292results about How to "Easy to decode" patented technology

A method of optimizing decoding of MPEG4 compliant coded signals is provided, comprising: disabling processing for non-main profile sections; performing reference frame padding; performing adaptive motion compensation. The method of decoding further including performing fast IDCT wherein an IDCT process is performed on profile signals but no IDCT is performed based on whether a 4×4 block may be all zero, or only DC transform coefficient is non-zero, and including CAVLC encoding of residual data. Reference frame padding comprises compensating for motion vectors extending beyond a reference frame by adding to at least the length and width of the reference frame. Adaptive motion compensation includes original block size compensation processing for chroma up to block sizes of 16×16.

Provided are a method and apparatus for decoding a mixed code that is a combination of first and second code images. In the method, a mixed code image is obtained by receiving the original image having the mixed code image and removing noise from the original image. Next, the colors, shades, and brightnesses of pixels of the mixed code image are categorized into groups based on a predetermined threshold, the mixed code image is divided into first and second code images, and first and second information are extracted by decoding the first and second code images, respectively. The first and second code images can be effectively decoded by decoding interpretation information, construction information, error control information, and code direction information stored in the first and / or second code images.

A method is described of streaming HEVC-tiled video data to a client device comprising: providing said client device with a spatial manifest file comprising one or more spatial segments identifiers for locating one or more delivery nodes configured for delivering video data associated with a spatial segment identified by at least one of said one or more spatial segments identifiers, preferably (part of) one or more URLs, to said client device, a spatial segment being associated with HEVC-tiled video data comprising a subset of HEVC tiles of a HEVC-tiled (panorama) video stream; and, selecting a spatial segment identifier in said spatial manifest file for requesting a delivery node to deliver at least part of the video data of a spatial segment as a HEVC-tiled video stream to the client device.

The present invention discloses a method for coding and decoding two-dimensional bar codes. The coding method comprises a data code word generating step, an error-correcting code word generating step, a main code pattern frame generating step and a code pattern image forming step through code word filling. The decoding method is that: a gray scale image of a code pattern is acquired through a digital photography mode; the gray value distribution of different pixels in the gray scale image is counted; a threshold value is determined; the gray scale image is converted into a binary image and an edge image is acquired; the four-corner coordinate of each macro block in the code pattern and the center coordinate of each unit module inside the macro blocks are calculated; the bit value stored by each unit module is determined so as to acquire a data code word matrix corresponding to the decoded code pattern; the data code word is read according to a correct center macro block and the code pattern direction; RS error-correcting algorithm is used to correct the errors in the code word according to a preset error-correcting grade; the data code word is output and recovered as a binary number.

Disclosed is a process of determining, at a point during shipment, whether the solid phase refrigerant in a shipment is sufficient to preserve the shipment cargo, which is blood or other biological products, for the remaining shipment period, by: monitoring the temperatures encountered to said point and estimating the temperatures likely to be encountered during the remaining shipment period; determining the likelihood that the remaining refrigerant can maintain the shipment cargo within a specified temperature range during the remaining shipment period; and if the risk that the remaining refrigerant cannot maintain the shipment cargo within said range during the remaining shipment period is above a cut-off level, then taking action to preserve the value of the cargo.

An embodiment of the invention relates to a method for coding and decoding a video image, coding equipment and decoding equipment. The method comprises steps as follows: determining a motion vector group of a current coding block; determining a prediction value of a first component set of a motion model initial vector of the current coding block according to the motion vector group; determining a to-be-transmitted value of the first component set according to the prediction value of the first component set; coding the to-be-transmitted value of the first component set and sending the coded to-be-transmitted value to a decoding end. According to the method for coding and decoding the video image, the coding equipment and the decoding equipment, the motion model initial vector of the current coding block is determined according to the motion vector group, the to-be-transmitted value of a motion model is determined according to the motion model initial vector and is coded and transmitted, so that the decoding end can decode according to the to-be-transmitted value of the motion model, and the volume of data transmitted during coding and decoding and occupied bit number can be reduced.

A communication system, network interface and communication port is provided that includes a media local bus. The local bus is connected between a controller and one or more multimedia devices located within a node of the communication system. The controller periodically broadcasts sync signals to the source device, or devices, to synchronize data transmission partitioned into time slots. Each time slot represents is dedicated to a particular data type. Thus, time slot 1 can accommodate packetized data, time slot 2 can accommodate synchronous data, time slot 3 can accommodate control data, and time slot 4 can accommodate isochronous data. Various combinations and variations of those time slots can occur where fewer than four data types can be present within a frame or all four data types can be present. The local bus includes a signal line and one or more data lines.

