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5745 results about "Bitstream" patented technology
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A bitstream (or bit stream), also known as binary sequence, is a sequence of bits. A bytestream is a sequence of bytes. Typically, each byte is an 8-bit quantity (octets), and so the term octet stream is sometimes used interchangeably. An octet may be encoded as a sequence of 8 bits in multiple different ways (see endianness) so there is no unique and direct translation between bytestreams and bitstreams.
Pre-paid usage system for encoded information reading terminals
A fleet management system for managing a fleet of encoded information reading (EIR) terminals can comprise one or more computers, a fleet management software module, and a payment processing software module in communication with the fleet management software module. The fleet management software module can be configured, responsive to receiving a customer initiated request, to generate an unlocking message upon processing a payment by the payment processing software module. The unlocking message can be provided by a bar code to be read by an EIR terminal, or by a bit stream to be transferred to an EIR terminal via network. Each EIR terminal can be configured to perform not more than a pre-defined number of EIR operations responsive to receiving the unlocking message.
Owner:METROLOGIC INSTR
Combined motion vector and reference index prediction for video coding
ActiveUS20090304084A1Improve coding efficiencyImprove compression efficiencyColor television with pulse code modulationColor television with bandwidth reductionMotion vectorVideo encoding
A system and method for improving the coding efficiency of motion vector information in video coding. According to various embodiments, a list of motion vector predictor candidates is arranged according to predefined rules. Each motion vector also has a reference index associated with it. One of the motion vector candidates is then selected as a predictor based on predefined rules, or the selection is explicitly signaled in the bitstream. The reference index associated with the selected motion vector is used as a reference index for the current block. The reference index is predicted along with the motion vector. Such embodiments can improve the compression efficiency of modern video codecs.
Owner:NOKIA TECHNOLOGLES OY
Channel equalization system and method
InactiveUS6904110B2Increase high performance and data rate capacityLow costMultiple-port networksChannel dividing arrangementsFiberEngineering
A system and method for delivering increases speed, security, and intelligence to wireline and wireless systems. The present invention increases channel capacity by using a parallel or multi-channel structure in such wireless and wireline at the edge or the core of. This new architecture of the present invention uses parallel bitstreams in a flexible way and distributed switching / routing technique, is not only to avoid the potential bottlenet of centralized switches, but also to increase speed with intelligence that is seamlessly integrating into the Fiber Optic Backbone such as WDM and SONET of the MAN / WAN network with a Real-time guarantees, different types of traffic (such as Stringent synchronous, isochronous, and asynchronous data messages) with different demands, and privacy & security of multi access and integrated services environment.
Owner:B C LEOW
Moving picture variable bit rate coding apparatus, moving picture variable bit rate coding method, and recording medium for moving picture variable bit rate coding program
InactiveUS6259739B1Improved coding resultIncrease the compression ratioTelevision system detailsPicture reproducers using cathode ray tubesComputer scienceTime processing
A moving picture variable bit rate coding apparatus receives digitized moving pictures and subjects them to coding according to a variable bit rate method using real time processing in response to the input of the pictures. The apparatus performs variable bit rate coding in real time by sequentially performing blocking, conversion processing, quantization processing, and generation of bit streams in response to the input of digitized moving picture data, and setting a quantization scale used for quantization corresponding to a quantity of generated bit streams to perform coding processing and control of quantization in parallel.
Owner:PANASONIC CORP
Space-time processing for multiple-input, multiple-output, wireless systems
InactiveUS6888809B1Most capacityMost performanceSpatial transmit diversityPolarisation/directional diversityMultiple inputCovariance matrix
In a MIMO system the signals transmitted from the various antennas are processed so as to improve the ability of the receiver to extract them from the received signal even in the face of some correlation. More specifically the number of bit streams that is transmitted simultaneously is adjusted, e.g., reduced, depending on the level of correlation, while multiple versions of each bit stream, variously weighted, are transmitted simultaneously. The variously weighted versions are combined to produced one combined weighted signal. The receiver processes the received signals in the same manner as it would have had all the signals reaching the receive antennas been uncorrelated. The weight vectors may be determined by the forward channel transmitter using the channel properties of the forward link which are made known to the transmitter of the forward link by being transmitted from the receiver of the forward link by the transmitter of the reverse link or the weight vectors may be determined by the forward channel transmitter using the channel properties of the forward link and the determined weight vectors are made known to the transmitter of the forward link by being transmitted from the receiver of the forward link by the transmitter of the reverse link. The channel properties used to determine the weight vectors may include the channel response from the transmitter to the receiver and the covariance matrix of noise and interference measured at the receiver.
