公开(公告)号：US09800822B2

公开(公告)日：2017-10-24

申请号：US13947852

申请日：2013-07-22

Applicant: QUALCOMM Incorporated

Inventor： Soham V. Sheth ,  Samir Salib Soliman ,  Vijayalakshmi R. Raveendran

IPC: H04N19/40 ,  H04N5/775 ,  H04L29/06 ,  H04N21/2662 ,  H04N21/2343 ,  H04N21/258 ,  H04N21/4402

CPC classification number: H04N5/775 ,  H04L65/607 ,  H04N19/40 ,  H04N21/2343 ,  H04N21/234309 ,  H04N21/25825 ,  H04N21/25833 ,  H04N21/25858 ,  H04N21/2662 ,  H04N21/4402 ,  H04N21/440218

Abstract: This disclosure relates to techniques for resource utilization in a source device when transmitting video data in a Wireless Display (WD) system. A method for wireless display of compressed content may comprise determining, by a source device, a decoding capability of a sink device, receiving, by the source device, a request to display compressed content at the sink device in a wireless display session, and in the case that the decoding capability of the sink device allows for decoding of the compressed content, transmitting the compressed content from the source device to the sink device, whereby transcoding the compressed content is avoided in the source device.

公开(公告)号：US09201826B2

公开(公告)日：2015-12-01

申请号：US13688499

申请日：2012-11-29

Applicant: QUALCOMM Incorporated

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

IPC: H04J3/08 ,  G06F13/42 ,  G06F13/38 ,  G06F13/40 ,  H04W4/00

CPC classification number: G06F13/385 ,  G06F13/4022 ,  G06F2213/0042 ,  H04W4/00

Abstract: An extensible hub is disclosed for providing multi-hop wireless communication among universal serial bus (USB) devices, for example, utilizing a WiGig Serial Extension (WSE) air interface. The extensible hub may include a device protocol adaptation layer (PAL), as well as a host PAL, and further a bridge for providing a data flow path between the device and host PALs. The bridge may be configured to distinguish between request messages and response messages in accordance with a header on those messages. Further, the extensible hub may include virtual ports and may map device handles and endpoint handles to provide for routing of messages to the correct downstream devices in a multi-hop network tree.

Abstract translation: 公开了一种可扩展集线器，用于在通用串行总线（USB）设备之间提供多跳无线通信，例如利用WiGig串行扩展（WSE）空中接口。 可扩展集线器可以包括设备协议适配层（PAL）以及主机PAL，以及用于在设备和主机PAL之间提供数据流路径的桥接器。 桥可以被配置为根据这些消息上的报头来区分请求消息和响应消息。 此外，可扩展集线器可以包括虚拟端口，并且可以映射设备句柄和端点句柄以提供消息到多跳网络树中的正确下游设备的路由。

公开(公告)号：US20130222210A1

公开(公告)日：2013-08-29

申请号：US13633328

申请日：2012-10-02

Applicant: QUALCOMM Incorporated

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

IPC: G09G5/00

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：US20130188742A1

公开(公告)日：2013-07-25

申请号：US13760991

申请日：2013-02-06

Applicant: QUALCOMM Incorporated

Inventor： Vijayalakshmi R. Raveendran ,  Fang Shi ,  Gordon Kent Walker

IPC: H04N7/26

CPC classification number: H04N19/85 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/14 ,  H04N19/142 ,  H04N19/15 ,  H04N19/172 ,  H04N19/176 ,  H04N19/194 ,  H04N19/46 ,  H04N19/583 ,  H04N19/587 ,  H04N19/61

Abstract: An Encoder Assisted Frame Rate Up Conversion (EA-FRUC) system that utilizes video coding and pre-processing operations at the video encoder to exploit the FRUC processing that will occur in the decoder in order to improve compression efficiency and reconstructed video quality is disclosed. One operation of the EA-FRUC system involves determining whether to encode a frame in a sequence of frames of a video content by determining a spatial activity in a frame of the sequence of frames; determining a temporal activity in the frame; determining a spatio-temporal activity in the frame based on the determined spatial activity and the determined temporal activity; determining a level of a redundancy in the source frame based on at least one of the determined spatial activity, the determined temporal activity, and the determined spatio-temporal activity; and, encoding the non-redundant information in the frame if the determined redundancy is within predetermined thresholds.

