92results about How to "Reduce code length" patented technology

The invention discloses a cascade hydropower station group optimized dispatching method based on an improved quantum-behaved particle swarm algorithm. The problems that local optimum happens to the quantum-behaved particle swarm algorithm at the later iteration period due to premature convergence for the reason that population diversity is decreased, and an obtained hydropower station group dispatching scheme is not the optimal scheme are mainly solved. The hydropower station group optimized dispatching method based on the improved quantum-behaved particle swarm algorithm is characterized by comprising the steps that first, power stations participating in calculation are selected, and the corresponding constraint condition of each power station is set; then, a two-dimensional real number matrix is used for encoding individuals; afterwards, a chaotic initialization population is used for improving the quality of an initial population, the fitness of each particle is calculated through a penalty function method, the individual extreme value and the global extreme value are updated, an update strategy is weighed, the optimum center location of the population is calculated, neighborhood mutation search is conducted on the global optimum individual, the positions of all the individuals in the population are updated according to a formula, and whether a stopping criterion is met or not is judged. The hydropower station group optimized dispatching method based on the improved quantum-behaved particle swarm algorithm is easy to operate, small in number of control parameters, high in convergence rate, high in computation speed, high in robustness, reasonable and effective in result, and applicable to optimized dispatching of cascade hydropower station groups and optimal allocation of water resources.

This image compression applies a lossless compression algorithm and a lossy compression algorithm to code the differential value of the adjacent pixels. If lossy algorithm is selected, it codes the differential value of the present pixel and the reconstructed previous pixel. In quantizing the differential value of adjacent pixel components, a variable range of interval of value is predetermined with smaller interval range in values closer to “0” and larger interval range farer from “0”. The region with less mean variance, less quantization error will be allowed and the region with larger mean variance, more quantization error is allowed

A motion vector encoding apparatus includes a detection unit for detecting motion vectors of respective blocks of a predetermined size and a range of the motion vectors; a first storage unit for storing therein the detected motion vectors; and a generation unit for generating motion vector predictors from the motion vectors outputted from the first storage unit. The apparatus also includes a calculation unit for calculating an average value of differential vectors between the motion vectors outputted from the first storage unit and the motion vector predictors. Moreover, the apparatus includes a determination unit for determining a parameter representing a motion vector encodable range based on the average value of the differential vectors calculated by the calculation unit; and an encoding unit for encoding the motion vectors based on the differential vectors and a parameter representing an encodable range outputted from the determination unit.

An instruction coding method and an instruction coding system comprise: an accessing operation instruction and a calculating operation instruction which are based on long immediate values are compressed to 32-bit length to be taken as a first instruction; the accessing operation instruction that is not based on the long immediate values is compressed to 16-bit length to be taken as a second instruction; the calculating operation instruction which is not based on the long immediate values is compressed to 24-bit length to be taken as a third instruction; according to the instruction coding method and the system thereof, a program control instruction which is based on the long immediate values can also be compressed to the 32-bit length to be taken as the first instruction; the program control instruction which is not based on the long immediate values is compressed to the 16-bit length to be taken as the second instruction. A digital signal processor of the invention comprises the instruction coding system. As three instruction lengths, namely, 16-bit length, 24-bit length and 32-bit length, are adopted to carry out variable-length instruction coding, a quite high code compression ratio is obtained and the length of codes is obviously reduced.

The invention according to one embodiment is a method of distributing information in an RFID tag code that allows a decrease in the tag code length and, at the same time, retains all the information required by longer hierarchical code specifications, such as the ePC code and G-tag code specifications. In another embodiment, the invention is a method of mapping information from a shorter tag code to a longer computer searchable hierarchical code with full data compatibility of the tag code data with the hierarchical code fields. In a further embodiment, the invention is a method of mapping a hierarchical code to a shorter tag code without loss of any information. Blocks in the domain space are sold to encourage judicious use of the space and to avoid wasting the space. Although it is desirable for a manufacturer to purchase domain space blocks that are contiguous in the domain space, the system disclosed is sufficiently flexible to accommodate manufactures of various sizes, as well as manufacturers whose needs change over time.

The invention relates to an intelligent garment GPS data compression method, which comprises the following steps: (1) preprocessing standard GPS data to remove redundant information and reserve data useful for an intelligent garment such as time and longitude and latitude; and (2) performing the shift Hoffman data compression of the GPS data from which redundant information is removed. In the invention, before being compressed, the data is preprocessed to remove the redundant information and only reserve the data useful for the intelligent garment, so the coding length is reduced considerably; a shift Hoffman method is used for compressing the data, so both the compression speed and compression effect are taken into consideration, high performance in compression rate is achieved; and thus, the method has a active and realistic significance for the application of the remote monitoring of the intelligent garment.

