110results about How to "Quick erase" patented technology

A package-on-package (POP) secure module includes a BGA mesh cap, a first BGA package, and a second BGA package. The first BGA package includes a first integrated circuit (for example, a microcontroller that includes tamper detect logic). The second BGA package includes a second integrated circuit (for example, a memory). The second BGA package is piggy-back mounted to the first BGA package and the BGA mesh cap is piggy-back mounted to the second BGA package. A printed circuit board substrate member of the BGA mesh cap includes an embedded anti-tamper mesh. This mesh is connected in a protected manner within the module to the first integrated circuit. When the module is in use, a mesh embedded in an underlying printed circuit board is coupled to the BGA cap mesh so that both anti-tamper meshes are controlled by the tamper detect logic.

A set of non-volatile storage elements is divided into subsets for erasing in order to avoid over-erasing faster erasing storage elements. The entire set of elements is erased until a first subset of the set of elements is verified as erased. The first subset can include the faster erasing cells. Verifying the first subset includes excluding a second subset from verification. After the first subset is verified as erased, they are inhibited from erasing while the second subset is further erased. The set of elements is verified as erased when the second subset is verified as erased. Verifying that the set of elements is erased can include excluding the first subset from verification or verifying both the first and second subsets together. Different step sizes are used, depending on which subset is being erased and verified in order to more efficiently and accurately erase the set of elements.

A memory architecture includes a memory including a Command Set, and a serial peripheral interface (SPI) for connecting the memory to a generic host device. The SPI includes a data in line for supplying output data from the host device to inputs of the memory; a data out line for supplying output data from the memory to input of the host device; a clock line driven by the host device; and an enable line that allows the memory to be turned on and off by the host device. The memory is a NAND Flash Memory. The SPI includes an I/O registers block, including an SPI label register and a data register for driving separately data, commands and addresses directed to the memory from the corresponding SPI label registers.

A band gap engineered, charge trapping memory cell includes a charge trapping element that is separated from a gate by a blocking layer of metal doped silicon oxide material having a medium dielectric constant, such as aluminum doped silicon oxide, and separated from the semiconductor body including the channel by an engineered tunneling dielectric.

The invention relates to a floating gate type field effect transistor memory with a rapid data erasing and writing function and a manufacturing method thereof, which belong to the technical field of memories. In the prior art, the aspect of improving the erasing and writing effects of memories is mostly not very obvious. According to the memory provided by the invention, a silicon wafer with a silicon oxide layer is used as a substrate, the memory sequentially comprises few layers of graphene serving as a floating gate layer, hexagonal boron nitride serving as an insulating layer and novel two-dimensional materials (platinum disulfide and rhenium disulfide) serving as a channel layer from the substrate to the top, and further comprises a source electrode and a drain electrode which are formed on the channel layer by utilizing an evaporation process, and while rapid writing of the data is realized, rapid erasing of the memory data is also realized.

The invention discloses a quick vector linetype erasing method. According to the method, a displayed linetype is erased according to an erasing path, only a to-be-erased linetype through which the path passes is erased, the opaqueness of pixels of the to-be-erased linetype is calculated, the effectiveness of the to-be-erased linetype is judged, and whether display of the whole linetype is deleted is further judged, so that one-step quick erasing is realized. Words and lines are erased by adopting a line interweaving point identification method aiming at the vector linetype, and the words and line types can be rapidly and accurately erased.

The invention relates to an electronic storage medium data wiping device and a data wiping method and discloses a portable electronic storage medium data wiping device and a data wiping method based on the same for solving the problems of the existing data wiping device that fewer functions are provided, the destroying speed is low, the portable degree is low and the wiping result is uncertain. The data wiping device provided by the invention comprises a power-on key, an equipment interface, a liquid crystal display, a starting key, a mode select key, an up/down selection key, a reporting browse key, a power input interface, a battery and a data wiping control module. The data wiping method comprises the following specific processes of: recognizing information of an equipment disk; displaying that the interfaces are in a stage of waiting for execution; detecting whether the disk has an HPA(high-power amplifier) hiding fan-shaped region and a DCO (data control office) hiding fan-shaped region; if so, removing the HPA and the DCO; if not, neglecting the fan-shaped regions; and selecting a wiping mode: rapid wiping or user-defined wiping; formatting the disk, and generating an wiping recording report. The data wiping device and the data wiping method provided by the invention are used for wiping data of different media.

