33results about How to "Increase encoding capacity" patented technology

The invention provides an optical label based information interaction system and method, and the system and method are high in directionality, long in identification distance and large in information capacity. The information comprises the information coding optical label, a data server, a mobile terminal and a wireless communication network, wherein the data server provides information, the mobile terminal decodes the information and is connected with the data server, and the wireless communication network is connected with the mobile terminal and the data server. the optical label comprises a signal unit and a positioning identification; the mobile terminal comprises an image collector and an image processing module, the image collector collects a coded image of the optical label, and the image processing module decodes the coded image; and the mobile terminal is connected with the data server via wireless communication network according to decoding information and makes information interaction. The method comprises the following steps that 1) supply information is coded; 2) the mobile terminal is used to decode the image to obtain demand information transmitted by the optical label; and 3) after decoding, interaction between demand information and supply information is realized.

The invention provides a method and device for deterministic secure quantum communication based on EPR pairs and single photons. A simple local area unitary operation is carried out on the first particle of each prepared EPR pair, and transmitted secret messages can be encoded; a message receiving end completes interaction between two legal users through auxiliary classic information, and the transmitted secret messages can be decoded by executing Bell basis measurement. The method is high in encoding capacity, high in transmission efficiency, simple in operation and easy to achieve.

The invention discloses a matrix type two-dimensional code. An image of the matrix type two-dimensional code is formed by arranging a plurality of color blocks in a rectangular array mode, a circle ofcolor blocks at the edge of the image form a positioning area, and the color blocks in the image form a coding area. The positioning area comprises an L-shaped edge and a positioning edge opposite tothe L-shaped edge. The matrix type two-dimensional code is characterized in that the the colors of the color blocks comprise at least three colors of eight colors including three RGB standard colors,four CMYK standard colors and white color, and the positioning edge is formed by alternately arranging the color blocks which are filtered by any one color channel in RGB and then are black and the color blocks which are filtered by the same color channel and then are white. On the basis of an original Datamtrix data structure, six colors and original black and white two colors are added to forma new color channel to construct the color two-dimensional code, the coding capacity is improved to 3 times of the original coding capacity, and meanwhile the color two-dimensional code is kept compatible with an existing black and white Datamtrix coding system to the maximum extent.

The invention discloses a four-photon entangled W state-based super-dense coding method for quantum signaling. The problems of low signaling coding capacity, low efficiency and poor security in a quantum communication process are mainly solved. The method is implemented by a process comprising the following steps of preparing four-photon (A, B, C and D) entangled W state as the quantum signaling, and transmitting the photons C and D to a receiver by using a transmitter; performing unitary transformation on the photons A and B to obtain 16 new quantum states; forming an orthogonal basis by using the 16 new quantum states; coding the new quantum states respectively, and sequentially transmitting photons A' and B' obtained by the unitary transformation to the receiver; and after the receiver receives the photons A' and B', arbitrarily selecting a measurement basis from the orthogonal basis, and performing joint measurement on the photons A', B', C and D to measure a new quantum state to finish coding. The method has the advantages of high coding efficiency, high capacity and high security, and can be used for a signaling system for quantum mobile communication.

The invention provides a fluorescent encoding microsphere, an array and a preparation method of the fluorescent encoding microsphere. The encoding microsphere comprises a microsphere carrier, which isa mesoporous microsphere, wherein the microsphere carrier is internally provided with at least one fluorescent marker, the fluorescent marker is formed by connecting a fluorescent dye and an intermediate substance, and the central emission wavelengths of the fluorescent dyes corresponding to the fluorescent markers are different, so that each fluorescent dye defines the coding information of onedimension of the coding microsphere.

The invention discloses a super-capacity information coding system and application thereof. The system comprises an encoding system and a decoding system which are formed by combining encoding units loaded on an encoding carrier, and a multi-system encoding unit for realizing the intensity at the same wavelength by adjusting a plurality of spontaneous Raman scattering intensities of a triple-bond compound, raman signal molecules are subjected to combined mixing in different proportions in a solution and then dropwise added to a two-dimensional planar carrier or covalently bonded to a three-dimensional resin bead carrier, and the loading process is uniform and controllable.

