公开(公告)号：US5852466A

公开(公告)日：1998-12-22

申请号：US599666

申请日：1996-02-12

申请人： Takayuki Komine ,  Hisashi Kawai

发明人： Takayuki Komine ,  Hisashi Kawai

IPC分类号： H04N7/14 ,  H04N7/15

CPC分类号： H04N7/147 ,  H04N7/148 ,  H04N7/15

摘要： A teleconference system by which a reservation for use can be readily and certainly established. The teleconference system includes an input unit for inputting image data and audio data; an output unit for outputting image data and audio data; a communication unit for multiplexing the image data and the audio data; a reservation management unit for controlling a reservation time at which the teleconference system is used and for allowing a reservation partner to use the teleconference system when the reservation time has come; and an interface unit for connecting with an external device. The reservation management unit performs a reservation control of a teleconference system based on reservation information sent from the external device via the interface unit.

摘要翻译： 一个电话会议系统，可以容易和肯定地建立使用预约。 电话会议系统包括用于输入图像数据和音频数据的输入单元; 用于输出图像数据和音频数据的输出单元; 用于复用图像数据和音频数据的通信单元; 预约管理单元，用于控制使用电话会议系统的预定时间，并且当预约时间到来时，允许预约伴侣使用电话会议系统; 以及用于与外部设备连接的接口单元。 预约管理单元基于经由接口单元从外部设备发送的预约信息来执行电话会议系统的预约控制。

公开(公告)号：US06437824B1

公开(公告)日：2002-08-20

申请号：US09018006

申请日：1998-02-03

申请人： Yasuo Suzuki ,  Hisashi Kawai ,  Takayuki Komine ,  Hitoshi Yasuda ,  Kunihiko Tabei

发明人： Yasuo Suzuki ,  Hisashi Kawai ,  Takayuki Komine ,  Hitoshi Yasuda ,  Kunihiko Tabei

IPC分类号： H04N5335

CPC分类号： H04N7/106 ,  H04N5/23203 ,  H04N7/08 ,  H04N7/088

摘要： A camera section for photographing an object to generate a video signal is connected via a cable to a video signal processing section that receives and processes the video signal. When the camera section is replaced with a different one, signals corresponding to the new camera section are automatically provided. A video signal, a synchronizing signal therefor, a clock signal, and control data are multiplexed on a signal line in the cable and the signal obtained is transmitted from the camera section to the video signal processing section, and control data is sent from the video signal processing section to the camera section. These control data are transmitted during a vertical interval of the video signal, and a DC voltage is supplied to the camera section from the video signal processing section via a shield line that is paired with the signal line in the cable.

摘要翻译： 用于拍摄对象以产生视频信号的相机部分经由电缆连接到接收并处理视频信号的视频信号处理部分。 当相机部分被替换为不同的相机部分时，将自动提供与新相机部分对应的信号。 视频信号，其同步信号，时钟信号和控制数据被复用在电缆中的信号线上，并且所获得的信号从相机部分发送到视频信号处理部分，并且从视频发送控制数据 信号处理部分到相机部分。 这些控制数据在视频信号的垂直间隔期间被发送，并且通过与电缆中的信号线配对的屏蔽线，从视频信号处理部分向摄像机部分提供直流电压。

公开(公告)号：US20060189282A1

公开(公告)日：2006-08-24

申请号：US10532338

申请日：2003-10-20

申请人： Norio Hasegawa ,  Tetsuhiko Miyatani ,  Hisashi Kawai ,  Masami Yoshida ,  Jun Watanabe

发明人： Norio Hasegawa ,  Tetsuhiko Miyatani ,  Hisashi Kawai ,  Masami Yoshida ,  Jun Watanabe

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H04L27/2614

摘要： A transmitter for averagedly suppressing the variation in input level of an amplifier according to variation in carrier level. The transmitter comprises an input power calculation section (16) for calculating mean input power of each carrier, an output power calculating section (17) for calculating mean output power of each carrier after the carrier band is limited, a monitoring section (18) for identifying a carrier having the maximum mean input power, acquiring the maximum value, acquiring the mean output power of the identified carrier, determining the ratio of the mean input power to the mean output power, and calculating level control information which is the ratio of the ratio determined above to a predetermined expected value, and a signal level adjusting section (15) for adjusting the level of a multicarrier signal by multiplying the level control information outputted from the monitoring section (18).

