Multi-beam satellite communication system with user terminal frequencies
having transceivers using the same set of frequency hopping
    1.
    发明授权
    Multi-beam satellite communication system with user terminal frequencies having transceivers using the same set of frequency hopping 失效
    多波束卫星通信系统,其用户终端频率具有使用相同组跳频的收发器

    公开(公告)号:US5638399A

    公开(公告)日:1997-06-10

    申请号:US341869

    申请日:1994-11-15

    CPC classification number: H04B7/18576 Y02B60/50

    Abstract: The satellite radio communication system of this invention provides communication between one or more service centers and an ensemble of fixed and mobile user terminals. One or more earth orbiting satellites are provided with each satellite having transmitter forming a down-link channel which is slow frequency hopped, and a multi-beam antenna system with a single channel per beam to time division multiple broadcast signals to all user terminals covered by each said beam, respectively. Each user terminal includes a transceiver for receiving a down-link channel broadcast from the one of said beams in whose path it lies, and a return link comprised of a dedicated narrow band broadcast channel with slow frequency hopping of down-link channel. There is a fixed set of frequencies through which the frequency hopping is carried out, with the plurality of fixed and mobile user terminals using the same set of frequency hopping frequencies. Mutually synchronized transmissions from each user is such that while the ensemble of users display the same set of frequency hopping frequencies, each user in said ensemble of fixed and mobile user terminals employs a unique frequency at each instant of time.

    Abstract translation: 本发明的卫星无线电通信系统提供一个或多个服务中心与固定和移动用户终端的集合之间的通信。 提供一个或多个地球轨道卫星,每个卫星具有形成低频跳频的下行链路信道的发射机,以及每个波束具有单个信道的多波束天线系统,以分时多个广播信号给所有用户终端覆盖 每个所述光束。 每个用户终端包括收发器,用于从其所在的所述路径中的所述波束中的一个接收广播的下行链路信道,以及由具有下行链路信道的慢跳频的专用窄带广播信道组成的返回链路。 有一组固定频率通过跳频执行,多个固定和移动用户终端使用相同的跳频频率组。 来自每个用户的相互同步的传输使得当用户的组合显示相同的跳频频率组时,固定和移动用户终端的所述组合中的每个用户在每个时刻采用唯一的频率。

    Charge-coupled-device based all-analog wave form scrambling with
applications in audio, video, video-on-demand, and TV systems
    2.
    发明授权
    Charge-coupled-device based all-analog wave form scrambling with applications in audio, video, video-on-demand, and TV systems 失效
    基于电荷耦合器件的全模拟波形加扰与音频,视频,视频点播和电视系统中的应用

    公开(公告)号:US5598472A

    公开(公告)日:1997-01-28

    申请号:US362269

    申请日:1994-12-22

    CPC classification number: H04N7/1675 H04N7/163 H04N7/1696

    Abstract: A scrambled analog signalling system having a source of analog signals to be sent to a receiving device is comprised of a multiple stage charge coupled device (66) having analog signal input terminals connected to receive analog signal samples from said source of analog signals. The multiple stage charge coupled device having N stages, corresponding stage taps, and an input clock signal. A shuffling circuit (68) having a first input connected to the N stage taps for receiving the analog signal samples and second input for receiving a random seed (67) signal to cause a random reordering of incoming analog signal samples, a source of random seed signals connected to the second input, and an output device (72) connected to receive a stream of the analog signal samples which have been shuffled according to a mapping code carried by the random seed signal. A filter for reconstructing the analog signal in its scrambled format, and a transmission system for conveying the analog signal in its scrambled format to the receiving device.

    Abstract translation: 具有要发送到接收设备的模拟信号源的加扰模拟信号系统包括具有连接以从所述模拟信号源接收模拟信号样本的模拟信号输入端的多级电荷耦合器件(66)。 具有N级,多级抽头和输入时钟信号的多级电荷耦合器件。 一种混洗电路(68),具有连接到N级抽头的第一输入端用于接收模拟信号采样和用于接收随机种子(67)信号的第二输入,以引起输入的模拟信号样本的随机重排序,随机种子源 连接到第二输入端的信号,以及输出装置(72),连接成根据由随机种子信号携带的映射码接收已被混洗的模拟信号采样流。 一种用于以其加扰格式重建模拟信号的滤波器,以及用于将其加扰格式的模拟信号传送到接收装置的传输系统。

    Charge-coupled-device based data-in-voice modem
    3.
    发明授权
    Charge-coupled-device based data-in-voice modem 失效
    基于电荷耦合器件的数据语音调制解调器

    公开(公告)号:US5577066A

    公开(公告)日:1996-11-19

    申请号:US242103

    申请日:1994-05-13

    CPC classification number: H04L27/18 G11C27/04 H04B1/38 H04H2201/20

    Abstract: A data-in-voice modem is disclosed using charge coupled devices. Unique features include: (1) Baseband-to-IF upconversion to enable CCD-based demod/processing; (2) All analog (no analog-to-digital A/D required); option for post-CCD A/D; (3) Additional on-chip functions; (4) Stand-alone, CCD-based high-rate modem over telephone lines; and (5) CCD-based cable-tv/multimedia processing, via baseband-to-IF upconversion, followed by IF-sampled CCD processing.