A two-dimensional dot matrix barcode encoding method comprises: forming a plurality of coordinate calibration blocks, a plurality of data storage blocks, a first indication block and a second indication block respectively by filling code points into the virtual code point storage blocks, wherein the first indication block and the plurality of coordinate calibration blocks are filled with a code point located in the center of the virtual code point storage blocks; and forming, by means of a combination of the first indication block and the second indication block, a direction and coordinate indication set indicative of a direction and a coordinate, wherein the second indication block is not filled with a code point or is filled, in the center thereof, with an ink code point capable of reflecting a light having a specific wavelength, and the plurality of coordinate calibration blocks are separated from each other.

The invention relates to a surface acoustic wave radio frequency electronic tag with large data capacity, which comprises a piezoelectric substrate, an interdigital transducer and a distribution-type reflection grating array, wherein the interdigital transducer and the distribution-type reflection grating array are arranged on the piezoelectric substrate, and is characterized in that a second interdigital transducer is arraned between propagation paths of a first interdigital transducer and a first distribution-type reflection grating array; a second distribution-type reflection grating arrayis arranged between pulse intervals of encoderless interval of a pulse signal of the first distribution-type reflection grating array, and the second distribution-type reflection grating array is used for forming a surface acoustic wave electronic tag for another frequency together with the second interdigital transducer. On the basis of single interdigital tranducer and single distribution-type reflection grating array structure, the electronic tag utilizes the acoustic wave propagation path and the encoderless interval of the pulse signal to add a second group of another frequency interdigital transducer and reflection grating array; and on the basis that the size of the radio frequency electronic tag is not increased, the coding capacity of the electronic tag is greatly enlarged.

A two-dimensional dot matrix barcode encoding method comprises: forming a plurality of coordinate calibration blocks, a plurality of data storage blocks and a direction indication block by filling code points into the virtual code point storage blocks, wherein the plurality of coordinate calibration blocks are filled with only one code point located in the center of the virtual code point storage block; the direction indication block is filled with at least two code points, only one code point being located in the center of the virtual code point storage block; the plurality of coordinate calibration blocks and the direction indication block are separated from each other and distributed among the plurality of data storage blocks; and code points filled in the plurality of data storage blocks are used to store data information, where M≥4, N≥4, N≥4, and M and N are both even numbers.

The invention discloses a high-capacity and metal-insensitive double layer chip-free tag antenna, which is used for coding articles in a chip-free tag system. The high-capacity and metal-insensitive double layer chip-free tag antenna comprises two layers of dielectric substrates, a split ring resonator and a spiral resonator, wherein the split ring resonator consists of three coaxial rectangular split rings, and each two adjacent split rings are connected to each other through a pair of upper and lower short connection lines; the spiral resonator consists of nine spiral bodies with the same size; each spiral body is made of copper strips through staggered screwing from inside to outside; and the split ring resonator and the spiral resonator are distributed at different heights in the same vertical plane. The tag antenna disclosed by the invention is a magnetic antenna, and is insensitive to different dielectric substrates to which the antenna is adhered. The tag antenna achieves the metal-insensitive characteristics by using a double layer structure that uses the intermediate layer to separate the air. Meanwhile, as three resonant frequency points can be increased when one unit structure is increased, the tag antenna disclosed by the invention can achieve very high coding capacity.

The invention discloses an optical coding library. The optical coding library comprises carriers with N sizes, wherein N is greater than or equal 2; each carrier comprises a subject part and object parts which are connected with the subject part; the subject part and at least one of the object parts comprise a fluorescent element; the central emission wavelength of the fluorescent element on the subject part is different from the central emission wavelength of the fluorescent element on each object part. The invention also discloses a preparation method of the carriers in the optical coding library, and the application of the carriers and the optical coding library. The optical coding library has ultrahigh coding capacity, and has the characteristics of high coding accuracy and high repeatability in application.

A two-dimensional dot matrix barcode encoding method comprises: forming a plurality of coordinate calibration blocks, a plurality of data storage blocks, a first indication block and a second indication block respectively by filling code points into the virtual code point storage blocks, wherein the first indication block and the plurality of coordinate calibration blocks are filled with a code point located in the center of the virtual code point storage blocks; and forming, by means of a combination of the first indication block and the second indication block, a direction and coordinate indication set indicative of a direction and a coordinate, wherein the second indication block is not filled with a code point or is filled, in the center thereof, with an ink code point capable of reflecting a light having a specific wavelength, and the plurality of coordinate calibration blocks are separated from each other.

