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Class 375/240.27 - Error detection or correction


Subclass of Class 375 - Pulse or digital communications
Definition: Subject matter wherein the additional signal processing
No. of patents: 566
Last issue date: 05/29/2012


1                      
NumberTitleIssue Date
8189686Systems and methods for visualizing errors in video signals
Systems and methods for analyzing the performance of a digital network include capturing a stream of digital data, e.g., internet protocol (IP) packets, that represent streaming video, identifying which of the IP packets include bit errors, determining to which of a...
05/29/2012
8189689Receiver for reducing PCR jitter
A receiver receiving a transport stream to demodulate the transport stream into a final output stream, wherein the transport stream comprises a plurality of symbols at least one of which carrying at least one program clock reference (PCR) value, and the final output...
05/29/2012
8189687Data embedding apparatus, data extracting apparatus, data embedding method, and data extracting method
A data embedding apparatus including: a selecting unit for selecting, based upon the second data, a prediction system of calculating a prediction value with respect to data to be processed within the first data; a predicting unit for calculating the prediction value...
05/29/2012
8189688Image decoding device and image decoding method
An image decoding device includes an error detecting unit that detects a decoding error in each unit area in one frame of an image; an error compensating determining unit that determines an error compensating area for which error compensation should be performed for...
05/29/2012
8179982Transmitting additional information in the headers of encapsulating data packets in mobile/handheld (M/H) DTV signals
Apparatus for transmitting digital data in an 8-vestigial sideband (8-VSB) signal format for reception by mobile/handheld (M/H) receivers is described. The apparatus for transmitting digital data includes a generator of MHE packet headers that include additional inf...
05/15/2012
8179981Method and apparatus for determining bit allocation for groups of pixel blocks in a picture according to attention importance level
Optimised bit allocation is important in video compression to increase the coding efficiency, i.e. to make optimum use of the available data rate. In view of the human visual system, a human usually pays more attention to some part of a picture rather than to other ...
05/15/2012
8179980Robust DTV signals that can overcome burst errors up to 1040 bytes or more in length
Electromagnetic signals for transmitting television and other information more robustly have amplitudes modulated in accordance with a digital signal generated by convolutional interleaving and trellis coding of segments of successive data fields, each of which segm...
05/15/2012
8170124MPEG-4 streaming system with adaptive error concealment
An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise i...
05/01/2012
8165226Imaging frame freeze detection
Techniques for detecting faults in a digital video stream include frame freeze detection that can alert an operator of frame freeze in a digital video stream. According to various embodiments, a counter or other code generator is used to place a code into each frame...
04/24/2012
8165225Image data transfer circuit
An image data transfer circuit and an image data transfer method capable of exception processing without affecting image data of normal frames when an error is detected in image data. Image data applied to an input processing section is filtered by a filter, stored ...
04/24/2012
8165224Device and method for improved lost frame concealment
Various embodiments are described herein that make use of a lost frame concealment method for processing data frames received from transmission over a communications channel. The method involves determining whether a current data frame is a bad frame, performing sou...
04/24/2012
8155213Seamless wireless video transmission for multimedia applications
A method of temporal error concealment for generating the image data of the missing macro-blocks in the current frame by using the previous frame and the correct data of the current frame is disclosed. The method includes the steps: first using Optimal Regression Pl...
04/10/2012
8149925Chase algorithm based differential decoder for soft decision Reed Solomon decoding in a QAM system
A novel apparatus and method of differential decoding for use in a communication system such as a cable system. The differential decoding mechanism of the present invention enables the use of the Chase algorithm for Reed Solomon (RS) codes (i.e. non-binary codes). T...
04/03/2012
8144790Broadcast receiver and method of processing data
A broadcast receiver, and a method of processing data are disclosed. The broadcast receiver includes a receiving unit, a RS frame decoder, a decoding unit, and an output unit. The receiving unit receives a broadcast signal multiplexed mobile broadcast service data i...
03/27/2012
8139647Moving image decoding apparatus and moving image decoding method
Moving image decoding apparatus and moving image decoding method wherein the picture quality degradation is small even when an error occurs in decoding or the like in an coding system that refers to more than one frames to perform a prediction coding. An error corre...
03/20/2012
8139648Image processing apparatus and image processing method
A basic pattern generating unit 81 generates a film grain basic pattern 86 in which the histogram of random noise is substantially the same as the film grain basic pattern information 53. The film grain basic pattern 86 is of (64×64) pix...
03/20/2012
8135076Error concealment apparatus and method
An error concealment apparatus and method that can selectively use error concealment techniques according to an error occurrence rate is disclosed. The error concealment apparatus includes an error detection unit for detecting errors occurring in video frames, first...
03/13/2012
8135077Broadcast receiver and method of processing data
A broadcast receiver and a method of processing data are disclosed. The broadcast receiver includes a broadcasting module, at least one function module, and a controller. The broadcasting module receives and processes mobile broadcast signal. The function module out...
03/13/2012
8116383Efficient adaptive mode selection technique for H.264/AVC-coded video delivery in burst-packet-loss networks
A method of an efficient adaptive mode selection for H.264/AVC-coded video delivery in burst-packet-loss networks to generate the image data of the missing macroblocks in the decoded current frame by using the information related to the spatial redundancy in the sam...
02/14/2012
8111757Method and apparatus for video signal processing
A first video signal processor (103) receives a first encoded video signal from which a video unit (201) generates a second encoded video signal, where the second encoded video signal is a reduced data rate version of the first encoded video signal. An...