Owner:ALCATEL-LUCENT USA INC
Coding, storage and signalling of scalability information
ActiveUS20060256851A1Reduce computational complexityAvoid inclusionsColor television with pulse code modulationColor television with bandwidth reductionExtensibilityComputer architecture
A method and device for encoding, decoding, storage and transmission of a scalable data stream to include layers having different coding properties including: producing one or more layers of the scalable data stream, wherein the coding properties include at least one of the following: Fine granularity scalability information; Region-of-interest scalability information; Sub-sample scalable layer information; Decoding dependency information; and Initial parameter sets, and signaling the layers with the characterized coding property such that they are readable by a decoder without the need to decode the entire layers. A corresponding method of encoding, decoding, storage, and transmission of a scalable bit stream is also disclosed, wherein at least two scalability layers are present and each layer has a set of at least one property, such as those above identified.
Owner:NOKIA TECHNOLOGLES OY
Content adaptive video encoder
InactiveUS6909745B1Improve efficiencyColor television with pulse code modulationColor television with bandwidth reductionAdaptive encodingSubject matter
A system for content adaptive encoding and decoding video is disclosed. The system comprises modules for segmenting video content into segments based on predefined classifications or models. Examples of such classifications comprise action scenes, slow scenes, low or high detail scenes, and brightness of the scenes. Based on the segment classifications, each segment is encoded with a different encoder chosen from a plurality of encoders. Each encoder is associated with a model. The chosen encoder is particularly suited to encoding the unique subject matter of the segment. The coded bit-stream for each segment includes information regarding which encoder was used to encode that segment. A matching decoder of a plurality of decoders is chosen using the information in the coded bitstream to decode each segment using a decoder suited for the classification or model of the segment. If scenes exist which do not fall in a predefined classification, or where classification is more difficult based on the scene content, these scenes are segmented, coded and decoded using a generic coder and decoder.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
Image encoding device, image decoding device, image encoding method and image decoding method
ActiveUS20090003441A1Flexible choiceOptimal encoding processColor television with pulse code modulationColor television with bandwidth reductionVariable-length codePattern recognition
An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
Owner:MITSUBISHI ELECTRIC CORP
Method and apparatus for video coding and decoding
InactiveUS20100189182A1Pulse modulation television signal transmissionPicture reproducers using cathode ray tubesVideo encodingOperating system
A method comprises receiving a bitstream including a sequence of access units; decoding a first decodable access unit in the bitstream; determining whether a next decodable access unit in the bitstream can be decoded before an output time of the next decodable access unit; and skipping decoding of the next decodable access unit based on determining that the next decodable access unit cannot be decoded before the output time of the next decodable access unit.
Owner:NOKIA CORP
Scalable and embedded codec for speech and audio signals
InactiveUS7272556B1Improve signal reconstruction accuracyImprove reconstruction accuracySpeech analysisMultiple modesAudio signal flow
A system and method for processing of audio and speech signals is disclosed, which provide compatibility over a range of communication devices operating at different sampling frequencies and / or bit rates. The analyzer of the system divides the input signal in different portions, at least one of which carries information sufficient to provide intelligible reconstruction of the input signal. The analyzer also encodes separate information about other portions of the signal in an embedded manner, so that a smooth transition can be achieved from low bit-rate to high bit-rate applications. Accordingly, communication devices operating at different sampling rates and / or bit-rates can extract corresponding information from the output bit stream of the analyzer. In the present invention embedded information generally relates to separate parameters of the input signal, or to additional resolution in the transmission of original signal parameters. Non-linear techniques for enhancing the overall performance of the system are also disclosed. Also disclosed is a novel method of improving the quantization of signal parameters. In a specific embodiment the input signal is processed in two or more modes dependent on the state of the signal in a frame. When the signal is determined to be in a transition state, the encoder provides phase information about N sinusoids, which the decoder end uses to improve the quality of the output signal at low bit rates.