The invention discloses a quantum key distribution method based on single photon superdense coding. The method comprises the following steps that a party A prepares a photon state which is randomly inan R ground state, carries out deflection operation on the photon state and then sends the photon state to a party B; the party B carries out the deflection operation on the photon state again and then returns the photon state to the party A; the party A compares a measured quantum state with originally prepared quantum state and sends a comparison result to the B party; the party A judges whether employed measurement basis is accurate or not, carries out marking if the employed measurement basis is accurate, sends marked location information to the party B and discards wrong location information; and the party A and the party B generate a shared bit string according to own information and received information. Compared with an entangled state QDKD (Quantum Dense Key Distribution) protocol, the method has the advantages that complex quantum resources and equipment are avoided, and the method is more economic and feasible.

The invention relates to a surface acoustic wave radio frequency identification tag with large coding capacity and a function of automatic error correction and an error correction method thereof. The identification tag and an identification tag reader form a surface acoustic wave radio frequency identification tag system. The identification tag comprises a piezoelectric substrate, an interdigital transducer and various reflecting gratings. The interdigital transducer and reference reflecting gratings are arranged at one end of the piezoelectric substrate, the length of the piezoelectric substrate is fictitiously divided into a plurality of slot positions with even distance, the reflecting gratings are arranged in the slot positions and respectively belong to a data area and an error correction check area, the reference reflecting gratings and the various reflecting gratings are sequentially arranged, each information carried by the identification tag of the data area is one to one corresponding to information of relative distance between every two adjacent reflecting gratings, and the identification tag of the error correction check area are arranged according to the position of the identification tag of the data area and certain rules. The surface acoustic wave radio frequency identification tag with the large coding capacity and the function of the automatic error correction has functions of automatic error detection and automatic error correction and is high in reliability.

The invention discloses a controlled quantum secure direct communication method based on five particles. A method of sending a particle to a receiver is adopted, and the transmission efficiency of communication is improved by reducing the number of particles transmitted in a quantum channel; and a sender retains 3 particles in the communication process, adopts a quantum state to encode 3 bits of information, thereby improving the encoding capacity, increasing the number of information bits exchanged by both communication parties, and improving the transmission efficiency by 60%.

A two-dimensional dot matrix barcode encoding method comprises: forming a plurality of coordinate calibration blocks, a plurality of data storage blocks and a direction indication block by filling code points into the virtual code point storage blocks, wherein the plurality of coordinate calibration blocks are filled with only one code point located in the center of the virtual code point storage block; the direction indication block is filled with at least two code points, only one code point being located in the center of the virtual code point storage block; the plurality of coordinate calibration blocks and the direction indication block are separated from each other and distributed among the plurality of data storage blocks; and code points filled in the plurality of data storage blocks are used to store data information, where M≥4, N≥4, N≥4, and M and N are both even numbers.

The invention discloses an environment-resistant chip-free tag with high scattering intensity, and relates to the field of electronic tags. Comprising a plurality of chip-free tag units and a substrate, each chip-free tag unit comprises a dielectric layer and a conductive patch layer arranged on the dielectric layer, the conductive patch layer is provided with a plurality of triangular annular gap resonant cavities, and the resonant frequency is adjusted by changing the lengths of the triangular annular gap resonant cavities. The plurality of chip-free label units are arranged on the substrate in a triangular distribution mode. The tag has the advantages that the designed triangular resonance structure is directly utilized, so that the tag has the characteristic of insensitivity to the polarization direction and has a higher Q value. In a 100MHz frequency band of 3.45-3.55 GHz, three or more label codes can be realized, and the frequency spectrum utilization rate is higher. The utilization rate of the label medium substrate is higher, and higher coding capacity can be realized in a smaller size, namely, the data capacity density is higher. The label is simpler in structural design and easier to process.

The invention discloses an indoor positioning method based on three-dimensional code mapping. The method comprises the following steps: (S100) enabling a base station to estimate a channel according to a received uplink signal, generate a feature vector matrix of an antenna group Antk, map the feature vector matrix of the antenna group Antk into a three-dimensional code, and match the three-dimensional code to obtain an approximate code word three-dimensional code, so as to obtain a precoding matrix W of the antenna group Antk; (S200) carrying out beam forming on a base station transmitting signal according to the precoding matrix W; (S300) obtaining distances lk between the mobile terminal and four antenna groups Antk which are not on the same plane through a distance loss model, obtaining four balls with an antenna group Anti k as a circle center and a distance lk as a radius, establishing a three-dimensional space spherical surface equation set, solving by using a corrected maximum likelihood method to obtain a three-dimensional coordinate, and correcting a z value of the three-dimensional coordinate to obtain an estimated value of the three-dimensional coordinate of the mobile terminal. According to the method, the indoor real-time spatial positioning is realized by utilizing the distributed antenna and combining a beam matching mode of three-dimensional code mapping.

