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公开(公告)号：US5745494A
公开(公告)日：1998-04-28
申请号：US859774
申请日：1997-05-21
IPC分类号： H04L12/42 , H04L12/18 , H04L12/433 , H04L12/403
CPC分类号： H04L12/1868 , H04L12/433 , H04L12/1854
摘要： A data frame which is transmitted from a transmitting station is provided with an individual response part (RS) having response bits (S1 to SN) corresponding to all stations on a network, so that the transmitting station initializes the individual response part (RS) in data transfer. Each receiving station outputs its own state to a prescribed position of the individual response part, and the transmitting station monitors the individual response part. Thus, it is possible to correctly confirm whether or not the data is normally transferred to those of the receiving stations which are to receive data.
摘要翻译： 从发送站发送的数据帧具有与网络上的所有站对应的响应位（S1〜SN）的单独响应部（RS），使得发送站将各个响应部（RS）初始化为 数据传输。 每个接收站将其自己的状态输出到个人响应部分的规定位置，并且发送站监视个体响应部分。 因此，可以正确地确认数据是否正常传送到要接收数据的接收站的数据。
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公开(公告)号：US5774503A
公开(公告)日：1998-06-30
申请号：US697164
申请日：1996-08-20
申请人： Koichiro Tanaka , Tomonori Shiomi , Yasuo Nagaishi
发明人： Koichiro Tanaka , Tomonori Shiomi , Yasuo Nagaishi
CPC分类号： H04L27/2332 , H04L27/3872 , H04L2027/003 , H04L2027/0053
摘要： An oscillator 1 generates a local oscillation signal. A quadrature detector 2 converts an inputted carrier band signal into an equivalent low-frequency signal on the basis of the local oscillation signal. A complex multiplier 3 performs complex multiplication of the equivalent low-frequency signal and a complex coefficient to output a detection signal. An amplitude error detecting portion 4 detects a complex amplitude error of the detection signal. A coefficient error calculating portion 5 calculates a quantity proportional to an error of the complex coefficient from the complex amplitude error and the equivalent low-frequency signal and outputs it. A filter 6 converts the output of the coefficient error detecting portion into a complex coefficient and provides it to the complex multiplier 3. A data regenerating portion 7 converts the detection signal into demodulation data and outputs it.
摘要翻译： 振荡器1产生本地振荡信号。 正交检波器2基于本地振荡信号将输入的载波信号转换成等效的低频信号。 复数乘法器3执行等效低频信号和复系数的复数乘法以输出检测信号。 振幅误差检测部分4检测检测信号的复振幅误差。 系数误差计算部分5根据复振幅误差和等效低频信号计算与复系数的误差成比例的量并将其输出。 滤波器6将系数误差检测部分的输出转换为复数系数，并将其提供给复数乘法器3.数据再生部分7将检测信号转换成解调数据并将其输出。
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公开(公告)号：US5714972A
公开(公告)日：1998-02-03
申请号：US601653
申请日：1996-02-14
CPC分类号： G06F3/0354 , G06F1/1626 , G06F1/1694 , G06F3/0485 , G06F2200/1637
摘要： A position detector 1 detects the position of a display screen 4, an image memory 2 stores image information, a selector 3 selects a portion of the image information stored in the image memory 2 in accordance with the position of the display screen 4 detected by the position detector 1 and supplies the selected portion to the display screen 4, and the display screen 4 displays the selected image information. The invention is characterized in that when it is assumed that the entire image information stored in the image memory 2 is drawn in a viewing field space fixed relative to the eye, the selector 3 selects the image information to be drawn on the display screen 4 lying in the viewing field space.
摘要翻译： 位置检测器1检测显示屏幕4的位置，图像存储器2存储图像信息，选择器3根据由图像存储器2检测到的显示屏幕4的位置来选择存储在图像存储器2中的图像信息的一部分 位置检测器1，并将所选择的部分提供给显示屏幕4，并且显示屏幕4显示所选择的图像信息。 本发明的特征在于，当假设存储在图像存储器2中的整个图像信息被绘制在相对于眼睛固定的视野空间中时，选择器3选择在显示屏幕4上绘制的图像信息 在视野空间。
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公开(公告)号：US4660215A
公开(公告)日：1987-04-21
申请号：US678032
申请日：1984-12-04
申请人： Yoshio Horiike , Yasuo Nagaishi , Kiyotake Fukui
发明人： Yoshio Horiike , Yasuo Nagaishi , Kiyotake Fukui
CPC分类号： H04L27/26
摘要： A transmitter/receiver system for converting digital information into a multi-frequency signal for transmission. A reference frequency signal is first transmitted, then a series of frequencies having information indicative of differences with the reference signal are transmitted, and a receiver discriminates differences with the reference frequency signal to decode the information.
摘要翻译： 用于将数字信息转换为多频信号以用于传输的发射机/接收机系统。 首先发送参考频率信号，然后发送具有指示与参考信号的差异的信息的一系列频率，并且接收机鉴别与参考频率信号的差异以对信息进行解码。
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5.发明授权
公开(公告)号：US5774450A
公开(公告)日：1998-06-30
申请号：US580887
申请日：1995-12-29
申请人： Yasuo Harada , Tomohiro Kimura , Hiroshi Oue , Yasuo Nagaishi , Hiroshi Hayashino , Yasuhiro Uno
发明人： Yasuo Harada , Tomohiro Kimura , Hiroshi Oue , Yasuo Nagaishi , Hiroshi Hayashino , Yasuhiro Uno
CPC分类号： H04L27/2613 , H04L27/261 , H04L27/265 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04L27/2675 , H04L27/2679 , H04L27/2682
摘要： An orthogonal frequency division multiplexing signal transmitted from the transmitting end to the receiving end intermittently includes a particular symbol S0 having a predetermined particular pattern in addition to a symbol Sm including data to be transmitted. At the receiving end, the variation in the receiving level and/or the variation in the frequency band of a received signal are detected and corrected on the basis of the received particular symbol S0. Since the particular symbol S0 has a particular pattern, the variation in the level and/or the variation in the frequency are strongly correlated with the variation in the receiving level and/or the variation in the frequency band of the received signal. Consequently, the variation in the receiving level and/or the variation in the frequency band of the received signal can be accurately detected from the particular symbol S0 and consequently high-precision correction can be made.
摘要翻译： 从发送端到接收端间歇地发送的正交频分复用信号除了包括要发送的数据的符号Sm之外还包括具有预定特定模式的特定符号S0。 在接收端，基于所接收的特定符号S0来检测和校正接收信号的接收电平的变化和/或频带的变化。 由于特定符号S0具有特定的模式，所以电平和/或频率变化的变化与接收信号的接收电平的变化和/或频带的变化密切相关。 因此，可以从特定符号S0精确地检测接收电平的接收电平的变化和/或频带的变化，从而可以进行高精度校正。
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