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    Content provisioning for wireless back channel
    4.
    发明授权
    Content provisioning for wireless back channel 有权

    公开(公告)号：US10108386B2

    公开(公告)日：2018-10-23

    申请号：US13364576

    申请日：2012-02-02

    申请人： Vijayalakshmi R. Raveendran ,  Xiaodong Wang ,  Fawad Shaukat ,  Xiaolong Huang

    发明人： Vijayalakshmi R. Raveendran ,  Xiaodong Wang ,  Fawad Shaukat ,  Xiaolong Huang

    IPC分类号： G06F3/14

    摘要： In one example, this disclosure describes a method that includes, in an example, determining, by a source device, that display data rendered by the source device comprises one or more displayable graphical objects. The method also includes in response to determining an event, selecting, by the source device, a set of the one or more graphical objects for rendering at a sink device. The method also includes generating, by the source device, configuration data based at least in part on the set of the one or more graphical objects, wherein the configuration data is usable by the sink device to render representations of graphical objects in the set of one or more graphical objects based at least in part on one or more display parameters associated with the sink device. The method also includes sending, by the source device, the configuration data to the sink device.

    Discovery and networking of proximate wireless devices by acoustic messaging
    5.
    发明授权
    Discovery and networking of proximate wireless devices by acoustic messaging 有权

    公开(公告)号：US09918213B2

    公开(公告)日：2018-03-13

    申请号：US14341787

    申请日：2014-07-26

    申请人： Shangpin Chang ,  Xiaodong Wang ,  Steve X. Gu

    发明人： Shangpin Chang ,  Xiaodong Wang ,  Steve X. Gu

    IPC分类号： H04W4/00 ,  H04W8/00 ,  H04W72/04 ,  H04W56/00 ,  H04W4/02 ,  H04W84/12

    CPC分类号： H04W8/005 ,  H04W4/023 ,  H04W56/001 ,  H04W72/0453 ,  H04W84/12

    摘要： Apparatus and method are provided for discovery and networking of proximate devices using acoustic messaging. In one novel aspect, a peer discovery protocol is used to discover proximate devices using voting messages encoded in ultrasonic waveform. In one embodiment, the UE receives one or more voting messages from neighboring UEs encoded in ultrasonic waveform, builds its voting message and broadcasts the voting message encoded in ultrasonic waveform. In another embodiment, based on the voting result, a multi-tier wireless LAN is established by the master UEs through two RF interfaces. In another novel aspect, an optimized synchronization by the receiver is used to locate the transmitted frame boundary of the ultrasonic message. In one embodiment, the UE reversed-looks up a pre-calculated boundary-offset table to estimate the tone boundary and searches the maximum synchronization tone energy down to per sampling interval using a predefined search algorithm to optimize locating the tone boundary.

    Relaxation oscillator
    7.
    发明授权
    Relaxation oscillator 有权
    放松振荡器

    公开(公告)号：US09099994B2

    公开(公告)日：2015-08-04

    申请号：US13721885

    申请日：2012-12-20

    申请人： Axel Thomsen ,  Pavel Konecny ,  Xiaodong Wang

    发明人： Axel Thomsen ,  Pavel Konecny ,  Xiaodong Wang

    IPC分类号： H03K3/011 ,  H03K3/0231

    CPC分类号： H03K3/0231

    摘要： In an embodiment, a method includes: during a first portion of a cycle of a clock signal generated by an oscillator, pre-charging a first capacitor of a first switched capacitor stage until a first comparator determines that a first node voltage of the first switched capacitor stage is greater than a first reference voltage at a first reference voltage node; applying a second reference voltage to the first reference voltage node; and responsive to a first edge of the clock signal, charging the first capacitor until the first comparator determines that the first node voltage is greater than the second reference voltage at the first reference voltage node.

    摘要翻译： 在一个实施例中，一种方法包括：在由振荡器产生的时钟信号的周期的第一部分期间，对第一开关电容器级的第一电容器进行预充电，直到第一比较器确定第一开关的第一节点电压 电容器级大于第一参考电压节点处的第一参考电压; 将第二参考电压施加到所述第一参考电压节点; 并且响应于所述时钟信号的第一边缘，对所述第一电容器充电直到所述第一比较器确定所述第一节点电压大于所述第一参考电压节点处的所述第二参考电压。

    Method for feeding back channel state information, and method and device for obtaining channel state information
    9.
    发明授权
    Method for feeding back channel state information, and method and device for obtaining channel state information 有权
    反馈信道状态信息的方法，获取信道状态信息的方法和装置

    公开(公告)号：US08995369B2

    公开(公告)日：2015-03-31

    申请号：US13529383

    申请日：2012-06-21

    申请人： Bin Li ,  Hui Shen ,  Yi Luo ,  Xiaodong Wang

    发明人： Bin Li ,  Hui Shen ,  Yi Luo ,  Xiaodong Wang

    IPC分类号： H04W4/00 ,  H04B7/06 ,  H04L1/00 ,  H04L25/02 ,  H04L5/00 ,  H04L25/03

    CPC分类号： H04B7/0639 ,  H04B7/0626 ,  H04L1/0026 ,  H04L5/006 ,  H04L25/0204 ,  H04L2025/03802

    摘要： Embodiments of the present invention provide a method for feeding back channel state information, and a method and a device for obtaining channel state information. The method for feeding back the channel state information includes: compressing, by a user equipment, original time domain channel state information to obtain compressed time domain channel state information; quantizing the compressed time domain channel state information to obtain a codebook index; and sending the codebook index to a base station. With the technical solutions provided by the embodiments of the present invention, the total overhead used for feeding back the channel state information from the user equipment to the base station is reduced.

    摘要翻译： 本发明的实施例提供一种用于反馈信道状态信息的方法，以及用于获得信道状态信息的方法和装置。 用于反馈信道状态信息的方法包括：由用户设备压缩原始时域信道状态信息，以获得压缩的时域信道状态信息; 量化压缩的时域信道状态信息以获得码本索引; 并将码本索引发送到基站。 利用本发明实施例提供的技术方案，减少了从用户设备向基站反馈信道状态信息的总开销。

    User input back channel for wireless displays
    10.
    发明授权
    User input back channel for wireless displays 有权
    无线显示器的用户输入返回通道

    公开(公告)号：US08964783B2

    公开(公告)日：2015-02-24

    申请号：US13344262

    申请日：2012-01-05

    申请人： Xiaolong Huang ,  Vijayalakshmi R. Raveendran ,  Xiaodong Wang ,  Fawad Shaukat

    发明人： Xiaolong Huang ,  Vijayalakshmi R. Raveendran ,  Xiaodong Wang ,  Fawad Shaukat

    IPC分类号： H04J3/24 ,  H04L29/06

    CPC分类号： H04L65/608

    摘要： 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 inputs 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. As part of transmitting user input to the source device, the sink device can generate a data packet that identifies a user input category for the user input, and the source device can process the data packet based on the user input category.

    摘要翻译： 作为通信会话的一部分，无线源设备可以将音频和视频数据发送到无线接收设备，并且无线接收设备可以将在无线接收设备处接收的用户输入发送回无线源设备。 以这种方式，无线接收设备的用户可以控制无线源设备并且控制正在从无线源设备发送到无线接收设备的内容。 作为向源设备发送用户输入的一部分，宿设备可以生成识别用户输入的用户输入类别的数据分组，并且源设备可以基于用户输入类别来处理数据分组。