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91. 发明授权

US06891860B2 Method and apparatus for establishing multiple bandwidth-limited connections for a communication device 有权
标题翻译：用于为通信设备建立多个带宽限制连接的方法和装置
公开(公告)号：US06891860B2
公开(公告)日：2005-05-10
申请号：US10224331
申请日：2002-08-21
申请人： Charles W. Gautney , Nazmul Bin Idris
发明人： Charles W. Gautney , Nazmul Bin Idris
IPC分类号： H04L29/06 , H04W12/06 , H04W12/08 , H04W76/06 , H04W80/00 , H04J1/02
CPC分类号： H04L67/14 , H04L63/08 , H04L67/146 , H04L69/14 , H04W12/06 , H04W76/30 , H04W80/04
摘要： A system and method is described for communicating with a communication device. An uplink connection uniquely associated with the communication device and uniquely associated with an uplink-session identifier is established. The uplink connection is a wireless connection. A downlink connection uniquely associated with the communication device and uniquely associated with a downlink-session identifier is established. The downlink connection is a wireless connection. A message from the communication device is received over the uplink connection within a time period. A message is sent to the communication device over the downlink connection within the time period.
摘要翻译：描述了与通信设备进行通信的系统和方法。建立与通信设备唯一相关联并且与上行链路会话标识符唯一相关联的上行链路连接。上行链路连接是无线连接。建立与通信设备唯一相关联并且与下行链路会话标识符唯一相关联的下行链路连接。下行链路连接是无线连接。在一段时间内通过上行链路接收来自通信设备的消息。在该时间段内通过下行链路连接向消息传送通信装置。

92. 发明申请

US20050018785A1 Communication system 失效
标题翻译：通讯系统
公开(公告)号：US20050018785A1
公开(公告)日：2005-01-27
申请号：US10695780
申请日：2003-10-30
申请人： Mitsuaki Oshima
发明人： Mitsuaki Oshima
IPC分类号： H04J11/00 , G11B5/09 , H03M13/25 , H03M13/35 , H04B14/04 , H04H20/00 , H04H20/74 , H04J1/02 , H04J3/00 , H04L1/00 , H04L27/00 , H04L27/02 , H04L27/04 , H04L27/06 , H04L27/10 , H04L27/18 , H04L27/22 , H04L27/26 , H04L27/34 , H04L27/36 , H04L27/38 , H04N5/38 , H04N5/40 , H04N5/44 , H04N5/455 , H04N5/46 , H04N5/78 , H04N5/7826 , H04N5/92 , H04N7/015 , H04N7/04 , H04N7/045 , H04N7/06 , H04N7/08 , H04N7/081 , H04N7/20 , H04N7/24 , H04N11/04 , H04N11/24 , H04N21/2343 , H04N21/2383 , H04N21/438 , H04N21/4402 , H04N21/442 , H04N21/4425 , H04N21/462 , H04N21/63 , H04N21/647 , H04L5/12
CPC分类号： H04L1/0057 , H03M13/23 , H03M13/253 , H03M13/256 , H03M13/2936 , H03M13/35 , H03M13/356 , H03M13/6538 , H04L1/0041 , H04L1/0045 , H04L1/0054 , H04L1/0058 , H04L1/0059 , H04L1/006 , H04L1/0065 , H04L1/007 , H04L5/0007 , H04L5/0046 , H04L27/02 , H04L27/04 , H04L27/183 , H04L27/2602 , H04L27/2604 , H04L27/2627 , H04L27/2649 , H04L27/3405 , H04L27/3488 , H04L27/36 , H04L27/38 , H04L27/3854 , H04L2001/0098 , H04L2027/0036 , H04L2027/0053 , H04L2027/0067 , H04N5/4401 , H04N5/455 , H04N7/015 , H04N7/24 , H04N11/004 , H04N19/30 , H04N19/37 , H04N19/60 , H04N19/63 , H04N21/234327 , H04N21/2383 , H04N21/4382 , H04N21/4383 , H04N21/440272 , H04N21/44209 , H04N21/4425 , H04N21/4621 , H04N21/631
摘要： At the transmitter side, carrier waves are modulated according to an input signal for producing relevant signal points in a signal space diagram. The input signal is divided into, two, first and second, data streams. The signal points are divided into signal point groups to which data of the first data stream are assigned. Also, data of the second data stream are assigned to the signal points of each signal point group. A difference in the transmission error rate between first and second data streams is developed by shifting the signal points to other positions in the space diagram. At the receiver side, the first and/or second data streams can be reconstructed from a received signal. In TV broadcast service, a TV signal is divided by a transmitter into, low and high, frequency band components which are designated as a first and a second data stream respectively. Upon receiving the TV signal, a receiver can reproduce only the low frequency band component or both the low and high frequency band components, depending on its capability.
摘要翻译：在发射机侧，根据用于在信号空间图中产生相关信号点的输入信号调制载波。输入信号被分成两个，第一个和第二个数据流。信号点被划分为分配了第一数据流的数据的信号点组。此外，第二数据流的数据被分配给每个信号点组的信号点。通过将信号点移动到空间图中的其他位置来开发第一和第二数据流之间的传输错误率的差异。在接收机侧，可以从接收到的信号重建第一和/或第二数据流。在电视广播业务中，电视信号由发射机分为低频和高频分量，分别被指定为第一和第二数据流。在接收到TV信号时，接收机可以仅根据其能力再现低频带分量或低频和高频分量两者。