Owner:ALCATEL LUCENT SAS
Method and system for randomly accessing multiview videos with known prediction dependency
ActiveUS20070121722A1Reduce in quantityTelevision system detailsColor television with pulse code modulationSpatial predictionComputer graphics (images)
A method randomly accesses multiview videos. Multiview videos are acquired of a scene with corresponding cameras arranged at poses, such that there is view overlap between any pair of cameras. V-frames are generated from the multiview videos. The V-frames are encoded using only spatial prediction. Then, the V-frames are inserted periodically in an encoded bit stream to provide random temporal access to the multiview videos. Additional view dependency information enables the decoding of a reduced number of frames prior to accessing randomly a target frame for a specified view and time, and decoding the target frame.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Entropy coding
ActiveUS20130027230A1Reduce complexityOverhead for transmitting the partial bitstream can be kept smallCode conversionDigital video signal modificationEntropy encodingComputer science
An encoder for encoding a sequence of symbols is described which includes an assigner configured to assign a number of parameters to each symbol of the sequence of symbols based on information contained within previous symbols of the sequence of symbols; a plurality of entropy encoders each of which is configured to convert the symbols forwarded to the respective entropy encoder into a respective bitstream; and a selector configured to forward each symbol to a selected one of the plurality of entropy encoders, the selection depending on the number of parameters assigned to the respective symbol.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
Efficient decoded picture buffer management for scalable video coding
InactiveUS20070086521A1Color television with pulse code modulationColor television with bandwidth reductionInter layerComputer graphics (images)
A system and method for enabling the removal of decoded pictures from a decoded picture buffer as soon as the decoded pictures are no longer needed for prediction reference and future output. An indication is introduced into the bitstream as to whether a picture may be used for inter-layer prediction reference, as well as a decoded picture buffer management method which uses the indication. The present invention includes a process for marking a picture as being used for inter-layer reference or unused for inter-layer reference, a storage process of decoded pictures into the decoded picture buffer, a marking process of reference pictures, and output and removal processes of decoded pictures from the decoded picture buffer.
Owner:NOKIA CORP
Picture coding supporting block merging and skip mode
ActiveUS20130279577A1Saves bit rateIncrease overheadColor television with pulse code modulationColor television with bandwidth reductionCurrent sampleAlgorithm
A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may signalize whether the coding parameters associated with a current sample set are to be set according to a merge candidate or to be retrieved from the bitstream, and whether the current sample set of the picture is to be reconstructed based on a prediction signal depending on the coding parameters associated with the current sample set, without any residual data, or to be reconstructed by refining the prediction signal depending on the coding parameters associated with the current sample set by means of residual data within the bitstream.
Owner:GE VIDEO COMPRESSION LLC
Facility for transporting TDM streams over an asynchronous ethernet network using internet protocol
InactiveUS6963561B1Low costTime-division multiplexData switching by path configurationInternet protocol suiteSTM-1
A transport facility adapted to transport TDM bit streams using IP packets over an asynchronous Ethernet network. TDM bit streams such as E1, T1, E3, T3, OC-3, OC-12, STM-1, STM-4, etc. are received, buffered and encapsulated into Ethernet frames. The Circuit Emulation Device (CED) receives, buffers and assembles in real-time ingress data from TDM ports into Ethernet Frames and forwards them to an Ethernet interface. The TDM data is encapsulated within RTP, UDP and IP packets before being encapsulated within an Ethernet frame. In the egress direction, Ethernet frames enter the encapsulation / segmentation processor from the Ethernet port and the IP, UDP and RTP packets are extracted from the frame. TDM data is extracted and the bit streams are re-generated and forwarded to the TDM ports for transmission over legacy TDM facilities.
Owner:VENTURE LENDING & LEASING III
Real-time video coding/decoding
ActiveUS20050276323A1Picture reproducers using cathode ray tubesCode conversionMotion vectorDownscaling
A video codec for real-time encoding / decoding of digitized video data with high compression efficiency, comprising a frame encoder receiving input frame pixels; a codec setting unit for setting and storing coding setting parameters; a CPU load controller for controlling desired frame encoding time and CPU loading; a rate controller for controlling frame size; a coding statistics memory for storing frequency tables for arithmetic coding of bitstream parameters and a reference frame buffer for storing reference frames. The frame encoder comprises a motion estimation unit, a frame head coding unit, a coded frame reconstruction and storage unit and a macroblock encoding unit. The macroblock encoding unit provides calculation of texture prediction and prediction error, transforming texture prediction error and quantization of transform coefficient, calculation of motion vector prediction and prediction error and arithmetic context modeling for motion vectors, header parameters and transform coefficients. The codec also includes a deblocking unit for processing video data to eliminate blocking effect from restored data encoded at high distortion level, which may be a part of encoder or decoder, an internal resize unit, providing matching downscaling of a frame before encoding and upscaling of decoded frame according to the coding setting parameters, and a noise suppression unit.