Abstract translation: 公开了一种利用视频编码器上的视频编码和预处理操作来利用解码器中将出现的FRUC处理以提高压缩效率和重构的视频质量的编码器辅助帧速率上变换（EA-FRUC）系统。 EA-FRUC系统的一个操作涉及通过确定帧序列的帧中的空间活动来确定是否对视频内容的帧序列进行编码; 确定帧中的时间活动; 基于所确定的空间活动和所确定的时间活动来确定所述帧中的时空活动; 基于所确定的空间活动，所确定的时间活动和确定的时空活动中的至少一个来确定源帧中的冗余的水平; 以及如果所确定的冗余在预定阈值内，则对帧中的非冗余信息进行编码。

公开(公告)号：US09723359B2

公开(公告)日：2017-08-01

申请号：US15293885

申请日：2016-10-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/18 ,  H04N21/4363 ,  H04N21/23 ,  H04N21/258 ,  H04N21/41 ,  H04N21/84 ,  G06F3/14 ,  H04N21/435 ,  H04W84/12

CPC classification number: H04N21/43637 ,  G06F3/1454 ,  G09G2340/0407 ,  G09G2350/00 ,  G09G2352/00 ,  G09G2370/04 ,  G09G2370/16 ,  H04N21/23 ,  H04N21/25825 ,  H04N21/4126 ,  H04N21/435 ,  H04N21/84 ,  H04W84/12

Abstract: As part of a communication session, a wireless source device can transmit video component data and metadata to a wireless sink device. The wireless source device can intercept the video component data prior to the video component data being rendered by the wireless source device, and the wireless sink device can generate a frame of video data based on the video component data and the metadata.

公开(公告)号：US09544048B2

公开(公告)日：2017-01-10

申请号：US13760993

申请日：2013-02-06

Applicant: QUALCOMM Incorporated

Inventor： Vijayalakshmi R. Raveendran ,  Xiaolong Huang

IPC: H04B7/00 ,  H04M1/00 ,  H04B7/26 ,  G06F13/40 ,  G06F1/16 ,  H04M1/723 ,  H04M1/725

CPC classification number: H04B7/26 ,  G06F1/1632 ,  G06F13/00 ,  G06F13/4068 ,  H04M1/723 ,  H04M1/7253

Abstract: Various aspects of the present disclosure enable a persistent docking procedure that, once a persistent docking environment has been established, can simplify the future establishment of a docking environment between the dockee and docking host. Other aspects, embodiments, and features are also claimed and described.

Abstract translation: 本公开的各个方面能够实现持久对接过程，一旦建立了持续对接环境，就可以简化在对接主机和对接主机之间的对接环境的未来建立。 还要求和描述其它方面，实施例和特征。

公开(公告)号：US08996762B2

公开(公告)日：2015-03-31

申请号：US13633530

申请日：2012-10-02

Applicant: QUALCOMM Incorporated

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

IPC: G06F19/00 ,  H04W28/18 ,  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 customized buffering at the sink devices based on application awareness for the media data. The techniques include learning the type of application for the media data, and adjusting the size of buffers in the processing pipeline to achieve an appropriate balance between smoothness and latency for the application type. For example, when the media data is for a video playback application, the techniques include increasing the buffer size to increase smoothness in the video playback application.

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。 更具体地说，这些技术包括基于媒体数据的应用意识在宿设备处的定制缓冲。 这些技术包括学习媒体数据的应用类型，以及调整处理流水线中缓冲区的大小，以实现应用类型的平滑性和延迟之间的适当平衡。 例如，当媒体数据用于视频播放应用时，这些技术包括增加缓冲器大小以增加视频播放应用中的平滑度。

公开(公告)号：US08966131B2

公开(公告)日：2015-02-24

申请号：US13678988

申请日：2012-11-16

Applicant: QUALCOMM Incorporated

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

IPC: G06F3/038 ,  G06F13/10

CPC classification number: G06F13/10 ,  H04L65/4092 ,  H04L65/608 ,  H04N21/42207 ,  H04N21/43615

Abstract: This disclosure describes a method of establishing a bi-directional user interface back channel (UIBC) to a computing device, receiving encapsulated peripheral data from the computing device using the UIBC, and decapsulating the peripheral data, as well as a method of establishing a bi-directional user interface back channel (UIBC) to a computing device, receiving peripheral data, encapsulating the peripheral data, and transmitting the encapsulated peripheral data to the computing device using the UIBC.

