65 results about "ASCII" patented technology

The invention provides an AC mode matching tree construction method and device and an AC mode matching tree matching method and device.In one example, the AC mode matching tree construction method comprises the steps that according to a mode set, the mode that all modes in the mode set are inserted into a dictionary tree is adopted, and an AC mode matching tree is constructed; according to a breadth-first traversal mechanism, state identifiers are distributed to all nodes of the AC mode matching tree in sequence; and according to a breadth-first traversal mechanism, for a plurality of different sub-nodes of the same node, according to characters corresponding to edges, connected with the different sub-nodes, of the node, and according to an ASCII code sequence, rearranging state identifiers for the plurality of different sub-nodes to obtain a final AC mode matching tree. By applying the embodiment of the invention, the memory access performance of the AC mode matching tree can be optimized.

The invention discloses a mimicry thought-based code dynamic obfuscation compiling method, system and equipment. The method comprises the following steps of: sensing a source code, and performing compiler annotation on a key function in combination with a large language model and expert knowledge; a global character string constant is extracted, an ASCII value of a character is coded into an MBA expression, a decoding function is inserted into a position where the constant is used, mimicry replacement is performed on an original character string in a data segment, and functions of other programs are disguised; adding a clone block irrelevant to function logic, and constructing a mimicry branch by using a dynamic opaque predicate as a jump condition; adding an equivalent heterogeneous shadow branch, and using a random predicate as a jump condition; a flower instruction is inserted, and an MBA expression is used for instruction replacement; and performing control flow flattening on the function. According to the method, the mimicry multi-variant thought is combined, accurate diversified confusion compilation is performed, and key fragments of program codes in the fields of industrial control, power grids, Internet of Things and the like are effectively protected.

The invention relates to a duplication name index creation and reconstruction method and device based on openGauss, and aims to solve the compatibility problem caused by index naming conflicts when heterogeneous databases such as MySQL migrate to openGauss. According to the method, a duplication index function switch is controlled through a GUC parameter ENABLEDUPLICATEINDEXNAME, when the duplication index function switch is started, a user table index name is rewritten (an affiliated table OID and an ASCII 0x1F invisible separator are added), and a unique system storage name is generated and written into a pgclass system table and other system tables; a REINDEX mechanism is provided to realize smooth transition of new and old index formats; and transparent analysis of user operations (such as INDEX HINT) is supported. According to the method, on the premise that the global uniqueness constraint of the openGauss index is not damaged, the MySQL cross-table duplicate-name index is compatible, the migration efficiency and the system compatibility are improved, the labor cost is reduced through automatic rewriting, parameter control and other mechanisms, and the accuracy and stability of large-scale database migration are guaranteed.

The invention relates to an information compiling technical method based on a Julia fractal set, and the method comprises the following steps: S1, information coding: converting input information into a binary ASCII code, mapping the binary ASCII code into a complex number, and generating a Julia set image with a specific fractal feature; s2, obtaining a fractal dimension D: obtaining the fractal dimension D of the fractal image through a box counting method, and taking the fractal dimension D as a feature value of the information; s3, information hiding and storage: storing the fractal image feature data and the fractal dimension D in a database to realize dynamic storage of the information; and S4, information decoding and error correction: in the decoding process, obtaining the fractal dimension D of the fractal image, reversely deriving original information by taking the fractal dimension D as an index, and realizing error correction by utilizing fractal self-similarity. According to the method, the concealment of information, the efficient compression of data and the anti-interference capability can be realized by using the self-similarity and the high complexity of the fractal image.

The present invention relates to an information compilation technology method based on the Julia fractal set. The method includes the following steps: Step S1, information encoding: converting the input information into binary ASCII code and mapping it to complex numbers to generate a Julia set image with specific fractal features; Step S2, obtaining the fractal dimension D: obtaining the fractal dimension D of the fractal image through the box-counting method as the eigenvalue of the information; Step S3, information hiding and storage: storing the fractal image feature data and the fractal dimension D in a database to achieve dynamic storage of information; Step S4, information decoding and error correction: during the decoding process, obtaining the fractal dimension D of the fractal image, inversely deriving the original information based on this as an index, and using the fractal self-similarity to achieve error correction. The present invention can use the self-similarity and high complexity of the fractal image to achieve the concealment of information, the efficient compression of data, and the anti-interference ability.

