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    • 12. 发明授权
    • Transmission with collision detection and mitigation for wireless communication
    • 带有碰撞检测和缓解的无线通信传输
    • US08743823B2
    • 2014-06-03
    • US12370092
    • 2009-02-12
    • Thomas RichardsonXinzhou WuYing WangSaurabh TavildarJunyi Li
    • Thomas RichardsonXinzhou WuYing WangSaurabh TavildarJunyi Li
    • H04W4/00H04W72/04H04W74/08
    • H04W72/0446H04W8/005H04W74/08H04W74/0825
    • Techniques for transmitting signals on shared resources in a manner to detect and/or combat collision are described. In an aspect, a terminal may transmit a signal on a subset of resource elements in a resource block, and at least one null resource element with no signal may be used to detect for collision of the signal. In another aspect, different terminals may simultaneously transmit their signals on different subsets of resource elements in a resource block. These different subsets of resource elements may be pseudo-randomly selected to randomize interference. In one design, a terminal may determine a resource block to use for transmission of a signal, select a subset of the resource elements in the resource block, and transmit the signal on the selected resource elements, e.g., to at least one other terminal for peer-to-peer communication. The signal may be a peer discovery signal, a paging signal, etc.
    • 描述了以共享资源发送信号以检测和/或防止碰撞的方式。 在一方面,终端可以在资源块中的资源元素的子集上发送信号,并且可以使用至少一个没有信号的空资源元素来检测信号的冲突。 在另一方面,不同的终端可以在资源块中的资源元素的不同子集上同时发送它们的信号。 这些不同的资源元素子集可以被伪随机地选择以随机化干扰。 在一种设计中,终端可以确定用于信号传输的资源块,选择资源块中的资源元素的子集,并将所选择的资源元素上的信号,例如至少一个其他终端发送到 对等通信。 信号可以是对等体发现信号,寻呼信号等。
    • 14. 发明申请
    • FEEDBACK DETECTION CIRCUIT
    • 反馈检测电路
    • US20140062428A1
    • 2014-03-06
    • US13604635
    • 2012-09-06
    • Shian-Sung ShiuKe PengLi-Min LeeYing WangYong Huang
    • Shian-Sung ShiuKe PengLi-Min LeeYing WangYong Huang
    • G05F1/10
    • H05B33/0848
    • Disclosed is a feedback detection circuit, adapted to provide a feedback detection signal wherein a converting circuit provides a driving power source to drive a load according to the feedback detection signal. The feedback detection circuit comprises an operational conversion circuit and a signal limitation circuit. The operational conversion circuit generates the feedback detection signal in response to a level of a detected node of the load. The operational conversion circuit has an operational amplifier, which modulates the level of the feedback detection signal in response to the level of the detected node. The signal limitation circuit is coupled to the operational conversion circuit for clamping a level rang of the feedback detection signal.
    • 公开了一种反馈检测电路,其适于提供反馈检测信号,其中转换电路根据反馈检测信号提供驱动电源来驱动负载。 反馈检测电路包括操作转换电路和信号限制电路。 操作转换电路响应于检测到的负载节点的电平而产生反馈检测信号。 操作转换电路具有运算放大器,其响应于检测到的节点的电平来调制反馈检测信号的电平。 信号限制电路耦合到操作转换电路,用于钳位反馈检测信号的电平。
    • 17. 发明授权
    • Automatic gain control in a wireless communication network
    • 无线通信网络中的自动增益控制
    • US08526900B2
    • 2013-09-03
    • US13544169
    • 2012-07-09
    • Junyi LiYing WangThomas RichardsonAleksandar Jovicic
    • Junyi LiYing WangThomas RichardsonAleksandar Jovicic
    • H04B7/00
    • H03G3/3078H03G3/3089H04W52/383H04W52/52
    • Techniques for performing automatic gain control (AGC) at a terminal in a wireless communication network are described. In an aspect, the terminal may use different receiver gain settings to receive different types of signals in different time intervals. The terminal may determine a receiver gain setting for each signal type and may use the receiver gain setting to receive signals of that signal type. In another aspect, the terminal may determine a receiver gain setting for a future time interval based on received power levels for peer terminals expected to transmit in that time interval. The terminal may measure received power levels of signals received from a plurality of terminals. The terminal may determine a set of terminals expected to transmit in the future time interval and may determine the receiver gain setting for the future time interval based on the measured received power levels.