Abstract translation: 本公开描述了一种向计算设备建立双向用户界面返回信道（UIBC）的方法，使用UIBC从计算设备接收封装的外围数据，并对外围数据进行解封装，以及建立双向 双向用户界面返回信道（UIBC）到计算设备，接收外围数据，封装外围数据，以及使用UIBC将封装的外围数据传输到计算设备。

公开(公告)号：US20150023648A1

公开(公告)日：2015-01-22

申请号：US13947852

申请日：2013-07-22

Applicant: QUALCOMM Incorporated

Inventor： Soham V. Sheth ,  Samir Salib Soliman ,  Vijayalakshmi R. Raveendran

IPC: H04N5/775 ,  H04L29/06

CPC classification number: H04N5/775 ,  H04L65/607 ,  H04N19/40 ,  H04N21/2343 ,  H04N21/234309 ,  H04N21/25825 ,  H04N21/25833 ,  H04N21/25858 ,  H04N21/2662 ,  H04N21/4402 ,  H04N21/440218

Abstract: This disclosure relates to techniques for resource utilization in a source device when transmitting video data in a Wireless Display (WD) system. A method for wireless display of compressed content may comprise determining, by a source device, a decoding capability of a sink device, receiving, by the source device, a request to display compressed content at the sink device in a wireless display session, and in the case that the decoding capability of the sink device allows for decoding of the compressed content, transmitting the compressed content from the source device to the sink device, whereby transcoding the compressed content is avoided in the source device.

Abstract translation: 本公开涉及在无线显示（WD）系统中传输视频数据时在源设备中资源利用的技术。 用于无线显示压缩内容的方法可以包括由源设备确定宿设备的解码能力，由源设备接收在无线显示会话中在宿设备处显示压缩内容的请求，以及 宿设备的解码能力允许对压缩内容进行解码，将压缩内容从源设备传送到宿设备的情况，从而在源设备中避免对压缩内容进行代码转换。

公开(公告)号：US08929297B2

公开(公告)日：2015-01-06

申请号：US13785314

申请日：2013-03-05

Applicant: QUALCOMM Incorporated

Inventor： Vijayalakshmi R. Raveendran

IPC: H04W4/00 ,  H04L1/00 ,  H04L12/801 ,  H04L12/813 ,  H04L12/811 ,  H04L12/861 ,  H04L12/879 ,  H04L29/06 ,  H04W28/06

CPC classification number: H04W4/00 ,  H04L1/0065 ,  H04L1/0067 ,  H04L1/007 ,  H04L47/14 ,  H04L47/20 ,  H04L47/38 ,  H04L49/90 ,  H04L49/901 ,  H04L49/9047 ,  H04L65/605 ,  H04L69/08 ,  H04W28/06

Abstract: A method of transmitting content to a wireless display device is disclosed. The method may include receiving multimedia data, encoding the multimedia data, and writing encoded multimedia data into a first predetermined memory location of a shared memory. Further, the method may include encapsulating the encoded multimedia data and writing encapsulation data into a second predetermined memory location of the shared memory. The method may also include calculating error control encoding and writing the error control encoding into a third predetermined memory location of the shared memory. Further, the method may include transmitting the encoded multimedia data, the encapsulation data, and the error control encoding to the wireless display device.

Abstract translation: 公开了一种向无线显示设备发送内容的方法。 该方法可以包括接收多媒体数据，对多媒体数据进行编码，以及将编码的多媒体数据写入共享存储器的第一预定存储器位置。 此外，该方法可以包括封装编码的多媒体数据并将封装数据写入共享存储器的第二预定存储器位置。 该方法还可以包括计算错误控制编码和将错误控制编码写入共享存储器的第三预定存储器位置。 此外，该方法可以包括向无线显示设备发送编码的多媒体数据，封装数据和错误控制编码。