公开(公告)号：US20200296420A1

公开(公告)日：2020-09-17

申请号：US16814654

申请日：2020-03-10

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Muhammed Zeyd Coban ,  Hongtao Wang

IPC: H04N19/61 ,  H04N19/70 ,  H04N19/176

Abstract: A device for decoding video data determines, for a residual block of video data encoded using a transform skip mode, a value for a first neighboring coefficient of a coefficient currently being decoded; determines a value for a second neighboring coefficient of the coefficient currently being decoded; determines a context offset for the coefficient currently being decoded based on the value for the first neighboring coefficient and the value for the second neighboring coefficient; and decodes a value for the coefficient currently being decoded based on the determined context offset.

公开(公告)号：US20200296381A1

公开(公告)日：2020-09-17

申请号：US16816116

申请日：2020-03-11

Applicant: QUALCOMM Incorporated

Inventor： Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/70 ,  H04N19/159 ,  H04N19/176

Abstract: A video decoder may determine, based on syntax elements in a bitstream that comprises an encoded representation of the video data, residual quantized samples of a block of the video data. Additionally, the video decoder may determine quantized residual values based on the residual quantized samples. After determining the quantized residual values, the video decoder may inverse quantize the quantized residual values. The video decoder may generate predicted values by performing intra prediction for the block using unfiltered samples from above or left block boundary samples. Furthermore, the video decoder may reconstruct original sample values of the block based on the inverse-quantized quantized residual values and the prediction values.

公开(公告)号：US20200288159A1

公开(公告)日：2020-09-10

申请号：US16810680

申请日：2020-03-05

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Bappaditya Ray ,  Adarsh Krishnan Ramasubramonian ,  Muhammed Zeyd Coban ,  Luong Pham Van ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159

Abstract: A video decoder may apply a first inverse residual modification function to first decoded modified chroma residual data to generate first inverse modified chroma residual data. Additionally, the video decoder may apply a second inverse residual modification function to second decoded modified chroma residual data to generate second inverse modified chroma residual data. The first decoded modified chroma residual data is associated with a first chroma component and the second decoded modified chroma residual data is associated with a second chroma component. The video decoder may reconstruct a block of video data based on the first inverse modified chroma residual data and the second inverse modified chroma residual data.

公开(公告)号：US10764605B2

公开(公告)日：2020-09-01

申请号：US16271065

申请日：2019-02-08

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Geert Van der Auwera ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N19/597 ,  H04N19/593 ,  H04N19/176 ,  H04N19/105 ,  H04N5/232 ,  H04N19/11

Abstract: A video coder may determine reference samples based on a location of a current block of a current picture of the 360-degree video data and a packing arrangement that defines an arrangement of a plurality of regions in the current picture. The current picture is in a projected domain and each respective region of the plurality of regions is a respective face defined by a projection of 360-degree video data. The regions are arranged in the current picture according to the packing arrangement. Based on the location of the current block being at a border of the first region that is adjacent to the second region and there being a discontinuity at the border due to the packing arrangement, the reference samples are samples of the current picture that spatially neighbor the current block in a spherical domain and not in the projected domain.

公开(公告)号：US20200267412A1

公开(公告)日：2020-08-20

申请号：US16560918

申请日：2019-09-04

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Muhammed Zeyd Coban ,  Jie Dong

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/13

Abstract: A video decoder can be configured to determine a size of a transform unit, wherein the transform unit comprises N coefficient groups and each coefficient group comprises M coefficients, wherein M and N are integer values; determine a regular bin count threshold for the transform unit based on the size of the transform unit; context decode syntax elements for the transform unit until the first number of regular coded bins is reached; in response to reaching the first number of regular coded bins, bypass decode additional syntax elements of the transform unit; determine values for a first set of coefficients of the transform unit based on the context decoded syntax elements; and determine values for a second set of coefficients of the transform unit based on the additional syntax elements.

公开(公告)号：US10721465B2

公开(公告)日：2020-07-21

申请号：US16274889

申请日：2019-02-13

Applicant: QUALCOMM Incorporated

Inventor： Muhammed Zeyd Coban ,  Geert Van der Auwera ,  Fnu Hendry ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/513 ,  H04N19/563 ,  H04N19/176 ,  H04N19/159 ,  H04N19/46 ,  H04N19/70 ,  H04N19/597

Abstract: A device for decoding 360-degree video data is configured to store a decoded picture of 360-degree video as a reference frame; derive an extended reference frame from the stored reference frame based on a padding amount by extending a first cube face in the reference frame; inter-predict a block of a current picture from a block of the extended reference frame by determining a motion vector for the block of the current picture; in response to a determination that the motion vector points to a cube face in the extended reference frame other than the first cube face, clipping the motion vector such that the motion vector points to a location in the first cube face; and locating a prediction block for a current block using the clipped motion vector.

公开(公告)号：US20200186814A1

公开(公告)日：2020-06-11

申请号：US16704995

申请日：2019-12-05

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Muhammed Zeyd Coban

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/46 ,  H04N19/13 ,  H04N19/176 ,  G06F17/18

Abstract: A video coder may be configured to determine a value for a zero parameter based on the Rice parameter, wherein the value for the zero parameter identifies a coded value that corresponds to a coefficient level of zero; receive a first coded value for a first coefficient of the second set of coefficients; and based on the value for the zero parameter and the first coded value for the first coefficient, determine a level for the first coefficient.

