the second control unit 120 is not specifically limited, as long as it can be determined whether the sum check code of the current control signal in the latch 130 is the same as the preset sum check code .
- the second control unit 120 may be a first MCU (Microcontroller Unit, single chip microcomputer).
- the second control unit 120 may be a controller 121.
- the specific structure of the second control unit 120 can be selected according to actual needs.
- the preset sum check code is stored in the second control unit 120 in advance by a driving circuit.
- Each code (code) corresponds to a sum check code. Only if the sum check code of the current control signal in the latch 130 is the same as the preset sum check code, the second control unit 120 will perform the next control operation.
- the manner in which the second control unit 120 controls the latch 130 to send the current control signal to the register 140 adopts the manner described in the foregoing embodiment, and the repeated description will not be repeated here.
- the first control unit 110 in the memory 100 is connected to the timing controller 200 and the latch 130 respectively.
- the second control unit 120 is communicatively connected to the latch 130 and the register 140, respectively.
- the specific communication connection method can adopt the traditional communication connection method, and no specific description will be made here.
- the step of detecting the read and write operation type of the current control signal sent by the timing controller 200 through the first control unit 110 includes: acquiring the timing controller 200 through the first control unit 110 The current control signal sent.
- the first control unit 110 determines the potential of the current control signal. If the current control signal has a high potential, it is determined that the current control signal is a write operation signal. If the potential of the current control signal is a low potential, it is determined that the current control signal is a read operation signal.
- the step of determining the potential of the current control signal by the first control unit 110 includes: using the first control unit 110 to compare the potential of the current control signal with a preset reference potential Compare; determine the potential of the current control signal relative to the preset reference potential.
- the preset reference potential can be set according to actual needs, and no specific numerical value is defined here. In one embodiment, if the potential of the current control signal is high relative to the preset reference potential, it is determined that the current control signal is a read operation signal. If the potential of the front control signal is a low potential relative to the preset reference potential, it is determined that the current control signal is a write operation signal.
- the second control unit 120 detects and judges whether the sum check code of the current control signal is the same as the preset sum check code, and only the two are the same. The second control unit 120 Only then can the latch 130 be controlled to send the current control signal to the register 140 to perform a write operation.
- This application can greatly reduce the risk that the original code in the memory 100 is rewritten, thereby improving production yield and increasing product reliability.
- An embodiment of the present application provides a memory 100 including a first control unit 110, a first control switch 111, a second control switch 112, a latch 130, a second control unit 120, a third control switch 113, and a register 140.
- the first control unit 110 is used to receive the current control signal sent by the timing controller 200 and determine the type of read and write operations of the current control signal.
- One end of the first control switch 111 is electrically connected to the timing controller 200.
- One end of the second control switch 112 is electrically connected to the timing controller 200.
- the latch 130 is electrically connected to the other end of the first control switch 111.
- the second control unit 120 is electrically connected to the latch 130.
- the second control unit 120 is used to determine whether the sum check code of the current control signal in the latch 130 is the same as the preset sum check code.
- One end of the third control switch 113 is electrically connected to the latch 130.
- the register 140 is electrically connected to the other end of the second control switch 112 and the other end of the third control switch 113, respectively.
- the first control unit 110 is also used to control the opening and closing of the first control switch 111 and the opening and closing of the second control switch 112 according to the type of read and write operations of the current control signal.
- the second control unit 120 is also used to control the third control switch 113 to turn on and off.
- the specific structure of the first control unit 110 is not specifically limited, as long as the type of the read-write operation of the current control signal sent by the timing controller 200 can be detected.
- the first control unit 110 may be an MCU (Microcontroller Unit, single chip microcomputer) 101.
- the first control unit 110 may be a first processor. The specific structure of the first control unit 110 can be selected according to actual needs.
- the specific structure of the second control unit 120 is not specifically limited, as long as it can be determined whether the sum check code of the current control signal in the latch 130 is the same as the preset sum check code .
- the second control unit 120 may be a first MCU (Microcontroller Unit, single chip microcomputer).
- the second control unit 120 may be a controller 121.
- the specific structure of the second control unit 120 can be selected according to actual needs.
- the specific structure of the first control switch 111 is not specifically limited, as long as the first control unit 110 can be controlled to turn on and off the first control switch 111.
- the first control switch 111 may be a first relay switch 114.
- the first control switch 111 may be a MOS (Field Effect Transistor) switch.
- the specific structure of the second control switch 112 is not specifically limited, as long as the first control unit 110 can control the second control switch 112 to be turned on and off.
- the second control switch 112 may be a second relay switch 115.
- the second control switch 112 may be a MOS (Field Effect Transistor) switch.
- the specific structure of the third control switch 113 is not specifically limited, as long as the second control unit 120 can ensure that the third control switch 113 can be turned on and off.
- the third control switch 113 may be a third relay switch 116.
- the third control switch 113 may be a MOS (Field Effect Transistor) switch.
- the first control unit 110 the first control switch 111, the second control switch 112, the latch 130, the second control unit 120, and the third control
- the cooperation between the switches 113 can prevent the original code in the register 140 in the memory 100 from being rewritten, which greatly improves the reliability of the product.