    • 描述了在无线通信网络中的终端处执行自动增益控制(AGC)的技术。 在一方面,终端可以使用不同的接收机增益设置来以不同的时间间隔接收不同类型的信号。 终端可以确定每个信号类型的接收机增益设置,并且可以使用接收机增益设置来接收该信号类型的信号。 在另一方面,终端可以基于期望在该时间间隔中发送的对等终端的接收功率电平来确定未来时间间隔的接收机增益设置。 终端可以测量从多个终端接收的信号的接收功率电平。 终端可以确定期望在未来时间间隔中发送的一组终端,并且可以基于测量的接收功率电平来确定未来时间间隔的接收机增益设置。
    • 19. 发明申请
    • METHODS AND APPARATUS FOR PROVIDING FLEXIBILITY IN PEER DISCOVERY RANGE AND FREQUENCY OF UPDATES
    • 在同行发现范围和频率更新中提供灵活性的方法和装置
    • US20130010618A1
    • 2013-01-10
    • US13323270
    • 2011-12-12
    • Ying WangSundar SubramanianXinzhou WuThomas J. RichardsonJunyi Li
    • Ying WangSundar SubramanianXinzhou WuThomas J. RichardsonJunyi Li
    • H04W24/00
    • H04W8/005H04W84/18
    • A method, a computer program product, and an apparatus for wireless communication are provided. The apparatus transmits a first peer discovery signal with a first periodicity/temporal frequency in a first set of peer discovery resources. The apparatus determines an energy on an allocated peer discovery resource of a second set of peer discovery resources. The apparatus refrains from transmitting a second peer discovery signal in the second set of peer discovery resources when the energy is greater than a threshold. The apparatus transmits the second peer discovery signal in the second set of peer discovery resources with a second periodicity/temporal frequency less than the first periodicity/temporal frequency when the energy is less than the threshold. The apparatus may utilize the first set of peer discovery resources every period and the second set of peer discovery resources once every N periods in which once every N periods is the second periodicity.
    • 提供了一种方法,计算机程序产品和用于无线通信的装置。 该设备在第一组对等体发现资源中发送具有第一周期/时间频率的第一对等体发现信号。 设备确定第二组对等体发现资源的分配的对等体发现资源上的能量。 当能量大于阈值时,该装置禁止在第二组对等体发现资源中发送第二对等体发现信号。 当能量小于阈值时,该设备以第二周期/时间频率小于第一周期/时间频率,在第二组对等体发现资源中发送第二对等体发现信号。 该装置可以每N个周期每周期利用第一组对等体发现资源和第二组对等体发现资源,其中每N个周期中的一个是第二周期。
    • 20. 发明申请
    • LED DRIVING CIRCUIT
    • LED驱动电路
    • US20120268011A1
    • 2012-10-25
    • US13244653
    • 2011-09-25
    • Shian-Sung ShiuLi-Min LeeChung-Che YuXi TuYing Wang
    • Shian-Sung ShiuLi-Min LeeChung-Che YuXi TuYing Wang
    • H05B37/02
    • H05B33/0815H05B33/0827
    • An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.
    • LED驱动电路包括第一和第二LED模块,第一和第二开关转换器,极值电压检测和选择电路,电流平衡电路和控制器。 第一开关转换器将输入电源的电力变换为第一输出电压以点亮第一LED模块。 第二开关转换器将输入电源的电力转换成用于照亮第二LED模块的第二输出电压。 电流平衡电路平衡流经第一和第二LED模块的电流。 极端电压检测和选择电路检测第一和第二LED模块,并选择输出检测结果之一。 控制器控制第一开关转换器和第二开关转换器的变换,以响应于输出的检测结果点亮第一和第二LED模块。