公开(公告)号：US11115693B2

公开(公告)日：2021-09-07

申请号：US16367090

申请日：2019-03-27

Applicant: Advanced Micro Devices, Inc.

Inventor： Stephen Mark Ryan ,  Carson Ryley Reece Green

IPC: H04N21/242 ,  H04N21/238 ,  H04N21/24 ,  H04H20/18

Abstract: Systems, apparatuses, and methods for performing efficient video transmission are disclosed. In a video processing system, a transmitter sends encoded pixel data to a receiver. The receiver stores the encoded pixel data in a buffer at an input data rate. A decoder of the receiver reads the pixel data from the buffer at an output data rate. Each of a transmitter and the receiver maintains a respective synchronization counter. When detecting a start of a frame, each of the transmitter and the receiver stores a respective frame start count as a copy of a current value of the respective synchronization counter. The transmitter sends its frame start count to the receiver. The receiver determines a difference between the respective frame start counts, and adjusts the decoding rate based on the difference.

公开(公告)号：US11539908B2

公开(公告)日：2022-12-27

申请号：US15721125

申请日：2017-09-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Ngoc Vinh Vu ,  Adam William Lynch ,  Darren Rae Di Cera ,  Stephen Mark Ryan

IPC: H04N5/40 ,  H04N19/36 ,  H04N19/187 ,  H04N19/66 ,  H04N19/30 ,  H04L1/00 ,  H04N19/29 ,  H04N19/67 ,  H04N21/426 ,  H04N5/46 ,  H04N1/00 ,  H04N21/63 ,  H04N7/24

Abstract: Systems, apparatuses, and methods for utilizing different modulation coding schemes (MCSs) for different components of a video stream are disclosed. A system includes a transmitter sending a video stream over a wireless link to a receiver. The transmitter splits the video stream into low, medium, and high quality components, and then the transmitter modulates the different components using different MCS's. For example, the transmitter modulates the low quality component using a lower, robust MCS level to increase the likelihood that this component is received. Also, the medium quality component is modulated using a medium MCS level and the high frequency component is modulated using a higher MCS level. If only the low quality component is received by the receiver, then the receiver reconstructs and displays a low quality video frame from this component, which avoids a glitch in the display of the video stream.

公开(公告)号：US20190068983A1

公开(公告)日：2019-02-28

申请号：US15686892

申请日：2017-08-25

Applicant: Advanced Micro Devices, Inc.

Inventor： Stephen Mark Ryan ,  Darren Rae Di Cera

IPC: H04N19/196 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/597 ,  H04N19/164

Abstract: Systems, apparatuses, and methods for sending hybrid frames as part of an encoded video stream are disclosed. A system includes a transmitter and a receiver communicating wirelessly. The transmitter partitions a first frame of a video stream into a plurality of portions and sends the plurality of portions to the receiver. The transmitter records which portions of the first frame which were not acknowledged by the receiver. Next, the transmitter generates one or more first portions of a hybrid frame based only on data from a second frame of the video stream and the transmitter generates one or more second portions of the hybrid frame based on a comparison of data from the second frame to data of the first frame. The one or more first portions of the hybrid frame correspond to portions of the first frame which were not acknowledged by the receiver.

公开(公告)号：US20200314469A1

公开(公告)日：2020-10-01

申请号：US16367090

申请日：2019-03-27

Applicant: Advanced Micro Devices, Inc.

Inventor： Stephen Mark Ryan ,  Carson Ryley Reece Green

IPC: H04N21/242 ,  H04N21/24 ,  H04N21/238

Abstract: Systems, apparatuses, and methods for performing efficient video transmission are disclosed. In a video processing system, a transmitter sends encoded pixel data to a receiver. The receiver stores the encoded pixel data in a buffer at an input data rate. A decoder of the receiver reads the pixel data from the buffer at an output data rate. Each of a transmitter and the receiver maintains a respective synchronization counter. When detecting a start of a frame, each of the transmitter and the receiver stores a respective frame start count as a copy of a current value of the respective synchronization counter. The transmitter sends its frame start count to the receiver. The receiver determines a difference between the respective frame start counts, and adjusts the decoding rate based on the difference.

公开(公告)号：US20190104276A1

公开(公告)日：2019-04-04

申请号：US15721125

申请日：2017-09-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Ngoc Vinh Vu ,  Adam William Lynch ,  Darren Rae Di Cera ,  Stephen Mark Ryan

IPC: H04N5/40 ,  H04N5/44 ,  H04N5/46

Abstract: Systems, apparatuses, and methods for utilizing different modulation coding schemes (MCSs) for different components of a video stream are disclosed. A system includes a transmitter sending a video stream over a wireless link to a receiver. The transmitter splits the video stream into low, medium, and high quality components, and then the transmitter modulates the different components using different MCS's. For example, the transmitter modulates the low quality component using a lower, robust MCS level to increase the likelihood that this component is received. Also, the medium quality component is modulated using a medium MCS level and the high frequency component is modulated using a higher MCS level. If only the low quality component is received by the receiver, then the receiver reconstructs and displays a low quality video frame from this component, which avoids a glitch in the display of the video stream.