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

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 relates to an LDPC (Low Density Parity Code)-based method for encoding and decoding two dimensional bar codes, comprising the following steps of: obtaining input information according to encoding type process of the input binary data information; carrying out lengthening compression or fixed-length compression on the input information; calculating an information length required for storing according to a compressed result, obtaining the information to be encoded according to the encoding type and the compression type; carrying out LDPC encoding compression on the information to be encoded; integrating the compressed result and the version information to obtain the compressed information; and setting a flag bit and generating a two dimensional bar code image. The encoding method has large information capacity and strong error correction capability; the aspect ratio can be optionally set; and various types of encoding are supported and the locating is easier.

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 an acoustic surface wave radio frequency tag which is characterized in that an interdigital transducer is manufactured on a piezoelectric substrate, and a series of reflecting gratings are arranged behind the interdigital transducer; the reflecting gratings can be arranged in one row or multiple rows; the time interval from the interdigital transducer to the reflecting pulse of the first reflecting grating is set as a blind area, and the position of the first reflecting grating is determined according to the size of the blind area; in order to correct the influence ofthe uncertain environment temperature, two or three reflecting gratings are arranged generally, wherein one or two phase delay time intervals among the reflecting gratings are accurately known under the specific standard temperature and are constants irrelevant to code values, and each phase delay time interval between other adjacent reflecting gratings is used for representing different tag codes; and the phase delay time intervals among the reflecting gratings are limited, are not definitely used for directly representing code values, and can be possibly used for self-checking, self-correction or anti-collision and other purposes of coded data. The invention can obtain maximal coding capacity under the same information space and frequency bandwidth.

The present invention is multiple-feedback information anti-fake label and corresponding intelligent informatino anti-fake service system. The information anti-fake label consists of observed label with double feedback cipher and information checking label comprising bar code and sectional feedback code. The intelligent information anti-fake service system consists of information anti-fake platform and connected checking terminal, the information anti-fake platform includes FSK access server, AAA server, information anti-fake central processing machine and data base server; and the private intelligent checking terminal includes PSTN, scanning input and FSK code information. The present invention has very high commodity anti-fake checking rate.

The invention discloses a chip-free label of a gap ring structure. The chip-free label is composed of an upper conducting layer and a lower dielectric layer. The upper conducting layer is attached to the upper surface of the lower dielectric layer. The chip-free label of the gap ring structure is mainly characterized in that rectangular gap rings are etched or printed on the conducting layer, a reader-writer is utilized for receiving an RCS (Radar Cross-Section) reflected by the label, and encoding information of the label is obtained. The rectangular gap rings with different edge lengths correspond to specific resonant frequency, and different resonant frequencies can be obtained by changing the edge lengths of the rectangular gap rings. According to various combinations that the rectangular gap rings with the different edge lengths exist or are absent, various frequency spectrum signatures are obtained on the frequency spectrum, and multi-form encoding states can be formed by means of the frequency spectrum signatures. The chip-free label of the gap ring structure can be used for management of goods in supermarkets and logistics, can completely replace bar codes due to the ultra-low cost, and meets the requirement of rapid development of the internet of things.

The invention discloses a coaxial rectangle ring-based dual-polarized chipless RFID tag antenna, which is used for encoding an article in a chipless tag system and comprises a dielectric substrate, an X polarization resonator and a Y polarization resonator, wherein the X polarization resonator comprises four coaxial rectangle rings; the Y polarization resonator is obtained by rotating the X polarization resonator at 90 degrees along the clockwise direction; and the X polarization resonator and the Y polarization resonator are printed on the dielectric substrate and are distributed on the same horizontal plane in a diagonal line. The RFID tag antenna disclosed by the invention is a magnetic antenna and is insensitive to different adhered dielectric substrates. Meanwhile, the RFID tag antenna disclosed by the invention is the dual-polarized antenna; the antenna can be repeatedly used for encoding within a same frequency range; and the encoding capacity of the antenna is improved.

The invention discloses an indoor positioning encoding device, an indoor positioning encoding system, an indoor positioning video decoding device and an indoor positioning video decoding method based on an LED (Light-emitting Diode). The encoding device comprises a controller, an LED beacon light and a clock module, wherein the LED beacon light comprises three LED lamps and three drive power supplies; each LED lamp is connected with the controller through one drive power supply; lights emitted by the three LED lamps have different light primary colors; the clock module is used for producing a clock signal required for encoding; the controller produces three routes of encoding signals under the action of the clock module so as to send the signals to the three drive power supplies respectively; codons of the three routes of encoding signals are the same, but 0 to N-1 codons is delayed between each two routes of encoding signals; the LED lamps give out lights under the drive of the drive power supplies. Small brightness variation on three primary colors i.e. red, blue and green is utilized for encoding, so that the system encoding capacity is increased; meanwhile, three encoding channels adopt the same codons, and the average brightness and the color temperature are relatively fixed after the three-color LEDs are mixed, so that the flickering feeling of the LED beacon light brought to people is reduced.

