46 results about "Pulse-code modulation" patented technology

A method of video encoding includes performing context modeling to determine a context model for each of a number of bins of syntax elements corresponding to residues of a region of a transform skipped block in a current picture. The number of the bins of syntax elements being context coded does not exceed a maximum number of context coded bins set for the region. The method further includes encoding, according to Block Differential Pulse Code Modulation (BDPCM), the syntax elements based on the determined context models. When the maximum number of context coded bins is reached, remaining bins of syntax elements are encoded based on a bypass model.

The present invention provides a BDPCM-based image decoding method and an apparatus therefor. According to the present invention, an image decoding method performed by a decoding device is characterized by comprising: a step for determining whether the width and height of a current block are less than or equal to a maximum transform block size; a step for acquiring a BDPCM flag indicating whether block-based incremental pulse code modulation (BDPCM) is applied to the current block when the width and height are less than or equal to the maximum transform block size; a step for acquiring, on the basis of the BDPCM flag, a BDPCM direction flag indicating a prediction direction for the current block; a step for deriving a prediction sample of the current block on the basis of an intra prediction mode derived on the basis of a BDPCM direction flag; and a step for deriving a recovery sample of the current block on the basis of the prediction sample.

The invention discloses a PCM (Pulse Code Modulation) collector dynamic framing IP core and method based on an FPGA (Field Programmable Gate Array). The IP core comprises a register access module, a DNA authorization module, an acquisition frame processing module, a framing control module and a PCM coding module. Comprising the following steps: performing parameter configuration on an IP core register; the DNA authorization module verifies the authorization key; the acquisition frame processing module receives and caches the acquisition frames in parallel and assembles PCM frame data; and performing PCM coding according to the code pattern configured by the register. The method has the beneficial effects that the frame format is high in universality, high in flexibility and high in deployment efficiency; predefinition and rapid dynamic switching of three frame formats are supported; parallel framing of 32 paths of acquisition frames is supported; common PCM code pattern output is supported; all functions can be accessed through a register, and extra logic is not needed; the register interface adopts a standard AXI-Lite interface; and a DNA authorization function is integrated.

The utility model provides a battery which comprises a battery cell structure and a connecting structure arranged at one end of the battery cell structure, the connecting structure comprises a PCM (Pulse Code Modulation), a hot melt adhesive and a rubber shell, and the PCM is fixedly connected with the rubber shell in a hot melt adhesive low-pressure injection molding packaging mode. According to the battery disclosed by the utility model, the battery protection module mounted at the head of the battery cell structure and the rubber shell are subjected to low-pressure injection molding packaging by using the hot melt adhesive, so that excellent bonding strength and sealing performance between the battery protection plate and the battery shell are realized, the structural stability of battery assembly can be improved, and the appearance quality of the battery is optimized; and meanwhile, the production efficiency and the environmental protection performance of the product are improved.

Systems, methods, and instrumentalities are disclosed for video coding. Video coding may be or may include video encoding and / or video decoding. In examples, a coding device, such as an encoder and / or a decoder, may obtain a coding block associated with a video content. The coding device may determine whether transform skip and / or block differential pulse coded modulation (BDPCM) associated with the coding block has been enabled. Based on a determination that the transform skip and / or BDPCM has been enabled, the coding device may obtain a coefficient associated with the coding block. The coding device may obtain a plurality of predicted signs, e.g., based on the obtained coefficient. In examples, the coding device may predict BDPCM direction.

An image encoding / decoding method and apparatus are provided. An image decoding method according to the present disclosure may include parsing, from a bitstream, first information specifying whether block difference pulse code modulation (BDPCM) applies to an intra-predicted current block, determining a prediction direction of BDPCM for the current block and generating a residual block of the current block based on the determined prediction direction of BDPCM, based on the first information specifying that BDPCM applies to the current block, generating a prediction block of the current block, by performing intra prediction based on an intra prediction mode of the current block, and reconstructing the current block based on the residual block and the prediction block.