Owner:BEAMR IMAGING LTD
Scalable and embedded codec for speech and audio signals
InactiveUS20080052068A1Improve reconstruction accuracySpeech analysisMultiple modesCommunication device
Owner:ALCATEL LUCENT SAS
Integrated content guide for interactive selection of content and services on personal computer systems with multiple sources and multiple media presentation
InactiveUS6600503B2Television system detailsAnalogue secracy/subscription systemsRelevant informationInteractive television
Owner:HEWLETT PACKARD DEV CO LP
Methods and apparatus for embedding and format conversion of compressed video data
InactiveUS7039116B1Easy to useEasy to embedPicture reproducers using cathode ray tubesPicture reproducers with optical-mechanical scanningData streamComputer network
System and methods are provided for modifying a compressed video data stream to match the available video decoding capability of a target decoder. Compressed video content can be embedded in another compressed bitstream to allow more efficient usage of available channel bandwidth. Format conversion allows flexible transmission of video content even if the original format and available decompression capabilities are mismatched.
Owner:CISCO TECH INC
Picture coding supporting block partitioning and block merging
ActiveUS20130287116A1Improve coding efficiencyOverhead signaling is reducedColor television with pulse code modulationColor television with bandwidth reductionComputer architectureBitstream
A further coding efficiency increase may be achieved if for a current block of a picture, for which the bit stream signals one of supported partitioning patterns, a reversal of the partitioning by block merging is avoided. In particular, if the signaled one of the supported partitioning patterns specifies a subdivision of the block into two or more further blocks, a removal of certain coding parameter candidates for all further blocks, except a first further block of the further blocks in a coding order, is performed. Particularly, those coding parameter candidates are removed from the set of coding parameter candidates for the respective further block, the coding parameters of which are the same as coding parameters associated with any of the further blocks which, when being merged with the respective further block, would result in one of the supported partitioning pattern. This avoids redundancy between partitioning coding and merging coding.
Owner:GE VIDEO COMPRESSION LLC
Smart Video Surveillance System Ensuring Privacy
InactiveUS20070296817A1Closed circuit television systemsBurglar alarmComputer hardwareVideo monitoring
This invention describes a video surveillance system which is composed of three key components 1—smart camera(s), 2—server(s), 3—client(s), connected through IP-networks in wired or wireless configurations. The system has been designed so as to protect the privacy of people and goods under surveillance. Smart cameras are based on JPEG 2000 compression where an analysis module allows for efficient use of security tools for the purpose of scrambling, and event detection. The analysis is also used in order to provide a better quality in regions of the interest in the scene. Compressed video streams leaving the camera(s) are scrambled and signed for the purpose of privacy and data integrity verification using JPSEC compliant methods. The same bit stream is also protected based on JPWL compliant methods for robustness to transmission errors. The operations of the smart camera are optimized in order to provide the best compromise in terms of perceived visual quality of the decoded video, versus the amount of power consumption. The smart camera(s) can be wireless in both power and communication connections. The server(s) receive(s), store(s), manage(s) and dispatch(es) the video sequences on wired and wireless channels to a variety of clients and users with different device capabilities, channel characteristics and preferences. Use of seamless scalable coding of video sequences prevents any need for transcoding operations at any point in the system.
Owner:EMITALL SURVEILLANCE
Image encoding device, image decoding device, image encoding method and image decoding method
ActiveUS20090003717A1Flexible choiceOptimal encoding processCharacter and pattern recognitionDigital video signal modificationVariable-length codePattern recognition
An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
Owner:MITSUBISHI ELECTRIC CORP
Method and apparatus for video coding, predecoding, and video decoding for video streaming service, and image filtering method
ActiveUS20050195899A1Improve efficiencyImprove image qualityPulse modulation television signal transmissionPicture reproducers using cathode ray tubesComputer graphics (images)Video encoding
A method and apparatus for video encoding, predecoding, and video decoding for video streaming services. The video encoding method includes encoding first and second video sequences into first and second bitstreams using scalable video coding, wherein at least one of resolution, frame rate, and image quality of the second video sequence is different from that of the first video sequence, and combining the first and second bitstreams into a super bitstream.
Owner:SAMSUNG ELECTRONICS CO LTD
Serial digital interface for wireless network radios and baseband integrated circuits
A wireless radio for wireless networking communication systems includes a radio frequency (RF) transceiver integrated circuit (IC) and a baseband digital signal processing (DSP) IC. A bidirectional serial digital interface couples data between the RF transceiver IC and the DSP IC to provide a high data rate and low noise. The bidirectional serial digital interface includes a first serial data connection and a second serial data connection. In one embodiment, the RF transceiver IC has a single bit sigma delta A / D modulator to convert an analog signal into a first serial digital bit stream for communication over the first serial data connection. In one embodiment, the DSP IC has a single bit sigma delta digital modulator to generate a second serial digital bit stream for communication over the second serial data connection.