93. 发明申请

US20050013344A1 Wideband quadrature generation technique requiring only narrowband components and method thereof 有权
标题翻译：宽带正交生成技术仅需要窄带分量及其方法
公开(公告)号：US20050013344A1
公开(公告)日：2005-01-20
申请号：US10889178
申请日：2004-07-13
申请人： Mohsen Abdellaoui , Yong-Suk Kim , Wan-jin Kim , Dan Meacham , Woo-Kyung Lee
发明人： Mohsen Abdellaoui , Yong-Suk Kim , Wan-jin Kim , Dan Meacham , Woo-Kyung Lee
IPC分类号： H04L27/02 , H03C3/40 , H03D3/00 , H04B1/69 , H04J1/02 , H04L27/20
CPC分类号： H03D3/007 , H03C3/403 , H04B1/71632 , H04B1/71635 , H04B1/7174
摘要： A method for reference signal generating in an ultra wideband (UWB) communication system which sends out and receives data by using at least two reference signals of predetermined frequencies. A first signal group, which comprises a local oscillation (LO) signal and a signal at a predetermined phase difference with respect to the LO signal, is generated. One among at least two intermediate frequency (IF) signals is selected for the adjustment of the frequency of the LO signals, and a second signal group, which comprises the selected IF signal and a signal at a predetermined phase difference with respect to the selected IF signal, is generated. Two mixed signals are generated from the first and the second signal groups, the mixed signals being mixed without overlap, and a reference signal is generated by adding the two generated signals.
摘要翻译：一种用于在超宽带（UWB）通信系统中产生参考信号的方法，其通过使用至少两个预定频率的参考信号发送和接收数据。产生包括本地振荡（LO）信号和相对于LO信号的预定相位差的信号的第一信号组。选择至少两个中频（IF）信号中的一个用于调整LO信号的频率，以及第二信号组，其包括所选择的IF信号和相对于所选IF的预定相位差的信号信号，被产生。从第一和第二信号组产生两个混合信号，混合信号被混合而不重叠，并且通过将两个产生的信号相加来产生参考信号。

94. 发明授权

US5787079A Method and apparatus for creating multiple subchannels in a single two-way radio channel 失效
标题翻译：用于在单个双向无线电信道中创建多个子信道的方法和装置
公开(公告)号：US5787079A
公开(公告)日：1998-07-28
申请号：US636549
申请日：1996-04-23
申请人： Andrew Bateman , Peter B. Kenington , Richard M. Bennett
发明人： Andrew Bateman , Peter B. Kenington , Richard M. Bennett
IPC分类号： H04B1/16 , H04B1/40 , H04J1/02
CPC分类号： H04B1/40 , H04B1/1646
摘要： A system for creating multiple subchannels in a single two-way radio channel and a power control system for a mobile radio transmitter are described. Each subchannel in the system is capable of carrying voice or data. Each subchannel is split into an upper and a lower band with the upper band placed in a particular frequency range above the center of the channel and the lower band is placed in a corresponding frequency range below the center of the channel. Either one or two pilot tones placed at or adjacent to the center of the channel are used to provide a reference for all of the subchannels to allow for correction of distortions when the signal is received. The system includes base station with a transmitter and receiver and a plurality of mobile units each with a transmitter and a receiver. The base station transmits a signal which is the sum of all the subchannels. The mobile unit receives the signal, separates and processes the particular subchannel for that mobile unit. The mobile unit transmits only the desired subchannel or subchannels with a pilot tone located adjacent to one of the bands of the subchannel. Two or more subchannels can be used in conjunction to achieve faster data rates or higher quality voice transmissions. The mobile transmitter power control system for the mobile transmitter allows the mobile unit to monitor the pilot tone from the base station and to calculate a transmission power based on a desired signal strength. Additionally, the transmission power may be altered during transmission as commanded by the base station, or if the mobile unit measures a change in the strength of the pilot tone from the base station.
摘要翻译：描述了用于在单个双向无线电信道中创建多个子信道的系统和用于移动无线电发射机的功率控制系统。系统中的每个子通道都能承载语音或数据。每个子信道被分成上和下频段，上频带放置在通道中心以上的特定频率范围内，下频带放置在通道中心以下的相应频率范围内。放置在通道中心或邻近通道的一个或两个导频音被用于为所有的子信道提供参考，以允许在接收信号时校正失真。该系统包括具有发射机和接收机的基站以及各自具有发射机和接收机的多个移动单元。基站发送作为所有子信道之和的信号。移动单元接收信号，分离和处理该移动单元的特定子信道。移动单元仅发送具有与子信道中的一个频带相邻的导频音的所需子信道或子信道。可以结合使用两个或更多个子信道来实现更快的数据速率或更高质量的语音传输。用于移动发射机的移动发射机功率控制系统允许移动单元监视来自基站的导频音，并且基于期望的信号强度来计算发射功率。此外，发送功率可以在由基站指示的传输期间改变，或者如果移动单元测量来自基站的导频音强度的变化。

