107 results about "Data erasure" patented technology

The embodiment of the invention relates to the technical field of software development, in particular to a vehicle software upgrading method and device, equipment and a storage medium, and aims at reducing computing resource consumption and network resource consumption in the differential upgrading process. The method comprises the steps that differential data and differential configuration information corresponding to the vehicle software are received, the differential data comprise a plurality of differential data blocks, and the differential data blocks are obtained according to different data in a source data packet and an upgrade packet of the vehicle software; the differential configuration information at least comprises a storage address corresponding to each differential data block in the differential data; according to the storage address of the data block corresponding to the differential data, performing data erasing on the data block corresponding to the vehicle software; and writing the differential data into a data block corresponding to the vehicle software.

The invention relates to a non-volatile memory erase scheme. Methods, systems, and devices provide techniques for erasing data in a memory device. The memory device includes a plurality of memory blocks. Each of the plurality of memory blocks includes a plurality of word line segments. Each of the plurality of word line segments includes one or more word lines forming a subset of word lines in the memory block. The memory device further includes a memory controller configured to perform: receiving an erase command for erasing data in the memory block; and in response to receiving the erase command, causing one or more erase pulses to be applied to the plurality of word line segments to ramp up word lines of different word line segments of the memory block in different periods such that when data erase begins at a first word line segment, data erase does not start at another word line segment.

The invention relates to the technical field of data storage security, in particular to an access protection method for a solid state disk, which comprises a dynamic authentication module and a hierarchical encryption module, the dynamic authentication module generates a temporary access token through multi-dimensional identity authentication, and a behavior analysis component dynamically adjusts the strict degree of a security policy according to the operation habit of a user; the hierarchical encryption module adopts a partition storage structure, performs hierarchical encryption according to data sensitivity and allocates access authority, and a built-in data erasure trigger can quickly clear sensitive data under abnormal access. According to the access protection method for the solid state disk, the reliability and flexibility of data protection of the solid state disk can be improved, the problems that a traditional method is insufficient in safety and complex in operation are solved, meanwhile, user experience and the service life of equipment are considered, and remarkable technical advantages and application value are achieved.

According to one embodiment, a memory system includes a non-volatile memory with a plurality of blocks. The minimum unit of a data erasing operation in the memory system is a block. A controller is electrically connected to the non-volatile memory and configured to execute, in response to a first command from a host requesting a secure erase of secure erase target data stored in a first logical area identified by a first logical area identifier, a copy operation copying valid data other than any secure erase target data from one or more first blocks of the plurality in which the secure erase target data is stored to one or more copy destination blocks of the plurality. The controller executes the data erasing operation on the one or more first blocks after the copy operation.

Systems, methods, and apparatus for memory management operations in a memory device. In one approach, each of multiple banks in a memory array includes a scrub holding register. Data is scrubbed in the background by moving data from a location in a memory array to the scrub holding register. Data in the scrub holding register is scrubbed by error correction circuitry shared by the multiple banks. Status data is recorded for any writes that occur to the array location during the scrubbing. After scrubbing is complete, some or all portions of the scrubbed data are moved back to the array location. The status data is used to identify those portions to move back.

According to one embodiment, a controller of a memory system performs a first operation a plurality of times for each of a plurality of first blocks. The first operation includes a write operation for writing data in a first write mode for writing m-bit data per memory cell and a data erase operation. While a second block is not a defective block, the controller performs a second operation a plurality of times for the second block. The second operation includes a write operation for writing data in a second write mode for writing n-bit data per memory cell and a data erase operation. When the second block is a defective block, the controller selects a first block from the plurality of first blocks, and writes second write data to the selected first block in the second write mode.

The invention provides an FPGA remote updating method and a related device, and belongs to the technical field of FPGA remote updating. After a first FPGA board card receives a remote updating command, the state of a jump control area synchronization head is obtained from a jump control area, and which application bit stream area is updated is determined based on the state of the jump control area synchronization head; the first FPGA board card erases data in the first application bit stream area or the second application bit stream area; after the data of the first application bit stream area or the second application bit stream area is erased, the second FPGA board card transmits the update data to the first FPGA board card; the first FPGA board card reads back the updated data from the Flash memory, and performs CRC (Cyclic Redundancy Check) on the read-back updated data to obtain a CRC result; and based on a CRC result, determining whether remote updating of the first FPGA board card is completed or not. The method solves the problems that after FPGA logic codes are modified, programming needs to be conducted block by block, a large amount of time and manpower are occupied, and the project progress is seriously affected.

