公开(公告)号：US10416949B2

公开(公告)日：2019-09-17

申请号：US14863853

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Mina Ayman Saleh Yanni Makar ,  Hongyu Jiang ,  Xiaodong Wang ,  Vijayalakshmi Raveendran

IPC: G06T15/00 ,  G06F3/14 ,  G06T1/20

Abstract: Various aspects of the present disclosure provide for detecting a condition indicating that a graphics processing unit (GPU) is in an unstable state while receiving GPU commands in a first wireless display mode, transmitting a GPU refresh request message and switching from the first wireless display mode to a second wireless display mode in response to detecting the condition, receiving data sufficient to reset the GPU from the unstable state to a stable state at a random access point (RAP) in a trace of the GPU commands, and switching from the second wireless display mode to the first wireless display mode after receiving the data. The GPU refresh request message may include information requesting the data sufficient to reset the GPU at an upcoming RAP in the trace of the GPU commands. Various other aspects are also provided throughout the present disclosure.

公开(公告)号：US09911175B2

公开(公告)日：2018-03-06

申请号：US14845082

申请日：2015-09-03

Applicant: QUALCOMM Incorporated

Inventor： Mina Ayman Saleh Yanni Makar ,  Vijayalakshmi Rajasundaram Raveendran ,  Xiaodong Wang ,  Hongyu Jiang

IPC: G06T1/20 ,  H04N5/44 ,  H04N13/04 ,  G06F3/14 ,  G06T19/20

CPC classification number: G06T1/20 ,  G06F3/1454 ,  G06T19/20 ,  H04N5/4401 ,  H04N13/398

Abstract: In one example, a method for processing video data includes receiving, by a sink device and from a source device, one or more graphical command tokens that are executable to render original video data; modifying, by the sink device, the graphical command tokens to generate modified graphical command tokens that are executable to render modified video data different from the original video data; and outputting, for presentation at a display operatively connected to the sink device, the modified video data.

公开(公告)号：US20170090846A1

公开(公告)日：2017-03-30

申请号：US14863853

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Mina Ayman Saleh Yanni Makar ,  Hongyu Jiang ,  Xiaodong Wang ,  Vijayalakshmi Raveendran

IPC: G06F3/14 ,  G06T1/20

CPC classification number: G06F3/1431 ,  G06F3/1454 ,  G06T1/20 ,  G09G2370/16

Abstract: Various aspects of the present disclosure provide for detecting a condition indicating that a graphics processing unit (GPU) is in an unstable state while receiving GPU commands in a first wireless display mode, transmitting a GPU refresh request message and switching from the first wireless display mode to a second wireless display mode in response to detecting the condition, receiving data sufficient to reset the GPU from the unstable state to a stable state at a random access point (RAP) in a trace of the GPU commands, and switching from the second wireless display mode to the first wireless display mode after receiving the data. The GPU refresh request message may include information requesting the data sufficient to reset the GPU at an upcoming RAP in the trace of the GPU commands. Various other aspects are also provided throughout the present disclosure.

公开(公告)号：US09491505B2

公开(公告)日：2016-11-08

申请号：US13633328

申请日：2012-10-02

Applicant: QUALCOMM Incorporated

Inventor： Xiaodong Wang ,  Fawad Shaukat ,  Vijayalakshmi R. Raveendran

IPC: G09G5/00 ,  H04N21/44 ,  G06F3/038 ,  H04N21/43 ,  H04N21/4363

CPC classification number: H04N21/44004 ,  G06F3/038 ,  G09G2370/16 ,  H04N21/4307 ,  H04N21/43637

Abstract: This disclosure describes techniques to improve a user experience in a Wireless Display (WD) system. The WD system includes a source device that provides media data to one or more sink devices. The techniques are directed toward reducing end-to-end latency in the WD system while improving video playback quality at the sink devices. More specifically, the techniques include low latency screen capture and buffering at the source device. For example, a processing pipeline of the source device may be configured to include minimum-size buffers between processing steps to reduce latency. The techniques include buffering a most recent frame update captured from the media data in the minimum-size buffers and dropping older frame updates when the minimum-size buffers are full. In addition, the processing pipeline may be configured to use hardware acceleration to retrieve the frame updates from the buffers for processing.

