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    • 24. 发明授权
    • Optical sensor interrogation system based on FDML wavelength swept laser
    • 基于FDML波长扫描激光的光学传感器询问系统
    • US08400640B2
    • 2013-03-19
    • US12566403
    • 2009-09-24
    • Chang-Seok KimMyung-Yung JeongJae-Seok ParkEun-Joo JungHyung-Seok Lee
    • Chang-Seok KimMyung-Yung JeongJae-Seok ParkEun-Joo JungHyung-Seok Lee
    • G01B9/02
    • G01J3/2889G01D5/35316G01J3/02G01J3/0218G01J3/0245G01J3/10G01J3/26G01J3/42G01J3/4338
    • Provided is an optical sensor interrogation system. The optical sensor interrogation system includes: a light source unit which matches round-trip time of light and wavelength tunable cycle time of light in a resonator and emits light; a sensing unit which receives an optical signal in which a center wavelength periodically tunes, from the light source unit and tunes the center wavelength of the optical signal according to physical changes applied from the outside; and a signal processing unit which receives the optical signal reflected from the sensing unit, detects data, and images the data. In particular, the light source unit includes a delaying unit which delays the round-trip time of light and a tunable filter which tunes the wavelength of light so as to match the round-trip time of light with the wavelength tunable cycle time of light. Accordingly, a Fourier domain mode locking (FDML) wavelength swept laser, which operates at speed of several tens kHz or above, is used as a light source so that strain of a fluid, which changes in a short time interval of 0.1 msec or below, is precisely measured and thus a real-time analysis may be performed at high speed.
    • 提供了一种光学传感器询问系统。 光传感器询问系统包括:光源单元,其匹配谐振器中的光的往返时间和波长可调周期时间,并发光; 感测单元,其从光源单元接收中心波长周期性调谐的光信号,并根据从外部施加的物理变化调谐光信号的中心波长; 以及信号处理单元,其接收从感测单元反射的光信号,检测数据并对数据进行成像。 特别地,光源单元包括延迟光的往返时间的延迟单元和调节光的波长的可调谐滤波器,以便匹配光的往返时间与光的波长可调周期时间。 因此,以几十kHz或更高速度运行的傅立叶域模式锁定(FDML)波长扫描激光器被用作光源,使得在0.1msec或更短的时间间隔内变化的流体应变 ,被精确测量,因此可以高速执行实时分析。
    • 30. 发明授权
    • Antifuse circuit being programmable by using no connection pin
    • 防漏电路可通过不使用连接引脚进行编程
    • US06333666B2
    • 2001-12-25
    • US09737854
    • 2000-12-18
    • Phil-Jung KimJae-Kyung WeeChang-Hyuk LeeJin-Keun OhJae-Seok ParkOh-Won KwonHo-Youb Cho
    • Phil-Jung KimJae-Kyung WeeChang-Hyuk LeeJin-Keun OhJae-Seok ParkOh-Won KwonHo-Youb Cho
    • H01H3776
    • G11C17/18
    • An antifuse circuit provides a stabilized high voltage to an antifuse programming circuit through the use of an NC pin which is not used in the chip operation. For the purpose, the antifuse circuit includes a power-up detecting circuit for generating a power stabilization signal by detecting a supply voltage; a power-up pulse circuit for generating a first and a second control signal in response to the power stabilization signal; an antifuse programming circuit for, under the control of the first and the second control signals, detecting whether an antifuse element is programmed or not, latching the result of the detection and programming the antifuse element in response to an external high voltage and a precharge signal; a pin for receiving the external high voltage so as to program the antifuse element; a pad for providing the external high voltage to the inside of the chip; and a diode for supplying the external high voltage to the antifuse programming circuit and preventing a voltage of the antifuse programming circuit from being provided to the pin.
    • 反熔丝电路通过使用不用于芯片操作的NC引脚向反熔丝编程电路提供稳定的高电压。 为此,反熔丝电路包括用于通过检测电源电压来产生功率稳定信号的上电检测电路; 上电脉冲电路,用于响应于所述功率稳定信号产生第一和第二控制信号; 反熔丝编程电路,用于在第一和第二控制信号的控制下检测反熔丝元件是否被编程,锁存检测结果并响应于外部高电压和预充电信号编程反熔丝元件 ; 用于接收外部高电压以便对反熔丝元件进行编程的引脚; 用于向芯片内部提供外部高电压的焊盘; 以及用于将外部高电压提供给反熔丝编程电路并防止反熔丝编程电路的电压被提供给引脚的二极管。