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21. 发明授权

US1734038A Electrical transmission of energy 失效
标题翻译：电能传输
公开(公告)号：US1734038A
公开(公告)日：1929-11-05
申请号：US24957218
申请日：1918-08-12
申请人： AMERICAN TELEPHONE & TELEGRAPH
发明人： LUCIEN LEVY
IPC分类号： H04B14/08
CPC分类号： H04B14/08

22. 发明授权

US1513707A Transmission and receiving system 失效
标题翻译：传输和接收系统
公开(公告)号：US1513707A
公开(公告)日：1924-10-28
申请号：US65290023
申请日：1923-07-21
申请人： HAMMOND JR JOHN HAYS
发明人： HAMMOND JR JOHN HAYS
IPC分类号： H04B14/08
CPC分类号： H04B14/08

23. 发明授权

US1491776A Selective-wave transmission system 失效
标题翻译：选择波传输系统
公开(公告)号：US1491776A
公开(公告)日：1924-04-22
申请号：US42043920
申请日：1920-10-29
申请人： HAMMOND JR JOHN HAYS
发明人： HAMMOND JR JOHN HAYS
IPC分类号： H04B14/08
CPC分类号： H04B14/08

24. 发明授权

US11184200B2 Transpositional modulation 有权
公开(公告)号：US11184200B2
公开(公告)日：2021-11-23
申请号：US16573588
申请日：2019-09-17
申请人： TM IP HOLDINGS, LLC
发明人： Harvey C. Woodsum , Richard C. Gerdes
IPC分类号： H04L1/02 , H04L27/00 , H04B14/00 , H04L27/34 , H04B14/08
摘要： Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for modulating and demodulating transpositional modulated (TM) signals. One aspect features a method of modulating a carrier signal that include the actions of generating a TM signal by generating a sinusoidal signal, and modulating the sinusoidal signal based on a data signal to provide the TM signal. Inserting the TM signal into a carrier signal to provide a TM modulated carrier signal. Modulating the TM modulated carrier signal with a non-TM signal to provide a combined signal. Transmitting the combined signal.

25. 发明授权

US08306136B2 Communications system utilizing orthogonal linear frequency modulated waveforms 有权
标题翻译：通信系统利用正交线性调频波形
公开(公告)号：US08306136B2
公开(公告)日：2012-11-06
申请号：US12603696
申请日：2009-10-22
申请人： John Fanson
发明人： John Fanson
IPC分类号： H04B14/08 , H04L27/00 , H04L27/06 , H04L27/08
CPC分类号： H04L27/2637 , H04L27/12 , H04L27/2634 , H04L27/2649 , H04L27/2653
摘要： An orthogonal linear frequency modulation (OLFM) communications system has an OFDM transmitter and receiver communcating data on a series of multiplexed sub-carriers over a communications medium. A linear frequency modulator provided at the transmitter subjects the sub-carriers to linear frequency modulation to produce a series of sub-sweeps for transmission over the communications medium. A linear frequency demodulator at the receiver produces the sub-carriers from the received sub-sweeps for subsequent demodulation to recover the data.
摘要翻译：正交线性频率调制（OLFM）通信系统在通信介质上具有一系列复用子载波上的OFDM发射机和接收机通信数据。在发射机处提供的线性频率调制器使子载波进行线性频率调制，以产生一系列用于通过通信介质传输的子扫描。在接收机处的线性频率解调器从所接收的子扫描中产生子载波用于随后的解调以恢复数据。

26. 发明授权

US08160011B2 Femtocell device 有权
标题翻译：毫微微蜂窝设备
公开(公告)号：US08160011B2
公开(公告)日：2012-04-17
申请号：US12355002
申请日：2009-01-16
申请人： Christopher Brian Smart , Fiona Clare Angharad Somerville
发明人： Christopher Brian Smart , Fiona Clare Angharad Somerville
IPC分类号： H04B14/08
CPC分类号： H04W16/12 , H04W4/06 , H04W16/24 , H04W84/045
摘要： There is provided a femtocell device for communicating with one or more user devices in a communication network, the network having a plurality of subchannels available for transmissions, wherein the femtocell device is adapted to use a first subset of the plurality of subchannels for communicating with user devices that are in a closed subscriber group of the femtocell device and within a first area, and a second subset of the plurality of subchannels for communicating with other user devices.
摘要翻译：提供了一种用于与通信网络中的一个或多个用户设备进行通信的毫微微小区设备，该网络具有可用于传输的多个子信道，其中，所述毫微微小区设备适于使用所述多个子信道中的第一子集来与用户通信位于毫微微小区设备的封闭用户组内并在第一区域内的设备以及用于与其他用户设备进行通信的多个子信道的第二子集。

