公开(公告)号：US5856997A

公开(公告)日：1999-01-05

申请号：US546040

申请日：1995-10-20

申请人： Norihiro Mochizuki ,  Katsuo Saito ,  Akira Torisawa ,  Toshihiko Myojo ,  Ichiro Kato ,  Tetsuo Kanda ,  Atsushi Takasaki ,  Kazuo Moritomo ,  Rie Suzuki

发明人： Norihiro Mochizuki ,  Katsuo Saito ,  Akira Torisawa ,  Toshihiko Myojo ,  Ichiro Kato ,  Tetsuo Kanda ,  Atsushi Takasaki ,  Kazuo Moritomo ,  Rie Suzuki

IPC分类号： H04B1/7073 ,  H04J13/00 ,  H04B1/69

CPC分类号： H04B1/707

摘要： A receiving apparatus includes a base-band conversion circuit, a synchronizing circuit/code generator and a demodulator. The base-band conversion circuit converts a received signal into a base-band signal. The synchronizing circuit/code generator detects a spread code included in the received signal to generate a plurality of spread codes in synchronization with the spread code included in the received signal. The demodulator uses the plurality of spread codes supplied by the synchronizing circuit/code generator to demodulate the base-band signal.

公开(公告)号：US06459721B1

公开(公告)日：2002-10-01

申请号：US09182004

申请日：1998-10-29

申请人： Norihiro Mochizuki ,  Katsuo Saito ,  Akira Torisawa ,  Toshihiko Myojo ,  Ichiro Kato ,  Tetsuo Kanda ,  Atsushi Takasaki ,  Kazuo Moritomo ,  Rie Suzuki

发明人： Norihiro Mochizuki ,  Katsuo Saito ,  Akira Torisawa ,  Toshihiko Myojo ,  Ichiro Kato ,  Tetsuo Kanda ,  Atsushi Takasaki ,  Kazuo Moritomo ,  Rie Suzuki

IPC分类号： H04B1500

CPC分类号： H04B1/707

摘要： A receiving apparatus includes a base-band conversion circuit, a synchronizing circuit/code generator and a demodulator. The base-band conversion circuit converts a received signal into a base-band signal. The synchronizing circuit/code generator detects a spread code included in the received signal to generate a plurality of spread codes in synchronization with the spread code included in the received signal. The demodulator uses the plurality of spread codes supplied by the synchronizing circuit/code generator to demodulate the base-band signal.

摘要翻译： 接收装置包括基带转换电路，同步电路/码发生器和解调器。 基带转换电路将接收的信号转换为基带信号。 同步电路/码发生器检测包括在接收信号中的扩展码，以与包括在接收信号中的扩展码同步地产生多个扩展码。 解调器使用由同步电路/码发生器提供的多个扩展码来解调基带信号。

公开(公告)号：US5537396A

公开(公告)日：1996-07-16

申请号：US247937

申请日：1994-05-24

申请人： Tetsuo Kanda ,  Katsuo Saito ,  Toshihiko Myojo ,  Ichiro Kato ,  Norihiro Mochizuki ,  Hidetada Nago

发明人： Tetsuo Kanda ,  Katsuo Saito ,  Toshihiko Myojo ,  Ichiro Kato ,  Norihiro Mochizuki ,  Hidetada Nago

IPC分类号： H04J13/00 ,  H04B1/7075 ,  H04J13/02

CPC分类号： H04B1/707 ,  H04B1/709

摘要： A diffusion code generating method for a code division multiplex communication by a spread spectrum system is provided. A receiving apparatus according to the above method receives the signal which was multiplexed by using a plurality of sets of diffusion codes and comprises: a generator to generate a sync code and a plurality of sets of diffusion codes other than the sync code; a correlator to obtain a correlation between a reception signal and the sync code generated from the generator; and a receiver to receive the reception signal on the basis of the plurality of sets of diffusion codes generated from the generator. The generator generates the sync code in a manner such that the cross-correlation values are set to very small values at positions near a code sync point or are enough smaller than the autocorrelation peak of the sync code or are set to very small values at both of or either one of the positions before and after the code sync point.

