36results about How to "Prevent rewriting" patented technology

The invention discloses a text hidden method based on Chinese sentence pattern template transformation. The method utilizes the computer system to carry out watermark embedment and extraction on textinformation to hide the text information, comprising the following steps: (1) carrying out pre-treatment on an electronic file; (2) generating watermark information sign and setting a key; (3) carrying out part-of-speech tagging to format-free file generated in step (1) by a part-of-speech tagging module and outputting a part-of-speech tagging string of a sentence; (4) simplifying the part-of-speech tagging string output in the step (3) by a chunk tagging module; (5) loading a template module to select a sentence pattern module; (6) embedding watermark information by a watermark embedment module; (7) outputting the hidden text with embedded watermark; and (8) extracting the watermark information from the hidden text by a watermark extraction module through the key. The text hidden method changes sentence pattern through a template, avoids complex understanding and processing of grammar and semanteme, ensures the carrier text better satisfying grammar and semanteme habit and prevents blindfold rewrite.

The invention provides a gamma correction buffer circuit which comprises a judgment unit and a control unit. According to judgment unit, when a circuit system where the gamma correction buffer circuit is located is powered on, whether digital working voltage of the gamma correction buffer circuit is larger than or equal to threshold value voltage of the gamma correction buffer circuit or nor is judged. According to the control unit, when the digital working voltage is determined to be smaller than the threshold value voltage, an IIC serial bus of the gamma correction buffer circuit is prohibited from being operated, data are not allowed to be written into a storage unit of the gamma correction buffer circuit through the IIC serial bus, and when the digital working voltage is larger than or equal to the threshold value voltage, the control unit controls the IIC serial bus to be allowed to be operated, and the data can be written into the storage unit of the gamma correction buffer circuit through the IIC serial bus. The invention further provides an anti-interference method and a display device. According to the technical scheme, external disturbance can be prevented from affecting the data in a register of the gamma correction buffer circuit, the capacity of resisting the disturbance of a system is enhanced, and stability of the system is improved.

A memory electromagnetic interference protection circuit and vehicle electronic equipment are provided; in the daily work, a protection unit (2) outputs a switching signal to control the memory (1) in the write-protected state; when the contents of the memory (1) need to be updated online, the protection unit (2) outputs the switching signal to control the memory (1) in a non-write-protected state, thus preventing the contents of the memory (1) to be overwritten by the serious electromagnetic interference environment, and causing memory content chaos.

A method for protecting code section used in MIPS system includes making addresses of code section and data section be both placed in region being able to be converted by internal memory management unit in MIPS system when host software is compiled and generated, making code section and data section be placed in said region in program address space of host software when host software is started up. The protection device for realizing said method is also disclosed.

The invention discloses a communication architecture of a display panel. By arranging a time delay circuit, the write-in protection signal can delay the opening of the bus switch after flowing throughthe delay circuit until the process of checking codes in the power supply management integrated circuit is finished, the bus switch cannot be opened when the time sequence controller is checked, andthe checked communication content of the memory is prevented from being rewritten.

The invention provides a screen displaying method and a mobile terminal. The screen displaying method is applied to the mobile terminal. The mobile terminal comprises a first display screen and a second display screen. The method comprises the steps that information to be displayed on the second display screen of the mobile phone is acquired; according to a second drawing mechanism, a display interface of the information to be displayed is drawn, wherein the second drawing mechanism and a first drawing mechanism which draws a display interface of the first display screen are different drawingmechanisms; the display interface is displayed on the second display screen. According to the technical scheme, a secondary screen of the mobile terminal is separately displayed and is independent ofa main screen, display of the secondary screen is controlled by adopting a mode which is different from a mode of the main screen, and rewriting for a system layer of the mobile terminal is avoided, and different display of the main screen and the secondary screen is achieved.

The embodiment of the invention discloses a read-write control method and apparatus of an ultrahigh frequency electronic tag, and a read-write device. The method comprises the following steps: performing encryption operation on a random number according to a preset encryption algorithm to generate a random password; receiving a third password calculated by upper computer software based on the random number, and a fourth password calculated by an encryption module based on the random number; respectively judging whether a random password is consistent with the third password and the fourth password; and if the random password is inconsistent with the third password, and / or random password is inconsistent with the fourth password, feeding back an authentication failure signal to the upper computer software, and controlling the read-write device to enter a standby state. Through the above manner, the embodiment of the invention can prevent the data in the electronic tag from being rewritten by unauthorized software or an unauthorized device, thereby ensuring the security of the data.

