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公开(公告)号：US11122263B2
公开(公告)日：2021-09-14
申请号：US16468845
申请日：2017-12-07
发明人： Per Wennersten , Kenneth Andersson , Jack Enhorn , Jacob Ström , Ying Wang
IPC分类号： H04N19/117 , H04N19/124 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/503 , H04N19/593 , H04N19/82 , H04N19/126 , H04N19/80
摘要： A pixel value of a pixel in a picture of a video sequence is modified by a weighted combination of the pixel value and at least one spatially neighboring pixel value in a filtering. The filtering depends on a pixel distance between the pixel and a neighboring pixel and on a pixel value difference between the pixel and a neighboring pixel value of the neighboring pixel. The filtering is controlled by a spatial parameter and a range parameter. The spatial parameter depends on at least one of a width and a height of a transform block, and on at least one of a prediction type of a block of pixels in the picture, a picture type of the picture, and a slice type of a slice in the picture.
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公开(公告)号：US10666796B2
公开(公告)日：2020-05-26
申请号：US16574398
申请日：2019-09-18
摘要： The present invention relates to a method and a network device for setting up a voice call. The invention further relates to computer programs and computer program products comprising computer readable medium having the computer programs stored thereon. In a first aspect of the invention a method of setting up a voice call between a first party and a second party is provided. The method comprises acquiring information pertaining to at least one detected state of at least one of the first and the second party, determining whether the acquired information pertaining to the at least one detected state of the at least one of the first and the second party satisfies at least one criterion of a scheduling policy for setting up the voice call; and if so causing the voice call to be set up between the first party and the second party.
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公开(公告)号：US10469659B2
公开(公告)日：2019-11-05
申请号：US15570419
申请日：2015-06-01
摘要： The present invention relates to a method and a network device for setting up a voice call. The invention further relates to computer programs and computer program products comprising computer readable medium having the computer programs stored thereon. In a first aspect of the invention a method of setting up a voice call between a first party and a second party is provided. The method comprises acquiring information pertaining to at least one detected state of at least one of the first and the second party, determining whether the acquired information pertaining to the at least one detected state of the at least one of the first and the second party satisfies at least one criterion of a scheduling policy for setting up the voice call; and if so causing the voice call to be set up between the first party and the second party.
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公开(公告)号：US20190306517A1
公开(公告)日：2019-10-03
申请号：US16429443
申请日：2019-06-03
IPC分类号： H04N19/186 , H04N19/182 , H04N19/86 , H04N19/85 , G09G5/02 , H04N19/132
摘要： A pixel pre-processing comprises subsampling a linear color in a first color space to obtain a subsampled linear color in the first color space. A first transfer function is applied to the subsampled linear color the first color space to obtain a subsampled non-linear color in the first color space. A first color transform is applied to the subsampled non-linear color in the first color space to obtain a subsampled first non-linear chroma component value and/or a subsampled second non-linear chroma component value in a second color space. A non-linear luma component value in the second color space is derived for the pixel, which together with the subsampled non-linear chroma component values represent a color the pixel. The pre-processing reduces chroma artifacts that may otherwise occur when chroma subsampling is performed following application of the first transfer function and the first color transform.
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公开(公告)号：US20190246123A1
公开(公告)日：2019-08-08
申请号：US16339117
申请日：2017-07-17
IPC分类号： H04N19/186 , H04N19/117 , H04N19/86 , H04N19/182
CPC分类号： H04N19/186 , H04N1/00 , H04N19/117 , H04N19/182 , H04N19/85 , H04N19/86
摘要： A processing for a first pixel in a picture comprises obtaining a lower limit of a first color component of the first pixel in a first color space based on a distance between a color of the first pixel and a first distorted version of the color in a second color space. An upper limit of the first color component in the first color 5 space is obtained based on a distance between the color and a second distorted version of the color in the second color space. A filtered value is obtained of the first color component and which is equal to or larger than the lower limit and equal to or lower than the upper limit. The processing results in filtered values that are cheaper to encode but that are visibly undistinguishable from the original colors of the pixels.