The invention discloses a surface acoustic wave device with the integrated function of radio frequency identification and wireless sensing and its working method. , two of the channels realize the integrated function of radio frequency identification and temperature sensing, and the other two channels realize the function of parallel sensing of two gases, which can be used for cold chain foods such as refrigeration and freezing or foods with clear temperature requirements. It can also be further used in modified atmosphere packaging food. Among multiple reflective gratings of the SAW device, the reference reflective grating is used to eliminate the influence of distance on the phase measurement results, and the temperature compensation reflective grating is used to compensate the influence of temperature on the phase measurement results. The present invention is characterized in that information traceability and quality inspection in the field of food safety can be realized simultaneously by only one passive device, and the function is easy to realize and has high cost performance.

The invention discloses an indoor positioning method based on four-dimensional code mapping, and the method comprises the steps: (S100), carrying out the Kronecker product of a horizontal-dimensionalfeature vector matrix and a vertical-dimensional feature vector matrix, generating a feature vector matrix of an antenna group, mapping the feature vector matrix into a four-dimensional code, carryingout the matching, obtaining an approximate code word four-dimensional code, and obtaining a pre-coding matrix; (S200), performing beam forming on the base station transmitting signal according to theprecoding matrix of the mobile terminal; and (S300), forming a virtual cell taking the mobile terminal by the to-be-positioned mobile terminal and the antenna group as the center; and forming a van virtual cell taking the mobile middle end as the center with surrounding mobile terminals, constructing an estimation function to obtain a positioning target function, solving the positioning target function by adopting a nonlinear least square algorithm, and taking the coordinate when the positioning target function takes the minimum value as the coordinate of the to-be-positioned mobile terminal.According to the method, beam matching of four-dimensional code mapping is combined with a virtual cell cooperation mode, and indoor real-time space positioning is achieved.

The invention discloses a quantum key distribution method based on single photon superdense coding. The method comprises the following steps that a party A prepares a photon state which is randomly inan R ground state, carries out deflection operation on the photon state and then sends the photon state to a party B; the party B carries out the deflection operation on the photon state again and then returns the photon state to the party A; the party A compares a measured quantum state with originally prepared quantum state and sends a comparison result to the B party; the party A judges whether employed measurement basis is accurate or not, carries out marking if the employed measurement basis is accurate, sends marked location information to the party B and discards wrong location information; and the party A and the party B generate a shared bit string according to own information and received information. Compared with an entangled state QDKD (Quantum Dense Key Distribution) protocol, the method has the advantages that complex quantum resources and equipment are avoided, and the method is more economic and feasible.

The invention discloses a preparation method of encoding microspheres, comprising the steps of coating a sacrifice layer on an underlay, growing or preparing a microsphere material layer compounded by a single layer or multiple layers in a depositing mode on the surface of the sacrifice layer, carrying out semiconductor microprocessing procedures of photoresistive spread coating, photodevelopment, corrosion and cleaning for the microsphere material layer to produce an encoding micro pattern or array, carrying out photoetching again according to the required microsphere size of the preparationand cleaning to remove the microsphere material layer outside the microsphere outline, selecting a liquid capable of dissolving the sacrifice layer, submersing the underlay with the sacrifice layer inside and the encoding microsphere into the liquid, and finally releasing the microspheres differently encoded to suspend in the liquid. The invention realizes the preparation of the encoding micropheres through a microprocessing technology to improve the capacity of the microsphere encoding and can adopt a general fluorescence microscope to detect so as to effectively reduce the cost for biological analysis; in addition, the preparation process has better repeatability and is conveniently actualized.