摘要翻译： 一种发射机，用于根据载波电平的变化平均地抑制放大器输入电平的变化。 发射机包括用于计算每个载波的平均输入功率的输入功率计算部分（16），用于在载波频带被限制之后计算每个载波的平均输出功率的输出功率计算部分（17），用于 识别具有最大平均输入功率的载波，获取最大值，获取所识别的载波的平均输出功率，确定平均输入功率与平均输出功率的比率，以及计算作为平均输入功率的比率的电平控制信息 以及用于通过乘以从监视部分（18）输出的电平控制信息来调整多载波信号的电平的信号电平调节部分（15）。

公开(公告)号：US06553083B1

公开(公告)日：2003-04-22

申请号：US09258306

申请日：1999-02-26

申请人： Hisashi Kawai

发明人： Hisashi Kawai

IPC分类号： H04L2706

CPC分类号： H04L27/1525 ,  H04L2027/0057 ,  H04L2027/0067

摘要： The present invention is a frequency control and orthogonal detection circuit and a FSK receiver capable of reducing a circuit size and control of VCO appropriately. The orthogonal detection circuit and the FSK receiver of the present invention include a delay circuit, a decoder for decoding the direction of rotation, and a first integral electric discharging circuit to detect the direction of rotation of the signal point of a signal received. There is also a second delay circuit, an XOR circuit, an adder, and a second integral electric discharging circuit to detect a rotation of the signal point of a signal received. The decision circuit decides a symbol on the basis of them. The AFC circuit controls the frequency of a signal outputted by the VCO in comparison with an ideal signal outputted by the standardizing circuit.

摘要翻译： 本发明是能够适当地减小VCO的电路尺寸和控制的频率控制和正交检测电路和FSK接收机。 本发明的正交检测电路和FSK接收机包括延迟电路，用于解码旋转方向的解码器和用于检测所接收的信号的信号点的旋转方向的第一积分放电电路。 还有第二延迟电路，XOR电路，加法器和第二积分放电电路，用于检测所接收的信号的信号点的旋转。 决策电路根据它们决定一个符号。 与标准化电路输出的理想信号相比，AFC电路控制VCO输出的信号的频率。

公开(公告)号：US5479203A

公开(公告)日：1995-12-26

申请号：US46073

申请日：1993-04-12

申请人： Hisashi Kawai ,  Masami Kojima ,  Eiichi Sato

发明人： Hisashi Kawai ,  Masami Kojima ,  Eiichi Sato

IPC分类号： G03B13/12 ,  H04N5/222 ,  H04N5/232 ,  H04N7/15 ,  H04N7/18

CPC分类号： H04N7/15 ,  H04N5/232 ,  H04N7/183

摘要： A video camera apparatus for a video conference is arranged to detect the zoom level of a zoom lens by a zoom level detecting circuit and to control a motor control circuit according to the result of detection in such a way as to lower the speed of a panning or tilting operation on a video camera accordingly as the position of the zoom lens shifts from a wide-angle position to a telephoto position. In panning or tilting the video camera in a zoom-in state, this arrangement makes the panning or tilting speed lower than the speed of panning or tilting performed in a zoom-back state, so that the movement of objects on a picture displayed on a monitor can be effectively moderated to make the details of the display easily discernible without any unpleasant impression. The arrangement thus facilitates the operation on the video camera.

摘要翻译： 用于视频会议的摄像机装置被布置成通过变焦级别检测电路来检测变焦镜头的变焦级别，并根据检测结果来控制电动机控制电路，以便降低平移速度 或者随着变焦镜头的位置从广角位置移动到长焦位置，在摄像机上进行倾斜操作。 在以放大状态平移或倾斜摄像机的情况下，这种布置使摇摄或倾斜速度低于在缩放状态下执行的平移或倾斜的速度，使得物体在显示在 显示器可以有效地调节，使显示的细节容易辨别，没有任何不愉快的印象。 因此，该装置便于在摄像机上的操作。

公开(公告)号：US20060109387A1

公开(公告)日：2006-05-25

申请号：US11267637

申请日：2005-11-04

申请人： Hisashi Kawai

发明人： Hisashi Kawai

IPC分类号： H04N3/26

CPC分类号： H04N5/74 ,  H04N5/7441

摘要： At least one exemplary embodiment is directed to a projection-type image display apparatus in which a wrong operation caused by noise occurring during lighting a light source lamp is reduced by prohibiting a read and/or write operation for at least a part of a period up to lighting the light source lamp.