Owner:MAXIM INTEGRATED PROD INC
System and method for multiple channel statistical re-multiplexing
Methods and apparatus are provided for statistical re-multiplexing of multiple channels. Mechanisms are provided to manipulate and / or recode multiple compressed bit streams such that a resulting bit stream has a rate matching adjusted based on the allowable output channel rate. Loss-less transmission of compressed video bit streams can be output in real-time. In one example, the system includes encoders and demultiplexers on multiple channels. The demultiplexers are connected to a scheduler and multiplexer to provide an output bit stream at a given channel rate.
Owner:CISCO TECH INC
Point Cloud Compression using Prediction and Shape-Adaptive Transforms
InactiveUS20170214943A1Geometric image transformationImage codingPoint cloudComputer graphics (images)
A method compresses a point cloud composed of a plurality of points in a three-dimensional (3D) space by first acquiring the point cloud with a sensor, wherein each point is associated with a 3D coordinate and at least one attribute. The point cloud is partitioned into an array of 3D blocks of elements, wherein some of the elements in the 3D blocks have missing points. For each 3D block, attribute values for the 3D block are predicted based on the attribute values of neighboring 3D blocks, resulting in a 3D residual block. A 3D transform is applied to each 3D residual block using locations of occupied elements to produce transform coefficients, wherein the transform coefficients have a magnitude and sign. The transform coefficients are entropy encoded according the magnitudes and sign bits to produce a bitstream.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Method and System for Processing Multiview Videos for View Synthesis Using Skip and Direct Modes
ActiveUS20120062756A1Television system detailsColor television detailsComputer graphics (images)Side information
Multiview videos are acquired by overlapping cameras. Side information is used to synthesize multiview videos. A reference picture list is maintained for current frames of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list with a skip mode and a direct mode, whereby the side information is inferred from the synthesized reference picture. Alternatively, the depth images corresponding to the multiview videos of the input data, and this data are encoded as part of the bitstream depending on a SKIP type.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Video coding with residual color conversion using reversible YCoCg
InactiveUS20050259730A1Improve coding efficiencyHigh color fidelityColor television with pulse code modulationColor television with bandwidth reductionLossless codingFrame based
A video coding algorithm supports both lossy and lossless coding of video while maintaining high color fidelity and coding efficiency using an in-loop, reversible color transform. Accordingly, a method is provided to encode video data and decode the generated bitstream. The method includes generating a prediction-error signal by performing intra / inter-frame prediction on a plurality of video frames; generating a color-transformed, prediction-error signal by performing a reversible color-space transform on the prediction-error signal; and forming a bitstream based on the color-transformed prediction-error signal. The method may further include generating a color-space transformed error residual based on a bitstream; generating an error residual by performing a reversible color-space transform on the color-space transformed error residual; and generating a video frame based on the error residual.
Owner:SHARP LAB OF AMERICA INC
Redundant packets for streaming video protection
InactiveUS20050013249A1Reduce complexitySimple methodError prevention/detection by using return channelTransmission systemsPacket lossLive feedback
A method transmits a video over a network as a bit stream of packets. Real-time feedback information on conditions of the network is received while transmitting the packets. A probability of packet loss is based on the real-time feedback. Then, redundant packets are generated for selected packets of the bit stream if the probability of packet loss is greater than a predetermined threshold.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Lossless image encoding/decoding method and apparatus using inter-color plane prediction
InactiveUS20050013370A1Improve compression efficiencyPicture reproducers using cathode ray tubesCode conversionColor image codingLossless image coding
A lossless image encoding / decoding method and apparatus. The lossless color image encoding apparatus includes a motion prediction image generator estimating a motion between a previous image and a current image and outputting a corresponding prediction image, a residue generator generating a temporal residue corresponding to a difference between a prediction image generated by the motion prediction image generator and the corresponding block of the current image with respect to different components of the color image, a prediction residue generator generating prediction residues by defining a linear-transformed value of one residue among the different components of the color image output from the residue generator as a predictor and using differences between each of the residues of the other components and the predictor, and an entropy encoder receiving the residue forming the predictor from the residue generator and the prediction residues from the prediction residue generator and generating a bitstream. Encoding methods, decoding apparatuses, and decoding methods can be implemented similarly.
Owner:SAMSUNG ELECTRONICS CO LTD
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