The invention provides a novel wide temperature range temperature measurement method of a SAW RFID tag. The method comprises steps of distributing frequency difference at the biggest frequency interval of searching signals emitted by a reader, and selecting frequency difference of multiple searching signals meeting the condition that phase difference fuzziness resistance is performed for construction of a congruent equation; selecting two reflecting gratings in any position in the SAW RFID tag; extracting fuzzy phases of echo signals generated by the reflecting gratings of each frequency searching signal so as to obtain the fuzzy phase difference corresponding to each group of frequency difference of each reflecting grating; through the multiple groups of frequency difference and the fuzzy phase difference, constructing the congruent equation to achieve phase difference fuzziness resistance; in the standard temperature, calibrating fuzziness-free phase difference between the reflecting gratings; and comparing the fuzziness-free phase difference between the reflecting gratings in the actual environment temperature where the SAW tag is arranged with the fuzziness-free phase difference between the reflecting gratings in the standard temperature, thereby obtaining the temperature change quantity relative to the standard temperature and achieving temperature measurement.

The invention discloses a controlled quantum secure direct communication method based on five particles, which adopts the method of sending one particle to the receiver, and improves the transmission efficiency of communication by reducing the number of particles transmitted in the quantum channel; 3 particles use a quantum state to encode 3 bits of information, thus increasing the encoding capacity, increasing the number of information bits exchanged by the communication parties, and increasing the transmission efficiency to 60%.

The invention relates to a surface acoustic wave radio frequency electronic tag with large data capacity, which comprises a piezoelectric substrate, an interdigital transducer and a distribution-type reflection grating array, wherein the interdigital transducer and the distribution-type reflection grating array are arranged on the piezoelectric substrate, and is characterized in that a second interdigital transducer is arraned between propagation paths of a first interdigital transducer and a first distribution-type reflection grating array; a second distribution-type reflection grating arrayis arranged between pulse intervals of encoderless interval of a pulse signal of the first distribution-type reflection grating array, and the second distribution-type reflection grating array is used for forming a surface acoustic wave electronic tag for another frequency together with the second interdigital transducer. On the basis of single interdigital tranducer and single distribution-type reflection grating array structure, the electronic tag utilizes the acoustic wave propagation path and the encoderless interval of the pulse signal to add a second group of another frequency interdigital transducer and reflection grating array; and on the basis that the size of the radio frequency electronic tag is not increased, the coding capacity of the electronic tag is greatly enlarged.

Provided in the present invention are an optical tag-based information interaction system and interaction method characterized by strong directionality, long identification distance and large information capacity. The system comprises an optical tag for information coding, a data server for providing information, a mobile terminal for decoding information and connecting with the data server, and a wireless communication network for connecting the mobile terminal with the data server; the optical tag comprising a signal unit and a positioning tag; the mobile terminal comprising an image acquisition device and an image processing module, the image acquisition device being used for acquiring coding image of the optical tag, the image processing module being used for decoding the coding image; the mobile terminal connecting data server interaction information by means of a wireless communication network according to the decoding information. The method comprises the following steps: step I, coding supply information; step II, for demand information, obtaining information transmitted by the optical tag by using the mobile terminal to decode an image; step III, following decoding, achieving an interaction between the demand and supply information.

The invention relates to a multi-segment barcode nanorod and a preparation method thereof. The preparation method is as follows: sequentially immerse a multi-segment nanorod with a segment number s≥3 and wherein n segments have A on the surface, and sequentially immerse m kinds of nanoparticles with B on the surface. In the solution, n≥2, 2≤m≤n, A and B can form an adsorption force. By controlling the types of A and B, m kinds of nanoparticles can be combined with different segments through the adsorption force to make multi-segment barcode nanorods ; The prepared multi-segment barcode nanorods are mainly composed of multi-segment nano-rods and nanoparticles adsorbed on it by adsorption force. The multi-segment nano-rods include more than three segments, and the types of nanoparticles are more than two, different types The nanoparticles are located on different segments of the multi-segmented nanorods. The preparation method of the multi-segment barcode nano-rod of the present invention is simple, easy to implement, low in cost, and can be prepared in batches; the prepared multi-segment barcode nano-rod has a lot of coding information and a large coding capacity.

A railway system with at least one track having at least two rails and a method for encoding data for this railway system are disclosed. Railway signaling systems are located proximate to the tract for controlling railway cars moving along the rails. The railway system also includes safety systems associated with the railway signaling systems for exchanging data between the safety systems for safely controlling the railway signaling systems. The data are exchanged bidirectionally by signal pulses, whereby digital electrical signals are transmitted via the two electrically conducting rails. For encoding the data, each data point is formed from one or more signal pulses within a predetermined cycle time which is divided into time intervals. The encoding capacity can be enhanced, without significantly increasing the complexity, by using electrical signals that contain the encoded data in each time interval in form of at least one of three different signal states.