52results about How to "Large encoding capacity" patented technology

The invention discloses an absolute grating ruler multi-track encoding method. In order to solve problems, such as the accumulative error of incremental encoding and the hardware complexity of absolute encoding, etc., in the micro-nano machining measurement process, the invention adopts an absolute encoding method based on p-element M-sequence pseudo-random codes suitable for single track and multiple tracks. The encoding method is suitable for a straight line absolute position encoder, and a disk absolute angle encoder, locating can be performed at any time, and the boot back-to-zero operation does not needed. Moreover, an incremental encoding strip is provided, so measurement accuracy can be improved by suing the phase segmentation method. The encoding method is an absolute position encoding method has advantages of easy generation, replication and processing, large encoding capacity, low decoding cost and macro-micro composite performance. The encoding method comprises ordinary single-track binary M-sequence absolute grating ruler straight-line encoding, a M-sequence disk encoder, code expanding method multi-code-channel pseudo-random code straight-line encoding and code expanding method p-element M-sequence pseudo-random codes, and the maximum encoding method is obtained by combing the above the encoding methods.

The invention relates to coding sign points high in capacity and high in robustness. The coding sign points comprise a positioning sign position, an initial sign position and coding positions. The initial sign position and the coding positions are evenly distributed on a circle the center of which is the positioning sign position. The positioning sign position is equipped with a positioning sign point. The initial sign position is equipped with an initial sign point. The coding positions are equipped with coding points. Different coding sign points are formed by a situation whether the coding points are arranged in the coding positions or not. The positioning sign point, the initial sign point and the coding points form a circle, and can be differentiated from each other in area. Compared with the prior art, the coding sign points have the beneficial effects that: 1, sign positions are easy to identify; 2, the coding capacity is high; 3, the coding positions that are on the same line with the positioning sign position and the initial sign position are equipped with the coding points, and the included angle between every two adjacent coding points is less than 180 degrees, so the uniqueness of angle identification is exhibited and the identification accuracy is improved; and 4, the decoding accuracy is greatly improved.

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 provides a two-in-one commodity barcode which comprises a one-dimensional barcode printed on an object and consisting of bars and gaps which are arranged. The bars are divided into deep-color line segments and light-color line segments. The positions, or / and the number, or / and the lengths of the light-color line segments are converted into variable data including a commodity traceability code after being recognized by light-color line segment decoding software. The two-in-one commodity barcode avoids color digital printing, is suitable for monochromatic printing, can reduce equipment investment, can increase production speed, can reduce manufacturing cost, and it is not required to replace conventional laser scanner hardware. The commodity barcode of a commodity using the two-in-one commodity barcode has two functions including a commodity barcode and a traceability code.

The invention discloses an intelligent calibration method for internal and external parameters of a binocular camera based on a coding plane target, and the method comprises the steps: employing two cameras to shoot coding plane targets in different attitudes in a space at the same time, and obtaining a plurality of coding plane target images; respectively obtaining a sub-pixel-level coordinate, a unique coding sequence number and a target coordinate of each calibration angular point in the coding plane target image by using a coding plane target decoding method; obtaining G1 left camera calibration images and G2 right camera calibration images according to a set threshold value of the number of calibration angular points and a space attitude threshold value of the coding plane target; and respectively solving internal and external parameters of the two cameras and a rotation and translation relation between the left camera and the right camera. According to the invention, the automatic calibration of the binocular camera can be realized, the calibration of the binocular camera can be completed by fully utilizing the local coding plane target image when the calibration is limited by the range of a public view field, and the applicability and robustness of the calibration of the multi-camera are improved.

The invention relates to a segment thickness coded bar code nanorod and a preparation method thereof. The preparation method includes: in the process of constructing a multi-segment nanorod, when eachlayer of polymer film is deposited, controlling the inclination angle of a substrate relative to a horizontal plane to a certain degree and not 0 completely; the prepared segment thickness coded barcode nanorod is a multi-segment nanorod which comprises two or more segments and has at least one segment with non-uniform in thickness, and the non-uniformity means gradual change along the directionperpendicular to the length direction of the multi-segment nanorod. The preparation method of the segment thickness coded bar code nanorod is simple and practicable and low in cost, and can achieve batch preparation. According to the segment thickness coded bar code nanorod, at least one segment is uneven in thickness, and the encoding capacity of the bar code nanorod is greatly increased by introducing morphological factors into a nanorod array.

