75results about How to "Improve decoding rate" patented technology

A quality of service profile for a mobile communication subscriber unit is determined and includes one or more mobile-specific desired quality of service parameters. Actual values for the service parameter(s) is(are) determined and fed back to a link quality controller to determine whether they are in an acceptable range or relationship with corresponding actual quality of service parameter values. A modulation and/or coding scheme for transmitting the information over the radio link is selected or adjusted based on whether the desired and actual quality of service parameters are in an acceptable range or acceptable relationship. A combined “desired” quality of service parameter using the first and second quality of service parameters (or more if desired) may be determined. A combined “actual” quality of service parameter using first and second actual quality service parameter values is determined. Those combined desired and actual quality of service parameters are compared to determine whether they are in an acceptable range or relationship. The modulation or coding scheme (or both) is (are) selected or adjusted based thereon.

A method of transmitting control information in a carrier aggregation system is provided. The method includes: transmitting bandwidth information of a component carrier; configuring downlink control information including an additional indication field and an information field; mapping the downlink control information in any one of containing units having a plurality of predetermined different bit sizes in accordance with the bandwidth information; and transmitting the downlink control information mapped to any one of the containing units, wherein the information field is any one of a plurality of control information formats applicable to the component carrier, and the additional indication field includes information indicating a specific control information format to which the information field corresponds among the plurality of control information formats. Accordingly, the number of blind decoding attempts of a user equipment can decrease in a carrier aggregation system. Therefore, power consumption of the user equipment can decrease, and a decoding rate can increase.

Provided are a method and an apparatus for parallel Turbo decoding in LTE, comprising: storing input check soft bits and a frame to be decoded, when storing said frame, dividing the frame into blocks, storing each block respectively as system soft bits; simultaneously performing component decoding once for several blocks of one said frame, and in the process of component decoding, dividing each block into several sliding windows according to a sliding window algorithm, calculating the following parameters according to system soft bits, check soft bits and priori information: branch metric value γ, forward state vector α, backward state vector β, LLR, and priori information, storing the priori information for use in a next component decoding; completing a decoding process after several component decoding; performing a hard decision on LLR, and if judged that a result of the hard decision meets an iteration ending condition, outputting a decoding result, otherwise, performing next iteration decoding.

The invention improves the refresh rate and minimizes the memory for display when reproducing a color image. A color image encoding device has a creation device which counts the number of colors used in color image data and creates a global palette which lists corresponding indexes when the number of colors is a specified value or less, a block division device which divides the color image data into a plurality of blocks, a local palette creation device which creates a local palette which lists indexes in the global palette when the number of colors in a block is less than the number of colors in the global palette, and a color index assigning device which assigns the indexes in the global palette to the input pixels when the number of colors is the same as the number of colors in the global palette, and assigns the indexes in the local palette to the input pixels when the numbers of colors is different from the number of colors in the global palette.

The invention discloses a nonvolatile storage chip sin burning method and system and belongs to the field of chip technology. The burning method comprises the following steps: collecting a bar code/two-dimension code and analyzing the information loaded by the bar code/two-dimension code; calling a storage chip read-write dynamic link library to burn the information to a storage chip through the storage chip hardware interface of equipment. With adoption of the embodiment of the invention, burnt information is loaded by fully utilizing the advantages of high density, large coding range, high fault tolerance and high decoding rate of the code/two-dimension code; in addition, the information is burnt to the storage chip through the hardware interface of the storage chip on software control equipment, so that the difference between storage chips and the difference of the hardware interface are shielded, a unified burning interface is provided for an application layer so as to complete burning of different chips, the burning procedure is simplified, and the cost is saved.

The invention relates to a high-performance barcode decoding method. The method comprises the steps that the barcode type is judged firstly, scanning and decoding parameters are determined according to the barcode type, and scanning, identification and combination are performed simultaneously and then scanning is completed so that decoding is completed. Compared with the methods in the prior art, the problems in the actual situation that any one scanning line cannot completely scan all the empty image of a barcode image and cannot successfully decode can be effectively handled by the method so that the decoding rate can be enhanced. Meanwhile, the high-performance barcode decoding method also has high performance and has high decoding capacity for the image having interference.

A method for packet retransmission employing feedback information is disclosed. The method for packet retransmission employing feedback information comprises receiving reception acknowledgement information from a receiver after a transmitter transmits packets, the reception acknowledgement information representing channel status information and decoding success/failure of the packets; and changing a retransmission mode in accordance with the channel status information if the reception acknowledgement information represents decoding failure, and transmitting retransmission packets of the packets in accordance with the changed retransmission mode. Thus, it is possible to improve decoding probability of the receiver and increase efficiency of retransmission.

