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Class 375/240.02 - Adaptive


Subclass of Class 375 - Pulse or digital communications
Definition: Subject matter wherein a coding process varies according
No. of patents: 502
Last issue date: 02/14/2012


1                      
NumberTitleIssue Date
8116373Context-sensitive encoding and decoding of a video data stream
Disclosed are methods and devices for compressing and decompressing video data streams, according to which the statistical relationship between image symbols and the context assigned thereto is used for compression. Particularly disclosed is a context-sensitive enco...
02/14/2012
8090014Managing multiview streaming video data composed of frames
A system for managing multiview streaming video data composed of a plurality of frames includes an encoder configured to encode multiple representations of at least one frame of the plurality of frames corresponding to multiple views using different reference frames...
01/03/2012
8077774Automated monitoring of digital video image quality
A system and method for detecting video stream macroblock errors and pixelation by detecting macroblock artifacts in analog television signals from a conventional set top box. ...
12/13/2011
8059712Independently adjusting the quality levels for luminance and chrominance channels in a digital image
A system that compresses a digital image. During operation, the system obtains a digital image in which the image components are de-correlated into separate channels containing luminance information and chrominance information. Next, the system receives a quality nu...
11/15/2011
8040947Bitrate control device for controlling bitrate of video data
A bitrate control device controls bitrate of video data and includes: a setting module that sets, for each frame in the video data, a target code amount to be used in encoding the frame by an encoding module for maintaining a given bitrate; an adjusting module that ...
10/18/2011
8018996Arithmetic decoding apparatus and method
The decoding apparatus enabling high-speed arithmetic decoding in decoding data coded using CABAC is an arithmetic decoding apparatus which receives, as input, coded data obtained by converting multivalue information of syntax into binary data then performing Contex...
09/13/2011
8009730Method for controlling the encoder output bit rate in a block-based video encoder and corresponding video encoder apparatus
Constant-bitrate rate control is very useful for real-time video transmission. However, it is difficult to realize a good CBR rate control in an MPEG4-AVC video codec. According to the invention, an adapted ρ-domain rate control processing for real-time rate contro...
08/30/2011
7986730Methods and apparatus for updating a reduction ratio
According to the present invention, methods and apparatus for updating reduction ratios are provided. An input bit sequence can be altered to provide modified output bit sequence. The input bit sequence may represent information in a portion of data such as a video ...
07/26/2011
7978764Method of video encoding for handheld apparatuses selecting best prediction function according to optimal rate-distortion value
The present invention relates to a method of encoding a sequence of pictures, a picture being divided into blocks of data, said encoding method comprising the steps of:—computing a residual error block from a difference between a current block contained in a curre...
07/12/2011
7940843Method of implementing improved rate control for a multimedia compression and encoding system
The rate controller in a digital video encoding system is responsible for allocating a bit budget for video frames to be encoded. The rate controller considers many different factors when determining the frame bit budget. One of the factors considered is the complex...
05/10/2011
7894520Apparatus and method for generating patterns of forward and backward vectors for frame conversion
The computing forward and backward vectors in unique patterns to achieve improved horizontal and vertical detail of the video display while reducing data processing and storage overhead is disclosed. The invention comprises generating a unique pattern of forward and...
02/22/2011
7876818Image encoding device and image decoding device
Multiplexing means of an image encoding device multiplexes object display speed information or image display absolute time information, and an image decoding device performs image processing on the basis of the multiplexed object display speed information or image d...
01/25/2011
7873104Digital television transmitting system and receiving system and method of processing broadcasting data
A digital television (DTV) transmitting system includes a first frame decoder, a second frame decoder, and a frame multiplexer. The first frame decoder forms first enhanced data frames, encodes each data frame for error correction, forms a first super frame by combi...
01/18/2011
7869502Video coder providing implicit coefficient prediction and scan adaptation for image coding and intra coding of video
A predictive video coder performs gradient prediction based on previous blocks of image data. For a new block of image data, the prediction determines a horizontal gradient and a vertical gradient from a block diagonally above the new block (vertically above a previ...
01/11/2011
7864838Picture encoding device, image decoding device and their methods
A weighting factor mode determination unit determines whether to code an interlaced picture in a field mode or a frame mode, based on a value of a flag “AFF” indicating whether or not to switch between the field mode and the frame mode on a block-by-block basis ...
01/04/2011
7769083Image processing and transmission using high and low compression ratios depending on image change conditions
In an image processing method of sequentially loading, compressing, and transmitting images to thereby display the images, there is provided the image processing method capable of preventing the images from degradation while keeping the responsibility until the imag...
08/03/2010
7746927Robust single-pass variable bit rate encoding
An encoding manager facilitates robust single-pass variable bit rate video encoding of a video sequence. Before encoding the video sequence, the encoding manager determines the size of a buffer to use for keeping track of over/under used bits generated during encodi...
06/29/2010
7720144Signal processing apparatus
An image signal processing apparatus for quantizing an inputted moving image signal according to a quantization step so that a code amount of one frame becomes a target code amount, and for variable-length-coding the quantized moving image signal, in which a minimum...
05/18/2010
7702013Method and arrangement for coding transform coefficients in picture and/or video coders and decoders and a corresponding computer program and a corresponding computer-readable storage medium
The present invention describes a method and an arrangement for coding transform coefficients in picture and/or video coders and decoders and a corresponding computer program and a corresponding computer-readable storage medium, which can particularly be employed as...