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公开(公告)号：US20190149323A1
公开(公告)日：2019-05-16
申请号：US16227633
申请日：2018-12-20
发明人： Matthew John Lawrenson , Lars Andersson , Till Burkert , Harm Stefan Cronie , Julian Charles Nolan , Jacob Ström
CPC分类号： H04L9/085 , H01M10/0525 , H01M10/482 , H04L9/0861 , H04L9/0866 , H04L9/14 , H04L9/30 , H04L9/3278
摘要： A communications device for generating a key for use as a shared secret in communications with another communications device. Each communications device comprises a sensor array for measuring a spatially-varying magnetic field originating from a first spatially-varying density of metallic particles comprised in a first battery, when subjected to an excitation magnetic field, and processing means operative to acquire a set of values from the sensor array, which set of values represents the spatially-varying magnetic field, and to derive the key from the set of values. The excitation magnetic field is generated by a magnetic-field generator comprised in one of the communications devices. Thereby, the two communications devices may, when in proximity, generate identical keys by probing the spatially-varying density of metallic particles comprised in the first battery.
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公开(公告)号：US10291907B2
公开(公告)日：2019-05-14
申请号：US15113268
申请日：2014-01-23
发明人： Michael Huber , Olof Ermis , Jacob Ström
IPC分类号： H04N13/351 , H04N13/302 , H04N13/366 , H04N21/431 , H04N21/442 , H04N13/376 , H04N13/156 , H04N13/373
摘要： A multi-view display device, including a controller that is operable to receive from a positioning device, position information representing positions of a left eye and a right eye of a viewer relative to the multi-view display. The viewer is able to activate a channel selection mode in which the multiview display simultaneously projects different stereoscopic channels on the side of his last position before starting the new mode, so he can see other channels by changing his head position. The viewer selects then a desired channel by which it ends the channel selection mode and switches the display to a mode where only one channel is stereoscopically displayed at a time.
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公开(公告)号：US20170134751A1
公开(公告)日：2017-05-11
申请号：US15415536
申请日：2017-01-25
发明人： Jacob Ström , Kenneth Andersson
IPC分类号： H04N19/60 , H04N19/547 , H04N19/176 , H04N19/13 , H04N19/139
CPC分类号： H04N19/60 , H03M7/4018 , H04N19/13 , H04N19/139 , H04N19/176 , H04N19/21 , H04N19/44 , H04N19/547 , H04N19/593 , H04N19/61 , H04N19/625 , H04N19/65 , H04N19/91
摘要： Video encoder and decoder and methods therein for transform skipped encoding and decoding of blocks of pixels. The methods comprise a modified use of an existing context model associated with transform coefficients, for deriving contexts for a bitmask indicating which residual values (i.e., not transform coefficients), in a transform skipped residual block, that are greater than one. The methods are applicable to video coding schemes such as HEVC.
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公开(公告)号：US11930205B2
公开(公告)日：2024-03-12
申请号：US17567372
申请日：2022-01-03
发明人： Du Liu , Rickard Sjöberg , Jacob Ström , Ruoyang Yu
IPC分类号： H04N19/513 , H04N19/577
CPC分类号： H04N19/513 , H04N19/577
摘要： A method for decoding a current block in a current picture of a video bitstream includes decoding, from the video bitstream, a first motion vector for the current block relative to a first reference block of a first reference picture having a first picture order count, and decoding, from the video bitstream, a second motion vector for the current block relative to a second reference block of a second reference picture having a second picture order count. A similarity metric is generated based on a comparison of the first motion vector and the second motion vector. The method further includes determining whether to refine the first motion vector based on the similarity metric, generating a first refined motion vector from the first motion vector, and performing motion compensation to derive a first reference block from the first reference picture using the first refined motion vector.
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公开(公告)号：US11924416B2
公开(公告)日：2024-03-05
申请号：US17620981
申请日：2020-06-24
发明人： Jacob Ström , Per Wennersten
IPC分类号： H04N19/117 , H04N19/119 , H04N19/169 , H04N19/463 , H04N19/82 , H04N19/85
CPC分类号： H04N19/117 , H04N19/119 , H04N19/1883 , H04N19/463 , H04N19/82 , H04N19/85
摘要： In an image processing device (i.e. encoder or decoder), the number of loop filter stages is lowered by combining bilateral loop filtering (or Hadamard loop filtering) with either sample Adaptive Offset Filtering (SAO) or Adaptive Loop Filtering (ALF). This avoids the implementation problems associated with too many loop filter stages and provides approximately the same compression efficiency gain as having separate loop filter stages.
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