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公开(公告)号：US20190098315A1
公开(公告)日：2019-03-28
申请号：US16200378
申请日：2018-11-26
IPC分类号： H04N19/139 , H04N19/65 , H04N19/176 , H04N19/103 , H04N19/192 , H04N19/89 , H04N19/52 , H04N19/46
摘要： For an image portion to encode an initial set of motion information predictors is obtained. It is tested whether the number of motion information predictors in the initial set is lower than a target number and, if so, one or more motion information predictors are added to the initial set to generate a set of motion information predictors having controlled diversity. The motion information predictors of the initial set are actual motion information predictors, having motion vectors obtained from image portions of the image being encoded or of a reference image, and potential motion information predictors for addition include one or more further such actual motion information predictors and also include one or more virtual motion information predictors not having motion vectors obtained from image portions of said image being encoded or of a reference image. A motion information predictor for the image portion to encode is selected from the generated set of motion information predictors.
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公开(公告)号：US10194172B2
公开(公告)日：2019-01-29
申请号：US15678982
申请日：2017-08-16
IPC分类号： H04N19/17 , H04N19/40 , H04N19/44 , H04N19/70 , H04N19/80 , H04N13/161 , H04N13/172 , H04N13/178 , H04N13/218 , H04N19/172 , H04N19/423 , H04N19/587 , H04N19/597 , H04N19/895 , H04N13/10 , H04N19/85 , H04N19/86 , H04N19/89 , H04N19/154
摘要： An encoding device evaluates a plurality of processing and/or post-processing algorithms and/or methods to be applied to a video stream, and signals a selected method, algorithm, class or category of methods/algorithms either in an encoded bitstream or as side information related to the encoded bitstream. A decoding device or post-processor utilizes the signaled algorithm or selects an algorithm/method based on the signaled method or algorithm. The selection is based, for example, on availability of the algorithm/method at the decoder/post-processor and/or cost of implementation. The video stream may comprise, for example, downsampled multiplexed stereoscopic images and the selected algorithm may include any of upconversion and/or error correction techniques that contribute to a restoration of the downsampled images.
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公开(公告)号：US10178397B2
公开(公告)日：2019-01-08
申请号：US14665923
申请日：2015-03-23
IPC分类号： H04N19/13 , H04N19/166 , H04N19/187 , H04N19/154 , H04N19/91 , H04N19/37 , H04N19/88 , H04N19/60 , H04N19/70 , H04N19/89 , H04N19/30
摘要： In an example, a method of coding video data includes coding one or more non-video coding layer (VCL) network abstraction layer (NAL) units of a layer of a multi-layer bitstream, where the one or more non-VCL NAL units contain a decoded picture hash SEI message. The method also includes determining a set of layers of the multi-layer bitstream to which the decoded picture hash SEI message is applicable based on a layer identifier of the one or more non-VCL NAL units containing the decoded picture hash SEI message.
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公开(公告)号：US20180376169A1
公开(公告)日：2018-12-27
申请号：US15633661
申请日：2017-06-26
申请人： NETFLIX, Inc.
发明人： Frederic TURMEL , Nicholas NEWELL
摘要： An endpoint device outputs frames of test media during a testing procedure. Each frame of test media includes a test pattern. A test module coupled to the endpoint device samples the test pattern and transmits sample data to a media test engine. The media test engine decodes a binary number from the test pattern and then converts the binary number to an integer value that is associated with the corresponding frame. The media test engine then analyzes sequences of these integer values to identify playback errors associated with the endpoint device.
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公开(公告)号：US20180367227A1
公开(公告)日：2018-12-20
申请号：US16113827
申请日：2018-08-27
申请人： LG ELECTRONICS INC.
