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    • 43. 发明授权
    • Automatic gain control circuit
    • 自动增益控制电路
    • US4928074A
    • 1990-05-22
    • US365672
    • 1989-06-13
    • Mitsuru SatoTetsuya IizukaKiyoshi FuruyaNorio ShojiMasato Sekine
    • Mitsuru SatoTetsuya IizukaKiyoshi FuruyaNorio ShojiMasato Sekine
    • H03G3/30H03G1/00H03G3/10H03G3/20
    • H03G3/3005H03G1/0023
    • An automatic gain control circuit having a variable gain amplifier circuit, a signal level detecting circuit connected to the variable gain amplifier circuit for generating a detect signal the level of which changes in response to a signal level of an output signal of the variable gain amplifier circuit, and a gain control circuit for controlling the gain of the variable gain amplifier circuit in accordance with the signal level of the detect signal, and the gain control circuit having a differential amplifier circuit having first and second input terminals, the first and second input terminals being connected to the signal level detecting circuit for receiving the detect signal, a first reference voltage source connected to the first input terminal of the differential amplifier so that a first predetermined voltage is provided instead of the signal level of the detect signal in response to the signal level of the detect signal and a second reference voltage source connected to the second input terminal of the differential amplifier for providing a second predetermined voltage.
    • 一种具有可变增益放大器电路的自动增益控制电路,连接到可变增益放大器电路的信号电平检测电路,用于产生响应于可变增益放大器电路的输出信号的信号电平改变的检测信号 以及增益控制电路,用于根据检测信号的信号电平来控制可变增益放大器电路的增益,并且增益控制电路具有具有第一和第二输入端的差分放大器电路,第一和第二输入端 连接到用于接收检测信号的信号电平检测电路;第一参考电压源,连接到差分放大器的第一输入端,使得提供第一预定电压代替检测信号的信号电平, 所述检测信号的信号电平和连接到所述第二参考电压源的第二参考电压源 用于提供第二预定电压的差分放大器的输入端。
    • 44. 发明授权
    • Apparatus for transmitting liquid and gas in an endoscope
    • 用于在内窥镜中传送液体和气体的装置
    • US4844052A
    • 1989-07-04
    • US167172
    • 1988-03-11
    • Keiichi IwakoshiMitsuru SatoHiroyuki UmedaToshinori Nishizawa
    • Keiichi IwakoshiMitsuru SatoHiroyuki UmedaToshinori Nishizawa
    • G02B23/24A61B1/00A61B1/12
    • A61B1/126
    • An apparatus for transmitting liquid and gas in an endoscope comprising conduits for transmitting liquid and gas to an observation optical system to clean the observation optical system; and an automatic change-over device for sequentially operating both modes of the liquid and gas transmissions by turning on and off only a liquid transmitting switch disposed in an operating portion. The automatic change-over device comprises a first electromagnetic valve disposed in the liquid transmitting conduit, a second electromagnetic valve disposed in the gas transmitting conduit, a circuit for connecting the first and second electromagnetic valves to the liquid transmitting switch of the operating portion, and a control section for controlling the operations of the electromagnetic valves. When the liquid transmitting switch is turned on, the first electromagnetic valve is opened to transmit the liquid to the liquid transmitting conduit, and when the liquid transmitting switch is turned off, the first electromagnetic valve is automatically closed and the second electromagnetic valve is automatically opened to transmit the gas to the gas transmitting conduit for a constant or predetermined time.
    • 一种用于在内窥镜中传送液体和气体的装置,包括用于将液体和气体传输到观察光学系统以清洁观察光学系统的导管; 以及自动切换装置,用于通过仅打开和关闭设置在操作部分中的液体传输开关来顺序地操作液体和气体传输的两种模式。 自动切换装置包括设置在液体传输导管中的第一电磁阀,设置在气体传输导管中的第二电磁阀,用于将第一和第二电磁阀连接到操作部分的液体传输开关的电路,以及 用于控制电磁阀的操作的控制部。 当液体传输开关接通时,第一电磁阀打开以将液体传送到液体传输导管,当液体传输开关关闭时,第一电磁阀自动关闭,第二电磁阀自动打开 以将气体传输到气体传输管道一段恒定或预定的时间。
    • 46. 发明授权
    • Waterproof endoscope
    • 防水内窥镜
    • US4545369A
    • 1985-10-08
    • US605620
    • 1984-04-30
    • Mitsuru Sato
    • Mitsuru Sato
    • A61B1/00A61B1/12G02B23/24A61B1/06
    • A61B1/121
    • A waterproof endoscope includes a insertion tube adapted to be inserted into a hollow organ. A hollow housing is connected to the insertion tube in an air-tight manner and disposed in communication therewith, the housing having an aperture formed therethrough. Mounted on the housing is a valve which includes a valve element for normally closing the aperture in the housing, and a spring made of a marmen alloy which is returned to a preselected shape at a predetermined temperature so as to urge the valve element away from the aperture, thereby opening the valve.
    • 防水内窥镜包括适于插入中空器官的插入管。 中空壳体以气密的方式连接到插入管并与之连通,壳体具有穿过其形成的孔。 安装在壳体上的是一种阀,其包括用于正常关闭壳体中的孔的阀元件和由合金合金制成的弹簧,该弹簧以预定温度返回到预选形状,以便将阀元件推离 孔,从而打开阀。
    • 48. 发明授权
    • Wireless terminal and retransmission method
    • 无线终端和重传方式
    • US08351864B2
    • 2013-01-08
    • US12933343
    • 2008-12-08
    • Mitsuru Sato
    • Mitsuru Sato
    • H04B17/00G08C25/00H04L1/18
    • H04L1/0002H04L1/1887
    • A wireless terminal capable of securing the number of station units capable of simultaneous communication with one unit of access point, reducing power consumption, and ensuring stable communication quality. In the wireless terminal (100), an interference determining section (109) determines whether or not an interference wave is at a predetermined level or more on the basis of the RSSI and SNR of the received signals which are calculated by an RSSI (Received Signal Strength Indicator) calculating section (104) and SNR (Signal to Noise Ratio) calculating section (105) and the presence/absence of a demodulation error notified from a demodulation section (108). A number-of-retransmission upper limit setting section (113) sets the upper limit of the number of retransmission smaller than when the interference wave is at the predetermined level or lower if the interference wave is at the predetermined level or more. A WLAN transmitting circuit (115) repeats the transmission of a transmitting signal by the upper limit number of retransmission till the transmission of the transmitting signal is successful.
    • 一种无线终端,其能够确保能够与一个接入点同时通信的站单元的数量,降低功耗,并确保稳定的通信质量。 在无线终端(100)中,干扰判定部(109)基于RSSI(接收信号(RSSI))计算出的接收信号的RSSI和SNR,判断干扰波是否处于规定级别以上 强度指示符计算部分(104)和SNR(信噪比)计算部分(105)以及从解调部分(108)通知的解调错误的存在/不存在。 重发次数上限设定部(113)将发送次数的上限设定为比干扰波处于预定电平以上时的干扰波处于规定电平以下的上限。 WLAN发送电路(115)通过重传的上限次数重复发送发送信号,直到发送信号的发送成功为止。