An image encoding / decoding method and apparatus are provided. An image decoding method according to the present disclosure may include parsing, from a bitstream, first information specifying whether block difference pulse code modulation (BDPCM) applies to an intra-predicted current block, determining a prediction direction of BDPCM for the current block and generating a residual block of the current block based on the determined prediction direction of BDPCM, based on the first information specifying that BDPCM applies to the current block, generating a prediction block of the current block, by performing intra prediction based on an intra prediction mode of the current block, and reconstructing the current block based on the residual block and the prediction block.

The application provides a video image fast clipping and dimension reduction method and system based on a hierarchical bounding box, applied to the technical field of image processing, wherein the method collects multi-view dynamic scene point cloud data, and then divides the space by using a hierarchical bounding box to establish a bounding box structure with density characteristics; subsequently, optical diffraction array pre-filtering is used, and point clouds are separated based on wavelength selectivity and density distribution to generate a first subset and a background subset; then, adaptive pulse code modulation is used on nodes in the first subset to obtain high-precision data, and nodes in the second subset are compressed into low-code-rate data by using run-length encoding; subsequently, the two types of data are input into an improved k-d tree based on the spatial relationship of the bounding box to generate a two-dimensional point set representing key features, and a spatial index is constructed to realize real-time scene retrieval. The application can realize image dimension reduction while retaining key geometric features of the image, thereby improving efficient real-time spatial retrieval in a dynamic scene.

The present invention relates to a video signal processing method and apparatus using a block DPCM prediction method. The present disclosure relates to a method and apparatus for processing a video signal, and more specifically, comprises the steps of: parsing block-based incremental pulse code modulation (BDPCM) enabling information indicating whether BDPCM has been enabled from a bitstream; when the BDPCM enabling information indicates that the BDPCM has been enabled, the width of the current block is less than or equal to a first value, and the height of the current block is less than or equal to a second value, parsing intra-frame BDPCM information indicating whether to apply the BDPCM to the current block from the bitstream; when the intra-frame BDPCM information indicates that BDPCM is applied to the current block, parsing intra-frame BDPCM direction information on the current block from the bitstream; and reconstructing the current block based on the intra BDPCM direction information.

According to the present disclosure, a method of image decoding performed by a decoding device includes determining whether a width and a height of a current block are less than or equal to a maximum transform block size, obtaining a block-based delta pulse code modulation (BDPCM) flag indicating whether BDPCM is applied to the current block when the width and the height are less than or equal to the maximum transform block size, obtaining a BDPCM direction flag indicating a prediction direction for the current block based on the BDPCM flag, deriving prediction samples of the current block based on an intra prediction mode derived based on the BDPCM direction flag, and deriving reconstructed samples of the current block based on the prediction samples.

In some aspects, an electronic device may receive a plurality of haptic signals associated with a plurality of haptic events, wherein the plurality of haptic events overlap in a time domain. The electronic device may generate a mixed haptics signal that combines the plurality of haptic signals in a mechanical acceleration domain, wherein the mixed haptics signal preserves timing or synchronization information associated with the plurality of haptic signals. The electronic device may generate an output stream to be provided to a haptic actuator, wherein the output stream includes a pulse code modulation (PCM) voltage signal based on the mixed haptics signal that combines the plurality of haptic signals. Numerous other aspects are described.

In some aspects, an electronic device can receive multiple tactile signals associated with multiple tactile events, wherein the multiple tactile events overlap in the time domain. The electronic device can generate a hybrid tactile signal that combines the multiple tactile signals in the mechanical acceleration domain, wherein the hybrid tactile signal stores timing or synchronization information associated with the multiple tactile signals. The electronic device can generate an output stream to be provided to a tactile actuator, wherein the output stream includes a pulse code modulation (PCM) voltage signal based on the hybrid tactile signal combining the multiple tactile signals. Numerous other aspects are described.