Provided are a method and apparatus for decoding a mixed code that is a combination of first and second code images. In the method, a mixed code image is obtained by receiving the original image having the mixed code image and removing noise from the original image. Next, the colors, shades, and brightnesses of pixels of the mixed code image are categorized into groups based on a predetermined threshold, the mixed code image is divided into first and second code images, and first and second information are extracted by decoding the first and second code images, respectively. The first and second code images can be effectively decoded by decoding interpretation information, construction information, error control information, and code direction information stored in the first and / or second code images.

An approach for reliably communicating over a satellite in support of a communication service including, for example, as direct broadcast satellite and data service, is disclosed. An input message is encoded, yielding a structured Low Density Parity Check (LDPC) coded message. The coded message is modulated according to a high order modulation scheme that has a signal constellation representing more than two symbols per signaling point—e.g., 8-PSK (Phase Shift Keying) and 16-QAM (Quadrature Amplitude Modulation). The system includes a transmitter configured to propagate the modulated signal over the satellite. The above approach is particularly applicable to bandwidth constrained communication systems requiring high data rates.

The invention discloses a transmission diversity method based on space-frequency coding, which is applicable to an MIMO-OPDM system with a sending antenna which is more than 2. The method takes a combination of the SFBC and pre-coding weighing switching as a diversity mode of SFBC+PVS, taking the objective factor into the account that the stronger the channel correlation is, the weaker the diversity effect is, and uses a weighted vector to remove the effect resulted by the inclination angle between antennae and the channel correlation between different antennae. The method comprises the following steps: step one, two paths of data streams are obtained by carrying out SFBC coding to an input bit stream; step two, two groups of pre-coding weighing vectors are selected; and step three, a coding matrix after pre-coding weighing switching is obtained after the pre-coding weighing vector is adopted to carry out weighing to an SFBC coding data block, and finally an in-time signal obtained by inverse fast Fourier transform is transmitted. By adopting the diversity method, the space diversity effect can be utilized better and the effect on coding gains can be reduced.

Provided are a method and apparatus for decoding a mixed code that is a combination of first and second code images. In the method, a mixed code image is obtained by receiving the original image having the mixed code image and removing noise from the original image. Next, the colors, shades, and brightnesses of pixels of the mixed code image are categorized into groups based on a predetermined threshold, the mixed code image is divided into first and second code images, and first and second information are extracted by decoding the first and second code images, respectively. The first and second code images can be effectively decoded by decoding interpretation information, construction information, error control information, and code direction information stored in the first and / or second code images.

The invention discloses a decoding and sequencing method by real-time synthesis of two nucleotides into deoxyribonucleic acid (DNA). Single-sequencing reactions are performed on two different nucleotides of X and Y simultaneously and a base sequence fragment code of XYn is obtained according to the quantitative relation between the number of synthesizing nucleotides and the number of the detected molecules which are generated in real time. The sequencing comprises two sets of sequencing reactions on the same template; and in either set of sequencing, a cycle that two different nucleotides synthesize the sequencing reaction simultaneously is performed on deoxyadenosine triphosphate (dATP), deoxycytidine triphosphate (dCTP), deoxyguanosine triphosphate (dGTP) and deoxy-thymidine triphosphate (dTTP) containing four nucleotides in the mode that each nucleotide is used once in a cycle. After a plurality of sequencing reactions, information of a plurality of XYn ranked according to a sequencing order by the first set is obtained. When the set of sequencing reactions is completed, denaturation is performed to eliminate the extended strand of a sequencing primer and the sequencing primer is re-crossed to perform the second set of sequencing reactions; information of a plurality of XYn ranked by the second sequencing reaction is obtained; the specific base sequence of nucleic acid fragment to be detected is assembled by decoding the information of a plurality of XYn ranked according to a sequence order by the two sets.

The invention discloses a method, a device and a system for random linear network encoding, which relate to network encoding and aim to solve the problems of troubled process and long time consumption of the prior network encoding technology. The method for the random linear network encoding provided by the embodiment of the invention comprises the following steps: dividing original data into at least two data blocks sequentially; determining at least two coefficient units, wherein the length of the coefficient units is the same as the number of the data blocks, and the coefficient units comprise two elements; performing bitwise AND operation on the data blocks and the corresponding coefficients to acquire encoding data blocks; and performing bitwise OR operation between the encoding datablocks to acquire encoding packs. A method for decoding the random linear network encoding comprises the following steps: simplifying the coefficient units in the encoding packs through the inverse operation of bitwise OR operation, and acquiring the original data. The method, the device and the system for the random linear network encoding are suitable for the network encoding with high encodingefficiency requirement.

In a signal and power transmission system, a primary coil and a secondary coil magnetically coupled to the primary coil and connected to an electrical path are provided. An encoder encodes a target signal to be transmitted to produce a pulse code signal, and a voltage applying unit applies a voltage signal based on the pulse code signal to the primary coil as an input voltage signal. A decoder decodes an output voltage signal induced in the secondary coil using a variation in the output voltage signal into a decoded signal corresponding to the target signal. The output voltage signal is induced in the secondary coil based on the input voltage signal. A rectifier rectifies a current flowing through the electrical path connected to the secondary coil according to the output voltage signal induced in the secondary coil, thus outputting a rectified current as power.