Abstract translation: 本公开描述了在无线显示（WD）系统中改善用户体验的技术。 WD系统包括向一个或多个宿设备提供媒体数据的源设备。 这些技术旨在减少WD系统中的端到端延迟，同时提高信宿设备的视频播放质量。 更具体地，这些技术包括在源设备处的低延迟屏幕捕获和缓冲。 例如，源设备的处理流水线可以被配置为在处理步骤之间包括最小大小的缓冲器以减少等待时间。 这些技术包括缓冲从最小尺寸缓冲器中的媒体数据捕获的最新帧更新，并在最小大小缓冲区已满时丢弃较旧的帧更新。 此外，处理管线可以被配置为使用硬件加速来从缓冲器检索帧更新以进行处理。

公开(公告)号：US20160301620A1

公开(公告)日：2016-10-13

申请号：US14682028

申请日：2015-04-08

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Xiaodong Wang ,  Vijayalakshmi Rajasundaram Raveendran

IPC: H04L12/875 ,  H04L12/26

CPC classification number: H04L47/56 ,  H04L43/0876 ,  H04W72/0446 ,  H04W72/0486 ,  H04W74/04

Abstract: The disclosure provides methods, apparatus, and computer-readable medium for setting parameters pertaining to service period (SP) for reduced latency in wireless communication. The apparatus may determine whether an amount of data at a medium access control (MAC) layer at the apparatus exceeds a maximum amount of data transmittable in a single transmission opportunity (TXOP). If so, the apparatus sets a duration of the SP for transmission of the data to be greater than or equal to a duration required for transmitting the data, and the apparatus transmits the data during the set duration of the SP. The apparatus may also set a duration of a service period interval (SPI) to be greater than or equal to the duration of the SP and less than or equal to a duration for transmitting the data using the single TXOP. The data may be latency-sensitive data, such as isochronous data or interrupt data.

Abstract translation: 本公开提供了用于设置与服务周期（SP）有关的参数的方法，装置和计算机可读介质，用于减少无线通信中的等待时间。 设备可以确定设备处的介质访问控制（MAC）层的数据量是否超过在单个传输机会（TXOP）中可发送的最大数据量。 如果是这样，则设备将用于传输数据的SP的持续时间设置为大于或等于发送数据所需的持续时间，并且设备在SP的设置持续时间期间发送数据。 该设备还可以将服务周期间隔（SPI）的持续时间设置为大于或等于SP的持续时间，并且小于或等于使用单个TXOP发送数据的持续时间。 这些数据可能是延迟敏感数据，如同步数据或中断数据。

公开(公告)号：US09152527B2

公开(公告)日：2015-10-06

申请号：US13757813

申请日：2013-02-03

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Xiaodong Wang ,  Vijayalakshmi R. Raveendran

IPC: G06F3/00 ,  G06F11/30 ,  G06F1/16

CPC classification number: G06F11/3089 ,  G06F1/1632

Abstract: Various aspects of the present disclosure enable a docking host that manages a docking environment to establish an initial connection between the docking host and one or more wireless peripheral devices to perform functionality determination of the wireless peripherals devices. The docking host may store the results of the functionality and, upon receiving a request from a dockee to access the functionality that the docking host may provide, will update the results. In one aspect of the disclosed approach, the docking host may determine the current state of the wireless peripheral devices before advertising any functionality information to the dockee. Other aspects, embodiments, and features are also claimed and described.

Abstract translation: 本公开的各个方面使得能够管理对接环境的对接主机在对接主机和一个或多个无线外围设备之间建立初始连接，以执行无线外围设备的功能确定。 对接主机可以存储功能的结果，并且在接收到来自对接主机的访问对接主机可能提供的功能的请求时，将更新结果。 在所公开的方法的一个方面，对接主机可以在将任何功能信息广告给对方的人之前确定无线外围设备的当前状态。 还要求和描述其它方面，实施例和特征。

公开(公告)号：US08914187B2

公开(公告)日：2014-12-16

申请号：US13666121

申请日：2012-11-01

Applicant: QUALCOMM Incorporated

Inventor： Xiaodong Wang ,  Vijayalakshmi R. Raveendran ,  Xiaolong Huang ,  Jeff S. Froelicher

IPC: H04W4/04

CPC classification number: H04L67/12 ,  B60K35/00 ,  B60K37/06 ,  B60K2350/357 ,  H04L65/4092 ,  H04L67/38 ,  H04L69/22 ,  H04M1/72527

Abstract: A wireless source and an automobile dashboard configured to function as a wireless sink device are configured to communicate with one another including authenticating the source device for communications with the dashboard sink, transmitting user inputs received at the dashboard sink back to the wireless source device to enable a user to control the source device and interact with and control the content that is being transmitted from the source device to the dashboard sink, controlling the operational state of the source device based on the operational state of the automobile in which the dashboard sink is arranged, and transmitting data generated by the automobile from the dashboard sink to the source device so as to enable the source device to process at least some of the data.