To provide a system for preventing a commodity of which data has not been erased, from being sold.SOLUTION: A system equipped with at least one computer device includes commodity selling means which executes sale start processing to start selling a commodity based on erasure information on erasure of data stored in the commodity, or settlement processing for the commodity. The system equipped with at least one computer device includes availability output means which outputs, based on erasure information on erasure of data stored in a commodity, availability information as to whether the commodity can be sold or not, and / or the erasure information of the commodity.SELECTED DRAWING: Figure 7

[Problem] To both recover a greater amount of valuable material from a used product obtained by mixing a reused item and a recycled item, suppressing the amount of waste to the extent possible, and create an environment that eliminates concerns regarding data leakage and allows a provider, who provides worn-out electronic devices, to provide a used item to a collector without anxiety. [Solution] A used product recovery device 1 comprises: an authentication unit 23 that authenticates a user 102; a data erasure unit 7 that erases data stored in a used product 103; a sorting unit (reused item accommodation unit 81 and recycled item accommodation unit 82) that classifies used products from which data has been erased into two or more types including reused items and recycled items; and an association information providing unit 21 that provides, to an external device 106 related to confirmation of data erasure with respect to the reused items and the like, association information indicating an association between the user 102 authenticated by the authentication unit 23 and the reused item or the like that the user 102 desires to have picked up.

Systems, methods, and apparatus for memory management operations in a memory device. In one approach, each of multiple banks in a memory array includes a scrub holding register. Data is scrubbed in the background by moving data from a location in a memory array to the scrub holding register. Data in the scrub holding register is scrubbed by error correction circuitry shared by the multiple banks. Status data is recorded for any writes that occur to the array location during the scrubbing. After scrubbing is complete, some or all portions of the scrubbed data are moved back to the array location. The status data is used to identify those portions to move back.

The invention provides a memory device and a data erasing method thereof, which can prolong the service life. The data erasing method includes performing a first data erasing action of a memory block, where the memory block includes first to Nth word lines, N being a positive integer greater than 1; for the first word line to the Nth word line of the memory block, sequentially executing an erase verification action one by one; finding out a failed word line of the memory cell which fails to be verified for the first time in the erasing verification action; and enabling the failed word line to the Nth word line to be at least one selected word line, enabling the rest word lines to be at least one unselected word line, shielding the at least one unselected word line, and executing a second data erasing action aiming at the storage unit of the at least one selected word line.

The invention provides a data storage method and device, equipment and a storage medium, and the method comprises the steps: determining a storage address of to-be-stored data, determining a first sector to which the to-be-stored data is to be written, setting a preset flag of the first sector to be in an invalid state, and storing the to-be-stored data in the first sector; and judging whether the first sector and a second sector in which the storage data of the last time period is written are the same sector or not, if the first sector is a new sector which is not the second sector, erasing the storage data of the first sector, and writing the data to be stored into the erased first sector. According to the data storage method provided by the embodiment of the invention, the preset mark of the first sector can be set to be in the invalid state when the stored data in the first sector is invalid, and the original stored data in the first sector is erased and the to-be-stored data is written into the erased first sector when the storage capacity of the second sector is saturated. The method and the device can avoid too long erasing processing time of the stored data and effectively improve the data storage efficiency.

The application provides an embedded system one-key destruction method and system based on eMMC storage, and belongs to the technical field of memory data destruction. The embedded system one-key destruction method based on eMMC storage comprises the following steps: S1: a key drive detects that a destruction key is pressed down; S2: whether the time of pressing down the destruction key exceeds a first set value is judged, if not, no operation is performed, and if yes, the next step is performed; S3: an eMMC drive scanning function detects the destruction key, and if it is detected that the destruction key is pressed down, the next step is performed; S4: an erase function of the eMMC drive is executed to erase the data of the eMMC; and S5: data destruction is completed. The application has the beneficial effect that based on the existing structure, an external MCU is not needed, and one-key destruction operation of eMMC storage can be realized through pure software.

To enable notification to a specific user of the completion of data erasure while preventing leakage and tampering of information concerning data stored in an image forming apparatus.SOLUTION: The image forming apparatus includes erasure means for erasing data stored in a storage unit, and output means for outputting, in encrypted form, notification information indicating that the data has been erased when the erasure means erases the data.SELECTED DRAWING: Figure 7

A data erasure system (100) comprising a memory (101) comprising a plurality of banks (101a-n). The data erasure system (100) further comprises a processor (102) configured to write data to and / or read data from one of the plurality of banks (101a-n) at a time. The data erasure system (100) further comprises an erasure module (106) configured to perform an erasure operation by overwriting data on two or more of the plurality of banks (101a-n) concurrently, wherein overwriting data on one of the two or 10 more banks (101a-n) is independent of overwriting data on another of the two or more banks (101a-n).

The application discloses a data erasing method and an electronic device, relates to the technical field of data processing, and comprises the following steps: a processor only allows to start a write protection closing and a data erasing process when a management board is a secondary return board type, so that the miserasing operation of a non-target scene such as first production and operation and maintenance is avoided from a scene source. In addition, the closing of the write protection function is directly linked depending on a hardware pin, so that the risk of mistriggering or vulnerability at the software level is reduced. Therefore, the data erasing method provided by the application improves the security of data erasing processing on data in a target address range.