The invention is an elastic cover for tactile sensors, said cover comprising an inner surface (11) suitable for being fixed to a surface defined by the tactile sensors, and an outer surface comprising a bump (13). The cover comprises a base layer (10), one surface of which is the inner surface (11), and on its outer surface (12) bumps (13) integral with the base layer (10) are formed. Further, the invention is a tactile sensor array with the elastic cover.

The present invention discloses a disturbance-based cyclic redundancy check (CRC)-auxiliary medium-short code length Polar code effective-decoding method, falling within the technical field of error correction coding. The method of the present invention comprises: firstly, performing CRC coding on an information bit to be transmitted, and then coding a Polar code after the CRC coding. At a receiving end, if code words of an SC decoder cannot pass CRC, a disturbance operation is activated to make the SC decoder generate better code words. The disturbance operation refers to: adding a tiny independent noise to a channel output sequence for disturbance, and then performing decoding again by using the disturbed sequence. When the decoder generates code words capable of passing CRC or reaches a re-decoding count threshold, the method announces completion of decoding. A numerical simulation experiment shows that under the conditions of the same bit error rate and code error rate, compared with an SC decoding method, the decoding method provided in the present invention can obviously improve a bit signal to noise ratio. Moreover, along with the improvement of a channel environment, the decoding complexity of the method of the present invention is approximate to the complexity O (NlogN) of SC decoding.

The invention relates to a communication method for solving problems due to a hidden terminal in a wireless network based on a wireless interference cancellation technique and a node full-duplex mode. Under a wireless local area network physical layer, wireless network nodes are coded into special interference signals by an OFDM (Orthogonal Frequency Division Multiplexing) technology, and overlapped into data signals in the air by means of ''attachment''. The control information and the data information can be transmitted in parallel, thus, the resource consumption on control information can be saved. The nodes for receiving the data information can remove the interference signals by an interference canceling technology in order to obtain the original data. The node for receiving the control information can demodulate the control signal from the mixed signal by an energy detecting technology, so as to obtain the physical address of the node which is transmitting in a collision domain, as well as establishing a relative node list. By inquiring the transmitting state and the receiving state of adjacent nodes, the node can determine whether it is the hidden terminal, so as to avoid transmission of conflict data and increase channel utilization rate.

The invention relates to a method for single-mute absolute encoding, which comprises that: black strips and white strips are etched on a grating in an alternating way; a black strip and a white strip which are adjacent form a code bit; at least one code bit forms an identification code, at least one code bit forms a positional code, and all positional codes contain the same number of code bits; the number of the identification codes is the same as that of the positional codes and the identification codes and the positional codes are arranged in an alternating way; at least one code bit in each identification code is different of all code bits in each positional code; a code bit in each positional code forms a binary bit and is defined as 0 or 1 according to the width of the black strip of the code bit; the whole grating contains (m+p)*2 code bits at most, wherein m represents the number of the binary bits constituted the m bits of the positional codes and p represents the number of the code bits of the identification codes; an identification code and a positional code which are adjacent form a first code area; two adjacent first code areas form a secondary code area; and a bit sequence of a second positional code of each second code is the bit sequence after bitwise Not of a first positional code.

The invention belongs to the technical field of laser information, and discloses a time control pulse interval laser encoding and decoding method. An encoding end is timed by a Beidou timing module; absolute precise time is obtained; absolute precise integral second moments are taken as references, a demanded quantity of pulse time intervals at a current moment are generated once according to an encoding function; encoding pulse signals are generated at pre-generated time intervals by a timer; a pulse width is controlled; a decoding end obtains the absolute precise moment through the Beidou timing module; the absolute precise moment is synchronous with that of the encoding end; pulse receiving moments are generated according to an encoding function the same to the encoding function of the encoding end; and pulse matriculate wave gates are precisely controlled at the pulse receiving moments by the timer; therefore, the decoding is realized. The method provided by the invention is mainly featured by that the encoding pulse time intervals are different from one another and have no any rule and cycle; the quasi-random distribution encoding has relatively strong anti-decoding capability; the design is simple and is easy to realize; and the method is applicable to fields such as laser semi-active guidance, laser communication and laser radars.

In the context of packet-oriented data transmission via a network, an apparatus for transmitting a sequence of data packets checks whether a packet is missing or faulty. In this case, a replacement packet is provided which is a valid packet with regard to a packet syntax which, however, has a predetermined contents characteristic. On the decoder side, a basic decoder recognizes the packet as a valid packet and decodes same, whereas an extension decoder can enable an error concealing measure on the basis of an indication in the replacement packet to the fact that this is a replacement packet, in order to provide a higher-quality audio reproduction.