95. 发明授权

US5537398A Apparatus for multi-rate simulcast communications 失效
标题翻译：多速率联播通讯装置
公开(公告)号：US5537398A
公开(公告)日：1996-07-16
申请号：US439839
申请日：1995-05-12
申请人： Kazimierz Siwiak
发明人： Kazimierz Siwiak
IPC分类号： H04B7/00 , H04H3/00 , H04H20/33 , H04H20/67 , H04H20/86 , H04H60/51 , H04J4/00 , H04L27/26 , H04W88/18 , H04J1/02 , H04J11/00
CPC分类号： H04H20/33 , H04H20/67 , H04H20/86 , H04J4/00 , H04L27/2601 , H04W88/187 , H04H2201/70 , H04H60/51
摘要： A messaging system (500) for transmitting a message to a subscriber unit (312). The messaging system (500) includes a plurality of geographically distributed messaging transmitters (302-310), each transmitter designed to transmit in a first modulation format, such as FM, during a first transmission portion (102) including address information; and in a second modulation format, such as OFDM, during a second transmission portion (104) including message data (110) transmitted in frames. The address information includes message characterization information (108) defining a predetermined frame rate. The second transmission portion (104) includes message data (110) transmitted in frames representing a time sequence of N data bits at the predetermined frame rate and provides a plurality of carrier frequencies related to a frequency domain representation of the time sequence of data bits. The predetermined frame rate numerically matches the predetermined symbol rate. The subscriber unit (312) includes circuitry for receiving and demodulating both modulation formats.
摘要翻译：一种用于向订户单元（312）发送消息的消息系统（500）。消息系统（500）包括多个地理上分布的消息收发发射机（302-310），每个发射机设计成在包括地址信息的第一传输部分（102）期间以诸如FM的第一调制格式发射; 以及在包括以帧发送的消息数据（110）的第二传输部分（104）期间以诸如OFDM的第二调制格式。地址信息包括定义预定帧速率的消息表征信息（108）。第二传输部分（104）包括以表示以预定帧速率的N个数据比特的时间序列的帧发送的消息数据（110），并且提供与数据比特的时间序列的频域表示相关的多个载波频率。预定帧速率与预定符号率数值匹配。用户单元（312）包括用于接收和解调两种调制格式的电路。