04/20/2010
7675969Adaptive rate control for digital video compression
A system and method for adaptively controlling the encoded data rate in a data compression system. The system and method sets up alternative encoded bit streams for each segment of data and selects the alternative that would produce the bit rate closest to a predete...
03/09/2010
7656949Methods and apparatus for performing efficient inverse transform operations
According to the present invention, methods and apparatus for performing efficient inverse transform operations are provided. Zero patterns are identified in a block of transform coefficients to derive zero pattern information. Using the zero pattern information, in...
02/02/2010
7649939Apparatus and method for decoding and computing a discrete cosine transform using a butterfly processor
An apparatus to determine the inverse transform of a block of encoded data the block of encoded data comprising a plurality of compressed frequency domain data elements. An input register is configured to receive a predetermined quantity of data elements. At least o...
01/19/2010
7646809System and method of providing directional information for direct prediction
A system and method are disclosed for decoding signals of a block of image data. The method comprises receiving a parameter or an index associated with a direction of a plurality of prediction directions and decoding a block of image data utilizing image data predic...
01/12/2010
7616687Signal compressing system
A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, an...
11/10/2009
7609760Signal compressing system
A multi-scanner scans a signal according to several different patterns. A scanning pattern selector determines which scanning pattern produced the most efficient coding result, for example, for runlength coding, and outputs a coded signal, coded most efficiently, an...
10/27/2009
7606304Method and apparatus for memory efficient compressed domain video processing
A method for reducing the memory requirements for decoding a bit stream is provided. The method initiates with receiving a video bit stream. Then, a frame of the bit stream is decoded into a discrete cosine transform (DCT) domain representation. Next, non-zero coeff...
10/20/2009
7573938Methods and apparatus for decoding and displaying different resolution video signals
Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode H...
08/11/2009
7469008Image decoding apparatus, image coding apparatus, image communications system and coded bit stream converting apparatus
An image decoding apparatus is capable of decoding coded bit streams with different coding schemes. The image decoding apparatus includes a coding scheme decision section for deciding a coding scheme from coding scheme identification information multiplexed into a c...
12/23/2008
7469007Transcoding system using encoding history information
The present invention provides a transcoder having a MPEG decoder and a MPEG encoder, for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process. The MPEG encoder receives a past encoding parameters generated at...
12/23/2008
7436454Method and apparatus for transmitting encoded information based upon piority data in the encoded information
A reception control section 11 for receiving the information including data and its transmission format information from a memory or communication channel, a separating section 12 for analyzing and separating received information, a transmitting sectio...
10/14/2008
7436890Quantization control system for video coding
The present invention provides a quantization control system for video coding, for optimizing bit allocation based on visual priority which expresses at high precision human visual characteristics for videos, thereby improving subjective image quality of the whole i...
10/14/2008
7432835Variable length decoding method and device
A variable length decoding device comprises a CPU, a variable length decoding unit, an encoded data memory, a decoded data memory, and a mass memory. The variable length decoding unit comprises a decoding table memory operable to store decoding table, a standard inf...
10/07/2008
7430329Human visual system (HVS)-based pre-filtering of video data
An adaptive pre-processing technique is provided to reduce perceptually unimportant information in a frame (such as some of the high frequency information) so as to optimize compression efficiency and to maximize perceived video quality of a compressed video sequenc...
09/30/2008
7421025Macroblock level adaptive frame/field coding for digital video content
A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into sma...
09/02/2008
7421134Image processing apparatus and method for moving object-adaptive compression
An image processing apparatus is adapted to a surveillance camera system, and a CPU included in the surveillance camera system divides a plurality of continuous screens of an image signal into a plurality of blocks by each screen, and detects a specific object, whic...
09/02/2008
7408984Method and system for multiple pass video coding
A real-time MPEG video coding system with information look-ahead for constant bit rate (CBR) applications, such as, for example, Video-on-Demand (VoD) over ADSL. This scheme employs two MPEG encoders. The second encoder has a buffer to delay the input by an amount o...
08/05/2008
7408488Digital signal coding apparatus, digital signal decoding apparatus, digital signal arithmetic coding method and digital signal arithmetic decoding method
A digital signal coding apparatus and method makes a compression coding of a digital signal. The coding apparatus and method codes the digital signal by determining a context model to be used for each type of coding data among a plurality of context models. When the...
08/05/2008
7397852Image processing apparatus and method, and image processing program
Picture data is compressed and encoded in consideration of visual characteristics of human beings against colors. A color of pixels is detected corresponding to color difference components Cb and Cr for each sub block into which a macro block is divided. Each sub bl...
07/08/2008
7391808System and method for upgrading processing capabilities of a media center
Video data encoded according to new compression standards may be processed by an existing client terminal using an adaptive module that transcodes the video data into a format compatible with the processing capabilities of the client terminal. Further, the adaptive ...
06/24/2008
7388912Systems and methods for adjusting targeted bit allocation based on an occupancy level of a VBV buffer model
Methods and apparatus are provided to advantageously improve bit rate control in a video encoder, such as an MPEG video encoder. The targeted bit allocation for a picture to be encoded is advantageously varied based on an occupancy level of a buffer model, such as a...
06/17/2008
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