The invention discloses a memory write protection circuit and a display device. The memory write protection circuit comprises: a data write trigger end, wherein the data write trigger end is connectedwith a write protection pin of the memory and configured to receive a first level signal for controlling the memory to enter a write state; a write protection control circuit connected to the write protection pin of the memory and configured to provide a second level signal limiting the memory from being written with data to the write protection pin of the memory, wherein the polarity of the second level signal is opposite to that of the first level signal; an interference signal absorbing circuit connected to the data writing trigger terminal and configured to detect a level signal receivedby the data writing trigger terminal when the memory is in normal operation, and absorb the first level signal when the data writing trigger terminal is detected to receive the first level signal. Theinvention can effectively prevent the software data of the memory from being overwritten.

The invention discloses a data reading method of a memory, a display device and a computer-readable storage medium. The display device includes: a memory including a first storage area and a second storage area, the first storage area is electrically connected to a timing controller, and the memory The data reading method comprises the steps of: setting preset storage data according to the storage data stored in the first storage area and the second storage area; obtaining the logical address sent by the timing controller; and matching the obtained logical address sent by the timing controller with When the stored logical addresses are the same, compare the storage data in the first storage area with the preset storage data; when the storage data in the two are inconsistent, assign the storage data stored in the second storage area to the first storage area, and trigger The timing controller reads stored data in the first storage area. The invention solves the problem that the timing control data stored in the memory is rewritten by the interference signal, which leads to the problem that the display screen of the display panel cannot be normally driven.

The invention discloses a method for protecting data in a display panel and a display device thereof. The display device comprises a display panel; a storage unit which is arranged on a driving boardin the display panel and is used for storing data of a time sequence control unit; a time sequence control unit which is arranged in the display panel, and comprises a signal detection unit for detecting the state of a write protection signal; and a micro-processing unit which is used for determining to request or stop the storage unit from sending the data according to the state of the write protection signal.

The invention discloses a text hidden method based on Chinese sentence pattern template transformation. The method utilizes the computer system to carry out watermark embedment and extraction on text information to hide the text information, comprising the following steps: (1) carrying out pre-treatment on an electronic file; (2) generating watermark information sign and setting a key; (3) carrying out part-of-speech tagging to format-free file generated in step (1) by a part-of-speech tagging module and outputting a part-of-speech tagging string of a sentence; (4) simplifying the part-of-speech tagging string output in the step (3) by a chunk tagging module; (5) loading a template module to select a sentence pattern module; (6) embedding watermark information by a watermark embedment module; (7) outputting the hidden text with embedded watermark; and (8) extracting the watermark information from the hidden text by a watermark extraction module through the key. The text hidden method changes sentence pattern through a template, avoids complex understanding and processing of grammar and semanteme, ensures the carrier text better satisfying grammar and semanteme habit and prevents blindfold rewrite.

The present invention relates to the technical field of charging, in particular to a method for verifying charging parameters and a device and a charger to solve the problem that the safety threshold of each charging parameter cannot be effectively controlled and judged, resulting in charging failure. The method is : After the communication channel between the terminal and the charger is successfully established, the terminal reads the charging capacity information of the charger according to the preset method, and compares the maximum capacity value of the charger for each preset charging parameter with the corresponding preset value saved by the terminal itself. The target value corresponding to the charging parameter is compared, and the minimum value is determined to be the first configuration value of the corresponding preset charging parameter, and the first configuration value of each preset charging parameter obtained by comparison is written into the charger, and read The second configuration value of the charger for each preset charging parameter; after determining that all preset charging parameters are successfully configured, the terminal sends a charging confirmation instruction to the charger.

The present application relates to a method for protecting data in a display panel and a display device thereof. The display device includes: a display panel; a timing control unit arranged in the display panel and outputting a control signal; a judgment unit arranged in the In the display panel, a write protection input signal and the control signal are received, and when it is determined that at least one of the write protection input signal and the control signal is at a high level, a write protection output signal is output to a storage unit; and the storage unit, arranged on a drive board in the display panel, used to store the data of the timing control unit, and enter the read-only mode after receiving the write protection output signal; wherein, the The write protection output signal is at a high level; after the storage unit enters the read-only mode, the timing control unit reads the data in the storage unit.