发明人： Jangwon LEE , Sejin OH , Woosuk KWON , Kyoungsoo MOON , Woosuk KO , Sungryong HONG
IPC分类号： H04H20/71 , H04N21/61 , H04N21/235 , H04L29/06 , H04N21/2362 , H04N21/84 , H04N21/236 , H04L29/08 , H04N19/89
CPC分类号： H04H20/71 , H04L65/4069 , H04L65/4076 , H04L65/602 , H04L65/607 , H04L67/02 , H04N19/89 , H04N21/235 , H04N21/236 , H04N21/23614 , H04N21/2362 , H04N21/6131 , H04N21/84
摘要： A device with one or more processors for processing broadcast signals, the device including a depacketizing processor for extracting one or more delivery objects from one or more Layered Coding Transport (LCT) packets of the broadcast signals based on signaling information including mapping information, wherein the one or more LCT packet are used to transport the one or more delivery objects including service data for one or more broadcast services of the broadcast signals, wherein the one or more delivery object are carried in one or more transport sessions, wherein each LCT packet includes a header having a Transport Object Identifier (TOI) identifying a delivery object being carried in the each LCT packet, wherein the mapping information is used to establish a one-to-one mapping between the TOI and a uniform resource locator (URL) for the delivery object, wherein the one or more LCT packets and the signaling information are transmitted separately, wherein the header of each LCT packet further includes type information indicating whether a type of the delivery object being carried in the each LCT packet is a media segment type or an initialization segment type and a decoding processor for decoding the service data for the broadcast service.
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公开(公告)号：US10075710B2
公开(公告)日：2018-09-11
申请号：US14353351
申请日：2011-11-24
申请人： Fan Zhang , Ning Liao , Kai Xie , Zhibo Chen
发明人： Fan Zhang , Ning Liao , Kai Xie , Zhibo Chen
IPC分类号： H04N19/89 , H04N17/00 , H04N19/895
CPC分类号： H04N19/176 , H04N17/004 , H04N19/895
摘要： A particular implementation receives a bitstream and derives parameters from the bitstream. The parameters include quantization parameters, content unpredictability parameters, ratios of lost blocks, ratios of propagated blocks, error concealment distances, motion vectors, durations of freezing, and frame rates. Using these parameters, a compression distortion factor, a slicing distortion factor, and a freezing distortion factor are estimated respectively for distortions resulting from video compression, a slicing mode error concealment, and a freezing slicing mode error concealment. The distortion factors are then mapped to a composite video quality score. For applications with limited computational power, the estimation of distortion factors can be simplified. In particular, the compression distortion factor, the slicing distortion factor, and the freezing distortion factor can be predicted from quantization parameters, ratios of lost blocks, and durations of freezing, respectively.
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公开(公告)号：USRE46838E1
公开(公告)日：2018-05-08
申请号：US14319415
申请日：2014-06-30
申请人： LG ELECTRONICS INC.
发明人： Hyoung Gon Lee , In Hwan Choi , Kook Yeon Kwak , Jong Moon Kim , Won Gyu Song , Byoung Gill Kim , Jin Woo Kim
IPC分类号： H04N5/38 , H04N21/434 , H04N21/236 , H04N21/2362 , H04N21/2365 , H04N19/89 , H04N21/435 , H04N21/438 , H04N21/4425 , H04N21/235
CPC分类号： H04N21/4347 , H04N19/89 , H04N21/235 , H04N21/23611 , H04N21/2362 , H04N21/2365 , H04N21/435 , H04N21/4382 , H04N21/4425
摘要： A digital television (DTV) receiving system includes a tuner, a demodulator, a known data detector, an equalizer, a transmission detector, and a block decoder. The tuner receives a DTV signal having a data frame in which main and mobile service data are multiplexed. The demodulator demodulates the DTV signal, and the known data detector detects known data included in the mobile service data. The equalizer equalizes the demodulated DTV signal using the detected known data, and the transmission parameter detector detects an error correction mode from the equalized DTV signal. Finally, the block decoder decodes the equalized DTV signal for error correction using the detected error correction mode.
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公开(公告)号：US20180115391A1
公开(公告)日：2018-04-26
申请号：US15719396
申请日：2017-09-28
申请人： LG Electronics Inc.
