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.

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 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.