摘要翻译： 提供了一种扩频码生成方法，用于通过扩频系统进行码分复用通信。 根据上述方法的接收装置接收通过使用多组扩散码复用的信号，并且包括：生成器，用于生成除同步码之外的同步码和多组扩散码; 相关器，用于获得从发生器产生的接收信号和同步码之间的相关性; 以及接收器，其基于从发电机产生的多组扩散码接收接收信号。 发生器以这样的方式生成同步码，使得互相关值在码同步点附近的位置被设置为非常小的值，或者足够小于同步码的自相关峰值，或者被设置为非常小的值 或者在代码同步点之前和之后的任一个位置。

公开(公告)号：US5793794A

公开(公告)日：1998-08-11

申请号：US233244

申请日：1994-04-26

申请人： Ichiro Kato ,  Katsuo Saito ,  Toshihiko Myojo ,  Norihiro Mochizuki ,  Hidetada Nago ,  Tetsuo Kanda

发明人： Ichiro Kato ,  Katsuo Saito ,  Toshihiko Myojo ,  Norihiro Mochizuki ,  Hidetada Nago ,  Tetsuo Kanda

IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B1/7085 ,  H04J13/00 ,  H04B1/69

CPC分类号： H04B1/70712

摘要： A spread spectrum receiving apparatus comprises: a reproducing circuit to reproduce a carrier signal from a reception signal and a diffusion code; a demodulation circuit to demodulate the reception signal into a base band signal on the basis of the carrier signal reproduced by the reproducing circuit; and a judgment circuit to judge the reception data from the base band signal from the demodulation circuit. The reproducing circuit has an operation circuit to arithmetically operate the reception signal and the diffusion code and a detection circuit to detect a difference between the phases of an output of the operation circuit and an output of an oscillator. The oscillator oscillates at a carrier frequency in accordance with a phase difference detected by the detecting circuit.

摘要翻译： 扩频接收装置包括：再现电路，用于从接收信号和扩散码再现载波信号; 解调电路，用于根据由再现电路再现的载波信号将接收信号解调为基带信号; 以及判断电路，用于根据来自解调电路的基带信号判断接收数据。 再现电路具有运算电路，对接收信号和扩散码进行算术运算，检测电路检测运算电路的输出和振荡器的输出的相位差。 振荡器根据由检测电路检测的相位差以载波频率振荡。

公开(公告)号：US06625162B2

公开(公告)日：2003-09-23

申请号：US09208404

申请日：1998-12-10

申请人： Toshihiko Myojo ,  Tetsuo Kanda ,  Kazuo Moritomo

发明人： Toshihiko Myojo ,  Tetsuo Kanda ,  Kazuo Moritomo

IPC分类号： H04L12413

CPC分类号： H04W74/0816

摘要： In a communication system including plural communication apparatuses that communicate each other using a single communication path, the state of the communication path is detected for communication. If the communication path is busy, a first control method is performed for controlling access to the communication path using a back off time selected at random. A second control method secures the communication path by transmitting and receiving the predetermined signal at transmission of a signal so as to control access to the communication path. In accordance with the kind of the signal to be transmitted, the first or the second control method is selected for communication. Thus, plural communication apparatuses can perform efficient communication.

