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    • 2. 发明授权
    • Communication apparatus of a home security system
    • 家庭安全系统的通信设备
    • US07779141B2
    • 2010-08-17
    • US10514658
    • 2003-03-13
    • Kazuhiko HashimotoKenji KidaTadashi MikiYasuo Yoshimura
    • Kazuhiko HashimotoKenji KidaTadashi MikiYasuo Yoshimura
    • G06F15/16G06F15/173
    • H04M11/00H04L12/5692
    • The invention provides a communication apparatus used inside a house, a communication system connected thereto, a communication process, and computer program used therefore. The communication apparatus of the present invention connected via a network to one or more terminal appliances in the house, communicates with the outside via two or more different communication configurations including a first communication configuration with a high speed digital transmission technique and a second communication configuration providing service for telephone subscribers. The communication apparatus is characterized in recognizing a situation thereby to disconnect the first communication configuration and to use only the second communication configuration for communication with the outside.
    • 本发明提供了一种在房屋内使用的通信装置,与其连接的通信系统,通信过程和因此使用的计算机程序。 通过网络将本发明的通信装置连接到房屋中的一个或多个终端设备,经由两个或多个不同的通信配置与外部通信,包括具有高速数字传输技术的第一通信配置和提供 服务电话用户。 通信装置的特征在于识别出由此断开第一通信配置并且仅使用第二通信配置来与外部进行通信的情况。
    • 8. 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。