公开(公告)号：US5748686A

公开(公告)日：1998-05-05

申请号：US628220

申请日：1996-04-04

申请人： Ehud Langberg ,  Jin-Der Wang

发明人： Ehud Langberg ,  Jin-Der Wang

IPC分类号： H04H20/46 ,  H04H20/72 ,  H04H40/27 ,  H04J3/06 ,  H04L25/03 ,  H04L7/00

CPC分类号： H04H20/46 ,  H04H40/27 ,  H04L25/03133 ,  H04H20/72 ,  H04H2201/20 ,  H04L7/08

摘要： In a digital audio broadcasting (DAB) system having a radio-frequency (RF) transmitter and a corresponding RF receiver, a system and method for providing improved frame synchronization is provided. In accordance with the preferred embodiment, the RF transmitter formats a DAB signal into a sequence of frames, each frame having a header with a predefined grouping of psuedo-random number sequences comprising 100 symbols. Of these 100 symbols, 86 symbols of the header preferable are used for frame synchronization and characterization of a communications channel, while the remaining 14 symbols are used for interleaver and data synchronization in an interleaved fashion. The formatted DAB signal, including the frame sequences, is transmitted to the receiver preferably using quadrature phase-shift keying modulation. At the receiver, a correlator, utilizing a synchronization detection algorithm, is generally designed to match a predetermined symbol pattern within the received signal. Once the frame synchronization is established, the channel is characterized and the data symbols are recovered.

摘要翻译： 在具有射频（RF）发射机和对应的RF接收机的数字音频广播（DAB）系统中，提供了一种用于提供改进的帧同步的系统和方法。 根据优选实施例，RF发射机将DAB信号格式化成帧序列，每帧具有包含100个符号的伪随机数序列的预定义分组的报头。 在这100个符号中，优选的标题的86个符号用于通信信道的帧同步和表征，而剩余的14个符号以交织方式用于交织器和数据同步。 包括帧序列的格式化的DAB信号优选地使用正交相移键控调制发送到接收机。 在接收机处，通常设计利用同步检测算法的相关器，以匹配接收信号内的预定码元模式。 一旦建立了帧同步，就对信道进行表征，并恢复数据符号。

公开(公告)号：US5574966A

公开(公告)日：1996-11-12

申请号：US367402

申请日：1994-12-30

申请人： Farhad Barzegar ,  Robert E. Schroeder

发明人： Farhad Barzegar ,  Robert E. Schroeder

IPC分类号： H04N5/38 ,  H04H20/38 ,  H04H20/42 ,  H04H20/46 ,  H04H20/72 ,  H04J1/08 ,  H04N21/2368 ,  H04N21/434 ,  H04H1/02

CPC分类号： H04H20/46 ,  H04N21/6112 ,  H04N21/64784 ,  H04H20/38 ,  H04H20/42 ,  H04H20/72 ,  H04N2007/145

摘要： A wireless base station architecture that is particularly well-suited for providing audio, video and data services. An exemplary embodiment preferably transmits to all of an area those "common services" (e.g., broadcast television) that are intended to be received by multiple recipients throughout the area, but, in contrast, transmits only into a sector those recipient-specific services (e.g., point-to-point voice services, interactive video services) that are intended for less than all of the recipients in the area. In an exemplary embodiment, a demultiplexor directs both broadcast video and recipient-specific or "sectorized" video signals to a video processor, which prepares them for transmission. The demultiplexor also directs sectorized audio signals to an audio processor/RF combiner, which prepares them for transmission. The video processor preferably directs the broadcast video signals to an antenna, which radiates the signal throughout the area, but directs the sectorized video signals to the audio processor/RF combiner. The audio processor/RF combiner combines the sectorized audio signals and the sectorized video signals before transmitting them to an antenna, which radiates the combined signal throughout the sector.