The invention discloses an erasing method for storage units. The method comprises: according to an erasing instruction, carrying out an erasing operation on a plurality of storage units corresponding to a current erasing block address; carrying out erasing verification on each storage unit corresponding to the erasing block address, checking if a current state of each storage unit is a successful erasing state, ending the current erasing operation if yes, or increasing a pulse width of an erasing voltage and returning to execute the erasing operation carried out on the plurality of storage units corresponding to the current erasing block address until each storage unit corresponding to each erasing block address is successfully erased. According to the erasing method for the storage units which is provided by the embodiment of the invention, by continuously increasing the pulse width of the erasing voltage along with increase of erasing times, rapid erasion on the storage units is implemented, and an erasing speed is improved.

The invention discloses an environmental-friendly writing ink for a white board pen. The writing ink is made from the following materials in part by weight: 4-8 parts of plant pigments, 6-10 parts of emulsifying agents, 2-5 parts of castor oil, 3-7 parts of palygouskite, 15-25 parts of ethanol and 30-80 parts of deionized water. The ink has the advantages of environment protection, safety, stable long-placed performance, bright and soft color and smoothness in writing, can be quickly erased by water and is particularly applicable to the teaching white board pen.

The embodiment of the invention provides a tamper-proof method and a tamper-proof device for a bootstrap firmware of a password keyboard. The tamper-proof method comprises the following steps of calculation steps: reading bootstrap firmware data and calculating a HASH value, namely HASH_B of the bootstrap firmware data; decryption step: acquiring an encryption key, namely KEY_HASH and a HASH value, namely HASH_A, and deciphering; comparing step: comparing and judging whether the deciphered data are identical with the HASH_B or not, if not, generating an erasing instruction; a first execution step: erasing the bootstrap firmware data according to the erasing instruction. According to the embodiment of the invention, after a password keyboard firmware is started, the HASH data obtained by deciphering are compared with the HASH value obtained by calculating, and if the HASH data are different from the HASH value, the condition that a flash memory is intruded is judged, and further the bootstrap firmware data are quickly erased, the tempering of the bootstrap firmware of the password keyboard is effectively prevented, and the security of the password keyboard is improved.

The invention relates to the technical field of solid state disks, and discloses a cipher key-based secret key negotiation method and a cipher key-based safety guiding method for a self-encryption solid state disk. According to the key negotiation method, the session key is generated through negotiation between the key and the self-encryption solid state disk, and the KEK is encrypted or decryptedthrough the session key, so that the attack resistance of the key encryption key KEK and the encryption key DEK is greatly improved. According to the safety guiding method of the self-encryption solid state disk, based on the key negotiation method, the KEK is decrypted through the session key, and then the DEK of the self-encryption solid state disk is decrypted through the KEK, so that the self-encryption solid state disk is decrypted to complete guiding, and the safety of the self-encryption solid state disk is improved.

The invention discloses a medical dirt eraser which comprises a brush head rotatably installed on a brush handle. The brush handle is fixedly provided with a brush cover covering the brush head. The brush head is in transmission connection with the output shaft of a power device through a universal hose. The eraser further comprises a liquid sprayer driven by the power device. The liquid sprayer is connected with a cavity of the brush cover through a water pipe. A speed regulating unit is arranged between a main wheel and a rack. The rack drives the main wheel to rotate through the speed regulating unit. The speed regulating unit comprises a transmission wheel and a driving gear axially and fixedly arranged. The transmission wheel is in transmission match with the main wheel, and the driving gear is in transmission match with the rack. The medical dirt eraser in the structure is reasonable in structure, and can quickly clean or eliminate splodge or dirt to prevent medical personnel from being contacted with dirt manually, so that the medical infection risk is reduced. The eraser is time-saving and labor-saving and convenient to operate, so that the safety and sanitation of medical personnel are ensured.

An erasing device for a liquid crystal display image of the present invention is furnished with an auxiliary power source for continuously supplying power source to a liquid crystal display panel for a certain period after the main power source of the main body of the liquid crystal display device is turned OFF. Upon input of a power source OFF signal directing to turn OFF the main power source, a driving signal generating circuit and a driver controller light up the liquid crystal display panel entirely on a saturation voltage of the liquid crystal and subsequently shut off the same entirely using the power supply from the auxiliary power source. Consequently, it has become possible to erase an afterimage quickly on an active matrix liquid crystal display panel with a memory maintaining function of a liquid crystal display device, thereby not only upgrading the display quality, but also preventing deterioration of the liquid crystal caused by an application of an abnormal voltage associated with the occurrence of an afterimage.

The invention discloses a teaching board which comprises a base. A support column is fixedly connected with the upper side of the base, a teaching board body is fixedly connected with a side of the support column, a mounting frame is fixedly connected with the side, which is far away from the support column, of the teaching board body, a mounting cover is fixedly connected with the lower side of the mounting frame, a first bevel gear is rotationally connected with the inner bottom of the mounting cover by a first transmission shaft, the lower end of the first transmission shaft penetrates thebottom of the mounting cover and is connected with a crank, and slide plates are connected with two sides of the first bevel gear by adjusting mechanisms. The teaching board has the advantages that the two slide plates can be driven by the adjusting mechanisms to move towards opposite directions, mounting plates can be driven to move under the movement actions of the slide plates, brushes can be driven to move under the movement actions of the mounting plates, accordingly, board writing on the teaching board body can be quickly erased under the movement actions of the brushes, and the erasingefficiency of the teaching board body can be improved without influence on the teaching progress of teachers or influence on learning of students.