The invention discloses a cooperative diversity scheme for wireless sensor networks based on the decoding and forwarding of distributed space-time codes, which comprises cluster head determination, cooperative establishment, time-slot planning and data transmission. The cooperative diversity scheme effectively solves the problems that a plurality of prior cooperative schemes such as amplify-and-forward, decode-and-forward, coded cooperation and so on have complicated design, difficult realization, low diversity efficiency, difficult cooperative synchronization and so on, effectively improves the frequency spectrum efficiency and the energy efficiency of the system, and greatly decreases the system energy consumption of the wireless sensor networks.

The invention discloses a relay-assisted environmental backscatter communication method. A relay assists a radio frequency transmitter and a backscatter communication device to communicate with respective target receivers at the same time. The backscatter communication device modulates the own information to the signal of the radio frequency transmitter, the relay decodes the information by adopting a serial interference elimination mode, forwards decoded information to respective information receivers in a non-orthogonal multiple access manner, and optimizes the performance of environment backscatter communication by optimizing the reflection coefficient of the environment backscatter communication device and a power distribution factor of the relay on the premise of ensuring the communication quality of the radio frequency communication link. Compared with a traditional decoding forwarding relay communication system, the relay-assisted environment backscatter communication method provided by the invention can obviously improve the communication performance of the system.

The invention discloses a decoding method, a decoding module, a signal processing method and a signal processing device, wherein the decoding method, the decoding module, the signal processing method and the signal processing device are based on difference Manchester encoding. In the decoding process of the decoding method, signals based on the difference Manchester encoding are sampled according to a preset sampling interval, a series of sampling sites are obtained, then the amplitude-time characteristic of the obtained sampling sites is converted into the time characteristic, and thus time stream data corresponding to the series of sampling sites are obtained; then, according to the time difference relation between the intersection point of the waveform phase overturning point corresponding to a code element 0 and a code element 1 in the difference Manchester encoding and the X axis and the last intersection point of the waveform corresponding to a previous code element and the X axis, a code element value is analyzed from the time stream data, the obtained code element value is converted, and then original data sent by a sender can be obtained. The decoding process is simple, decoding efficiency and decoding accuracy are high, and particularly the secret key communication real-time performance and precision requirements can be well met.

An imaging unit programmed to reduce specular reflection in a captured image and improve the interpretation of decodable information within the image. The imaging unit is programmed to scan a predetermined region within the image that is susceptible to specular reflection, evaluate the pixel values within the region against a threshold value that is representative of specular reflection, and then replace the pixel value found to represent specular reflection with replacement pixel values that do not corrupt interpretation of the decodable information in the predetermined region. The threshold value and replacement values may be determined on an ad hoc basis and stored in local memory, or calculated for each captured image.

Disclosed is a process of determining, at a point during shipment, whether the solid phase refrigerant in a shipment is sufficient to preserve the shipment cargo, which is blood or other biological products, for the remaining shipment period, by: monitoring the temperatures encountered to said point and estimating the temperatures likely to be encountered during the remaining shipment period; determining the likelihood that the remaining refrigerant can maintain the shipment cargo within a specified temperature range during the remaining shipment period; and if the risk that the remaining refrigerant cannot maintain the shipment cargo within said range during the remaining shipment period is above a cut-off level, then taking action to preserve the value of the cargo.

The invention relates to a method for optimizing multi-channel distribution in a distributed wireless local area network based on a self-adaptive learning model. In the invention, channel distribution information is provided for a medium access control sub-layer by using an interference adding module and an interference detection module of a physical layer based on an orthogonal frequency division multiplexing technology, so that a distributed node is helped to adaptively select a non-conflict channel under the non-synergistic condition for transmitting. The interference adding module is used for coding channel distribution information into an interference signal by using a communication interference technology for transmitting together with data information. An original data receiving node is used for eliminating the interference signal through an interference counteracting module to obtain original data. A channel access strategy for marking a control signal and a corresponding access channel is stored in each node. The node is used for adjusting and learning the channel access strategy by using a channel distribution module according to the detected control signal, so that a multi-channel time division multiplexing effect is achieved finally, and the consumption of network resources by the transmission of synergic information is avoided.

Methods and apparatus are provided for reading and writing data in q-level cells of solid-state memory, where q>2. Input data is encoded into codewords having N qary symbols, wherein the symbols of each codeword satisfy a single-parity-check condition. Each symbol is written in a respective cell of the solid state memory by setting the cell to a level dependent on the qary value of the symbol. Memory cells are read to obtain read signals corresponding to respective codewords. The codewords corresponding to respective read signals are detected by relating the read signals to a predetermined set of N-symbol vectors of one of which each possible codeword is a permutation.