The invention discloses a continuous identity verification method based on user keyboard behaviors. The continuous identity verification method comprises the following steps: acquiring behavior data of a to-be-verified user operating on equipment; according to the method, a feature vector and a two-dimensional matrix are constructed, and a plurality of dimensions including a pressure value, a value of an equipment acceleration in each axis under a three-dimensional coordinate system, a key pressing duration time and an interval time between two adjacent keys are calculated; according to the method, the correct identity of the user is verified based on the key and the ASCII code value corresponding to the character on the key, so that the accuracy is higher than that based on a single dimension, the typewriting behavior characteristics of the user can be described more comprehensively and accurately, and the accuracy of identity verification is greatly improved; according to the invention, the continuous identity verification of the mobile device user is realized, the limitation of the traditional one-time verification mode is changed, the identity false use condition can be found in time in the process of using the device by the user, and the security of the mobile device information is greatly improved.

A method for acquiring orbit change maneuver parameters based on an orbit change knowledge base and memory file mapping, the present invention relates to a method for acquiring orbit change maneuver parameters based on an orbit change knowledge base and memory file mapping. The purpose of the present invention is to solve the existing many-to-many service task planning in space. In the optimization and solution process, a large number of spacecraft orbit change process calculations are involved, which poses a challenge to the computer's computing speed, especially the Lambert maneuver and the problem of low solution efficiency when considering perturbations. The process is: 1. Generate an offline orbit change knowledge base; 2. Construct a coding rule in combination with an ASCII comparison table, and convert the generated offline orbit change knowledge base into an orbit change knowledge base stored in character form; 3. Load the orbit change knowledge base stored in character form obtained by the memory file mapping method, and realize the acquisition of spacecraft Lambert orbit change maneuver parameters according to the decoding rules. The present invention is used in the field of spacecraft orbit change maneuvers.

The invention discloses an embedded host data encryption method and encryption system in the technical field of data encryption. The method comprises the following steps: setting a data transmission starting password and a 16-bit character index table of a microprocessor; correspondingly converting the data transmission starting password into a binary ASCII value according to an ASCII code table; performing grouping calculation on the binary ASCII values to obtain a decimal character array, sequentially converting each value in the decimal character array according to a 16-bit character index table to generate a symbol ciphertext character group of a data transmission starting password with N values, and taking the value of the symbol ciphertext character group as a first-level symbol ciphertext character; and sequentially carrying out logical operation on the ASCII code values of the adjacent values in the symbol ciphertext character group. According to the method, the 16-bit character index table is set, so that the data transmission starting password can be encrypted into two kinds of ciphertext character strings, namely the first-level symbol ciphertext character and the second-level symbol ciphertext character, and the leakage risk of the data transmission starting password of the embedded host can be effectively reduced.

The invention discloses a structural circuit integrated manufacturing-oriented H-AMF multi-material model digital expression method, a storage medium and equipment, and the method comprises the steps: constructing a file header based on an XML architecture, defining a metadata region and a resource region of a structural circuit integrated model in the file header, and building a material library definition in the resource region; a compact ASCII data block is constructed in the XML architecture to serve as a unified geometric object area, and is used for storing vertexes and triangular patches of the structural circuit integrated model; introducing a vertex deduplication algorithm based on a hash table, and performing deduplication on vertexes of the unified geometric object area to obtain an index database; when the triangular patches are generated, reading a file header based on the XML architecture, obtaining material IDs corresponding to the triangular patches, and binding each triangular patch in the index database with the corresponding material ID; and writing the metadata area, the resource area and the index database of the structural circuit integrated model and the index database bound with the material ID into a disk, generating an H-AMF file, and realizing digital expression of the structural circuit integrated model.

The invention relates to the technical field of carrier-free image steganography, and discloses a carrier-free image steganography based on a diffusion model and human body posture estimation, which comprises the following steps of: S1, converting secret information into a binary sequence according to an ASCII (American Standard Code for Information Interchange) code, and taking the binary sequence as a secret sequence to be encrypted; s2, extracting a large number of human whole body images from the network, according to a pre-trained human body posture estimation model, extracting posture key point information of a target image, key point arrangement features such as an angle between an arm and a trunk and the like, grouping a series of images, and according to a binary bit number set by each image, dividing the images into 2n groups; according to the carrier-free image steganography based on the diffusion model and the human body posture estimation, the encryption information capacity of a single picture is improved, the similarity of theme contents among multiple pictures is kept, the confidentiality and robustness are enhanced, the flexibility and expandability are improved, and the information transmission and storage efficiency is optimized; and efficient, safe and hidden information hiding and transmission are realized.