Provided is a semiconductor device including: a pulse-width modulation circuit configured to pulse-width modulate a signal based on a first pulse-code modulated signal that is a sound source signal, and output a first pulse-width modulated signal; a first conversion circuit configured to convert a second pulse-width modulated signal based on the first pulse-width modulated signal into a second pulse-code modulated signal; and a comparison circuit configured to convert the first pulse-code modulated signal into a first comparison target signal by an inversely convertible conversion method, convert the second pulse-code modulated signal into a second comparison target signal by the conversion method, and compare the first comparison target signal with the second comparison target signal.

An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of: acquiring image information including a Block-based Delta Pulse Code Modulation (BDPCM) available flag; and generating a reconstructed picture on the basis of the image information, wherein the BDPCM available flag relates to whether BDPCM is available for chroma and luma blocks.

The invention discloses a federated learning cold start method and system based on an FPGA dynamic watermark, and the method comprises the following steps: 1, obtaining a preset watermark bit stream at an edge node of a client, and relates to the technical field of federated learning and privacy calculation crossing. According to the method, the watermark bit stream is embedded into the low level of the shadow vector through the FPGA watermark embedding device by adopting the differential pulse code modulation, so that the watermark information carried by the embedded watermark bit stream has the anti-noise capability, the watermark embedding strength lambda is dynamically adjustable, the dynamic self-adaptive adjustment of the watermark strength is realized, and the watermark embedding efficiency is improved. Therefore, the anti-stripping capability of the watermark is enhanced, and model pruning, fine tuning and DLG reverse attack can be effectively resisted.

The invention provides a PCM-based mapping table hierarchical storage and dynamic updating method and system, and the method comprises the steps: dividing a mapping table according to a logic address space when an SSD controller initializes a system, and building a DDR cache region and a PCM intermediate layer; the SSD controller establishes a popularity statistical table; entries of a high-frequency or key starting area are loaded into a DDR cache region, and full entries are stored into a PCM intermediate layer; when the host sends a read-write request to the SSD controller, the SSD controller preferentially searches the corresponding mapping entry from the DDR cache region; if the corresponding mapping entry is not found, searching the corresponding mapping entry from the PCM intermediate layer; if the mapping entry is found, loading the accessed mapping entry into a DDR cache region from a PCM intermediate layer, and updating the heat; and realizing adaptive migration between the DDR and the PCM based on the access heat item.

Methods, systems, and devices are described for implementing adaptive color transform (ACT) and block-based delta pulse code modulation (BDPCM) during image / video encoding or decoding. An example method of video processing includes, for a conversion between a current video unit of a video that is a chroma video unit and a bitstream representation of the video, determining, based on a rule, whether a block-based delta pulse code modulation (BDPCM) mode is available, and performing the conversion based on the determination, where the rule is based on whether an adaptive color transform (ACT) mode is used to code the current video unit and / or whether the BDPCM mode is used to code a luma video unit corresponding to the current video unit.

An image decoding method performed by a decoding device according to the present document comprises the steps of: acquiring a block-based delta pulse code modulation (BDPCM) flag for a current block; on the basis of the BDPCM flag indicating that BDPCM is applied to the current block, acquiring a BDPCM direction flag for the current block; and storing, as an intra-prediction mode of the current block, an intra-prediction mode of a prediction direction derived on the basis of the BDPCM direction flag.

The present invention relates to a video signal processing method and apparatus using a block DPCM prediction method. The present disclosure relates to a method and apparatus for processing a video signal, and more specifically, comprises the steps of: parsing block-based incremental pulse code modulation (BDPCM) enabling information indicating whether BDPCM has been enabled from a bitstream; when the BDPCM enabling information indicates that the BDPCM has been enabled, the width of the current block is less than or equal to a first value, and the height of the current block is less than or equal to a second value, parsing intra-frame BDPCM information indicating whether to apply the BDPCM to the current block from the bitstream; when the intra-frame BDPCM information indicates that BDPCM is applied to the current block, parsing intra-frame BDPCM direction information on the current block from the bitstream; and reconstructing the current block based on the intra BDPCM direction information.