摘要翻译： 一种特别适合提供音频，视频和数据服务的无线基站架构。 一个示例性实施例优选地向所有区域传输旨在由整个区域中的多个接收者接收的那些“共同服务”（例如，广播电视），但是相反，仅向扇区传送那些接收者特定服务（ 例如，点对点语音服务，交互式视频服务），其用于少于该区域中的所有接收者。 在示例性实施例中，解复用器将广播视频和接收者特定或“扇区化”视频信号引导到视频处理器，视频处理器准备它们进行传输。 解复用器还将扇区化音频信号引导到音频处理器/ RF组合器，其准备它们进行传输。 视频处理器优选地将广播视频信号引导到天线，其在整个区域中辐射信号，但是将扇区化的视频信号引导到音频处理器/ RF组合器。 音频处理器/ RF组合器在将它们发送到天线之前组合扇区化音频信号和扇区化视频信号，其在整个扇区辐射组合信号。

公开(公告)号：US20050232445A1

公开(公告)日：2005-10-20

申请号：US11154816

申请日：2005-06-17

申请人： Michael Vaudrey ,  William Saunders

发明人： Michael Vaudrey ,  William Saunders

IPC分类号： G11B20/00 ,  G11B20/10 ,  G11B27/034 ,  G11B27/10 ,  H03G3/00 ,  H04H20/46 ,  H04H20/89 ,  H04R27/00 ,  H04S3/00 ,  H04S5/02 ,  H04S7/00

CPC分类号： H04H20/89 ,  G11B20/00992 ,  G11B20/10527 ,  G11B27/034 ,  G11B27/105 ,  G11B2020/10592 ,  G11B2220/2545 ,  G11B2220/2562 ,  G11B2220/90 ,  H04R25/43 ,  H04R27/00 ,  H04R2227/003 ,  H04S3/002 ,  H04S7/30 ,  H04S2400/01 ,  H04S2400/11 ,  H04S2400/13

摘要： Systems provide an audio/visual output to each of a plurality of listeners in a manner that permits individualized audio adjustment, wherein audio comprises a first signal that is substantially voice and a second signal that is substantially other than voice. The systems may include a video device, a storage medium, and a transmitter that transmits the first and second signals to a plurality of personal listening devices. Each of the plurality of personal listening devices may include first and second receivers, first and second adjustment devices, an audio signal combining device, and one or more transducers, wherein the systems permit each of the plurality of listeners to adjust the first and second signals independently of other ones of the plurality of listeners in an audience.

摘要翻译： 系统以允许个性化音频调整的方式向多个听众中的每一个提供音频/视频输出，其中音频包括基本上是语音的第一信号和基本上不同于语音的第二信号。 该系统可以包括视频设备，存储介质和将第一和第二信号发送到多个个人收听设备的发射机。 多个个人聆听装置中的每一个可以包括第一和第二接收器，第一和第二调整装置，音频信号组合装置和一个或多个换能器，其中系统允许多个收听者中的每一个调节第一和第二信号 独立于观众中的多个听众中的其他听众。

公开(公告)号：US20050155082A1

公开(公告)日：2005-07-14

申请号：US11041905

申请日：2005-01-25

申请人： Hillel Weinstein ,  Yishaiahu Strull ,  Zeev Orbach

发明人： Hillel Weinstein ,  Yishaiahu Strull ,  Zeev Orbach

IPC分类号： H04H1/00 ,  H04H20/46 ,  H04H20/79 ,  H04H60/97 ,  H04N7/10 ,  H04N7/173 ,  H04N5/44 ,  H04N5/38

CPC分类号： H04H20/79 ,  H04H20/46 ,  H04H60/97 ,  H04N7/102 ,  H04N7/17309 ,  H04N21/42676 ,  H04N21/6168

摘要： Embodiments of the invention provide a method, device and/or system for connecting at least one subscriber device, e.g., a legacy subscriber device, to a wideband distribution network. The device may include, for example, an up-converter to up-convert a subscriber upstream signal within a subscriber upstream frequency band supported by the subscriber device, into an up-converted upstream signal within an upstream sub-band of an extended upstream frequency band; and/or a down-converter to down-convert an extended downstream signal in an extended downstream frequency band, into a down-converted subscriber downstream signal within a subscriber downstream frequency band supported by the subscriber device. Other embodiments are described and claimed.