02/07/2012
8102920Digital broadcasting system and data processing method
The present invention provides a method of processing data in digital broadcasting system. The method includes receiving a broadcast signal including mobile broadcast service data and main broadcast service data, wherein the mobile broadcast service data configures ...
01/24/2012
8102921Digital broadcasting system and data processing method
The present invention provides a method of processing data in digital broadcasting system. The method includes receiving a broadcast signal including mobile broadcast service data and main broadcast service data, wherein the mobile broadcast service data configures ...
01/24/2012
8098740Digital broadcasting system and data processing method
The present invention provides a method of processing data in digital broadcasting system. The method includes receiving a broadcast signal including mobile broadcast service data and main broadcast service data, wherein the mobile broadcast service data configures ...
01/17/2012
8098741Digital broadcasting system and data processing method
The present invention provides a method of processing data in digital broadcasting system. The method includes receiving a broadcast signal including mobile broadcast service data and main broadcast service data, wherein the mobile broadcast service data configures ...
01/17/2012
8094730Hybrid error concealment method
Disclosed herein is a hybrid error concealment method. The hybrid error concealment method of the present invention includes a first step of calculating a side match distortion, measured when a motion vector for an arbitrary intra-frame is assumed to be zero, and th...
01/10/2012
8064527Error concealment in a video decoder
The error concealment technique disclosed herein relates to the use of existing information by the decoder to conceal bitstream errors regardless of what the encoder does. Examples of existing information include, for example, the previous reference frame, macrobloc...
11/22/2011
8054891Channel equalizer and method of processing broadcast signal in DTV receiving system
A channel equalizer includes a first transformer, an estimator, an average calculator, a second transformer, a coefficient calculator, a compensator, and a third transformer. The first transformer converts normal data into frequency domain data, where a known data s...
11/08/2011
8005150Motion image distribution system, motion image distribution method, server for motion image distribution system, and user terminal for motion image distribution system
A motion image distribution system includes a server and a use terminal. The server generates a feature quantity table CHT1 representing a data structure of motion image encoded data VDE, and authenticates the motion image encoded data VDE by using the genera...
08/23/2011
7991054Information signal processing device, information signal processing method, image signal processing device, image displaying device, device and method for producing correction data used in them, device and method for producing coefficient data, programs for executing these methods, and computer-readable medium for storing the program
The present invention relates to an apparatus for processing informational signal etc. that are preferably applied to a digital broadcast receiver etc. A class classification portion (130) generates a class code CL for indicating a class to which pixel data y...
08/02/2011
7991055Method and system for multiple description coding and computer program product therefor
Digital signals, such as image/video signals are converted between a first format and a second format by using Multiple Description Coding, whereby the second format conveys multiple descriptions (D1 to D4; D1′ to D4′) of the digital ...
08/02/2011
7949055Communication system in digital television
A VSB communication system or transmitter for processing supplemental data packets with MPEG-II data packets includes a VSB supplemental data processor and a VSB transmission system. The VSB supplemental data processor includes a Reed-Solomon coder for coding the su...
05/24/2011
7916796Region clustering based error concealment for video data
An error detection and correction circuit for a video decoder that reconstructs a lost macroblock including a clustering circuit, a classification circuit and an error concealment circuit. The clustering circuit clusters macroblocks adjacent to the lost macroblock i...
03/29/2011
7912133Method and device for transmitting uplink signal including data and control information via uplink channel
A method and device for transmitting a first and second uplink signal, each having data and control information is provided. The method includes channel encoding the control information of the second uplink signal based on a number of symbols of control information ...
03/22/2011
7885339Bi-directional temporal error concealment
Systems and methods for bi-directional temporal error concealment are described. In one aspect, a lost frame is detected during encoded video decoding operations. Bi-directional estimations for each pixel of the lost frame are calculated to generate a current frame ...
02/08/2011
7876835Channel equalizer and method of processing broadcast signal in DTV receiving system
A channel equalizer includes a first transformer, an estimator, an average calculator, a second transformer, a coefficient calculator, a compensator, and a third transformer. The first transformer converts normal data into frequency domain data, where a known data s...
01/25/2011
7826537Systems and methods with error resilience in enhancement layer bitstream of scalable video coding
A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer...
11/02/2010
7822124Method and apparatus for adaptive iterative decision feedback control coding in modems
A modem employing feedback control coding to dynamically control signal-to-noise ratios and to identify errored codewords for retransmission. The receive path components of the modem include a signal-to-noise estimator, a feedback controller and a dynamic demapper. ...
10/26/2010
7817723Apparatus and method of optimizing motion estimation parameters for encoding a video signal
An encoder for encoding a video signal comprising a sequence of pictures, comprising a motion estimator for determining a motion estimation among the sequence of pictures, the motion estimation enabling a motion-compensated prediction of a pre-determined set of pict...
10/19/2010
7809066Packet error signal generator
A software packet error system for a High Definition Television (HDTV) receiver. A data packet error signal is transferred from a forward error correcting Reed-Solomon decoder to a transport processor. In response to a segment sync signal, the transport processor ge...
10/05/2010
7801224Optimizing decoders on a hardware platform that supports video acceleration
A method for optimizing the performance of a media acceleration engine which includes providing input data to a replica of a media acceleration engine wherein the input data including a complete set of media streams, processing the input data via the replica of the ...
09/21/2010
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