The invention discloses a method and a device for transmitting state information, and a device for obtaining state information. The method comprises the following steps: identifying a first state by utilizing S bits; respectively identifying whether each resource block in M resource blocks is in the first state currently by utilizing each bit in M bits; identifying the current state of each resource block not in the first state currently by utilizing T bits respectively; coding S bits, M bits and all (M-N)*T bits which identify the current state of each resource block not in the first state currently to obtain a coding stream used for identifying state information; and transmitting the coding stream, wherein the number of the first state is the most in the current state of M resource blocks. The invention can save resources for transmitting coding streams, and store the corresponding relation of the coding streams and the state information without consuming large numbers of storage resources.

The differential values of adjacent pixels of a group of pixels are calculated and are re-ordered by referring to the magnitude of pixels of a neighboring line. Another time of calculation of differential values of the re-ordered differential values of adjacent pixels is done and the results go through a procedure of a variable length coding. When complex pattern happened, a market code is asserted to break the calculating the differences of adjacent pixels followed by a new raw pixel data as a reference for a new group of pixel. The variable length coding only keeps the “Quotient” and “Remainder” with the “Divider” implicitly done by prediction.

The invention relates to a mobile storage device with an authentication function. The mobile storage device comprises a mobile storage device body and an iris recognizer connected with the mobile storage device body through electrical signals. The iris recognizer comprises a sampling module, a preprocessing module, a characteristic encoding module and a code matching module, wherein the characteristic encoding module is used for extracting and encoding characteristics of an iris image and comprises a first-time LBP operator processing submodule, a second-time LBP operator processing submodule, a third-time LBP operator processing submodule and a fourth-time LBP operator processing submodule. Relevance between the center point and other neighbourhoods around the center point is improved, image texture different in scale and frequency can be met, after multi-time processing of the LBP operator processing submodules, the encoding length is reduced continuously without affecting the relevance between the center point and other neighbourhoods, storage space is saved, the calculation amount is reduced, recognition speed is increased, the recognition accuracy is improved, and robustness is high.

The invention discloses a compressed encoding and decoding method for network flow data and bitmap indexes thereof, which comprises the following steps of: 1, splitting an original stream data sequence according to field attributes, and storing the split original stream data sequence in a column database; 2, partitioning each column of data sequence by taking 4K lines as units to obtain original data blocks; 3, sorting the data in each original data block according to rows to obtain a rearranged data block, and generating a rearranged improved bit chart; 4, constructing an improved bitmap index table for the rearranged data blocks; and 5, respectively performing run coding compression on the rearranged data block, the rearranged improved bitmap and the improved bitmap index table, recording the type and length of 0/1, generating continuous 8-bit or 16-bit words, and forming a compressed data block, a rearranged improved bitmap compression table and an improved bitmap index compressiontable. According to the method, the compression ratio is greatly improved, and the coding length is greatly reduced while the coding complexity is reduced.

The invention discloses a pattern-based time division duplex/time division multiple access channel planning frame coding method, which mainly solves the problem of low coding efficiency of a conventional channel planning frame coding method. The method comprises the following steps of: (1) setting network nodes; (2) dividing a planning cycle; (3) distributing time slots in the planning cycle by a central node to obtain a distribution result of the time slots in the planning cycle; (4) generating uplink and downlink node patterns according to the time slot distribution result; (5) defining P code words according to the purposes of the time slots, and coding the P code words; and (6) generating uplink and downlink time slot mapping patterns according to the time slot distribution result, and combining the uplink and downlink node patterns with the uplink and downlink time slot patterns to complete planning frame coding. The method has the advantages of low planning frame coding length, low overhead of transmission of planning frames in a channel, high utilization rate of the channel and low requirement on equipment, and can be applied to the field of various local area networks and access networks adopting time division duplex/time division multiple access communication.

The invention discloses an ATM (automatic teller machine) input device with identification functions implemented by the aid of irises. The ATM input device comprises an ATM input device body and an iris identifier. The iris identifier is in electric signal connection with the ATM input device body and comprises a sampling module (1), a preprocessing module (2), a feature encoding module (3) and an encoding matching module (4), and the feature encoding module is used for extracting and encoding features of iris images and comprises a first LBP (local binary pattern) operator processing sub-module, a second LBP operator processing sub-module, a third LBP operator processing sub-module and a fourth LBP operator processing sub-module. The ATM input device has the advantages that the relevance of central points and other surrounding neighborhoods can be improved, requirements on image textures with different scales and frequencies can be met, the encoding lengths can be continuously reduced after the iris images are repeatedly processed by the LBP operator processing sub-modules without influence on the relevance of the central points and the surrounding neighborhoods, accordingly, storage spaces can be saved, the computational complexity can be reduced, the identification speeds can be increased, the identification accuracy can be improved, and the ATM input device is high in robustness.

