Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

60results about How to "Avoid coding" patented technology

Method and system for entropy coding for scalable video codec

A method, program product and apparatus for encoding a scalable bit stream from the binarization results of a video sequence by selectively encoding syntax elements and avoiding redundancy in coding. The result is a decrease in the size of the compressed bit stream of an enhancement layer. One method includes determining whether a skipping flag in the base layer macro block of the video data is set, and encoding an enhancement layer macro block of the video data, corresponding to the base layer macro block, with a skipping flag only if the base layer macro block skipping flag is set. Another method includes determining which of a plurality of blocks in a base layer macro block contain zero coefficients, generating a coded block pattern (CBP) of an enhancement layer macro block, where the CBP includes a number of digits equal to the number of blocks in said base layer macro block containing only zero coefficients, and then encoding the CBP of the enhancement layer. Yet another method includes encoding a CBP value of a base layer macro block and differentially encoding a CBP value of an enhancement layer macro block relative to the CBP of the base layer macro block. An additional method includes determining the zero-value coefficients in a block of a base layer, determining whether any of the zero-coefficients become non-zero coefficients in a corresponding block in an enhancement layer, and encoding a coding block flag in an enhancement layer based on that determination.
Owner:NOKIA CORP

Pulse codec method and pulse codec

The embodiment of the invention discloses a pulse coding and decoding method and a pulse codec. In the embodiment of the invention, idle code book spaces can be combined at the time of joint coding under the condition of single track coding so as to become coding bits which can be saved by using joint coding of more than two tracks and pulses required to be coded on the tracks are combined according to positions, the number of positions with pulses, the distribution of the positions with the pulses on the tracks and the pulse number at each position with the pulse are respectively coded, so that respective coding of the plurality of pulses at the same position is avoided, thus more coding bits are saved.
Owner:HUAWEI TECH CO LTD

Video processing method and device, electronic equipment and storage medium

The embodiment of the invention provides a video processing method and device, electronic equipment and a storage medium. The invention discloses a video processing method. The method comprises the following steps: encoding a microphone-connected video stream currently generated by a video playing terminal into an IDR encoded image group; sending to a microphone-connected video playing end; then,according to a coding rule that the IDR frame interval is a plurality of LTR frame intervals; and the currently generated microphone-connected video stream is acquired again, encoded into a pluralityof LTR encoded image groups and sent to the microphone-connected video playing end in sequence, and the first frame of each LTR encoded image group is formed by encoding a preceding IDR frame or a preceding LTR frame. According to the invention, the LTR frame is used for replacing the frame which should be coded into the IDR frame, the original IDR frame interval is expanded, the frequent coding of the IDR frame is avoided, the coding efficiency of the microphone-connected video stream is improved, the quality of the microphone-connected video stream played by the microphone-connected video playing end is further improved, and the experience of the microphone-connected video of a user is effectively improved.
Owner:BEIJING DAJIA INTERNET INFORMATION TECH CO LTD

Video structured processing method and apparatus, and terminal device

The invention is suitable for the technical field of video processing, and provides a video structured processing method and device, terminal equipment and a storage medium, and the method comprises the steps: respectively caching each frame of image in first N frames of images of a video stream to a cache block, and obtaining a cache address of each frame of image in a first cache region; according to the cache address of each frame of image in the first cache region, sequentially reading the images from the first cache region according to a preset frame number sequence, and performing structured processing; respectively detecting whether the image cached in each cache block is invalid or not according to the structured processing progress; when a failed image is detected, clearing the failed image, and caching a frame of new image in the cache block corresponding to the failed image. According to the method, the cache can be released in time when the invalid image is detected, the invalid image is removed, and a frame of new image can be cached after the cache is released, so the use efficiency of the cache is improved, the image is not easy to lose, and the efficiency of video structured analysis processing is improved.
Owner:SHENZHEN INTELLIFUSION TECHNOLOGIES CO LTD

Pattern-based time division duplex/time division multiple access channel planning frame coding method

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.
Owner:BEIJING HANNUO TECH

Coding method and apparatus for using multi-channel audio signals

There is provided a coding method which can effectively prevent a pre-echo and a post-echo from being generated and can perform effective coding to which an psycho-acoustic model is applied. A coding apparatus according to the coding method of the present invention detects the attack and release portions of a waveform signal, and performs gain control to a waveform signal before the attack portion and the waveform signal of the release portion by using a gain control amount adaptively calculated according to the characteristics of the waveform signal. A quantization precision determination circuit determines a quantization precision by using the masking level. An window circuit and a transform circuit transform the waveform signal into a plurality of frequency components. The quantization circuit quantizes the plurality of frequency components by using the quantization precision.
Owner:SONY CORP

Color image encryption method based on new four-dimensional hyperchaos and DNA random coding calculation