The invention discloses an ultraviolet light communication system based on a transverse effect position sensitive detector, and belongs to the technical field of optoelectronic devices. Comprising a space code modulation module, an imaging lens and a signal demodulation module. The spatial coding modulation module is composed of a 2 * 2 high-frequency flicker ultraviolet LED array, a driving circuit and an imaging lens, four LED units are defined as four spatial coding states respectively, information to be transmitted is converted into an 8-bit binary sequence according to an ASCII coding rule, and the 8-bit binary sequence is split into four groups of 2-bit sub-codes; each group of sub-codes realizes information coding based on a two-dimensional space position by controlling the time sequence lightening of a single LED unit; the signal demodulation module comprises a position sensitive detector and a signal processing circuit thereof. The signal processing circuit is configured to restore a binary sub-code corresponding to an incident light spot through a method of comparing amplitude extreme values of four electrode output signals of the position sensitive detector; and then splicing the demodulated sub-codes into a complete data frame. The method is suitable for short-distance ultraviolet light communication in a complex environment.

The invention discloses a piezoelectric type Lamb wave communication method based on an adaptive threshold value. Binary data is converted into an on-off keying lamb wave signal by using a piezoelectric sensor, and the on-off keying lamb wave signal is amplified and filtered by a signal conditioning module after being propagated through a metal plate. When the data processing module continuously samples the signals, a dynamic threshold algorithm is adopted, a reference threshold is generated by initially calculating a signal amplitude average value, the average value and threshold value parameters are updated in real time in the sampling point traversing process, and self-adaptive signal segmentation is achieved. And the segmented waveform is decoded into binary data according to a coding rule, and finally the binary data are converted and output through an ASCII code. The technology can complete data transmission without depending on electromagnetic waves, and is suitable for equipment communication requirements in an electromagnetic shielding environment. The method overcomes the problem of high misjudgment rate of a traditional fixed threshold technology under the condition of low signal-to-noise ratio, realizes self-adaptive adjustment of signals, and has the advantages of high real-time performance, strong anti-interference capability, stable data transmission and the like.

The invention discloses a high-speed communication method based on an embedded instrument. The high-speed communication method comprises the following steps that S1, the instrument receives protocol data; s2, analyzing the protocol data, and extracting effective instructions in the protocol data; s3, setting an instruction buffer pool, and storing the effective instruction into the instruction buffer pool; s4, sending a protocol data receiving response to the test system; and S5, the instrument analyzes and responds to the effective instruction in the instruction buffer pool when the resource is idle, and then waits for receiving the instruction next time. According to the method, the cache thread is additionally arranged, so that temporary storage of the ASCII instruction after the instrument equipment completes VXI-11 unpacking is realized, and resource scheduling is facilitated to complete analysis and response of the ASCII instruction when the instrument is idle. Through the method, the instrument responds to the message when the resource is idle, and message blocking or instruction response failure caused by a high-priority task is avoided. The problems of instruction failure and error response during rapid receiving of instrument equipment during high-speed VXI-11 communication are effectively solved.

The application discloses a kind of relay protection device bare core program log recording method and system.The relay protection device chip used in the method and system is multicore AMP architecture chip, wherein CPU core is divided into bare core and system core operation, and there is shared memory between bare core and system core.For the log recording of non-interrupt program, the log content is converted into ASCII code using bare core printf interface, and then placed into shared memory and output by serial printing.For the log recording of interrupt program, logmsg interface is used to only place log content into queue for saving, and the data in queue is converted into ASCII code in a special information processing task, and then placed into shared memory and output by serial printing.System core log storage thread reads LOG information in shared memory, and then writes log in the form of text into power-fail-safe file system Tpsfs.The method and system of the application can fully meet the requirements of relay protection device in different execution delay requirements to complete log recording, and improve the efficiency of log recording.