发明人： Pilsup SHIN , Jeongwoo KIM , Minsung KWAK
IPC分类号： H04L1/00 , H04N21/438 , H04N21/434 , H04N21/2383 , H04N21/2362 , H03M13/35 , H04N19/70 , H03M13/29 , H03M13/27 , H04N19/89 , H03M13/09 , H03M13/15
CPC分类号： H04L1/0041 , H03M13/09 , H03M13/1515 , H03M13/2721 , H03M13/2915 , H03M13/2936 , H03M13/356 , H04N19/70 , H04N19/89 , H04N21/2362 , H04N21/2383 , H04N21/4345 , H04N21/4382
摘要： The invention relates to a transmitting system, comprising an SNS client that receives SNS messages from at least one SNS server, and a transmitter which transmits a broadcast signal, including the SNS messages and mobile service data, for a mobile broadcast. The transmitter includes: an RS frame encoder, which performs RS encoding and CRC encoding on the mobile service data for the mobile broadcast so as to build RS frames, and divides each RS frame into a plurality of portions; a group-forming unit, which forms data groups that contain each of the plurality of portions, and which adds known data sequences and signaling data to each data group; an inter-leaver for interleaving data of the data groups; and a trellis encoding unit for trellis-encoding the interleaved data.
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公开(公告)号：US09930364B2
公开(公告)日：2018-03-27
申请号：US14879888
申请日：2015-10-09
申请人： RGB SYSTEMS, INC.
发明人： Peter Lionel Smith
IPC分类号： H04N19/96 , H04N19/63 , H04N19/68 , H04N19/176 , H04N19/70 , H04N19/64 , H04N19/61 , H04N19/107 , H04N19/132 , H04N19/17 , H04N19/635 , H04N19/42 , H04N19/89 , H04N19/645 , H04N19/86 , H04N19/507 , H04N19/174 , H04N19/186 , H04N19/51 , H04N19/66 , H04N19/169 , H04N19/33 , H04N19/182 , H04N19/423 , H04N19/13
CPC分类号： H04N19/68 , H04N19/107 , H04N19/13 , H04N19/132 , H04N19/17 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/1883 , H04N19/33 , H04N19/42 , H04N19/423 , H04N19/507 , H04N19/51 , H04N19/61 , H04N19/63 , H04N19/635 , H04N19/645 , H04N19/647 , H04N19/66 , H04N19/70 , H04N19/86 , H04N19/89 , H04N19/96
摘要： Methods of data encoding using trees formed with logic gates are described which lead to spatial compression of image data. Data encoding is achieved using a five-level wavelet transform, such as the Haar or the 2/10 transform. A dual transform engine is used, the first and engine being used for the first part of the first-level transform, the second part of the first-level transform and the subsequent-level transforms being performed by the second transform engine within a time interval which is less than or equal to the time taken by the first transform engine to effect the part-transform. Each bit plane of the resulting coefficients is then encoded by forming a tree structure from the bits and OR logical combinations thereof. Redundant data are removed from the resulting tree structure, and further data can be removed by using a predetermined compression profile. The resulting blocks of compressed data are of variable length and are packaged with sync words and index words for transmission so that the location and identity of the transformed data blocks can be determined from the received signal.
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公开(公告)号：US09924184B2
公开(公告)日：2018-03-20
申请号：US12217037
申请日：2008-06-30
摘要： Error detecting and protection innovations for video decoders are described. For example, in a multithreaded video decoder, a picture extent discovery (PED) task detects an error in a video bitstream which corrupts a picture. The PED task then determines any PED sub-stage which have been completed for the picture, and based on this determination, performs error-handing PED operations. In another example, an entropy decoding (ED) task checks validity on a macroblock-by-macroblock basis using a redundant buffer to avoid overflows. Additionally, error recovery innovations are described which facilitate playback of a video bit stream at an arbitrary position. For example, a video decoder chooses a picture in the bit stream after the arbitrary position at which to begin decoding based on a determination of acceptable recovery time and/or acceptable picture quality.
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