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1.发明授权
公开(公告)号：US4425642A
公开(公告)日：1984-01-10
申请号：US337957
申请日：1982-01-08
申请人： Donald W. Moses , Charles Hustig , C. Ray Ballard
发明人： Donald W. Moses , Charles Hustig , C. Ray Ballard
CPC分类号： H04J1/14 , G10L19/018 , H04J13/00 , H04M11/062
摘要： A co-channel communications system is disclosed which permits a digital data signal to be simultaneously transmitted with a communications medium signal such as telephone voice or television video. The data signal or signals are converted into very low multifrequency signals consisting of fundamental frequencies and harmonics which span the communications bandwidth. Because a number of frequencies are used for each data signal, the signal level of the data signals can be greatly suppressed relative to the communications medium signal to a level such that there is no perceptible degradation of the telephone voice or television video. Synchronous detectors for each frequency transmitted, including harmonic frequencies, are utilized to recapture and regenerate the data signals transmitted.
摘要翻译： 公开了一种同信道通信系统，其允许使用诸如电话语音或电视视频的通信媒体信号同时发送数字数据信号。 数据信号或信号被转换成包括基频和谐波的非常低的多频信号，它们跨越通信带宽。 由于对于每个数据信号使用多个频率，所以可以相对于通信媒体信号将数据信号的信号电平极大地抑制到使得电话语音或电视视频没有可察觉的劣化。 用于发送的每个频率（包括谐波频率）的同步检测器用于重新捕获并再生传输的数据信号。
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公开(公告)号：US4724435A
公开(公告)日：1988-02-09
申请号：US796052
申请日：1985-11-06
申请人： Donald W. Moses , Robert Moses , James W. Kinne , Charles H. Hustig , Wayne P. Olson , Alan M. Doberstein , Robert S. Bradford
发明人： Donald W. Moses , Robert Moses , James W. Kinne , Charles H. Hustig , Wayne P. Olson , Alan M. Doberstein , Robert S. Bradford
CPC分类号： H02J13/0072 , H04M11/002 , Y02E60/7846 , Y04S40/125
摘要： The data telemetry system disclosed is a complete data communications systems suitable for use by utilities such as electric companies, gas companies and water companies which can be used for meter reading and load management at individual subscribers premises. Elements of the system can also be used as a power load carrier in a premise specific local area network (LAN). With the system is disclosed, all 10,000 subscribers per exchange can be serviced. It will be understood that data can be multiplexed between a central office location and remote subscribers for any suitable purpose with the data system as disclosed. A packet switching structure is disclosed having eight to thirty-two bytes in the data message. This packet is routed between the utility and remote subscriber with routing headers being added and deleted as required by the network modules. Each successive layer of the multiplexing and switching hierarchy submultiplies the aggregate 10,000 channel capacity into fewer channels. Both time and space division switching and multiplexing are used.
摘要翻译： 所公开的数据遥测系统是适用于诸如电力公司，燃气公司和水公司的公用事业的完整数据通信系统，可用于各个用户场所的抄表和负载管理。 系统的元件也可以用作内部特定局域网（LAN）中的电力负载运营商。 通过系统披露，每个交换机可以维护10,000个用户。 应当理解，在所公开的数据系统的任何适当目的下，可以在中心局位置和远程用户之间复用数据。 公开了一种在数据消息中具有八到三十二个字节的分组交换结构。 该分组在实用程序和远程用户之间路由，并且根据网络模块的要求添加和删除路由头。 复合和交换层级的每个连续层将聚合的10,000个信道容量乘以较少的信道。 使用时分和空分切换和多路复用。
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公开(公告)号：US4672605A
公开(公告)日：1987-06-09
申请号：US591509
申请日：1984-03-20
CPC分类号： H04L1/0071 , H03M5/12 , H04B1/69 , H04L1/004 , H04M11/062 , Y02B60/36
摘要： A high speed and relatively error free communications system is disclosed which enables the high speed transmission of data at a 19.2 kilobit per second rate. The data is transmitted over the same communications medium as voice transmissions, the data transmission being virtually imperceptible to the user of the analog telephone system. Connection to and from the data terminals is made through an RS232C interface. A spread spectrum technique is utilized which "whitens" the signals of the data terminal regardless of whether the terminal is idle, transmitting or receiving data. Virtual error free transmission is achieved by interleaving bits, so that noise does not destroy the data, and by error detection and correction techniques which assure that the data, as received, is identical to that transmitted. By using a variable pseudo random code, privacy of data communications are enhanced and cross-talk is substantially eliminated. The resulting system is one that can use a single twisted pair wire for transmission and is capable of transmitting data at a high rate of speed while leaving the analog voice transmission resident and unaffected on the line.