The invention relates to an offset plate, a manufacturing method of the offset plate, and a method for applying one-dimensional barcodes. The manufacturing method comprises the following steps: forming the offset plate which is provided with a plurality of first one-dimensional barcodes, wherein at least two first one-dimensional barcodes have same bar and blank defining information; and overlaying at least two pieces of different color information and / or grey information on the first one-dimensional barcodes. As the manufacturing method of the offset plate is adopted, the special one-dimensional codes printed by the prepared offset plate are overlaid with the colorful information and / or grey information, so that the coding capacity is expanded on the basis of maintaining the characteristics of the one-dimensional code, and therefore, one batch is identified by one code, and an additional value is brought to application such as traceability for achieving that one batch is identified by one code for manufacturers.

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 provides a commodity bar code with hidden variable data and a formation method of the commodity bar code. The bar code comprises a one dimensional bar code which is printed on a bearing object and formed by bars, vacancies and arrays thereof. Breaking points are printed on the bars or the vacancies. After positions or / and quantity or / and lengths of the breaking points are identified by a breaking point decoding software, variable data including commodity tracing coding can be identified. According to the invention, color digital printing is avoided; the commodity bar code and the formation method are suitable for monochromatic printing; investment of devices can be reduced; production speed can be improved; manufacturing cost can be reduced; and there is no need to replace current laser scanner hardware.

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 dot-matrix two-dimensional code and coding and identification methods for the dot-matrix two-dimensional code. A preset number of code points are distributed on the dot-matrix two-dimensional code; at least one code area is set in the dot-matrix two-dimensional code, wherein the code area comprises at least one data column and at least one positioning column, and the datacolumns and the positioning columns are periodically and alternatively arranged; reference points are computed according to standard positioning points on the periphery of data points; the size and the direction of vectors from the reference points to the data points are computed; code data is formed according to the size and the direction of the vectors; all the code points in the code areas aresegmented out in the identification process, the positioning columns and the data columns are identified, the size and the direction of the vectors from the reference points to the data points are computed, the code data is identified, and operation corresponding to the code data is carried out. According to the dot-matrix two-dimensional code and coding and identification methods for the dot-matrix two-dimensional code, the data columns and the positioning columns are only required to be in line in one direction basically, more data information can be contained, the coding capacity is large,the dot-matrix two-dimensional code adapts to large optical imaging distortion, the visual interference on the human eyes is small, and the identification mode is simple and stable.

The invention relates to coding sign points high in capacity and high in robustness. The coding sign points comprise a positioning sign position, an initial sign position and coding positions. The initial sign position and the coding positions are evenly distributed on a circle the center of which is the positioning sign position. The positioning sign position is equipped with a positioning sign point. The initial sign position is equipped with an initial sign point. The coding positions are equipped with coding points. Different coding sign points are formed by a situation whether the coding points are arranged in the coding positions or not. The positioning sign point, the initial sign point and the coding points form a circle, and can be differentiated from each other in area. Compared with the prior art, the coding sign points have the beneficial effects that: 1, sign positions are easy to identify; 2, the coding capacity is high; 3, the coding positions that are on the same line with the positioning sign position and the initial sign position are equipped with the coding points, and the included angle between every two adjacent coding points is less than 180 degrees, so the uniqueness of angle identification is exhibited and the identification accuracy is improved; and 4, the decoding accuracy is greatly improved.

The embodiment of the invention provides an identification code coding method, which comprises the following steps: determining at least two adjacent to-be-coded areas according to object information contained in a carrier object, wherein each to-be-coded region comprises m * n blocks, and m and n are positive integers, determining a coordinate correction block in each to-be-coded region, under the condition that the coordinate correction blocks in the current to-be-coded area are not distributed in the same column and the coordinate correction blocks in the adjacent to-be-coded area of the current to-be-coded area are not distributed in the same row, determining a direction indication block and a data storage block in each to-be-coded area, and adding corresponding micro-image units to the coordinate correction block, the direction indication block and the data storage block to generate an identification code corresponding to the object information.