The invention discloses an indole derivative doped material with host-guest room temperature phosphorescence mutual conversion characteristic, a preparation method and encryption application thereof, and belongs to the technical field of organic luminescent materials, the indole derivative doped material comprises a host material and a guest material, and the host material and the guest material are indole derivatives, different types of substituent groups are introduced into an indole skeleton, so that the photophysical properties of the material are effectively regulated and controlled, and a series of functionalized host materials and guest materials are obtained. Furthermore, the host material and the guest material are physically doped to obtain the organic room-temperature phosphorescent material which has macroscopic long afterglow characteristic and can be mutually converted between host room-temperature phosphorescence and guest room-temperature phosphorescence. The organic room temperature phosphorescent material can be used in the fields of information display, time resolution anti-counterfeiting technology, Morse password encryption, information encryption storage microarrays based on ASCII binary coding and the like.

The application provides a three-mode redundant circuit netlist compiling method and device based on state machine conversion, belongs to the technical field of anti-radiation integrated circuit netlist compiling processing, and comprises the following steps: generating a netlist ASCII text stream and a keyword-regular set by inputting core source data suitable for an anti-radiation scene, triggering a lexical analyzer, forming an ordered lexical unit sequence through lexical analysis, constructing a state transition graph and checking the state transition graph, integrating the graph and a fragment, extracting a syntax tree, converting the syntax tree into a flow graph data structure, finally generating an IR intermediate representation mapped with SoC hardware, and outputting the IR intermediate representation. The three-mode redundant circuit netlist compiling method and device based on state machine conversion are used, so that the problems of low recognition efficiency, large cost and easy deletion of redundant logic in the process of processing a three-mode redundant circuit netlist by a traditional hardware compiler are solved.

The invention discloses an intensive care early warning system based on artificial intelligence, and relates to the technical field of early warning, a first communication module is arranged to collect physical sign parameters of a target patient in real time, a second communication module is arranged to periodically collect detection data of the target patient, and the detection data is processed after collection; in the processing process, binary and hexadecimal conversion is carried out successively to obtain a sequence composed of numbers and English letters, then the numbers and the English letters are processed independently, for processing of the numbers, the numbers and 4 are subjected to addition and subtraction operation, binary numbers of the numbers are converted and limited in 00, 01, 10 and 11 in sequence, and then the numbers are processed independently. According to the method, control characters are transversely selected by English letters according to an ASCII (American Standard Code for Information Interchange) comparison table to serve as substitute characters, so that the recognizable degree of data can be effectively reduced, the risk that the data are maliciously cracked and restored is reduced, and the security and confidentiality of the data in the transmission and storage process are ensured.

The invention provides a data serialization method and device, a computer readable storage medium and electronic equipment, and relates to the technical field of data processing.The method comprises the steps that original data are converted into binary data through an improved binary serialization protocol protobuf, and the improved protobuf is coded in a GB18030 coding mode; the binary data obtained after the improved protobuf serialization is coded in a Base128 coding mode, and the binary data obtained after Base128 coding is obtained; the Base128 coding mode is that all 128 characters of ASCII (American Standard Code for Information Interchange) are used as a character set for coding; and writing a character or a character string corresponding to the binary data coded by the Base128 into the Redis. The serialization efficiency is improved, and meanwhile the occupied space of a memory is reduced.

The invention discloses a multicarrier underwater communication method based on a pulse broadening technology, which comprises the following steps of: converting information to be transmitted into a binary array with 8 bits as one byte through an ASCII (American Standard Code for Information Interchange) coding unit, changing the binary array into a new array with 10 bits as one byte and with similar occurrence times of 0 and 1 after the binary array passes through an 8 / 10B coding unit, and modulating the new array through multicarrier OOK (On-Off Keying) of a modulation unit, a broadening coefficient k is solved by a Gaussian envelope approximation and parameter solving unit, a modulated signal is broadened according to the broadening coefficient k in a broadening unit, the signal is transmitted in water and received by a receiving end, and transmitted information is restored after demodulation by a demodulation unit, 10B / 8B coding and ASCII decoding. And the obtained signal has a relatively low peak-to-average ratio, so that underwater long-distance transmission is facilitated.