摘要翻译： 在包括使用单个通信路径相互通信的多个通信装置的通信系统中，检测通信路径的状态进行通信。 如果通信路径正忙，则执行第一控制方法，以便使用随机选择的退出时间控制对通信路径的访问。 第二控制方法通过在发送信号时发送和接收预定信号来确保通信路径，以便控制对通信路径的访问。 根据要发送的信号的种类，选择第一或第二控制方法进行通信。 因此，多个通信装置能够进行有效的通信。

公开(公告)号：US5812592A

公开(公告)日：1998-09-22

申请号：US569462

申请日：1995-12-08

申请人： Rie Suzuki ,  Toshihiko Myojo ,  Norihiro Mochizuki

发明人： Rie Suzuki ,  Toshihiko Myojo ,  Norihiro Mochizuki

IPC分类号： H04B1/707

CPC分类号： H04B1/7075 ,  H04B1/70712

摘要： A spread spectrum reception apparatus generates a local reference code and a timing signal having 1/2 the period of the reference code. Correlation calculation between a received spread spectrum signal and the local reference code is performed. Upon reception of the correlation calculation result, a peak detector detects a correlation peak signal. The rate of a code generation clock is adjusted in accordance with the phase difference between the timing signal and the correlation peak signal to perform de-spread processing of the received signal.

摘要翻译： 扩展频谱接收装置产生参考码的周期的​​+ E，fra 1/2 + EE的本地参考码和定时信号。 执行接收扩频信号和本地参考码之间的相关计算。 在接收到相关计算结果之后，峰值检测器检测相关峰值信号。 根据定时信号和相关峰值信号之间的相位差来调整代码生成时钟的速率，以执行接收信号的解扩处理。

公开(公告)号：US5917850A

公开(公告)日：1999-06-29

申请号：US561278

申请日：1995-11-21

申请人： Takao Fujita ,  Toshihiko Myojo ,  Norihiro Mochizuki ,  Tadashi Eguchi ,  Rie Suzuki

发明人： Takao Fujita ,  Toshihiko Myojo ,  Norihiro Mochizuki ,  Tadashi Eguchi ,  Rie Suzuki

IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

CPC分类号： H04B1/7075 ,  H04B1/70712 ,  H04B2201/70707

摘要： A spread spectrum receiving apparatus is constructed by a generator for generating a reference clock, a phase shift circuit for shifting the phase of the reference clock generated by the generator in accordance with a code timing in a reception signal and the reference clock, and a de-spreading circuit for de-spreading the reception signal in accordance with the reference clock whose phase is shifted by the phase shift circuit. The de-spreading circuit generates a code for de-spreading in accordance with the phase shifted reference clock. The phase shift circuit has a calculator for calculating a phase shift amount so as to synchronize the code timing in the reception signal with the code for reception in accordance with a deviation between the code timing in the reception signal and the reference clock.

摘要翻译： 扩频接收装置由用于产生参考时钟的发生器构成，相移电路用于根据接收信号和参考时钟中的码定时移位由发生器产生的参考时钟的相位， 扩展电路，用于根据相移由相移电路的参考时钟来解扩接收信号。 解扩电路根据相移参考时钟产生用于去扩展的码。 相移电路具有用于计算相移量的计算器，以便根据接收信号中的码定时与参考时钟之间的偏差来同步接收信号中的码定时与接收码。

公开(公告)号：US06122295A

公开(公告)日：2000-09-19

申请号：US654882

申请日：1996-05-29

申请人： Ichiro Kato ,  Toshihiko Myojo ,  Rie Suzuki

发明人： Ichiro Kato ,  Toshihiko Myojo ,  Rie Suzuki

IPC分类号： H04B7/005 ,  H04J13/00 ,  H04J13/02

CPC分类号： H04W52/343 ,  H04W52/346

摘要： A multiple communicating apparatus has a multiple communicating unit for communicating data through a plurality of channels and a control circuit for controlling the multiple communicating unit in a manner such that the transmission electric power of each channel is inversely proportional to the number of channels which are used by the multiple communicating unit. The control circuit includes a channel control circuit for controlling the number of channels which are used by the multiple communicating unit in accordance with a transmission speed. The multiple communicating unit includes a diffusion circuit for diffusing parallel data by a plurality of diffusion code series. The multiple communicating unit transmits a multiple number for a preamble period of time provided for the reception side to synchronize the plurality of code series which are used for a code division multiple with the transmission side.