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Abstract
Description
Claims (20)
- 一种防止代码被改写的方法,其中,应用于存储器,所述存储器包括第一控制单元、第二控制单元、锁存器和寄存器,所述方法包括:通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型;若所述当前控制信号为写操作信号,则所述第一控制单元将所述当前控制信号发送至所述锁存器;通过所述第二控制单元判断所述锁存器内的所述当前控制信号的总和检验码是否与预设总和检验码相同;若所述当前控制信号的总和检验码与所述预设总和检验码相同,则所述第二控制单元控制所述锁存器将所述当前控制信号发送至所述寄存器,从而进行写操作。
- 根据权利要求1所述的防止代码被改写的方法,其中,所述若所述当前控制信号为写操作,则所述第一控制单元将所述当前控制信号发送至所述锁存器的步骤之前,所述方法还包括:若所述当前控制信号为读操作信号,则所述第一控制单元将所述当前控制信号发送至所述寄存器,以完成读操作。
- 根据权利要求1所述的防止代码被改写的方法,其中,所述通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型的步骤包括:通过所述第一控制单元获取所述时序控制器发送的所述当前控制信号;通过所述第一控制单元判断所述当前控制信号的电位高低;若所述当前控制信号的电位为低电位,则判断所述当前控制信号为写操作信号。
- 根据权利要求3所述的防止代码被改写的方法,其中,所述通过所述第 一控制单元判断所述当前控制信号的电位高低的步骤包括:通过所述第一控制单元将所述当前控制信号的电位与预设基准电位进行比较;判断所述当前控制信号的电位相对于所述预设基准电位的电位高低。
- 根据权利要求3所述的防止代码被改写的方法,其中,所述通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型的步骤还包括:若所述当前控制信号的电位为高电位,则判断所述当前控制信号为读操作信号。
- 根据权利要求1所述的防止代码被改写的方法,其中,所述若所述当前控制信号的总和检验码与所述预设总和检验码相同,则所述第二控制单元控制所述锁存器将所述当前控制信号发送至所述寄存器,从而进行写操作的步骤之前,所述方法还包括:若所述当前控制信号的总和检验码与所述预设总和检验码不相同,则返回所述通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型的步骤。
- 根据权利要求1所述的防止代码被改写的方法,其中,所述第一控制单元为单片机。
- 根据权利要求1所述的防止代码被改写的方法,其中,所述第二控制单元为控制器。
- 一种防止代码被改写的方法,其中,应用于存储器,所述存储器包括第一控制单元、第二控制单元、锁存器和寄存器,所述方法包括:通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型;若所述当前控制信号为读操作信号,则所述第一控制单元将所述当前控制信号发送至所述寄存器,以完成读操作;若所述当前控制信号为写操作信号,则所述第一控制单元将所述当前控制信号发送至所述锁存器;通过所述第二控制单元判断所述锁存器内的所述当前控制信号的总和检验码是否与预设总和检验码相同;若所述当前控制信号的总和检验码与所述预设总和检验码相同,则所述第二控制单元控制所述锁存器将所述当前控制信号发送至所述寄存器,从而进行写操作;若所述当前控制信号的总和检验码与所述预设总和检验码不相同,则返回所述通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型的步骤。
- 根据权利要求9所述的防止代码被改写的方法,其中,所述通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型的步骤包括:通过所述第一控制单元获取所述时序控制器发送的所述当前控制信号;通过所述第一控制单元判断所述当前控制信号的电位高低;若所述当前控制信号的电位为高电位,则判断所述当前控制信号为写操作信号。
- 根据权利要求10所述的防止代码被改写的方法,其中,所述通过所述第一控制单元检测时序控制器发送的当前控制信号的读写操作类型的步骤还包括:若所述当前控制信号的电位为低电位,则判断所述当前控制信号为读操作信号。
- 根据权利要求10所述的防止代码被改写的方法,其中,所述通过所述第一控制单元判断所述当前控制信号的电位高低的步骤包括:通过所述第一控制单元将所述当前控制信号的电位与预设基准电位进行比较;判断所述当前控制信号的电位相对于所述预设基准电位的电位高低。
- 根据权利要求9所述的防止代码被改写的方法,其中,所述第一控制单元为单片机。
- 根据权利要求9所述的防止代码被改写的方法,其中,所述第二控制单元为控制器。
- 一种存储器,其中,包括:第一控制单元,用于接收时序控制器发送的当前控制信号,并判断所述当前控制信号的读写操作类型;第一控制开关,所述第一控制开关的一端与所述时序控制器电连接;第二控制开关,所述第二控制开关的一端与所述时序控制器电连接;锁存器,与所述第一控制开关的另一端电连接;第二控制单元,与所述锁存器电连接,用于判断所述锁存器内的所述当前控制信号的总和检验码是否与预设总和检验码相同;第三控制开关,所述第三控制开关的一端与所述锁存器电连接;寄存器,分别与所述第二控制开关的另一端和所述第三控制开关的另一端电连接;所述第一控制单元还用于依据所述当前控制信号的读写操作类型控制所述第一控制开关的开启与断开和所述第二控制开关的开启与断开;所述第二控制单元还用于控制所述第三控制开关的开启与断开。
- 根据权利要求15所述的存储器,其中,所述第一控制单元为单片机。
- 根据权利要求15所述的存储器,其中,所述第一控制开关为第一继电器开关。
- 根据权利要求15所述的存储器,其中,所述第二控制开关为第二继电器开关。
- 根据权利要求15所述的存储器,其中,所述第二控制单元为控制器。
- 根据权利要求15所述的存储器,其中,所述第三控制开关为第三继电器开关。
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| CN101311870A (zh) * | 2007-05-22 | 2008-11-26 | 英业达股份有限公司 | 内存插槽时钟脉冲的控制方法 |
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| CN103235920A (zh) * | 2013-04-28 | 2013-08-07 | 杭州和利时自动化有限公司 | 一种可编程逻辑器件及其操作权限控制方法 |
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