This invention discloses a method, apparatus, device, and medium for handling erasure coding data read failures, relating to the field of distributed storage systems. The method includes: if a target number of available data blocks exist, and any object storage device among the target number of object storage devices reports an error causing data read failure, then the primary object storage device sends an error message to the client, marks the status of the erroneous object storage device, and synchronizes the status marking information to the target object list so that the client can determine whether to perform data erasure coding; if the erroneous object storage device recovers or a new object storage device is added, then the target number of available data blocks are read to obtain the original data, the target data for which the read failed is determined based on the original data, and the target data is written to the target object storage device; the status of the target object storage device is modified by the primary object storage device so that the client can re-initiate the data read request. This improves the overall stability of the storage system.

The application provides a data erasing method, device and equipment of a memory and a medium. The data erasing method comprises the following steps: obtaining a first average wear degree and a second average wear degree; reading corresponding mapping tables according to a logical address to be erased; determining an erasing mode according to a comparison result of the first average wear degree and the second average wear degree; when the first mode is adopted, determining and emptying a mapping relationship of a largest mapping table item in the mapping tables according to the logical address to be erased; when the second mode is adopted, updating a corresponding physical address in a mapping relationship of a mapping table item in the mapping tables into a preset invalid data physical address; and erasing user data and invalid data. The application provides a data erasing method, device and equipment of a memory and a medium to solve the technical problem that the life of a mapping table block and the life of user data blocks are not synchronized.

The invention provides a scan chain protection method and a chip system. The chip system comprises a scan chain, an anomaly detection unit, a safety control unit and a risk assessment unit. The anomaly detection unit obtains state information of the scan chain; the risk assessment unit determines the current risk level of the scan chain according to the state information; and if the current risk level meets the data protection condition, the security control unit shields the scan chain and erases sensitive information in the chip system. Thus, when the risk assessment unit confirms that the current risk level of the scan chain reaches the preset data protection condition, the security control unit immediately shields the scan chain and erases the sensitive information, and the sensitive information exposure window period is shortened, so that slight attack is avoided, namely destructive defense actions are met, and the security of the security control unit is improved. And an attacker is effectively prevented from acquiring residual information by using a bypass attack means before data erasing is not completed.

The application discloses an end-side idle time computing power sharing and secure transaction method and system based on a hardware root of trust, and belongs to the technical field of distributed computing and data security. A hardware-level logically isolated secure execution environment is created in a trusted execution environment through a hardware root of trust built in an end-side device, so that bidirectional isolation of task data and device data is ensured. Each transaction is jointly signed by the hardware roots of trust of both parties, so that an unalterable transaction settlement voucher is formed. The system supports user control functions such as manually accepting or rejecting a request, starting or stopping idle time sharing, and externally requesting computing power. After the execution environment is destroyed, full zero overwrite is performed, and a verifiable data erasure certificate is generated. The application solves the core problem of bidirectional trust in idle time computing power sharing, supports transaction evidence storage and public welfare donation evidence storage in accordance with legal norms, and provides a secure and reliable technical foundation for constructing a global end-side distributed computing power network.

The invention relates to the field of data communication, in particular to power equipment, a firmware upgrading method and device thereof and a program product. The method comprises the following steps: receiving differential upgrading data; performing differential reduction according to the differential upgrading data and the first firmware data before upgrading to obtain reduction data of a non-standard firmware area of the second firmware data, determining an initial address of the non-standard firmware area and setting an upgrading identifier; in the system starting process, data erasing is carried out according to the upgrading identification and the initial address, restored data is written into the non-standard firmware area, and the upgrading identification is cleared after firmware upgrading is completed. In the firmware upgrading process, only a small amount of differential upgrading data needs to be transmitted, the reduction of data transmission error probability is facilitated, the upgrading success rate is improved, only data in the non-standard firmware area needs to be erased for writing, the data erasing time can be effectively shortened, the unavailable duration of equipment is shortened, and normal operation of a system is facilitated.

The present invention relates to an erasing device and method for a memory. The erasing device of the memory controls a switch and a leakage current readout circuit, wherein one end of the control switch is connected to a memory cell and the other end is connected to a switch selection signal, and the leakage current readout circuit includes a transimpedance amplifier and a voltage amplifier. The method comprises: repeatedly performing an erasing operation on the memory cell according to the current difference between the current threshold voltage and the initial threshold voltage until the current difference is less than the set difference. The present invention obtains the leakage current value after the erasing operation through the leakage current readout circuit, calculates the threshold voltage of the memory cell after the erasing operation, and thereby determines the electron residue on the floating gate, so as to realize an effective data erasing operation, and improves the reading accuracy under a wide range of input voltages by improving the circuit design, so as to further improve the effectiveness of data erasing.