The invention discloses a trusted dynamic immunization method, device and system based on TPCM (Trusted Pulse Code Modulation). The method comprises the steps that a Jump Label table of the trusted terminal, a static code marked by the Jump Label table and a dynamic code marked by the Jump Label table are obtained through a TPCM of a protection component of the trusted terminal and a trusted agent of a calculation component, and a CONFIGJUMPLABLE compiling option is started by a Linux kernel of the trusted terminal; based on the characteristics that the Jump Label does not change after being loaded, the instructions are the same after the static codes marked by the Jump Label table are compiled each time, and the instructions are likely to change after the dynamic codes marked by the Jump Label table are compiled each time, the TPCM of the protection component is called to measure the Linux system running on the computing component of the trusted terminal; under the condition that the measurement is passed, determining that the state of the Linux system running on the computing component of the trusted terminal is trusted; and under the condition that the measurement is not passed, running according to a corresponding control strategy. According to the application, the technical problem that a JUMP LABEL mechanism in a Linux operating system has potential safety hazards is solved.

A dual-layer optical encryption fluorescent polymer waveguide chip based on optical pulse code modulation technology belongs to the field of functional photonic chip technology. It consists of a substrate layer, a buffer layer, a cladding layer, a bottom waveguide layer, and a top waveguide layer. The cladding layer is divided into three parts: a lower cladding layer, a middle cladding layer, and an upper cladding layer. The bottom waveguide is located within the middle cladding layer, and the top waveguide is located within the upper cladding layer. The bottom and top waveguides do not overlap in the chip's top-view plane. The waveguide layer material is obtained by doping fluorescent small-molecule oligomer chromophores into a polymer material. This invention achieves signal optical pulse coding by modulating the pump light power intensity. By detecting changes in optical transmission loss in the fiber optic system, it determines whether eavesdropping has occurred. Eavesdropping is indicated by optical transmission loss exceeding a threshold. False information is displayed in the bottom waveguide for disguise, while the modulated information is transmitted encrypted through the top waveguide, thus solving the problems of limited controllability and insufficient security in traditional encryption technologies.

The utility model discloses a PCM (pulse code modulation) photocatalytic copper-aluminum composite board, which belongs to the field of copper-aluminum composite boards and comprises a copper-aluminum composite board shell, catalytic devices are arranged at the top and the bottom of the copper-aluminum composite board shell, and each catalytic device comprises two resin bonding boards. A catalytic active plate is fixedly connected to the sides, away from the copper-aluminum composite plate shell, of the two resin bonding plates, a plurality of catalytic material containing grooves are formed in the catalytic active plate, and circulating holes are formed in the catalytic material containing grooves. According to the utility model, the catalytic material placing groove, the circulation hole, the threaded sealing rubber plug, the functional plate and the solvent groove are arranged, the sterilization and deodorization rate of the catalytic material in the threaded sealing rubber plug copper-aluminum composite plate is limited, and the catalytic material placed in the catalytic material placing groove can be communicated through the circulation hole, so that the catalytic rate of the catalytic material is improved; and the catalytic efficiency of the copper-aluminum composite plate can be improved, so that the catalytic efficiency of the copper-aluminum composite plate can be improved.

The present invention relates to a video signal processing method and apparatus using a block DPCM prediction method. The present disclosure relates to a method and apparatus for processing a video signal, and more specifically, comprises the steps of: parsing block-based incremental pulse code modulation (BDPCM) enabling information indicating whether BDPCM has been enabled from a bitstream; when the BDPCM enabling information indicates that the BDPCM has been enabled, the width of the current block is less than or equal to a first value, and the height of the current block is less than or equal to a second value, parsing intra-frame BDPCM information indicating whether to apply the BDPCM to the current block from the bitstream; when the intra-frame BDPCM information indicates that BDPCM is applied to the current block, parsing intra-frame BDPCM direction information on the current block from the bitstream; and reconstructing the current block based on the intra BDPCM direction information.