The present invention relates to the field of thermal science, and in particular to a method for reconfigurable dynamic control of microscale thermal fields based on magnetic micro-nano robot clusters and a thermal encoding device. The method comprises the following steps: S1. Under the action of an ultrasonic field, the micro-nano robots are suspended and form a circular cluster; S2. An oscillating magnetic field is applied, causing the micro-nano robot cluster to transform from a circular shape into a gear shape; S3. Near-infrared light with a wavelength of 808 nm is used to illuminate the micro-nano robot cluster area, causing the micro-nano robot cluster to exhibit a thermal effect; and S4. The micro-nano robot cluster morphology is controlled by controlling the ultrasonic field and magnetic field characteristic parameters, thereby achieving reconfigurable dynamic control of the microscale thermal field within the cluster area. The thermal encoding device comprises a thermal imager, a near-infrared light source, a magnetic field generator, and an ultrasonic field generator. The present invention can achieve reconfigurable dynamic control of the microscale thermal field and can transmit information using 8-bit ASCII code through encoding and decoding processes.

A system for permanently storing and controlling a file and associated metadata on the blockchain. The system includes: a file deconstruction module configured to receive a file from an engine output and divide the associated metadata into multiple chunks of ASCII where the system generates a code-based reference for each chunk; and an encoding module where the system permanently encodes each chunk and code-based reference and associated metadata on the blockchain, where the blockchain is capable of attribution of the code-based reference and associated metadata in a single transaction, and where the system recalls the file and associated database upon a user request by assembling the chunks from known code-based references stored in a git-hub library.

The invention relates to the technical field of automobile fault diagnosis, in particular to a method and system for inquiring a fault code based on handheld diagnosis equipment and electronic equipment. The method comprises the following steps: acquiring a first original fault code; performing ASCII (American Standard Code for Information Interchange) value conversion on the first original fault code to obtain a first target fault code; performing query matching of the first target fault code in an index table to obtain target data information; the target data information comprises a second target fault code and an original index id, and the first target fault code is correspondingly the same as the second target fault code; extracting the original index id from the target data information, and performing preset system format conversion to obtain a first target index id; and performing query matching of the target index id from a pre-stored database to obtain description information corresponding to the first original fault code. According to the invention, the efficiency of querying the fault code by the handheld diagnosis equipment can be improved, so that the customer experience is improved.

The application relates to a reconfigurable processor chip architecture and application for accelerating gene sequencing, which comprises a configuration manager, a reconfigurable detection array, a post-processing and recording module, a first storage unit, a second storage unit and peripherals, the peripherals comprise a preprocessing module for converting a FASTQ file of a sample gene sequence to be detected into ASCII code; the first storage unit is used for storing the ASCII code of the sample gene sequence to be detected; the second storage unit is used for storing the ASCII code of a reference gene sequence; the configuration manager is connected with the reconfigurable detection array, the post-processing and recording module and the peripherals through a control bus; the peripherals are connected with the first storage unit and the second storage unit through the control bus; the input end of the reconfigurable detection array is connected with the first storage unit and the second storage unit, and the output end is connected with the post-processing and recording module. The application can greatly improve the sequencing speed.

The invention relates to the technical field of computer data processing, and discloses a cache-based data query analysis result optimization method and system, and the method comprises the steps: receiving a client data query request, and extracting an original parameter set; the parameters are subjected to effective cleaning and ASCII code ascending order arrangement, and a unique cache key is generated through normalized splicing and Hash operation; retrieving a cache database according to the result, and returning an analysis result if the result is hit; if the target data is not hit, returning to the source to query the underlying database, and writing the obtained target data into the cache based on an adaptive compression strategy and random expiration time, and in addition, the system establishes a mapping index of a data table and a cache key and monitors a data change event in a binary log of the database, so that active and accurate clearing of the cache is realized. According to the method, the influence of the sequence difference of the request parameters on the cache hit is eliminated through parameter standardization processing, the cache reuse rate is improved by combining adaptive storage and an active failure mechanism, the memory occupation is reduced, and the high real-time performance of data is guaranteed.