The invention provides an automatic control device based on iris recognition. The automatic control device comprises an automatic control device and an iris recognizer which is in electrical signal connection with the automatic control device. The iris recognizer comprises a sampling module (1), a preprocessing module (2), a feature coding module (3) and a coding matching module (4). The feature coding module (3) is used for extracting and coding features of an iris image, and comprises a first LBP operator processing sub-module, a second LBP operator processing sub-module, a third LBP operator processing sub-module and a fourth LBP operator processing sub-module. According to the invention, the correlation between a center point and other surrounding areas is increased; image texture of different scales and frequencies can be realized; after repeated processing of the LBP operator processing sub-modules, coding length is constantly reduced without affecting the correlation between the center point and the surrounding areas; storage space is saved; calculation amount is reduced; the recognition speed is improved; the recognition accuracy is enhanced; and high robustness is acquired.

The invention relates to an inputting method for encoding and expressing Chinese characters through common language characters and keyboards of the inputting method. Main points of the input method comprise that note and semon units of the common language based on Chinese grammar and mandarin pronunciation are used as fundamental character formation parts, all the character formation parts are distributed on corresponding keys of a general computer keyboard or a cell phone keyboard according to laws, and Chinese characters are encoded through common language characters to be input. Various input keyboards are further designed by combination with basic definitions and setting principles of the common language characters. The keyboards comprise a 26-key keyboard and a 32-key keyboard based on 101- series general computer keyboards, a computer 10-key small numeric keyboard, a general cell phone 8-key keyboard and the like. According to the inputting method, advantages of prior commonly known encoding inputting methods are combined, and defects of the methods are made up, rules are simple and easy to learn and remember, the computer character inputting speed can be improved greatly, and popularization and promotion is facilitated.

The invention provides a superconducting quantum digital-to-analog conversion circuit and a quantum voltage noise source device. A first high-speed pulse signal and a second high-speed pulse signal are transmitted to a tail end along the respective corresponding microwave transmission line structures and are combined when being transmitted to a combining module. The first high-speed pulse signal and the second high-speed pulse signal which are equal in amplitude and opposite in polarity offset each other and then are absorbed by a terminal resistance module, and a common-mode voltage error problem of a traditional superconducting quantum digital-to-analog conversion circuit can be solved. Therefore, the used high-speed digital signal does not need to adopt an encoding mode with lower efficiency in order to avoid a common-mode voltage error problem. Therefore, through the superconducting quantum digital-to-analog conversion circuit, the common-mode voltage problem is solved, an arbitrary waveform synthesis system is simple, and the maximum synthesizable signal amplitude can be maintained.

The present invention relates to one Chinese character inputting method utilizing the ten digital keys. The method includes designating 26 letters to the 10 digital keys according to special rules and 5 kinds of basic strokes, including horizontal, vertical, right slant, left slant and turning, to 5 digital keys in coding all Chinese characters. The said method supports conventional pronunciation input method, conventional stroke order input method and, especially, the mixed pronunciation and stroke order input method. The Chinese characters are prompted in display screen based on their frequency for selection. The said method is easy and high in input speed.

The invention discloses an elevator car identified through iris. The elevator car comprises an elevator car and an iris identifier in electric signal connection with the elevator car; and the iris identifier includes a sampling module (1), a preprocessing module (2), a characteristic encoding module (3) for extracting and encoding characteristics of iris images and including a first LBP operator processing submodule, a second LBP operator processing submodule, a third LBP operator processing submodule and a fourth LBP operator processing submodule, and a code matching module (4). The adopted technical scheme by the elevator car adds relevance between a center point and other surrounding adjacent areas, can satisfy image textures with different sizes and frequencies, continuously reduces the encoding length without influencing relevance between the center point and the surrounding adjacent areas after multiple times of processing by the LBP operator processing submodules, saves the storage space, reduces the calculated amount, accelerates the identifying speed, enhances the identifying accuracy, and is higher in robustness.

The invention relates to the field of article safety protection, in particular to an article safety protection device and system. The article safety protection device comprises a touch system, a control system, an alarm system and a power supply; the touch system comprises a touch combination key, a surface sensing device, a gravity sensor and a horizontal sensor; the control system comprises a control combination key; the alarm system comprises an alarm; the touch combination key, the alarm and the power supply are connected in series to form an upper circuit; the surface sensing device, thegravity sensor and the horizontal sensor are connected in parallel to form a trigger branch circuit, and the trigger branch circuit is sequentially connected with the control combination key, the alarm and the power supply in sequence to form a lower circuit. The device has the functions of preventing theft and losing and preventing the system from being damaged; the problem about article safety protection is solved through simple and convenient operation. The misoperation alarm function can be achieved, electricity is consumed only when the alarm is triggered, no electricity is consumed in the normal state, and environmental protection and energy conservation are achieved.