摘要翻译： 至少一个示例性实施例涉及一种投影型图像显示装置，其中通过在至少一段时间段内禁止读取和/或写入操作来减少在照明光源灯期间发生的噪声引起的错误操作 照亮光源灯。

公开(公告)号：US07020181B2

公开(公告)日：2006-03-28

申请号：US09984744

申请日：2001-10-31

申请人： Hisashi Kawai

发明人： Hisashi Kawai

IPC分类号： H04B1/69

CPC分类号： H04B1/7115

摘要： The present invention provides a code division multiple access receiver which can maintain the accuracy of the result of demodulation of a received signal at a good level without increasing the scale of circuits and the amount of computation.In the code division multiple access receiver, a control section 14 outputs amplitude-adjusting signals corresponding to the reception level of a received base band signal to an amplitude-adjusting section 20, and the amplitude-adjusting section 20 performs bit operation processes for removing invalid bit data from the complex correlation results of the received base band signal based on the amplitude-adjusting signals.

公开(公告)号：US5818616A

公开(公告)日：1998-10-06

申请号：US661418

申请日：1996-06-07

申请人： Hisashi Kawai

发明人： Hisashi Kawai

IPC分类号： G06F3/033 ,  G06F3/038 ,  G06F3/041 ,  H04B10/10 ,  H04J14/02

CPC分类号： G06F3/038 ,  G06F3/033 ,  G06F3/041 ,  H04B10/1149 ,  H04J14/0298

摘要： In a conference system of the present invention, a terminal modulates a sound signal taken by a micro-phone which is connected to the terminal, a coordinate information signal which is designated using a digitizer, and a video signal. The terminal converts the modulated signals to an optical signal by frequency multiplexing, and send the optical signal to the central device of the system. After the central device receives the optical signal, the device separates and extracts a sound signal, a coordinate signal, and a video signal from the optical signal. Each of these separated signals is sent to a corresponding demodulating circuit to be demodulated, outputted as sound or an image afterwards. Further, the coordinate information signal is processed, for instance, as a command data from a conference attendant.

摘要翻译： 在本发明的会议系统中，终端调制与终端连接的微型电话取得的声音信号，使用数字化仪指定的坐标信息信号和视频信号。 终端通过频率复用将调制信号转换为光信号，并将光信号发送到系统的中央设备。 在中央设备接收到光信号之后，设备从光信号中分离并提取声音信号，坐标信号和视频信号。 将这些分离的信号中的每一个发送到相应的解调电路以进行解调，然后输出为声音或图像。 此外，坐标信息信号例如作为来自会议服务员的命令数据被处理。

公开(公告)号：US5194964A

公开(公告)日：1993-03-16

申请号：US879715

申请日：1992-05-06

申请人： Hisashi Kawai

发明人： Hisashi Kawai

IPC分类号： H04N9/81 ,  H04N9/87

CPC分类号： H04N9/81 ,  H04N9/87

摘要： A video-signal output apparatus according to the present invention is an apparatus for outputting a black-and-white video signal. The video-signal output apparatus is arranged to generate a black-and-white video signal, add a burst signal to the black-and-white video signal, and output the black-and-white video signal with the burst signal added thereto. Accordingly, a black-and-white picture with no cross color can be displayed on a color monitor device.

摘要翻译： 根据本发明的视频信号输出装置是用于输出黑白视频信号的装置。 视频信号输出装置被配置为产生黑白视频信号，将黑白信号添加到黑白视频信号，并输出黑白视频信号与其中添加的突发信号。 因此，可以在彩色监视器装置上显示不具有交叉色的黑白图像。

公开(公告)号：US20070281643A1

公开(公告)日：2007-12-06

申请号：US11806227

申请日：2007-05-30

申请人： Hisashi Kawai

发明人： Hisashi Kawai

IPC分类号： H04B1/18

CPC分类号： H04B1/0483 ,  H04W56/0045

摘要： Delay time in a signal transmitted between nodes in daisy chain connection is accurately compensated. A TRX amplifier measures phase difference between a UL frame received from a downstream chain, and a UL frame to be sent out to an upstream chain, and reports the phase difference to a base transceiver station. The base transceiver station calculates advance amount to be set to a downstream TRX amplifier based on the reported phase difference. The TRX amplifier adjusts phase difference between a DL frame received from an upstream chain, and the UL frame to be sent out to the upstream chain depending on the advance amount.

摘要翻译： 在菊花链连接节点之间传输的信号中的延迟时间被准确地补偿。 TRX放大器测量从下游链接的UL帧与要发送到上行链路的UL帧之间的相位差，并将相位差报告给基站。 基站收发器基于报告的相位差计算要设置到下游TRX放大器的提前量。 TRX放大器根据提前量调节从上游链接的DL帧与要发送到上游链的UL帧之间的相位差。