It has: a device (2), which stores data; an authentication information storage unit (4), which stores authentication information; an authentication function unit (5), which performs user authentication based on the authentication information; and an encryption filter (3), which has multiple One of the encryption modes (311~31n), one of which is preset by the user for encryption processing, the authentication function part (5) performs user authentication when requesting to write data to the device from an external device, and the user authentication succeeds In this case, for the data written to the device (2), the encryption filter (3) is encrypted using the encryption mode (311~31n) set in advance by the user, and then written to the device (2). When the authentication fails, the encryption filter (3) encrypts the data written in the device (2) using an encryption mode (311 to 31n) different from the encryption mode set in advance by the user, and sends the encrypted data to the device (2). (2) Write.

A semiconductor device includes a memory portion in which a plurality of magneto-resistance effect elements each having a hard-axis of magnetization and an easy-axis of magnetization are arranged and one of binary data is written in all the magneto-resistance effect elements, and a circuit portion to which a write current is supplied to write only the other one of the binary data in only a selected magneto-resistance effect element selected from the magneto-resistance effect elements.

The invention discloses a method for storing parameters through CPU internal storage space. The method comprises the first step of defining a CPU structural body in a CPU, wherein the CPU structural body comprises parameters and drive codes; the second step of defining an upper computer structural body same as the CPU structural body in an upper computer; the third step of loading the parameters to be set to the upper computer structural body through the upper computer, issuing the content of the upper computer structural body to the CPU and reprinting the parameters to the CPU structural body through the CPU; the fourth step of writing the parameters of the CPU structural body to the electrically erasable storage space. The parameters of the system are written to the electrically erasable storage space in the CPU of the system. System parameters are prevented from being rewritten, the reliability of the system is improved, and cost is reduced.

The invention discloses a storage data reading and writing protection method. The method comprises setting unlocking constants, locking constants and unlocking / locking variables, setting the initial value of the unlocking constants as the locking constants; creating an unlocking interface, and assigning the unlocking constants to the unlocking / locking constants in a high-to-low bit-by-bit mode; receiving a program command for reading / writing storage data and calling the unlocking interface; determining whether the unlocking / locking variables are equal to the unlocking constants, if so, calling the reading and writing interface of the storage data and executing the operation of storage data reading and writing, and if not, inhibiting the storage data reading and writing. The storage data reading and writing protection method can avoid rewriting data inside a storage device due to program running disorder during power interruption.

The invention discloses a control behavior detection and protection method and system of an industrial control system. The detection and protection method includes receiving at least one data packet being transmitted on the communication network of the industrial control system; A control behavior associated with at least one data packet is detected by a plurality of characteristics; corresponding to at least one data packet being transmitted and the detected control behavior, at least one protection rule is determined; a protection operation is performed on the data packet, and the data packet is the corresponding One of several data packets of a protection rule, and the protection operation includes one or more of the following operations: allow data packet transmission, block data packet transmission, require user authentication, and record data packets. The invention can detect internal or external illegal operation attempts that violate the control behavior norms on the basis of the pre-established control behavior norms.

A method for protecting code section used in MIPS system includes making addresses of code section and data section be both placed in region being able to be converted by internal memory management unit in MIPS system when host software is compiled and generated, making code section and data section be placed in said region in program address space of host software when host software is started up. The protection device for realizing said method is also disclosed.

The invention provides a gamma correction buffer circuit which comprises a judgment unit and a control unit. According to judgment unit, when a circuit system where the gamma correction buffer circuit is located is powered on, whether digital working voltage of the gamma correction buffer circuit is larger than or equal to threshold value voltage of the gamma correction buffer circuit or nor is judged. According to the control unit, when the digital working voltage is determined to be smaller than the threshold value voltage, an IIC serial bus of the gamma correction buffer circuit is prohibited from being operated, data are not allowed to be written into a storage unit of the gamma correction buffer circuit through the IIC serial bus, and when the digital working voltage is larger than or equal to the threshold value voltage, the control unit controls the IIC serial bus to be allowed to be operated, and the data can be written into the storage unit of the gamma correction buffer circuit through the IIC serial bus. The invention further provides an anti-interference method and a display device. According to the technical scheme, external disturbance can be prevented from affecting the data in a register of the gamma correction buffer circuit, the capacity of resisting the disturbance of a system is enhanced, and stability of the system is improved.