Abstract translation: 配置为用作无线接收设备的无线源和汽车仪表板被配置为彼此通信，包括认证用于与仪表板接收器通信的源设备，将在仪表板接收器处接收的用户输入传送回无线源设备以使能 用户控制源设备并与从源设备传输到仪表板接收器的内容进行交互并控制，基于其中布置仪表板的汽车的操作状态来控制源设备的操作状态 ，以及将由汽车产生的数据从仪表板接收器发送到源设备，以使源设备能够处理至少一些数据。

公开(公告)号：US08832328B2

公开(公告)日：2014-09-09

申请号：US13709823

申请日：2012-12-10

Applicant: QUALCOMM Incorporated

Inventor： Vijayalakshmi R. Raveendran ,  Xiaodong Wang ,  Xiaolong Huang ,  Jeffree S. Froelicher

IPC: G06F3/00 ,  G06F13/00 ,  G06F9/44 ,  G06F13/40

CPC classification number: G06F9/4411 ,  G06F13/4022 ,  G06F2213/4002 ,  Y02D10/14 ,  Y02D10/151

Abstract: Aspects of this disclosure relate to data transfer. In an example, aspects of this disclosure include a method that includes generating, at a host device, a Universal Serial Bus (USB) redirect configuration request for establishing a connection between a first USB device connected to a USB hub and a second USB device connected to the USB hub, wherein the connection between the first USB device and the second USB device does not include the host device. The method also includes requesting, after the connection between the first USB device and the second USB device has been established, data to be routed from the first USB device to the second USB device via the USB hub.

Abstract translation: 本公开的方面涉及数据传输。 在一个示例中，本公开的方面包括一种方法，其包括在主机设备处生成用于建立连接到USB集线器的第一USB设备与连接的第二USB设备之间的连接的通用串行总线（USB）重定向配置请求 到USB集线器，其中第一USB设备和第二USB设备之间的连接不包括主机设备。 该方法还包括在第一USB设备和第二USB设备之间的连接已建立之后请求经由USB集线器从第一USB设备路由到第二USB设备的数据。

公开(公告)号：US10382494B2

公开(公告)日：2019-08-13

申请号：US15726452

申请日：2017-10-06

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Vijayalakshmi R Raveendran ,  Xiaodong Wang ,  Fawad Shaukat

IPC: H04L12/28 ,  H04L29/06 ,  H04W99/00

Abstract: As part of a communication session, a wireless source device can transmit audio and video data to a wireless sink device, and the wireless sink device can transmit user input data received at the wireless sink device back to the wireless source device. In this manner, a user of the wireless sink device can control the wireless source device and control the content that is being transmitted from the wireless source device to the wireless sink device. The user input data transmitted by the wireless sink device can be input data obtained at a third party device and forwarded to the wireless source device.

公开(公告)号：US10255021B2

公开(公告)日：2019-04-09

申请号：US14958336

申请日：2015-12-03

Applicant: QUALCOMM Incorporated

Inventor： Mina Ayman Saleh Yanni Makar ,  Xiaodong Wang ,  Hongyu Jiang ,  Na Yu ,  Vijayalakshmi Raveendran

IPC: G06T1/20 ,  G06F3/14 ,  G09G5/00 ,  G09G5/12 ,  G06F9/451 ,  H04L29/06

Abstract: Aspects of the present disclosure relate to graphics domain transmission methods that utilize an adaptive compression pipeline to achieve low latency screen mirroring between a source device and a sink device. A source device captures a plurality of graphics domain frames, each of the graphics domain frames including one or more graphics command tokens. The source device utilizes an adaptive compression pipeline to compress the graphics domain frames based on one or more characteristics of the frames, and the adaptive compression pipeline is configured to perform at least one of scalable texture streaming, frame-based prediction, frame dropping, or data compression. The source device transmits the compressed frames to a sink device, and displays a rendered image of the graphics domain frames in time synchronization with a corresponding rendered image of the compressed frames displayed at the sink device.