The invention provides a method for removing oxygen through photochemistry to protect triplet excited state of a photosensitizer and application thereof. The method comprises the following steps: adding the photosensitizer into a solvent, and irradiating a solvent containing the photosensitizer by using exciting light. Through the method, the solvent does not need to be subjected to oxygen removalmeasures such as bubbling through inert gas and the like; the oxygen in the solvent can be removed by directly irradiating the solvent containing the photosensitizer under the air condition; phosphorous light is gradually intensified in the solvent; the invention also relates to the application of the method to photoetching through gel and implementation of triplet state-triplet state annihilation photon up-conversion under the air condition.

The invention provides a rapid line erasing method and system. The method comprises steps of obtaining drawing path points; obtaining a drawing path point array corresponding to each drawing line according to the drawing path points; obtaining a background color of an initial drawing interface; obtaining an erasing path point array corresponding to drawn erasing lines in the erasing process; obtaining color values of each erasing path point in the erasing path point array corresponding to the background color of the initial drawing interface and a current drawing interface; according to obtained order traversal erasing path points in the erasing path point array, determining whether the color value of each erasing path point corresponding to the background color of the drawing interface is consistent to the color value of each erasing path point corresponding to the current drawing interface or not, and obtaining a determination result; finishing traversal if the determination result is inconsistent; and obtaining drawing lines of the erasing path points containing color value changes, and erasing obtained drawing lines.

The invention discloses an automatic blackboard eraser mechanism for horizontal push-pull type blackboards and a use method of the automatic blackboard eraser mechanism. The automatic blackboard eraser mechanism comprises a fixed strip, a long rod, an M-shaped connecting rack, a baffle, a handle shaft, a handle, a long rotating shaft, a mounting bracket, a diagonal draw bar and a blackboard eraser, wherein a blackboard eraser structure is vertically fixed at the jointed part of two movable blackboards; the mounting bracket with shaft holes is fixed at the top and the bottom of a blackboard outer frame through rivets or nuts; the M-shaped connecting rack penetrates through the shaft holes of the mounting bracket and is fixed on the long shaft by the diagonal draw bar; the rotating handle is arranged at the middle of the M-shaped connecting rack at the bottom and can do up-down motion in a vertical plane around the handle shaft on the M-shaped connecting rack; meanwhile, the rotating handle can drive the M-shaped connecting rack to rotate leftwards and rightwards for attaching the blackboard eraser to the board surface; handwriting can be erased by pulling the blackboards. The automatic blackboard eraser mechanism and the use method disclosed by the invention are simple in design and are free from need of power; the erasing work of the blackboards is finished by using the moving inertia of the left-right push-pull type blackboards, and the erasing efficiency of the handwriting on the push-pull type blackboards is improved.

The invention discloses a stroke erasing method and device, equipment and a readable storage medium, and the method comprises the steps: converting a to-be-erased stroke into a plurality of line segments, and reducing the processing range of writing equipment; judging the intersection of each line segment in the to-be-erased strokes and directly erasing the whole strokes where the line segments intersected with the erasing track are located, thus the erasing efficiency of the writing equipment on the to-be-erased strokes is improved; further performing distance judgment on line segments whichare not intersected with the erasing track in the to-be-erased strokes, thus the strokes where the line segments with the distance to the erasing track smaller than the threshold value are located canalso be erased, the overall scheme of the method is further perfected, and the writing equipment can rapidly screen out the strokes meeting the conditions from the multiple strokes to be erased to beerased without consuming a large number of system resources.

The invention discloses a memory device based on phase change quantum dots and a manufacturing method of the memory device. The memory device based on the phase change quantum dots comprises a semiconductor substrate, a tunneling layer, a phase change quantum dot film layer, a barrier layer, a first electrode and a second electrode. The tunneling layer is arranged on the semiconductor substrate; the phase change quantum dot film layer is arranged on the tunneling layer and comprises the phase change quantum dots, and the phase change quantum dots can achieve information storage through trapping tunneling charges and reversible transformation between a crystalline state and an amorphous state; the barrier layer is arranged on the phase change quantum dot film layer and can stop charges trapped by the phase change quantum dots from entering the first electrode; the first electrode supplies electricity to the barrier layer; the second electrode supplies electricity to the semiconductor substrate.