The present invention provides a 3D code and a method for recognizing the 3D code. The 3D code of the present invention comprises a 3D code surface, wherein the 3D code surface comprises an identification unit having three dimensions, and at least two colors are provided in the identification unit. The 3D code can be printed by 3D printing technology or laser engraving technology, or machining technology, to identify convex and concave features on two-dimensional codes by using double cameras, and to encode 3D codes by computer, so that 3D codes can be recognized by 3D codes, and the encodingcapacity of 3D codes is larger than that of two-dimensional codes and three-dimensional codes. Moreover, the 3D code of the invention is simple to manufacture, and greatly increases the capacity of storing the information in a carrier similar to the 3D code in the future world.

The invention discloses a large-capacity surface acoustic wave radio frequency tag. Dispersion energy converters and reflectors are manufactured on piezoelectric substrate materials; sound absorption glue which is used for reducing redundant sound reflective signals coats on two end surfaces of the piezoelectric substrate materials; the piezoelectric substrate materials are in bi-pass structures; each channel is formed by one dispersion energy converter and the plurality of reflectors; an antenna is a bipolar antenna; two arms of the antenna are arranged on bilateral sides of the dispersion energy converters. The antenna converts inquiry signals sent from a reader to sound signals after receiving the inquiry signals, the sound signals reflected by the reflectors are transmitted back to the energy converters, and then the sound signals are radiated through the antenna after being converted into electrical signals. The center frequency of the dispersion energy converters is 600 MHz, the dispersion bandwidth is 250 MHz, and the dispersion time width is 0.25Mus. Each channel is provided with 10 reflectors. The large-capacity surface acoustic wave radio frequency tag can achieve far operating distance, large coding capacity and wireless and passive and the like functions and can work under severe environments such as intense radiation, high pressure and poisonous environments.

The invention provides a method for preparing a tricolor coding microsphere composition. The method comprises the following steps: 1, preparing a sub-sphere; 2, preparing a mother sphere; and 3, assembling the sub-sphere and the mother sphere to form the microsphere composition, wherein at least three fluorescent substances are loaded on the microsphere composition, and at least one of the at least three fluorescent substances is a rare earth complex. The tricolor coding microsphere composition prepared through the method makes mono-color laser simultaneously excite tricolor fluorescence in order to carry out multicolor coding.

The invention discloses a Chinese character pronunciation and shape input method of computers and mobile phones, and solves the problems of high pain points of a pinyin input method and a five-strokeinput method, or high ratio of characters and words with the same code, frequent word selection on a screen, or memorization of a large number of etymons, difficult learning, fast forgetting, incapability of mainly inputting words, and influence on input speed. The key points of the technical scheme are as follows: 1, codes are not specially set for etymons, and the used codes are limited in a first letter of pinyin of a character, a first letter of pinyin when a character forming component (namely, a character-in-character) independently forms the character, and preset key name English letters serving as codes of '-', '|', 'left-falling', 'right-falling' and 'yi' of stroke types of Chinese characters; 2, the input characters and words can be coded by using the brief codes, and only the brief codes are reserved in the coding table, so that a user only needs to input the coded brief codes.

The present invention discloses an invisible fluorescent anti-counterfeiting method and an anti-counterfeiting marker, moire pattern encryption information is embedded into a color separation channelof a fluorescent color image, the formed invisible image only shows a full-color effect under the excitation of a special light source, and coded information hidden in a specific position of the colorimage is recognized through filtering color separation and expert unlocking. According to the invisible fluorescent anti-counterfeiting method based on Moire pattern encryption, multi-dimensional information coding in an invisible image is achieved, the invisibility is good, a decoded pattern is clear, the invisible fluorescent anti-counterfeiting method and the anti-counterfeiting marker have the advantages of being low in cost, difficult to forge, easy to popularize and the like, the anti-counterfeiting marker is suitable for batch production, and the product is endowed with the multiple anti-counterfeiting functions of two-line anti-counterfeiting and three-line anti-counterfeiting.

This invention discloses a method for direct quantum communication transmission in steps safely utilizing the coherence and non-locality of tangling particles to load the effective information onto the quantum state directly in terms of a coding way agreed on by send/receive parties to transmit the effective information on the quantum channel in steps. Transmission in steps means that at least a set information of tangling particles in a same quantum state is divided into two related particle sequences, the two sides transmit one particle sequence first then the send party codes its own particle sequence and sends it to the receiver to be read out by a joint measurement device.

A wireless remote control based automatic control method for preventing random dumping relates to a control device for the dumper. The technical scheme adopted by the method is that a wireless remote control locking device is mounted on each dumper, and a lifting device of the dumper is electically connected with a relay of the wireless remote control locking device; when the wireless remote control locking device is in a locked state, the lifting device of the dumper is disconnected, and loading objects can not be dumped at anywhere rather than the dumping place, so that random dumping is radically avoided; a wirelss remote control unlocking device is mounted on the dumping place; only if the wirelss remote control locking device receives wirelss remote control unlocking information sent by the wirelss remote control unlocking device, the circuit of the lifting device of the dumper can be changed to be in a connected state in a specific time, and the loading objects can be dumped in the specific time; and once the dumping is completed in the specific time, the wireless remote control locking device of the dumper automatically returns to the disconnected state.

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.