6results about How to "Increase encoding capacity" patented technology

The invention discloses an optical communication method using orbital angular momentum multiplexing coding and based on transfer learning decoding, and relates to the technical field of optical communication, and the method comprises the steps: converting a binary bit stream corresponding to a to-be-transmitted image into a plurality of code element symbols according to a preset coding scheme; the preset coding scheme comprises a one-to-one correspondence relationship between each code element symbol and each multiplexed light beam in the light beam set; the light beam set comprises orbital angular momentum multiplexing light beams formed by superposition of orders and weights of different orbital angular momentums; obtaining a multiplexed light beam according to the spiral phase diagram; carrying out coaxial interference on the multiplexed light beam and the Gaussian plane wave to obtain an interference light beam; the interference light beam is interfered by the atmosphere to obtain an interfered interference light beam; inputting the intensity diagram of the interfered interference beam into the trained transfer learning network to obtain an orbital angular momentum spectrum; and recovering the to-be-transmitted image according to the orbital angular momentum spectrum and the preset coding scheme. According to the invention, the coding capacity and efficiency can be improved, the bit error rate is reduced, and reliable transmission is realized.

The invention discloses an aggregation-induced luminescence magnetic coded microsphere based on in-situ polymerization coating and a preparation method and application thereof; the aggregation-induced luminescence magnetic coded microsphere comprises an AIE polymer microsphere and a magnetic particle; the AIE polymer microsphere is obtained by embedding an AIE molecule in a blank polymer microsphere through an in-situ polymerization coating method, and the amount of the AIE molecule in the in-situ polymerization coating method is 0.01-10wt% of the amount of the blank polymer microsphere; the magnetic particle is deposited on the surface of the AIE polymer microsphere through an in-situ precipitation method of an iron salt, and the amount of the iron salt in the in-situ precipitation method is 3-30wt% of the amount of the blank polymer microsphere. The CV value of the flow fluorescence signal and the CV value of the flow FCS of the aggregation-induced luminescence magnetic coded microsphere of the invention are both less than 10%, and the coding peak is ≥10; an important fluorescent material is added to the coding element, and a new strategy is provided for the core raw materials of the protein biochip.

The present invention discloses an aggregation-induced luminescence magnetically encoded microsphere based on active swelling and a preparation method and application thereof; the aggregation-induced luminescence magnetically encoded microsphere comprises an AIE polymer microsphere and a magnetic particle; the AIE polymer microsphere is obtained by embedding an AIE molecule in a blank polymer microsphere by an active swelling method, and the amount of the AIE molecule in the active swelling method is 0.01-10wt% of the amount of the blank polymer microsphere; the magnetic particle is deposited on the surface of the AIE polymer microsphere by an in-situ precipitation method of an iron salt, and the amount of the iron salt in the in-situ precipitation method is 0.1-25wt% of the amount of the blank polymer microsphere; and the ratio of the mass amount of the AIE molecule to the mass amount of the iron salt is 0.0004-2. The CV value of the flow fluorescence signal of the magnetically encoded microsphere of the present invention and the CV value of the flow FCS are both less than 10%, and the encoding peak is ≥9 weight; an important fluorescent material is added to the encoding element.

This invention discloses a method for encoding structured light patterns, a structured light projection module, and a three-dimensional measurement system, belonging to the field of optical measurement. Addressing the problem of fixed and inaccurate structured light encoding units in existing methods, this invention provides a method for encoding structured light patterns. The method divides the structured light pattern into multiple types of grid units, forming a grid encoding group with a predetermined number of consecutively arranged grid units. The grid encoding group is encoded based on the type of each grid unit, ensuring that each grid encoding group has a unique and non-repeating code. The code of the grid encoding group maps to its spatial position within the structured light pattern. Decoding includes acquiring the structured light pattern, determining the type of each grid unit, and matching the grid encoding group with the encoding set to obtain its position. This invention achieves flexible, high-density, and highly occlusion-resistant absolute position encoding by uniquely and non-repeating grid encoding groups composed of multiple consecutive grid units, making it suitable for high-precision three-dimensional measurement.

The application provides a quantum dot magnetic fluorescent encoding microsphere and a preparation method thereof. The quantum dot magnetic fluorescent encoding microsphere comprises a parent sphere, N layers of child spheres on the surface of the parent sphere; N is an integer greater than 1; each layer of child sphere only contains quantum dots of one wavelength, and different layers of child sphere contain quantum dots of different wavelengths; the child sphere is connected with the parent sphere through a chemical covalent bond formed by the reaction of carboxyl and amino, and the child sphere is connected with the child sphere of the adjacent layer through a chemical covalent bond formed by the reaction of carboxyl and amino; the synthesis of the child sphere is achieved by taking mesoporous silica nanospheres or solid silica nanospheres as templates, loading quantum dots on the surface of the templates, and then coating silica to obtain the child sphere; the quantum dots of each layer of child sphere are the same, the N layers of child sphere contain m kinds of quantum dots, and m is less than or equal to N. The quantum dot magnetic fluorescent encoding microsphere has a smaller variation coefficient and a higher encoding capacity.

This invention discloses a surface acoustic wave (SAW) tag structure using a single mask and its encoding and recognition method. All coded tags are made using the same mask, and the tag is encoded by different external capacitors. The SAW tag includes multiple pairs of reflective gratings. Each pair consists of a reference reflective grating and a load reflective grating with an external load capacitor. The capacitance value of the load capacitor has multiple options, corresponding to the possible codes for each reflective grating pair. Since the reflectivity of the load reflective grating changes with the external capacitor, the encoding value of the reflective grating pair is obtained by the amplitude ratio of the two echo pulse signals corresponding to the load reflective grating and the reference reflective grating, and the encoding of the SAW tag is finally identified. The advantages of this invention are that it requires only one mask and can dynamically expand the encoding capacity. Its recognition method not only eliminates the influence of distance but also avoids the coupling effect between the encodings of different reflective grating pairs.