    Abstract translation: 公开了一种使用电荷耦合器件的数据语音调制解调器。 独特的功能包括:(1)基带到IF上变频,实现基于CCD的解调/处理; (2)所有模拟(不需要模拟到数字A / D); 后CCD A / D选项; (3)额外的片上功能; (4)电话线上独立的基于CCD的高速调制解调器; 和(5)基于CCD的有线电视/多媒体处理,通过基带到IF上变频,然后进行IF采样CCD处理。

    Cellular positioning system (CPS)
    4.
    发明授权
    Cellular positioning system (CPS) 失效
    蜂窝定位系统(CPS)

    公开(公告)号:US06111538A

    公开(公告)日:2000-08-29

    申请号:US393312

    申请日:1995-02-23

    Abstract: Positioning system for locating a mobile body comprising a plurality of earth based spread spectrum (SS) broadcasting stations arranged geographically in a cellular pattern. Each SS broadcasting station include a modulator providing a channel signal structure which is substantially orthogonal with respect to adjacent stations in the cellular pattern, each channel signal including navigation beacon data including a unique beacon identification, station latitude and longitude, time.sub.-- slot and phase characterizations and selected parameters of adjacent stations. In one embodiment, each modulator provides a chirped SS signal in which the navigation beacon is a frequency tone that is repeatedly swept over a selected frequency band for each station. In a further embodiment, each modulator provides a GPS like direct sequence SS signal in which the navigation beacon is a PN coded broadcast. A receiver on the mobile body receives the SS signals from at least three of the SS broadcasting stations and determines the location thereof. A fourth SS broadcasting station provides altitude. CPS satellite signals can be used for timing control.

    Abstract translation: 用于定位移动体的定位系统,所述移动体包括以蜂窝状图案地理布置的多个基于地球的扩频(SS)广播站。 每个SS广播站包括调制器,其提供相对于蜂窝模式中的相邻站基本正交的信道信号结构,每个信道信号包括导航信标数据,其包括唯一信标标识,站纬度和经度,时隙和相位表征 并选择相邻站的参数。 在一个实施例中,每个调制器提供啁啾SS信号,其中导航信标是针对每个站重复地扫过选定频带的频率音调。 在另一实施例中,每个调制器提供类似GPS的直接序列SS信号,其中导航信标是PN编码广播。 移动体上的接收机从SS广播站中的至少三个SS接收SS信号并确定其位置。 第四个SS广播电台提供高度。 CPS卫星信号可用于定时控制。

    No-outage GPS/commercial RF positioning system
    5.
    发明授权
    No-outage GPS/commercial RF positioning system 失效
    无中断GPS /商用射频定位系统

    公开(公告)号:US5422813A

    公开(公告)日:1995-06-06

    申请号:US115087

    申请日:1993-09-02

    Abstract: The present invention relates to a no outage GPS/AM position finding system wherein a GPS system having a plurality of satellites transmits time and location data over radio frequency signals to enable a mobile GPS receiver station on the ground to determine its position, and a cellular telephone is carried with the mobile GPS receiver, traveling in range of a plurality of conventional ground based amplitude modulated (AM) transmitters for transmitting AM signals. Each mobile GPS receiver station includes phase detection means for simultaneously receiving a predetermined number of the AM signals, and measuring the changes in phase of each of the AM signals as the mobile GPS receiver travels, and deriving therefrom an AM position signal. A reference station for receiving the GPS and AM signals provides correction signals via a cellular telephone network which receives and transmits the correction signals to the mobile GPS receiver station. The last accurate GPS position signal is used for resolving any ambiguities in the AM radio position signal and to accommodate the lack of synchronization in the AM transmitters. The reference station measures the frequency and wavelength variations in the AM signals and conveys same to the mobile GPS receiver station by the cellular telephone. The AM position signal is activated upon detecting outages or blockages in the GPS signals.

