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    • 51. 发明申请
    • Multi-stage output buffer
    • 多级输出缓冲器
    • US20060049871A1
    • 2006-03-09
    • US10934164
    • 2004-09-03
    • Hans-Martin ReinHao Li
    • Hans-Martin ReinHao Li
    • H03F3/45
    • H03F1/0205H03B5/1209H03B5/1228H03B5/124H03F3/191H03F3/195H03F3/4508H03F3/50H03F2203/45704H03F2203/45706H03L7/099
    • A multi-stage output buffer is disclosed having a differential input and a differential output. The output buffer includes an emitter follower circuit coupled to the differential input that is configured to provide a substantially high input impedance at an input thereof, and provide a substantially low output impedance at an output thereof. An emitter coupled pair circuit is coupled to the output of the emitter follower circuit, and is configured to amplify the signal and further isolate an input circuit when coupled to the differential input of the multi-stage output buffer from an external load when coupled to the differential output thereof. The buffer further includes a base-grounded transistor circuit coupled to an output of the emitter coupled pair circuit and having an output coupled to the differential output of the multi-stage output buffer. The base-grounded transistor circuit is configured to reduce a load impedance at the output of the emitter coupled pair circuit, thereby improving a speed thereof. The base-grounded transistor circuit further improves decoupling of the external load from an input circuit when coupled thereto and increases the output power.
    • 公开了具有差分输入和差分输出的多级输出缓冲器。 输出缓冲器包括耦合到差分输入的射极跟随器电路,其被配置为在其输入处提供基本上高的输入阻抗,并且在其输出处提供基本上低的输出阻抗。 发射极耦合对电路耦合到射极跟随器电路的输出端,并且被配置为放大信号并进一步隔离输入电路,当耦合到与多级输出缓冲器的差分输入耦合到多级输出缓冲器 差分输出。 缓冲器还包括耦合到发射极耦合对电路的输出的基极接地晶体管电路,并且具有耦合到多级输出缓冲器的差分输出的输出。 基极接地晶体管电路被配置为减小发射极耦合对电路的输出处的负载阻抗,从而提高其速度。 基极接地晶体管电路进一步改善外部负载与输入电路耦合时的去耦耦合,并提高输出功率。
    • 58. 发明申请
    • Method and Surveillance System for Detecting Unwanted Intrusion based on Interactions between Wireless Communication and Monitoring Devices
    • 基于无线通信和监控设备之间的相互作用检测不必要入侵的方法和监控系统
    • US20160217683A1
    • 2016-07-28
    • US14604708
    • 2015-01-24
    • Hao Li
    • Hao Li
    • G08B29/26G06K9/00G08B13/00H04W12/00
    • G08B29/26G06K9/00771G08B13/00G08B13/19602G08B25/08H04W12/12
    • A method and surveillance system are presented for detecting and alarming intrusions that are caused by unwanted people in a protected area, by exploiting interactions between the wireless communication and monitoring devices of the surveillance system but no special sensors. An intrusion in the protected area is primarily detected by analyzing the variation of the wireless channel observed at the wireless communication device, and further confirmed by images captured by the monitoring device, where the image capture can be triggered by the intrusion detection result. The threshold used to primarily determine the existence of an intrusion is self-calibrated by comparing the result of the channel-variation based intrusion detection with the findings of the captured images. Moreover, an intrusion caused by authorized people of the protected area is identified through checking the connection status of the secured wireless communication network in the protected area, and then filtered out.
    • 提出了一种方法和监控系统,用于通过利用监视系统的无线通信和监控设备之间的相互作用,但没有特殊的传感器来检测和报警由受保护区域中不需要的人造成的入侵。 主要通过分析无线通信设备观测到的无线信道的变化来检测受保护区域的入侵,并且由监视设备拍摄的图像进一步确认,其中可以通过入侵检测结果触发图像捕获。 用于主要确定入侵的存在的阈值是通过将基于通道变化的入侵检测的结果与捕获的图像的发现进行比较来进行自校准的。 此外,通过检查受保护区域中的安全无线通信网络的连接状态来识别受保护区域的授权人员造成的入侵,然后过滤掉。
    • 59. 发明授权
    • SERS substrates
    • SERS底物
    • US09360429B2
    • 2016-06-07
    • US14522754
    • 2014-10-24
    • Hao LiMengshi LinQingsong Yu
    • Hao LiMengshi LinQingsong Yu
    • G01J3/44G01N21/65B82Y15/00B82Y20/00
    • G01N21/658B82Y15/00B82Y20/00G01N2201/06113Y10S977/773Y10S977/811
    • A surface-enhanced Raman spectroscopy substrate device, including a base substrate, a single or multiple layered nanostructure that contains metals, and a plasma coating. The nanostructure metal is selected from the group including silver, gold, platinum, copper, titanium, chromium, and combinations thereof. The plasma coating has a thickness of 1-200 nm and may locate on the nanostructure layer or on the base substrate. The plasma coating can precisely control the surface characteristics, including surface energy, hydrophilicity, and contact angle, of the SERS device and may then help to regulate the SERS substrate with well defined and uniform water/oil contact angle with small standard deviation. The water contact angle of the SERS substrate may range from 20 to 140 degrees.
    • 表面增强拉曼光谱基板装置,包括基底,含有金属的单层或多层纳米结构和等离子涂层。 纳米结构金属选自银,金,铂,铜,钛,铬及其组合。 等离子体涂层的厚度为1-200nm,可以位于纳米结构层或基底上。 等离子体涂层可以精确地控制SERS器件的表面能,包括表面能,亲水性和接触角,并且可以帮助以较小的标准偏差限制和均匀的水/油接触角来调节SERS衬底。 SERS底物的水接触角可以在20至140度的范围内。