96. 发明授权

US5533023A Practical means for dynamic allocation of individual demodulators to a multiplicity of received RF signals 失效
标题翻译：将各个解调器动态分配给多个接收的RF信号的实际手段
公开(公告)号：US5533023A
公开(公告)日：1996-07-02
申请号：US358157
申请日：1994-12-16
申请人： John Ohlson , William Slivkoff
发明人： John Ohlson , William Slivkoff
IPC分类号： H04B7/185 , H04J1/02
CPC分类号： H04B7/18539
摘要： The hub station of a network receives a multiplicity of signals in different frequency channels and possibly on different antennas. The individual signals to be demodulated may coexist in a radio frequency channel using FDMA, TDMA, or CDMA or other signal types or combinations thereof. The received frequency band is divided into subbands which are all translated to baseband and distributed to the backplane of one or more demodulator chassis (each of which contains many demodulators). In this way, any demodulator may be connected to any signal. Relatively large segments of the input bandwidth are translated to baseband. These segments are then digitized and further band segmentation is performed digitally. In this way, the digitation and switching functions are almost all done with digital hardware. This affords considerable advantage in hardware cost, size, and reliability. The sharing of common equipment for translation to baseband affords major reductions in quantity of such translation equipment compared to conventional systems where each demodulator has its own associated translation equipment. This provides great advantages in cost, size and reliability. The demodulator outputs are decoded using bulk processing. This leads to considerable hardware savings with no reduction in demodulator allocation flexibility. The use of bulk processing allows the memory 31 associated with the decoder 30 to be located in a separate low-cost standards memory rather than in the more expensive special integrated circuit memory and this leads to further cost savings.
摘要翻译：网络的中心站在不同的频率信道中并且可能在不同的天线上接收多个信号。要解调的各个信号可以使用FDMA，TDMA或CDMA或其他信号类型或其组合在无线电频道中共存。所接收的频带被划分为子带，它们全部转换为基带并分配给一个或多个解调器机箱（每个都包含许多解调器）的背板。以这种方式，任何解调器都可以连接到任何信号。相对较大的输入带宽段转换为基带。然后将这些片段数字化，并进一步进行数字频带分割。通过这种方式，数字和切换功能几乎全部由数字硬件完成。这在硬件成本，尺寸和可靠性方面具有相当大的优势。与传统系统相比，共转换到基带的共用设备可以大大降低这种翻译设备的数量，而传统系统中每个解调器都有自己的相关翻译设备。这在成本，尺寸和可靠性方面提供了巨大的优势。解调器输出使用批处理进行解码。这导致相当大的硬件节省，而不降低解调器分配的灵活性。使用批量处理允许与解码器30相关联的存储器31位于单独的低成本标准存储器中，而不是在更昂贵的专用集成电路存储器中，并且这导致进一步的成本节省。

97. 发明授权

US5495432A Apparatus and method for sampling rate conversion 失效
标题翻译：采样率转换的装置和方法
公开(公告)号：US5495432A
公开(公告)日：1996-02-27
申请号：US177008
申请日：1994-01-03
申请人： Jyh-Chern Ho
发明人： Jyh-Chern Ho
IPC分类号： G06F17/14 , G06F17/17 , H03H17/06 , H04B1/66 , H04J1/02 , H04J3/22
CPC分类号： H03H17/0642 , G06F17/141 , G06F17/17
摘要： The present invention teaches a data processing system capable of performing a sampling frequency conversion. The data processing system includes a data receiving means for receiving a plurality of input data sampled at a first frequency. The data processing system further includes a discrete transforming means for performing a discrete transform on the input data at the first sampled frequency for transforming the input data to a discrete function in a second-variable-domain at the first sampling frequency. The data processing system further includes a convoluted inverse transforming means for inversely transforming the discrete function in a second-variable-domain back to the time domain at a second sampling frequency for converting the input data to a set corresponding data sampled at the second sampling frequency.
摘要翻译：本发明教导了能够执行采样频率转换的数据处理系统。数据处理系统包括用于接收以第一频率采样的多个输入数据的数据接收装置。数据处理系统还包括离散变换装置，用于以第一采样频率对输入数据执行离散变换，用于将第一采样频率的输入数据变换为第二变量域中的离散函数。数据处理系统还包括一个卷积逆变换装置，用于以第二采样频率将第二可变域中的离散函数反向变换到时域，用于将输入数据转换成以第二采样频率采样的一组相应数据。

98. 发明授权

US5345437A System for controlling frequency multiplexing modems 失效
标题翻译：用于控制频率复用调制解调器的系统
公开(公告)号：US5345437A
公开(公告)日：1994-09-06
申请号：US59052
申请日：1993-05-07
申请人： Tohru Ogawa
发明人： Tohru Ogawa
IPC分类号： H04J1/02 , H04J3/06 , H04L5/06 , H04L27/00 , H04J1/14 , H04B1/38
CPC分类号： H04L5/06 , H04L7/0008
摘要： A frequency multiplexing control system includes a first modem unit connected to a transmission line, and a second modem unit connected to the transmission line. The first and second modem units communicate with each other via a plurality of primary channels and a secondary channel. The primary and secondary channels have different frequency bands. A plurality of signal detection units are respectively provided in the first and second modem units, to detect an abnormal primary channel and send to the second and first modem units, information concerning the abnormal primary channel via the secondary channel. A plurality of disabling units are respectively provided in the first and second modem units, to disable the abnormal primary channel in response to the received information and to send a training signal for recovering the abnormal primary channel to the transmission line.
摘要翻译：频率复用控制系统包括连接到传输线的第一调制解调器单元和连接到传输线的第二调制解调器单元。第一和第二调制解调器单元经由多个主要信道和次要信道相互通信。主要和次要信道具有不同的频带。多个信号检测单元分别设置在第一和第二调制解调器单元中，以检测异常主信道，并且经由次信道向第二和第一调制解调器单元发送关于异常主信道的信息。多个禁用单元分别设置在第一和第二调制解调器单元中，以响应于所接收的信息来禁用异常主信道，并且向传输线发送用于恢复异常主信道的训练信号。