    Abstract translation: 本发明涉及一种不中断GPS / AM位置查找系统,其中具有多个卫星的GPS系统通过射频信号发送时间和位置数据,以使得地面上的移动GPS接收机站能够确定其位置,并且蜂窝 移动GPS接收机携带电话,在多个传统的基于地面的幅度调制(AM)发射机的范围内行进,用于发送AM信号。 每个移动GPS接收站包括相位检测装置,用于同时接收预定数量的AM信号,并且随着移动GPS接收机行进而测量每个AM信号的相位变化,并从其导出AM位置信号。 用于接收GPS和AM信号的参考站经由蜂窝电话网络提供校正信号,蜂窝电话网接收并发送校正信号给移动GPS接收站。 最后精确的GPS位置信号用于解决AM无线电位置信号中的任何歧义,并适应AM发射机中的同步缺乏。 参考站测量AM信号的频率和波长变化,并通过蜂窝电话将其传送到移动GPS接收站。 在检测到GPS信号中断或阻塞时,AM位置信号被激活。

    Cellular positioning system (CPS)
    6.
    再颁专利
    Cellular positioning system (CPS) 有权
    蜂窝定位系统(CPS)

    公开(公告)号:USRE38808E1

    公开(公告)日:2005-10-04

    申请号:US10230104

    申请日:2002-08-29

    Abstract: Positioning system for locating a mobile body comprising a plurality of earth based spread spectrum (SS) broadcasting stations arranged geographically in a cellular pattern. Each SS broadcasting station include a modulator providing a channel signal structure which is substantially orthogonal with respect to adjacent stations in the cellular pattern, each channel signal including navigation beacon data including a unique beacon identification, station latitude and longitude, time_slot and phase characterizations and selected parameters of adjacent stations. In one embodiment, each modulator provides a chirped SS signal in which the navigation beacon is a frequency tone that is repeatedly swept over a selected frequency band for each station. In a further embodiment, each modulator provides a GPS like direct sequence SS signal in which the navigation beacon is a PN coded broadcast. A receiver on the mobile body receives the SS signals from at least three of the SS broadcasting stations and determines the location thereof. A fourth SS broadcasting station provides altitude CPS satellite signals can be used for timing control.

    Abstract translation: 用于定位移动体的定位系统,所述移动体包括以蜂窝状图案地理布置的多个基于地球的扩频(SS)广播站。 每个SS广播站包括调制器,其提供与蜂窝模式中的相邻站基本上正交的信道信号结构,每个信道信号包括导航信标数据,其包括唯一的信标标识,站纬度和经度,时隙和相位表征,并选择 相邻站的参数。 在一个实施例中,每个调制器提供啁啾SS信号,其中导航信标是针对每个站重复地扫过选定频带的频率音调。 在另一实施例中,每个调制器提供类似GPS的直接序列SS信号,其中导航信标是PN编码广播。 移动体上的接收器从SS广播站中的至少三个SS接收SS信号并确定其位置。 第四个SS广播电台提供高度CPS卫星信号,可用于定时控制。

    Hybrid system for position determination by a mobile communications terminal

    公开(公告)号:US06538601B2

    公开(公告)日:2003-03-25

    申请号:US09880807

    申请日:2001-06-15

    Abstract: A mobile unit includes a network receiver, such as a GSM telephone, for communication with a wireless network, and a navigation receiver, such as a global positioning system (GPS) receiver for receiving navigation signals. The navigation receiver includes a vector delay lock loop (VDLL) that receives information concerning the navigation sources, such as satellite data messages, transmitted over a common broadcast channel of the wireless network, and receives navigation signals from the navigation receiver. The VDLL uses the navigation signals received from navigation sources that are not obscured and uses satellite data messages broadcast over the wireless network to track a navigation signal that is received only intermittently due, for example, to the navigation source being obscured from view of the mobile unit.

    Phase agile antenna for use in position determination
    8.
    发明授权
    Phase agile antenna for use in position determination 失效
    相位敏捷天线用于位置确定

    公开(公告)号:US6148195A

    公开(公告)日:2000-11-14

    申请号:US25093

    申请日:1998-02-17

    CPC classification number: G01S3/52 G01S3/16 G01S3/46 H01Q1/246 H01Q21/061

    Abstract: A cellular telephone communication system has at least one base station and a plurality of remote mobile stations in which both base and mobile stations have RF transceivers which communicate with each other using periodically repeated pulse sequence epochs whose time patterns are known at both transmitting and receiving station. Each mobile station transceiver, during normal operation, establishes and maintains synchronization between the start of a received pulse epoch at the mobile station and a subsequent beginning of a responsive transmitted pulse epoch. An agile antenna system is located at the base station and includes at least one scanning antenna spaced a selected distance from a central reference point. The scanning antenna is effectively rotated relative to the central reference point and adapted to receive RF transmissions from a selected mobile station, and a direction or bearing detection processor is connected to antenna systems for detecting from received RF transmissions from the selected mobile station the bearing to the selected mobile station from the base station. The bearing sensing processor is one selected from amplitude sensing, phase sensing or frequency sensing or a combination of these sensing principles. A range measuring processor circuit also at the base station measures the time interval from the start of the base station's transmitted pulse epoch to the start of a pulse epoch subsequently received from the selected mobile station and derives range to the selected mobile station therefrom.