This application discloses an angle detection fault-tolerant system and method. The system includes a heterogeneous interface acquisition module, a CRC secondary verification module, a security word parsing module, a fault diagnosis decision module, a smooth switching control module, and a historical data management module. The heterogeneous interface acquisition module acquires dual-channel sensor data in parallel via ASCII and QSPI interfaces; the CRC secondary verification module independently calculates the expected CRC value based on the J1850 standard and compares it with the CRC value returned by the sensor; the security word parsing module performs hierarchical bit-domain parsing of the security word to extract multi-dimensional state information; the fault diagnosis decision module integrates the verification results and state information, and determines the fault type based on the diagnostic matrix; the smooth switching control module uses the most recent valid angle stored in the historical data management module as a reference to perform linear interpolation for smooth transition. This invention solves the problems of single-point fault risk and insufficient data integrity verification, meeting the ASIL-B / C level requirements for automotive functional safety.

This invention provides a fine-grained automatic identification method for IoT devices based on firmware simulation, relating to the field of IoT technology. The method includes: automatically collecting IoT device tags from aggregation websites using web crawling technology and constructing an IoT device tag library; automatically collecting IoT device firmware using XPath expressions combined with an ASCII-based firmware search algorithm; simulating the obtained device firmware, accessing the simulated device IP address and extracting the device fingerprint; automatically generating and matching regular expressions for positive samples based on the device fingerprint; using a binary tree-based model regular expression matching strategy for efficient and accurate model identification; extracting features from web files in the IoT device firmware using BinWalk; training the extracted features using a decision tree model; designing a tree-based rule-based scanning and identification strategy; converting the decision tree model into a rule tree; and identifying the version number of the IoT device, thereby improving the accuracy of identification.

This invention belongs to the field of measurement and analysis technology, and relates to a data processing system for a Yokogawa power analyzer based on the LabVIEW platform. The system includes a communication module, a data processing module, a data acquisition and synchronization module, and a data storage and export module. By constructing a standardized communication interface based on VISA-SCPI, an ASCII data stream structured parsing engine, a unified modeling mechanism with a shared variable library, and a native synchronous acquisition architecture based on TDMS, this invention achieves physical homogeneity, temporal synchronization, and logical isomorphism between the raw measurement data from the Yokogawa power analyzer and the multi-source sensor data from the test bench within the LabVIEW platform. Without the need for additional hardware gateways or post-processing interpolation, it achieves microsecond-level trigger alignment and frame-level parameter binding, ensuring the time synchronization of power parameters with other physical quantities. This significantly improves the automated testing efficiency, data integration capabilities, and multi-dimensional joint analysis level of the test bench.

The invention relates to a compression storage and restoration method and device for flexible direct-current valve control data, and belongs to the field of flexible direct-current power transmission of a power system. According to the method, an intermediate text format is skipped, a binary format is directly adopted to carry out real-time compression storage on high-frequency recording data, and data restoration and visualization through ASCII codes are supported. Real-time lossless recording of data with the sampling rate as high as 100 kHz can be achieved, storage space occupation and data unloading time are remarkably reduced, and an efficient technical means is provided for real-time state analysis and accurate fault positioning of the flexible direct valve control system.

A suspicious Uniform Resource Locator (URL) of a resource on the public Internet is detected by searching a part of the URL for a candidate substring, which is the longest possible substring that is in accordance with a Base64 encoding scheme. The candidate substring is converted to a candidate binary data in accordance with the Base64 encoding scheme. The candidate binary data is then converted to a candidate American Standard Code for Information Interchange (ASCII) string. The candidate ASCII string is evaluated to determine the information type of the candidate ASCII string. A determination as to whether the URL is suspicious is based at least on the information type of the candidate ASCII string.

The invention discloses an AI GC-based learning content planning method and system, and relates to the technical field of artificial intelligence generation, and the method comprises the steps: monitoring data preprocessing, analyzing and evaluating the distraction condition of a student, prompting concentration and carrying out circular detection if the student distraction occurs, obtaining learning test data after concentration, analyzing and evaluating an unqualified condition, and continuing to carry out detection if the student is qualified. If not, recording the appearance, generating a wrong question set, and prompting to complete review of the wrong question set, so as to improve the learning effect of students. According to the method, the image data is calculated through an edge detection algorithm and an eye movement tracking technology to obtain a learning abnormal factor, the image data and the sound data are calculated through an image processing technology, the edge detection algorithm and ASCI coding to obtain a cross-over factor, and the learning abnormal factor and the cross-over factor are comprehensively analyzed to judge a distraction evaluation value.