PendingCN113077374AGuaranteed PseudorandomnessIncrease scramblingDigital data protectionChaos modelsPlaintextKey space
The invention provides a color image encryption method based on new four-dimensional hyper-chaos and DNA random coding calculation, aiming at the problems that static DNA coding and calculation rules are single, an encryption process is separated from a plaintext, and the encryption process is easily broken by the plaintext. The method comprises the following steps: firstly, designing a new four-dimensional hyper-chaotic system, generating a plurality of pseudo-random sequences by an iteration system, calculating and correcting the pseudo-random sequences to generate a new pseudo-random sequence and a matrix, decomposing a color image into R, G and B channel components, and fusing the R, G and B channel components into a matrix; then carrying out DNA random coding and DNA random calculation on an image and a pseudo-random matrix according to a newly generated pseudo-random sequence, carrying out scrambling and DNA random decoding related to a DNA-level plaintext, then decomposing the matrix into channel components, carrying out fusion to generate a final ciphertext image, wherein an initial value of a chaotic system is obtained by calculating the plaintext through an SHA-512 algorithm. The encryption method provided by the invention is not only large in key space and high in plaintext sensitivity, but also capable of effectively resisting statistical, violent and differential attacks and the like.
Owner:HARBIN INST OF TECH AT WEIHAI

I-shaped inductor automatic code spraying mechanism

The invention discloses an I-shaped inductor automatic code spraying mechanism, which comprises a machine frame, wherein an inductor positioning device, an inductor transfer device and a code spraying device are arranged on the machine frame, the inductor positioning device is used for positioning inductors, the inductor transfer device is used for conveying the inductors after electrical testing and white-point marking operations to the code spraying device for spraying codes, the code spraying device comprises a code spraying machine, a sprayer of the code spraying machine sprays codes to the transferred inductors, the code spraying machine is provided with a control circuit, and the control circuit controls the code spraying machine to operate according to an inductor electrical testing result fed back by an inductor testing device. The I-shaped inductor automatic code spraying mechanism is used for automatically conveying the I-shaped inductors after electrical performance test to a spraying position of the code spraying machine for spraying codes automatically, can carry out code spraying operation according to the electrical performance testing result, can avoid code spraying on inferior products, increases operating efficiency, and can avoid mistakes.
Owner:HAINING LIANFENG DONGJIN ELECTRONICS

Simple, efficient and real-time transgenic product detecting method and application thereof

The invention relates to a simple, efficient and real-time transgenic product detecting method and application thereof. The transgenic product detecting method sequentially comprises the steps that tissue processing is performed, wherein an appropriate number of samples of tissues of agricultural and pastoral plants or animals is taken, ground and homogenized; nucleic acid extraction is performed,wherein a paramagnetic particle method is adopted to perform nucleic acid extraction; targets DNA are captured, denaturating treatment is conducted on extracted nucleic acid, then specificity is utilized to design a transgene capture and extraction chip for a general component for target exogenous genes and / or transgenes generally transformed in the transgene field, and then target genes are captured, extracted and enriched; single molecule sequencing is performed, wherein genetic information of the detected samples is obtained by using a nanopore single molecule sequencing method; result analysis is performed. The simple, efficient and real-time transgenic product detecting method can simply and efficiently achieve detection of transgenic products in real time, the whole process is completed in a full-automatic 'simpleton' way, and accordingly non-professional common practitioners / consumers can also achieve detection of transgenic products.
Owner:栾图

Remote data display method and device, equipment and machine readable storage medium

The invention provides a remote data display method and device, equipment and a machine readable storage medium, and the method comprises the steps: a virtual machine collects desktop data generated in the operation process of the virtual machine, and transmits the desktop data to a processor; the processor receives the desktop data and sends the desktop data to the coding card; the encoding card encodes the received desktop data and sends the encoded desktop data to the processor; and the processor sends the received encoded desktop data to terminal equipment, so that the terminal equipment performs data display on a local desktop according to the encoded desktop data. According to the technical scheme, the image quality of the cloud desktop can be improved, and the calculation amount of the processor is reduced.
Owner:ALIBABA GRP HLDG LTD

Method and system for data transmission in cloud terminal system

The invention provides a method for data transmission in a cloud terminal system. The method comprises the steps that audio and video transmission parameter values of a corresponding cloud terminal virtual desktop are obtained by a local terminal, wherein the audio and video transmission parameter values are used for representing the audio and video transmission capacity; if the audio and video transmission parameter values are compared with audio and video transmission parameter values of the local terminal and the audio and video transmission capacity of the cloud terminal virtual desktop is stronger than that of the local terminal, audio and video data obtained by the local terminal are offered to the cloud terminal virtual desktop, and the audio and video data are transmitted to an opposite terminal communicated with the local terminal after being coded and decoded by the cloud terminal virtual desktop; otherwise, the obtained audio and video data are transmitted to the opposite terminal communicated with the local terminal after being coded and decoded by the local terminal. According to the method for data transmission in the cloud terminal system, the transmission time is shortened and the transmission efficiency is improved.
Owner:BEIJING CHINA POWER INFORMATION TECH +3
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products