99. 发明授权

US5303229A Optical network unit 失效
标题翻译：光网络单元
公开(公告)号：US5303229A
公开(公告)日：1994-04-12
申请号：US738327
申请日：1991-07-31
申请人： Andrew L. Withers , Joseph E. Sutherland , Richard M. Czerwiec , William C. Meador , Larry W. Burton
发明人： Andrew L. Withers , Joseph E. Sutherland , Richard M. Czerwiec , William C. Meador , Larry W. Burton
IPC分类号： H04B10/272 , H04J14/02 , H04N7/14 , H04N7/22 , H04Q11/00 , H04Q11/04 , H04J1/02
CPC分类号： H04J14/0298 , H04B10/272 , H04N7/148 , H04N7/22 , H04Q11/0062 , H04Q11/0066 , H04Q11/0067 , H04Q11/0071 , H04Q2011/0041 , H04Q2011/0083 , Y10S370/906
摘要： In an optical fiber telecommunications network, an optical network unit is provided in the subscriber neighborhood for terminating the optical fiber transmission line and for providing electrical signals over metallic lines to the subscribers. The unit functions to convert the optical signal to an electrical signal and demultiplex the electrical signal to divide out baseband telephony signals from broadband video channels. The electrical signals are further demultiplexed and distributed to line cards serving each subscriber, while the broadband video channels are demultiplexed and provided to subscribers that have requested specific video channels. The system includes a test unit for performing metallic tests and also a means to gather subscriber channel requests to form a video control channel which is transmitted to a remote terminal via a baseband telephony channel.
摘要翻译：在光纤通信网络中，在用户邻域提供光网络单元，用于终止光纤传输线，并且通过金属线路向用户提供电信号。该单元用于将光信号转换为电信号，并将电信号解复用以从宽带视频信道中分离基带电话信号。电信号进一步解复用并分配给为每个用户服务的线卡，而宽带视频信道被解复用并提供给已经请求特定视频信道的用户。该系统包括用于执行金属测试的测试单元，以及收集用户信道请求以形成经由基带电话信道被发送到远程终端的视频控制信道的手段。

100. 发明授权

US4809264A Collision signal detection system 失效
标题翻译：碰撞信号检测系统
公开(公告)号：US4809264A
公开(公告)日：1989-02-28
申请号：US83705
申请日：1987-08-07
申请人： Menachem Abraham , Yoseph Linde , Gordon C. Saussy
发明人： Menachem Abraham , Yoseph Linde , Gordon C. Saussy
IPC分类号： H04L12/28 , H04L12/413 , H04J1/02
CPC分类号： H04L12/403 , H04L12/2801 , H04L12/413
摘要： A collision signal detection system for shared, multi-user, frequency-division-multiplexed transmission media includes a plurality of listening stations connected to the shared, multi-user, frequency-division-multiplexed transmission media. The listening stations receive and transmit signals including data signals within a databand. A collision signal means is associated with each of the plurality of listening stations for sending a collision enforcement signal from one of the plurality of listening stations to the other ones of the plurality of stations after a data collision has been detected at the first station, the collision enforcement signal having a frequency within the data band. A central station is provided with an input connected with the output of each of the listening stations and an output connected with the input of each of the listening stations with all signals passing through the central station. Signal detection means is provided in the central station for receiving an input signal and for detecting the collision enforcement signal.
摘要翻译：用于共享的，多用户的频分复用传输介质的冲突信号检测系统包括连接到共享的，多用户的频分复用的传输介质的多个监听站。收听台接收和发送包括数据库中数据信号的信号。碰撞信号装置与多个监听站中的每一个相关联，用于在已经在第一站检测到数据冲突之后，将多个监听站中的一个监听站发送到多个站中的另一个站点的冲突执行信号，碰撞执行信号具有数据频带内的频率。中央站设置有与每个监听站的输出相连的输入端和与每个监听站的输入端相连的输出，所有信号都通过中央站。信号检测装置设置在中心站中，用于接收输入信号并检测碰撞执行信号。

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