会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 12. 发明授权
    • Photoflash detector
    • 闪光灯检测器
    • US4494852A
    • 1985-01-22
    • US497880
    • 1983-05-25
    • Roland Smith, Jr.
    • Roland Smith, Jr.
    • G03B17/18G03B17/56
    • G03B17/18
    • A self-contained photodetector for detecting the light flash from a photoflash unit which is supposed to flash when the shutter of a camera opens. The detector has a light-activated SCR for turning on an IC chip timer, which produces an output signal that turns on a transistor and causes a piezoelectric buzzer to produce an audible signal. All these components are powered by a battery which is contained in the same housing with them. This housing has an opening for passing light onto the SCR.
    • 一个独立的光电检测器,用于检测闪光灯单元的闪光灯,当照相机的快门打开时,闪光灯单元应该闪光。 检测器具有用于导通IC芯片定时器的光激活SCR,其产生导通晶体管并导致压电蜂鸣器产生可听信号的输出信号。 所有这些组件由与它们相同的外壳中包含的电池供电。 该壳体具有用于将光照射到SCR上的开口。
    • 14. 发明申请
    • MULTI-OFDM-PROTOCOL BEACON OPERATION
    • US20190288894A1
    • 2019-09-19
    • US16318625
    • 2016-08-30
    • Gary BOUDREAUHassan HALABIANRoland SMITH
    • Gary BOUDREAUHassan HALABIANRoland SMITH
    • H04L27/26H04L5/00H04L27/00H04W16/14
    • Methods and systems for multi-protocol beacon operation in shared spectrum (unlicensed band) are disclosed where an OFDM transmitter is configured to generate transmissions associated with one OFDM technology or protocol using subcarriers of another OFDM technology. In one application, an LTE transmitter (LTE-U) uses LTE subcarriers to generate an interpolated 802.11 (e.g. Wi-Fi) beacon transmission that can be understood by Wi-Fi receivers, for example to reserve the channel for a subsequent LTE transmission. For instance a W-LAN preamble is generated where STF and LTF fields consist in respectively 12 and 52 subcarriers mapped at their respective frequency locations among the 2048 LTE subcarriers with the remaining subcarriers set to 0. In some implementations, the use of beacons can be useful in implementations where it is desirable to gain prioritized access to reserve the channel. Examples of suitable LTE transmissions that would benefit from prioritized channel access include delay or time-sensitive LTE transmissions or transmissions that must occur within a certain time window and/or with a certain periodicity such as LTE control data or signals (e.g. PDCCH), and/or synchronization or reference signals such as the Discovery Reference Signal (DRS) for LAA-LTE). An LTE transmitter can exploit the 802.11 channel access to gain prioritized channel access for transmitting 802.11 Wi-Fi beacons generated using its LTE subcarriers to ensure LTE transmissions take priority over other types of LTE and/or Wi-Fi traffic.