摘要翻译： 公开了一种高速且相对无差错的通信系统，其能够以19.2千比特/秒速率高速传输数据。 数据通过与语音传输相同的通信介质进行传输，数据传输对于模拟电话系统的用户实际上是不可察觉的。 通过RS232C接口连接数据终端。 利用扩频技术，无论终端是空闲，发送还是接收数据，都会使数据终端的信号“白化”。 通过交错比特来实现虚拟无错误传输，使得噪声不破坏数据，并且通过错误检测和校正技术确保所接收的数据与发送的数据相同。 通过使用可变伪随机码，数据通信的隐私被增强，并且基本上消除了串扰。 所得到的系统是可以使用单根双绞线进行传输的系统，并且能够以高速率传输数据，同时使模拟语音传输驻留在线路上并且不受影响。
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公开(公告)号：US4677686A
公开(公告)日：1987-06-30
申请号：US503321
申请日：1983-06-10
申请人： Charles H. Hustig , Jeffrey L. Ward
发明人： Charles H. Hustig , Jeffrey L. Ward
CPC分类号： H04L12/2801 , H04H60/80 , H04H60/97 , H04L5/02
摘要： A communications system which enables enhanced services to be provided over cable TV systems. The design of the system is such that amplification is not required. Therefore, two-way transmission is possible on the low band of "two-way capable" cable systems and intermediate power failures do not affect transmission.Transmission of data takes place in the low band frequency range of five to thirty megahertz. The system design is such that it can withstand over a hundred dB loss between the remote terminal and the head-end. Carrier frequencies, when received, are interleaved for purposes of decoding and microprocessor based controls are used for automatic gain control and error correction.In a preferred embodiment of the invention, two thousand five hundred carriers, each transmitting eight digital data channels of information can be simultaneously transmitted from remote terminals without any effect whatsoever on the TV signals being transmitted at the high band frequencies. The resulting system is a very economical and dependable method to achieve passive transmission of data over cable TV systems.
摘要翻译： 一种通过有线电视系统提供增强业务的通信系统。 该系统的设计使得不需要放大。 因此，“双向”电缆系统的低频带可以进行双向传输，中间电源故障不影响传输。 数据的传输发生在五到三十兆赫兹的低频范围内。 系统设计使得它能承受远程终端和前端之间的一百dB以上的损耗。 载波频率在接收时被交织用于解码，基于微处理器的控制用于自动增益控制和纠错。 在本发明的一个优选实施例中，每个发送八个数字数字信息信道的两千五百个载波可以从远程终端同时发送，而不会对在高频带频率上传输的电视信号产生任何影响。 所得到的系统是通过有线电视系统实现无源数据传输的非常经济和可靠的方法。
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公开(公告)号：US4433212A
公开(公告)日：1984-02-21
申请号：US390183
申请日：1982-06-21
申请人： Donald W. Moses , Charles Hustig , C. Ray Ballard
发明人： Donald W. Moses , Charles Hustig , C. Ray Ballard
CPC分类号： H04M11/066 , H04M11/062
摘要： A circuit for coupling digital or analog data signals to a telephone line. A direct coupled transistorized circuit is disclosed having three different impedance conditions: on-hook, off-hook, and loop-test. Consequently, data can be transmitted regardless of the on-hook or off-hook status of the associated telephone sets and regardless of whether or not the telephone sets are in use. In addition, data transmission can range over a frequency spectrum of approximately d-c to frequencies in the data-over-voice range. Because of the variable bridging impedance, the drive impedance is not too low during on-hook ringing and the circuit need not be disconnected during ringing or testing.
摘要翻译： 用于将数字或模拟数据信号耦合到电话线的电路。 公开了具有三个不同阻抗条件的直接耦合晶体管电路：挂机，摘机和环路测试。 因此，无论电话机的挂机或摘机状态如何，无论电话机是否正在使用，都可以发送数据。 此外，数据传输可以在大约d-c的频谱范围内超过语音数据范围内的频率。 由于可变桥接阻抗，挂机振铃时驱动阻抗不会太低，并且在振铃或测试期间不需要断开电路。
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公开(公告)号：US4425661A
公开(公告)日：1984-01-10
申请号：US299173
申请日：1981-09-03
申请人： Donald W. Moses , Charles Hustig , C. Ray Ballard
发明人： Donald W. Moses , Charles Hustig , C. Ray Ballard
CPC分类号： H04J1/14 , H04B1/713 , H04M11/04 , H04M11/062
摘要： A communications system capable of simultaneously transmitting voice and data information. The spectral energy of the data signal is smeared by spreading it in a spectrum with energy packed in the lower frequency range under the conventional voice signal frequency in a manner which complements the standard C-message weighting curve. The use of the spread spectrum technique also eliminates thumping at the data rate since the harmonics that produce thumping are also spread throughout the bandwidth.
摘要翻译： 能够同时发送语音和数据信息的通信系统。 数据信号的频谱能量通过以与补充标准C-消息加权曲线的方式在常规语音信号频率下以较低频率范围包装的能量在频谱中展开而被模糊。 扩频技术的使用也消除了数据速率的颠簸，因为产生颠簸的谐波也在整个带宽中传播。
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