27. 发明授权

US5982446A Video modulator arrangement 失效
标题翻译：视频调制器布置
公开(公告)号：US5982446A
公开(公告)日：1999-11-09
申请号：US730375
申请日：1996-10-15
申请人： Stuart J Millard
发明人： Stuart J Millard
IPC分类号： H04N5/40 , H03C1/54 , H04B14/08 , H04N7/04 , H03C3/38 , H03C5/00
CPC分类号： H04N7/04 , H04B14/08
摘要： In a single-chip multistandard video modulator arrangement in which audio signals for transmission with video signals are first modulated onto a subcarrier and then combined with the video signals for modulation onto a VHF or UHF main carrier, the modulated subcarrier signals are passed through a high-pass filter before being combined with the video signals in order to reduce the amplitude of any audio frequency components, and the resulting variations in main carrier amplitude, which tend to produce "sound in vision" effects.
摘要翻译：在单芯片多标准视频调制器装置中，其中用于与视频信号的传输的音频信号首先被调制到子载波上，然后与用于调制的视频信号组合到VHF或UHF主载波上，调制的副载波信号通过高通过滤波器与视频信号组合以减少任何音频分量的幅度，并且导致主载波幅度的变化，其倾向于产生“视觉上的声音”效应。

28. 发明授权

US4646290A Data transmission method and apparatus 失效
标题翻译：数据传输方法及装置
公开(公告)号：US4646290A
公开(公告)日：1987-02-24
申请号：US637208
申请日：1984-08-03
申请人： Michael T. Hills
发明人： Michael T. Hills
IPC分类号： H04B14/08 , H04J3/16 , H04J3/22 , H04J3/00
CPC分类号： H04B14/08 , H04J3/1647
摘要： A data transmission method and apparatus, particularly useful in an SCA FM subcarrier data transmission system, is disclosed. The method comprises selectively arranging individual characters of data messages of varying bit rates in real time in a multiframe matrix and transmitting the data messages at a defined bit rate to individual receiver locations where the data messages addressed to the individual receiver locations are decoded and displayed. The transmission method allows data messages of varying bit rates to be transmitted at a single defined bit rate to the receiver locations. At the receiver locations, the data messages are extracted from the matrix and regenerated. The data transmission method allows for downstream insertion of additional data and is highly tolerant of burst errors. A system for transmitting data using the method is also described.
摘要翻译：公开了一种在SCA FM子载波数据传输系统中特别有用的数据传输方法和装置。该方法包括在多帧矩阵中实时选择性地布置变化比特率的数据消息的各个字符，并以定义的比特率将数据消息发送到寻址到各个接收机位置的数据消息被解码和显示的各个接收机位置。传输方法允许以单个定义的比特率向接收机位置发送具有不同比特率的数据消息。在接收器位置，从矩阵中提取数据消息并重新生成。数据传输方法允许下游插入附加数据，并且高度容忍突发错误。还描述了使用该方法发送数据的系统。

29. 发明授权

US4623919A Method and system for controlling access to transmitted modulated electromagnetic wave carried information 失效
标题翻译：控制接收发射调制电磁波信息的方法和系统
公开(公告)号：US4623919A
公开(公告)日：1986-11-18
申请号：US522459
申请日：1983-08-11
申请人： James D. Welch
发明人： James D. Welch
IPC分类号： H04B14/08 , H04H40/18 , H04H60/15 , H04N7/167
CPC分类号： H04B14/08 , H04H60/15 , H04H40/18
摘要： A method and system for making possible enforceable subscription available electromagnetically transmitted communications. Mailable receiver tuning components are described which serve to make receivers operable in the presence of a control signal, said signal being comodulated with an information signal.
摘要翻译：一种用于使可执行订阅可用的电磁传输通信的方法和系统。描述了可用的接收机调谐组件，其用于使接收器在存在控制信号的情况下可操作，所述信号由信息信号调制。

30. 发明授权

US4584534A Method and apparatus for demodulating a carrier wave which is phase modulated by a subcarrier wave which is phase shift modulated by baseband signals 失效
标题翻译：用于解调由基带信号进行相移调制的副载波相位调制的载波的方法和装置
公开(公告)号：US4584534A
公开(公告)日：1986-04-22
申请号：US529632
申请日：1983-09-06
申请人： Enno E. Lijphart , Gerardus Drewes
发明人： Enno E. Lijphart , Gerardus Drewes
IPC分类号： H04B1/707 , H04B14/08 , H03D3/00
CPC分类号： H04B14/08
摘要： The invention relates to a method for demodulating a carrier wave which is phase modulated by a subcarrier wave which is phase shift modulated by baseband signals and applies especially to data transmission between a spacecraft and a ground station. The technological problem addressed is reduction of signal degradation and, consequently, of transmission power and size of the receiving antenna. According to the invention, the frequency is first down converted to an intermediate frequency (f.sub.c) which is lower than the carrier wave frequency; the subcarrier wave is extracted by phase demodulation using a Costas loop; digital sampling is performed on the signal demodulated in a Costas loop at a frequency which is twice the intermediate frequency (f.sub.c) and the bit clock frequency (f.sub.B) is regenerated in a first order phase locked loop using the subcarrier wave frequency as a reference frequency.
摘要翻译：本发明涉及一种用于解调由基带信号进行相移调制的副载波相位调制的载波的方法，特别适用于航天器与地面站之间的数据传输。所解决的技术问题是降低信号衰减，从而降低接收天线的发射功率和尺寸。根据本发明，首先将频率下变频至低于载波频率的中频（fc）; 使用科斯塔斯循环通过相位解调提取副载波; 对科斯塔斯环路解调的信号进行数字采样，频率为中频（fc）的两倍，并且使用副载波波频率作为参考频率在一阶锁相环中重新生成位时钟频率（fB）。

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