The invention provides a segmented decoding method for scrambled network video streams and relates to the technical field of processing of the video streams. The method includes: capturing video data packets transmitted from a network, setting a cache for each video stream, sequentially storing the data packets at corresponding positions, and starting video decoding when consecutive data packets reach an appointed size; adopting an FFmpeg technique for decoding of data blocks, modifying corresponding contexts during decoding, and enabling FFmpeg to continue decoding by means of disguising. An independent printed circuit board with a plurality of acceleration units is adopted for decoding, the acceleration units are implemented by means of the FFmpeg technique, and accordingly parallel decoding can be realized; no matter in which sequence the network video streams are received, the video streams can be spliced and decoded to the maximum extend by taking the data blocks as units according to the segmented decoding method which is supportive to parallel decoding of various data streams; by adoption of the segmented decoding method, available frame count receiving rate and decoding rate of the video streams are increased.

The embodiment of the invention provides a data transmission method, network equipment, communication equipment and a storage medium. The data transmission method comprises the steps that network equipment determines a time window of a target communication equipment group, wherein the distance between two communication devices in the target communication device group is smaller than or equal to athreshold value; wherein the time window is used for enabling at least two communication devices of the target communication device group to send and receive data in the time window through a sidelink, and the network device sends first indication information indicating the time window to the at least two communication devices of the target communication device group. The distance between the twocommunication devices in the target communication device group is smaller than or equal to the distance threshold. For a communication device as a receiving end, the distances between at least two communication devices in the target communication device group and the receiving end are relatively close, so that mutual interference between data sent by the communication devices due to relatively large distance difference between the communication devices sending data in the same time window and the receiving end can be avoided, and the decoding rate of the communication devices at the receivingend can be improved.

The invention provides a segmented decoding method for scrambled network audio MP3 (moving picture experts group audio layer 3) streams and relates to the technical field of processing of audio streams. The method includes: capturing audio MP3 data packets transmitted from a network, acquiring MP3 data frames, storing in caches according to position information, setting a cache for each session, and starting audio decoding when consecutive data packets reach an appointed size; adopting an FFmpeg technique for decoding of data blocks, modifying corresponding contexts during decoding, and enabling FFmpeg to continue decoding by means of disguising. An independent printed circuit board with a plurality of acceleration units is adopted for decoding, the acceleration units are implemented by means of the FFmpeg technique, and accordingly parallel decoding can be realized; no matter in which sequence the network audio MP3 streams are received, the audio streams can be spliced and decoded to the maximum extend by taking the audio frames of a fixed quantity as a unit according to the segmented decoding method which is supportive to parallel decoding of various data streams; by adoption of the segmented decoding method, available frame count receiving rate and decoding rate of the audio streams are increased.

The invention discloses an MAC (multiple access control) protocol communication method for an underwater sensor network with an asynchronous duty ratio and network coding. The method comprises the following steps: initializing an MAC protocol, and determining the data exchange time of each pair of transmitting nodes and receiving nodes; determining a coding node in a network coding layer by using a coding node selection algorithm; after the node in the network coding layer is awoken, if the node is a common node, directly transmitting out a received data pack; and if the node is a coding node, transmitting out after coding. The method disclosed by the invention has the advantage of improving the network throughput and the data transmission rate.

The invention provides a bidirectional cooperative access method based on adaptive multiple decoding, and comprises two parts including "network coding cooperative transmission and processing" and "network coding and decoding mode" during operation. Three new mechanisms including "coding compensation", "cooperative node selection for sending busy tone based on the number of packets" and "adaptivemultiple decoding" are adopted. The first and second new mechanisms work in the "network coding cooperative transmission and processing" part, and the third new mechanism works in the "network codingand decoding mode" part. The three new mechanisms are used, the new access method provided by the invention can enable a selected cooperative node to carry out coding operation on the own data and thereceived data, so that the coding opportunity is improved, a problem of collision caused by the hidden terminal of a candidate cooperative node is avoided, and the decoding success rate of a destination node can be improved. Therefore, the network coding technology is fully used on the whole, so that the end-to-end average time delay of a data frame is reduced, and a purpose of increasing the network throughput is achieved.

The invention relates to a method for improving the decoding rate of a QR code, and the method comprises the following steps: obtaining an image of a frame of QR code, carrying out the searching of aposition detection graph on the image, and recording the number of the position detection graphs and key graph information; if the number of the position detection graphs is greater than or equal to aset value, decoding; the number of the position detection graphs is smaller than a set value, conducting smoothing processing on the image, and conducting position detection graph searching processing on the smoothed image, whether the number of the position detection graphs searched after smoothing processing is larger than or equal to the set value or not is judged, conducting decoding processing if the number of the position detection graphs searched after smoothing processing is larger than or equal to the set value, and otherwise the decoding process is ended; and decoding the QR code according to the found position detection graph and the key graph information, outputting a result if the decoding is successful, judging whether the image is subjected to smoothing processing or not ifthe decoding is failed, if the image is subjected to smoothing processing, ending the decoding process, and if the image is not subjected to smoothing processing, returning to the smoothing processing step.