公开(公告)号：US20200007873A1

公开(公告)日：2020-01-02

申请号：US16459164

申请日：2019-07-01

Applicant: QUALCOMM Incorporated

Inventor： Muhammed Zeyd Coban ,  Jie Dong ,  Marta Karczewicz

IPC: H04N19/18 ,  H04N19/126 ,  H04N19/176 ,  H04N19/463 ,  H04N19/103 ,  H04N19/96

Abstract: The disclosure describes example techniques for determining a context used for encoding or decoding flags used to indicate a value of a coefficient. The techniques also relate to determining a quantization or dequantization factor to use for the coefficient. For determining the context and the quantization or dequantization factor, a video coder may determine values of flags used for encoding or decoding a previous coefficient and use the determined values of the flags for determining the context and the quantization or dequantization factor for the current coefficient.

公开(公告)号：US09438853B2

公开(公告)日：2016-09-06

申请号：US14811569

申请日：2015-07-28

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Muhammed Zeyd Coban ,  Marta Karczewicz ,  Nikolai Konrad Leung

IPC: H04N7/14 ,  H04N19/40 ,  H04N19/61 ,  H04N7/15 ,  H04N21/2365 ,  H04N21/2662 ,  H04N21/434 ,  H04L12/26 ,  H04L12/853 ,  H04L12/825 ,  H04L12/841 ,  H04L12/801

CPC classification number: H04N7/147 ,  H04L43/0852 ,  H04L43/0864 ,  H04L43/0894 ,  H04L43/106 ,  H04L43/16 ,  H04L47/12 ,  H04L47/2416 ,  H04L47/263 ,  H04L47/283 ,  H04N7/148 ,  H04N7/15 ,  H04N7/152 ,  H04N19/40 ,  H04N19/61 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/2662 ,  H04N21/4347 ,  Y02D50/10

Abstract: In an example, a method of processing data includes determining, by a receiver device, an allowable excess delay parameter based on a difference between a time at which received data is received by the receiver device and a time at which the received data is scheduled to be played out, where the allowable excess delay parameter indicates an amount of delay that is supportable by a channel between a sender device and the receiver device. The method also includes determining, by the receiver device, a sender bit rate increase for increasing a bit rate at which data is to be sent from the sender device to the receiver device based on the determined allowable excess delay parameter, and transmitting an indication of the sender bit rate increase to the sender device.

Abstract translation: 在一个示例中，处理数据的方法包括：基于接收机设备接收到的数据的时间与所接收的数据被调度的时间之间的差异，由接收机设备确定允许的超时延迟参数 播放，其中允许的超额延迟参数指示可由发送器设备和接收器设备之间的通道支持的延迟量。 该方法还包括由接收机设备确定发送器比特率增加，用于基于所确定的允许超额延迟参数来增加要从发送方设备向接收方设备发送数据的比特率，并发送 发送方比特率增加到发送方设备。

公开(公告)号：US09426418B2

公开(公告)日：2016-08-23

申请号：US14811491

申请日：2015-07-28

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Muhammed Zeyd Coban ,  Marta Karczewicz ,  Nikolai Konrad Leung

IPC: H04N7/14 ,  H04N19/40 ,  H04N19/61 ,  H04N7/15 ,  H04N21/2365 ,  H04N21/2662 ,  H04N21/434 ,  H04L12/26 ,  H04L12/853 ,  H04L12/825 ,  H04L12/841 ,  H04L12/801

CPC classification number: H04N7/147 ,  H04L43/0852 ,  H04L43/0864 ,  H04L43/0894 ,  H04L43/106 ,  H04L43/16 ,  H04L47/12 ,  H04L47/2416 ,  H04L47/263 ,  H04L47/283 ,  H04N7/148 ,  H04N7/15 ,  H04N7/152 ,  H04N19/40 ,  H04N19/61 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/2662 ,  H04N21/4347 ,  Y02D50/10

Abstract: In an example, a method of processing data includes transmitting data over a network at a first bit rate, identifying a reduction in a network link rate of the network from a first network link rate to a second network link rate, and in response to identifying the reduction in the network link rate, determining a recovery bit rate at which to transmit the data over the network, where the recovery bit rate is less than the second network link rate. The method also includes determining a buffering duration based on a difference between a time of the identification of the reduction in the network link rate and an estimated actual time of the reduction in the network link rate, and determining a recovery rate duration during which to transmit the data at the recovery bit rate based on the recovery bit rate and the buffering duration.

Abstract translation: 在一个示例中，处理数据的方法包括以第一比特率通过网络发送数据，识别网络的网络链路速率从第一网络链路速率降低到第二网络链路速率，以及响应于识别 网络链路速率的降低，确定通过网络发送数据的恢复比特率，恢复比特率小于第二网络链路速率。 该方法还包括基于网络链路速率降低的识别时间与网络链路速率降低的估计实际时间之间的差异来确定缓冲持续时间，以及确定在其中发送的恢复速率持续时间 基于恢复比特率和缓冲持续时间的恢复比特率的数据。