The application provides a method and device for heterogeneous security reinforcement of a pulse code modulation voice data stream, which comprises: dividing each frame E1 relay code stream data into four functional areas in units of channels; pre-arranging data in a first voice data channel area to be reinforced to form a 16-byte row matrix, and then performing a 128-bit mode grouping algorithm to reinforce the data; pre-arranging data in a second voice data channel area to be reinforced to form a 14-byte row matrix, and then performing an S-box different from the previous step to complete nonlinear permutation; performing XOR calculation on the data in the second voice data channel area to be reinforced by using a dynamic round key of the first voice data channel area to be reinforced, and then performing mixed operation on the data in the two channel areas; pushing the data after reinforcement into an E1 relay code stream sending buffer, and then sequentially sending the data through a relay interface LIU chip when the next 125-microsecond frame synchronization arrives; and performing desolidification processing on the data received by a switch of a receiving end.

An image decoding method performed by a decoding device according to the present document comprises the steps of: acquiring a block-based delta pulse code modulation (BDPCM) flag for a current block; on the basis of the BDPCM flag indicating that BDPCM is applied to the current block, acquiring a BDPCM direction flag for the current block; and storing, as an intra-prediction mode of the current block, an intra-prediction mode of a prediction direction derived on the basis of the BDPCM direction flag.

A first processor, according to an embodiment, may identify an audio codec related to audio frames contained in multimedia content. The first processor may identify playback times of the audio frames. The first processor may combine the respective time differences of the playback times with respect to an expected playback time of one audio frame indicated by the audio codec, and thus obtain a first time point having a time difference exceeding a specific reference value. The first processor may transmit the audio frames to a second processor. The first processor may control a display in order to play a video in the multimedia content. The second processor, on the basis of controlling a speaker by using pulse code modulation (PCM) frames corresponding to the respective audio frames, may transmit, to the first processor, a second time point of the PCM frames played out via the speaker. The first processor, on the basis of receiving, from the second processor, the second time point which is after the first time point, may control the playing of the video so as to at least partially compensate for the time difference.

An image decoding method performed by a decoding device according to the present document is characterized by comprising the steps of: acquiring a block-based delta pulse code modulation (BDPCM) available flag about whether a BDPCM is available for a chroma block and a luma block; acquiring, on the basis of the BDPCM available flag, a BDPCM luma flag about whether to apply the BDPCM to the current luma block; and acquiring, on the basis of the BDPCM available flag, a BDPCM chroma flag about whether to apply the BDPCM to the current chroma blocks.

The application provides an audio data processing method and device for sound wave communication and a storage medium, which comprises the following steps: obtaining initial communication text to be sent, and performing encoding processing on the initial communication text to determine the encoding data corresponding to the initial communication text; the encoding data comprises at least one of check bit data and error correction code data corresponding to the initial communication text; performing frequency conversion on the encoding data to determine the frequency data corresponding to the encoding data; performing audio generation processing on the frequency data by using a pulse code modulation mode and a sine wave function to determine the audio data corresponding to the frequency data; the audio data comprises multiple syllables, and the volume change trend of each syllable from the beginning to the end is first large and then small; the audio data is sent to a receiving end device; and the audio data is used to enable the receiving end device to decode the audio data and then perform sound wave communication. The technical scheme can improve the success rate of sound wave communication.

A method of video encoding includes performing context modeling to determine a context model for each of a number of bins of syntax elements corresponding to residues of a region of a transform skipped block in a current picture. The number of the bins of syntax elements being context coded does not exceed a maximum number of context coded bins set for the region. The method further includes encoding, according to Block Differential Pulse Code Modulation (BDPCM), the syntax elements based on the determined context models. When the maximum number of context coded bins is reached, remaining bins of syntax elements are encoded based on a bypass model.

The invention provides a data processing method of a wireless cache recorder based on 5G transmission, and belongs to the technical field of avionics, and the method specifically comprises the following steps: receiving flight data in real time; compressing the received flight data by adopting a differential pulse code modulation and Huffman coding combined compression algorithm; the compressed data is encrypted by adopting an AES (Advanced Encryption Standard)-256-GCM algorithm; and when the aircraft is in a landing state, the encrypted data are transmitted to a ground data center server in real time through wireless signals. Through the processing scheme provided by the invention, the security and timeliness of data transmission are improved.