The present application discloses a data erasing method and system, a secure erasing switch, and a data erasing apparatus. The method comprises: in response to a user successfully logging in by using a login password, detecting all storage medium types and partition information of a target device, and generating a plurality of storage device entries, the storage device entries comprising storage description information of devices; in response to an erasure command, converting the storage device entries and settings information into a configuration file, wherein the settings information comprises erasure levels, erasure strategy entries, and erasure rule entries; parsing the configuration file, converting storage description information in the configuration file into execution scripts, and creating worker threads for the execution scripts; and mapping erasure rules into operation instances, and using the worker threads to traverse the operation instances to execute a data erasure operation of the target device. The present application can implement data erasure of various types of storage media.

The invention discloses a digital equipment online leasing method and device based on security detection and user privacy protection, and the method specifically comprises the steps: enabling a platform to achieve the automatic recognition of an equipment Root behavior, system tampering and potential Trojan horse based on system integrity verification, hardware fingerprint verification and security policy model evaluation before equipment is delivered out of a warehouse; in the equipment returning process, the equipment returning link and state are recorded by combining equipment positioning, logistics track acquisition and returning photographing comparison means, and false returning and loss disputes are prevented; and after the equipment is returned, a data clearing mechanism and a data erasing verification mechanism are automatically triggered for the digital equipment returned by the user. The method has the characteristics of intelligence, automation and high security, effectively guarantees data privacy and asset security in digital leasing business, and is suitable for application scenes such as online equipment leasing platforms and intelligent terminal operation and maintenance systems.

This invention discloses an attitude switch. By incorporating an eccentric weight, the switch utilizes the change in detector attitude from vertical to horizontal. The eccentric weight, under the influence of gravity, drives the connecting shaft to rotate, moving it from the first control slot into the second control slot. This further releases the limiting effect of the positioning component on the push rod within the attitude switch, causing the push rod to actuate under the action of the elastic component. This actuates the toggle switch, completing its switching function and enabling data erasure. The switch features stable performance and high reliability. It can quickly activate when the detector attitude changes, triggering the self-destruct mechanism within the detector and effectively preventing the loss of technology carried by the detector.

The invention provides a data management method and device of a Flash memory, and relates to the technical field of data processing, the Flash memory comprises two sectors, each sector comprises a memory head area, a data storage area and a data head area, and the memory head area records a corresponding sector state; the method comprises the following steps: reading sector states in memory head areas of two sectors, determining the sector of which the sector state is an erased state as a target sector, and taking the other sector in the two sectors as a current sector; if the sector state of the current sector is a full state, reading effective data in the current sector; writing the effective data into the target sector, and after all the effective data are written into the target sector, modifying the sector state of the target sector into an active state; and erasing the data in the current sector, and modifying the sector state of the current sector into an erased state after the data in the current sector is erased. The problem that the data storage efficiency of a Flash memory is low is solved.

An automated device and method for erasing data stored in non-volatile memories of electronic devices, such as smartphones or tablets, is disclosed. The device includes the use of an irradiation chamber having at least one X-ray source confined in a X-ray-tight enclosure, capable of receiving a plurality of electronic devices that can be brought into the chamber by a conveyor. A control unit controls the conveyor and the X-ray source to irradiate each electronic device with controlled power and duration for erasing data stored in the non-volatile memories of the electronic devices.

The present disclosure provides a chip on-orbit reconfiguration method, device, equipment and storage medium, which can be applied to the field of FPGA on-orbit reconfiguration technology. The method comprises: in response to receiving a reconfiguration instruction sent by a management end, running the reconfiguration instruction to erase data in a target address region of a first storage chip indicated by the reconfiguration instruction; returning feedback information indicating that the data erasure has been completed to the management end; writing a configuration data packet into the target address region of the first storage chip; running a restart instruction to control a service chip to enter a restart state, wherein the service chip is configured to send a resource loading instruction to a master control chip in response to being in the restart state; and in response to the resource loading instruction based on the interface timing of a second storage chip connected to the service chip, the configuration data packet is sent to the service chip, wherein the service chip is configured to perform on-orbit reconfiguration based on the configuration data packet.

Semiconductor devices, controllers, and their operating methods are disclosed. In an embodiment, a controller includes an internal command generator configured to generate overwrite operation setting information in response to a data permanent erase request to perform an overwrite operation on a data storage area corresponding to the data permanent erase request; an overwrite data generator configured to generate a plurality of unit addresses corresponding to the data storage area based on the overwrite operation setting information, and to generate a plurality of pieces of overwrite data to be written to the data storage area corresponding to the plurality of unit addresses, respectively; and a storage area controller configured to control the data storage area to store the plurality of pieces of overwrite data corresponding to the plurality of unit addresses, respectively.