    Abstract translation: 蜂窝式电话通信系统具有至少一个基站和多个远程移动站,其中基站和移动台均具有使用周期性重复的脉冲序列历元来进行通信的RF收发器,其时间模式在发送和接收站都是已知的 。 每个移动台收发信机在正常操作期间建立和维持在移动站的接收脉冲时期的开始与响应发射的脉冲时期的后续开始之间的同步。 敏捷天线系统位于基站处,并且包括与中心参考点间隔开选定距离的至少一个扫描天线。 扫描天线相对于中心参考点有效地旋转并且适于接收来自所选移动台的RF传输,并且方向或方位检测处理器连接到天线系统,用于从所选择的移动台的所接收的RF传输中检测到 所选择的移动台从基站。 轴承感测处理器是从幅度感测,相位感测或频率感测中选出的,或这些感测原理的组合。 基站的距离测量处理器电路也测量从基站发送的脉冲时期开始到随后从所选择的移动站接收到的脉冲历元的开始的时间间隔,并从其中选择移动站的范围。

    Universal interactive set-top controller for downloading and playback of
information and entertainment services
    9.
    发明授权
    Universal interactive set-top controller for downloading and playback of information and entertainment services 失效
    通用互动机顶盒控制器,用于下载和播放信息和娱乐服务

    公开(公告)号:US5640453A

    公开(公告)日:1997-06-17

    申请号:US288754

    申请日:1994-08-11

    CPC classification number: H04N7/17327 H04N5/765 H04N5/775 H04N5/782

    Abstract: A universal interactive control system for the downloading and playback of information and entertainment services from one or more network distribution centers, said one or more network distribution centers providing information and entertainment signals selected from video and audio programs, video catalogs, and data files, said universal interactive control system. The interactive control system includes: a controller circuit, a data distribution circuit controlled by the controller circuit, a data processor circuit controlled by the controller circuit, and a first plurality of interface connector circuits, with a first of the interface connector circuits for connecting the distribution circuit to a display device under control of the controller, and a second of the interface connector circuits for connecting the data distribution circuit to a storage device under control of the controller circuit.

    Abstract translation: 一种用于从一个或多个网络分配中心下载和回放信息和娱乐服务的通用交互式控制系统,所述一个或多个网络分发中心提供从视频和音频节目,视频目录和数据文件中选择的信息和娱乐信号,所述网络分发中心 通用交互式控制系统。 交互控制系统包括:控制器电路,由控制器电路控制的数据分配电路,由控制器电路控制的数据处理器电路和第一多个接口连接器电路,其中第一个接口连接器电路用于连接 分配电路连接到控制器的控制下的显示装置;以及第二接口连接器电路,用于在控制器电路的控制下将数据分配电路连接到存储装置。

    Digital audio broadcasting system
    10.
    发明授权
    Digital audio broadcasting system 失效
    数字音频广播系统

    公开(公告)号:US5283780A

    公开(公告)日:1994-02-01

    申请号:US598396

    申请日:1990-10-18

    Abstract: A digital audio broadcasting system that is capable of providing a large number of high quality stereophonic channels to mobile receivers in an environment with severe multipath delay and fading. Optimum combination of frequency and time diversity to guarantee robust performance in the mobile channel, with its multipath delay and frequency-selective fading effects. The system is based upon a dynamic single channel per carrier assignment of each stereo channel to many carriers. Intersymbol interference degradations caused by multipath delay are mitigated via an adaptive equalizer in the receiver. This dynamic single channel per carrier system preserves the simplicity inherent in the single channel per carrier assignment while it incorporates the ability to address frequency-selective fading by providing substantial frequency diversity. The frequency diversity is achieved via a slow frequency hop implementation in which the assignment of a number of stereo channels to an equal number of carrier frequencies is changed periodically. The system offers the simplicity of single channel per carrier assignment of stereo channels while it achieves the powerful performance benefits of frequency diversity and adaptive equalization for the mobile channel.

    Abstract translation: 一种数字音频广播系统,其能够在具有严重的多径延迟和衰落的环境中向移动接收机提供大量高质量立体声信道。 频率和时间分集的最佳组合,以保证移动通道的鲁棒性能,具有多径延迟和频率选择性衰落效应。 该系统基于每个载波分配到每个立体声信道到多个载波的动态单个信道。 通过接收机中的自适应均衡器来减轻由多径延迟引起的符号间干扰降低。 每个载波系统的这种动态单信道保留了每个载波分配的单信道固有的简单性,同时它具有通过提供实质的频率分集来寻址频率选择性衰落的能力。 通过慢速跳频实现来实现频率分集,其中将多个立体声信道分配到相同数量的载波频率周期性地改变。 该系统提供单通道每个载波分配立体声通道的简单性,同时实现了对于移动通道的频率分集和自适应均衡的强大的性能优势。

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