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    • 6. 发明授权
    • Radio receiver apparatus of orthogonal detection type comprising local
oscillator means with improved automatic frequency control arrangement
    • 包括具有改进的自动频率控制装置的本地振荡器装置的无线电接收装置
    • US5548619A
    • 1996-08-20
    • US374915
    • 1995-01-19
    • Yoshio HoriikeYasuo YoshimuraYoshiyuki YokoajiroTerue MatsumuraMakoto HasegawaMasahiro Mimura
    • Yoshio HoriikeYasuo YoshimuraYoshiyuki YokoajiroTerue MatsumuraMakoto HasegawaMasahiro Mimura
    • H04B1/26H04L27/152H04L27/227H04L27/06
    • H04L27/1525H04L27/2273
    • In a radio receiver apparatus of an orthogonal detection type, a voltage controlled first local oscillator generates a first local oscillation signal, and mixers mix an inputted reception signal with the first local oscillation signal and a 90.degree. shifted signal thereof, respectively, the mixed signals respectively being passed through first and second band-pass filters to obtain desired first intermediate frequency signals. Further, a second local oscillator generates a second local oscillation signal. Further mixers mixes the first intermediate frequency signals from the first and second band-pass filters with the second local oscillation signal and a 90.degree. shifted signal thereof, respectively. Then there is calculated either one of a sum of and a difference between the resulting mixed signals, the calculated signal being passed through a third band-pass filter to obtain a second intermediate frequency signal to be demodulated. Furthermore, an average frequency detector detects an average frequency of the second intermediate frequency signal for a predetermined time interval, and a frequency correction circuit controls the first local oscillation frequency of the first local oscillation signal based on the detected average frequency.
    • 在正交检测型的无线电接收机装置中,电压控制的第一本地振荡器产生第一本地振荡信号,并且混频器将输入的接收信号与第一本地振荡信号及其90°移位信号分别混合,混合信号 分别通过第一和第二带通滤波器以获得期望的第一中频信号。 此外,第二本地振荡器产生第二本地振荡信号。 另外的混频器将来自第一和第二带通滤波器的第一中频信号与第二本地振荡信号和其90度移位信号分别混合。 然后,计算得到的混合信号之和的和之一,计算出的信号通过第三带通滤波器以获得待解调的第二中频信号。 此外,平均频率检测器以预定时间间隔检测第二中频信号的平均频率,并且频率校正电路基于检测到的平均频率来控制第一本地振荡信号的第一本地振荡频率。
    • 9. 发明授权
    • Residential facility control system
    • 住宅设施控制系统
    • US5446453A
    • 1995-08-29
    • US43560
    • 1993-04-07
    • Shunichi NagamotoTakeshi MuramatuYasuo YoshimuraMasahiro Yamamoto
    • Shunichi NagamotoTakeshi MuramatuYasuo YoshimuraMasahiro Yamamoto
    • G08C17/02H04B1/16G05B23/02
    • G08C17/02H04W52/0258H04W52/028Y02B60/50
    • A residential facility control system transmits data as a radio signal between host and subsidiary apparatus. Transmitting and receiving devices of the host and subsidiary apparatus are reduced in power consumption. A transmitting circuit of the transmitting device of the transmitting and receiving apparatus is supplied with power from a transmitting circuit power source control in synchronization with a first timing signal from a first timer for a period of time which is necessary for transmission. A receiving circuit of the receiving device of the transmitting and receiving device is supplied with power from a receiving circuit power source control for a shorter period of time in synchronization with a second timing signal from a second timer which is synchronized with the first timing signal. When the receiving circuit receives a signal for the shorter power supply period of time, the receiving power source control maintains power supply to the receiving circuit for a period of time which is necessary to receive the signal. Synchronization between the first and second timing signals is achieved by initializing the second timer by way of timer synchronization device each time when the receiving device receives an effective signal or by regularly transmitting a forced synchronization signal to the receiving device from a forced synchronization signal generator provided in the transmitting device and by receiving the synchronization signal at the receiving device to initialize the second timer by way of the timer synchronization device.
    • 住宅设施控制系统在主机和辅助设备之间传输数据作为无线电信号。 主机和辅助设备的发送和接收设备的功耗降低。 发送和接收装置的发送装置的发送电路与来自第一定时器的第一定时信号同步地发送来自发送电路电源控制的电力一段时间,这是发送所必需的。 与来自与第一定时信号同步的第二定时器的第二定时信号同步地,从接收电路电源控制提供发送和接收设备的接收设备的接收电路较短的时间段。 当接收电路接收到较短的电源时段的信号时,接收电源控制在接收信号所需的一段时间内维持接收电路的电源。 第一定时信号和第二定时信号之间的同步通过每当接收设备接收到有效信号时通过定时器同步装置初始化第二定时器或者通过从提供的强制同步信号发生器向接收设备定期发送强制同步信号来实现 并且通过在接收设备处接收同步信号,以通过定时器同步装置来初始化第二定时器。
    • 10. 发明授权
    • Automatic iris adjustment system
    • 自动光圈调节系统
    • US4638366A
    • 1987-01-20
    • US779793
    • 1985-09-24
    • Yasuo YoshimuraKunio YamauchiKenji Saito
    • Yasuo YoshimuraKunio YamauchiKenji Saito
    • H04N5/238
    • H04N5/238
    • An automatic iris adjustment system comprises a camera lens including an iris driving means for controlling the iris value; an image pickup element for converting the amount of light incident to the camera lens into an electrical signal; means for comparing the iris adjustment signal voltage V.sub.I from the image pickup element with the reference voltage V.sub.O to evaluate an error voltage V.sub.E (i.e., V.sub.E =V.sub.I -V.sub.O); means for calculating a varying component .DELTA.IRIS of iris control value as a predetermined function of the error voltage V.sub.E ; means for calculating an iris control value IRIS.sub.n basing on the calculated varying component .DELTA.IRIS of iris control value; and means for controlling the iris driving means in response to the calculated iris control value IRIS.sub.n.
    • 一种自动光圈调节系统,包括一个照相机镜头,它包括用于控制光圈值的光圈驱动装置; 用于将入射到相机透镜的光量转换成电信号的图像拾取元件; 用于将来自图像拾取元件的虹膜调节信号电压VI与参考电压VO进行比较的装置,以评估误差电压VE(即VE = VI-VO); 用于计算作为误差电压VE的预定函数的光圈控制值的变化分量DELTA IRIS的装置; 用于基于所计算的虹膜控制值的变化分量DELTA IRIS计算虹膜控制值IRISn的装置; 以及用于响应于所计算的光圈控制值IRISn来控制光圈驱动装置的装置。