摘要翻译： 多个通信装置具有用于通过多个信道传送数据的多个通信单元和用于控制多个通信单元的控制电路，使得每个信道的传输电功率与所使用的信道数量成反比 由多个通信单元。 控制电路包括用于根据传输速度控制多个通信单元使用的信道数目的信道控制电路。 多个通信单元包括用于通过多个扩散码序列扩散并行数据的扩散电路。 多个通信单元发送针对接收侧提供的前导码周期的多个号码，以将用于码分多路复用的多个码序列与发送侧进行同步。

公开(公告)号：US06616352B1

公开(公告)日：2003-09-09

申请号：US09586883

申请日：2000-06-05

申请人： Junji Shigeta ,  Toshihiko Myojo ,  Yasuhiro Takahashi ,  Kazuo Moritomo

发明人： Junji Shigeta ,  Toshihiko Myojo ,  Yasuhiro Takahashi ,  Kazuo Moritomo

IPC分类号： H04B1000

CPC分类号： H04B10/1125

摘要： A bidirectional optical space transmission system is made up of a pair of optical transmission apparatus. Each optical transmission apparatus comprises a signal generating circuit for generating a pilot signal, a multiplexing section for multiplexing the pilot signal and a main signal to be transmitted, an electrooptic converter section for emitting an optical signal on the basis of the signal produced by the multiplexing process, a light receiving element for receiving an optical signal transmitted from the partner optical transmission apparatus and detecting a pilot signal contained therein, and a demodulation circuit for demodulating the pilot signal detected by the light receiving element. Pilot signals multiplexed with main signals to be transmitted through the bidirectional optical transmission system are subjected to spreading modulation and demodulated for spreading by the demodulation circuit.

摘要翻译： 双向光学空间传输系统由一对光传输装置组成。 每个光传输装置包括用于产生导频信号的信号发生电路，用于复用导频信号的复用部分和要传输的主信号，基于由多路复用产生的信号发射光信号的电光转换器部分 处理光接收元件，用于接收从伙伴光传输装置发送的光信号并检测其中包含的导频信号;以及解调电路，用于解调由光接收元件检测的导频信号。 对通过双向光传输系统发送的主信号进行多路复用的导频信号经过扩展调制，并由解调电路进行解调以进行扩频。

公开(公告)号：US08717444B2

公开(公告)日：2014-05-06

申请号：US10992375

申请日：2004-11-18

申请人： Atsushi Takasaki ,  Toshihiko Myojo

发明人： Atsushi Takasaki ,  Toshihiko Myojo

IPC分类号： H04N5/225 ,  H04N5/232

CPC分类号： H04N1/00326 ,  H04N1/00127 ,  H04N1/00204 ,  H04N1/00278 ,  H04N2201/0015 ,  H04N2201/0027 ,  H04N2201/0041 ,  H04N2201/0044 ,  H04N2201/0055 ,  H04N2201/0084 ,  H04N2201/0087 ,  H04W4/00 ,  H04W28/14 ,  H04W40/246

摘要： A remote control device searches for an image data storing device and a printing device that can be used by a user, and notifies an image taking device of device information obtained as a result of this search. The image taking device searches for a device having a predetermined function in response to an instruction from the remote control device, and if a device included in the device information notified by the remote control device is found, transfers an image to the found device. Alternatively, the image taking device connects to a device notified by the remote control device, and sends the image to the notified device to perform printing or storing thereon.

摘要翻译： 远程控制装置搜索可由用户使用的图像数据存储装置和打印装置，并且向摄像装置通知作为该搜索结果获得的装置信息。 图像摄取装置响应于来自遥控装置的指令搜索具有预定功能的装置，并且如果发现包括在由遥控装置通知的装置信息中的装置，则将图像传送到找到的装置。 或者，图像摄取装置连接到由遥控装置通知的装置，并将图像发送到通知装置，以对其进行打印或存储。