摘要翻译： 本发明的实施例提供了用于将至少一个用户设备（例如，传统用户设备）连接到宽带分布网络的方法，设备和/或系统。 该设备可以包括例如上变频器，用于将由用户设备支持的用户上行频带内的用户上行信号上转换为扩展上行频率的上行子频带内的上变频上行信号 带; 和/或下变频器将扩展下游频带中的扩展下行信号下转换成由用户设备支持的用户下行频带内的下变频用户下行信号。 描述和要求保护其他实施例。

公开(公告)号：US6151634A

公开(公告)日：2000-11-21

申请号：US42172

申请日：1998-03-13

申请人： Robert D. Glaser ,  Mark O'Brien ,  Thomas B. Boutell ,  Randy Glen Goldberg

发明人： Robert D. Glaser ,  Mark O'Brien ,  Thomas B. Boutell ,  Randy Glen Goldberg

IPC分类号： H04H20/30 ,  H04H20/40 ,  H04H20/46 ,  H04H20/83 ,  H04H60/27 ,  H04H60/51 ,  G06F13/38 ,  G06F15/17

CPC分类号： H04H20/46 ,  H04H20/28 ,  H04H20/82 ,  H04H20/83 ,  H04H60/73 ,  H04H20/30 ,  H04H20/40 ,  H04H60/27 ,  H04H60/51

摘要： An audio-on-demand communication system provides real-time playback of audio data transferred via telephone lines or other communication links. One or more audio servers include memory banks which store compressed audio data. At the request of a user at a subscriber PC, an audio server transmits the compressed audio data over the communication link to the subscriber PC. The subscriber PC receives and decompresses the transmitted audio data in less than real-time using only the processing power of the CPU within the subscriber PC. According to one aspect of the present invention, high quality audio data compressed according to lossless compression techniques is transmitted together with normal quality audio data. According to another aspect of the present invention, metadata, or extra data, such as text, captions, still images, etc., is transmitted with audio data and is simultaneously displayed with corresponding audio data. The audio-on-demand system also provides a table of contents indicating significant divisions in the audio clip to be played and allows the user immediate access to audio data at the listed divisions. According to a further aspect of the present invention, servers and subscriber PCs are dynamically allocated based upon geographic location to provide the highest possible quality in the communication link.

公开(公告)号：US06094661A

公开(公告)日：2000-07-25

申请号：US981042

申请日：1998-01-26

申请人： Ari Salomaki

发明人： Ari Salomaki

IPC分类号： H04N7/26 ,  H04H20/46 ,  H04H20/72 ,  H04H20/95 ,  H04N7/08 ,  H04N7/081 ,  H04N7/16 ,  H04N7/24 ,  G06F17/30

CPC分类号： H04H20/46 ,  H04H20/72 ,  H04H20/95 ,  H04N21/233 ,  H04N21/235 ,  H04N21/23617 ,  H04N21/435 ,  H04N21/4351 ,  H04N21/8166 ,  H04N21/8543 ,  H04N21/858 ,  H04H2201/20 ,  Y10S707/99931 ,  Y10S707/99945 ,  Y10S707/99948

摘要： The invention relates to the transmission of multimedia objects in a digital broadcasting system and particularly to the transmission of a reference system and the start-up procedure of a multimedia presentation according to the MHEG standard via a broadcasting system according to the DAB standard. According to the invention, the DAB ensemble according to the DAB standard and the service channel and fast information channel comprised by the DAB ensemble are handled as virtual, multiplexed MHEG objects, whereby they and the real MHEG objects positioned below them are referred to in a manner specified in the standard ISO/IEC 13522. In addition, information about start-up procedures relating to a multimedia program or a corresponding series of operations is transmitted in a special file, and a parameter in the file descriptor associated with said file indicates that said file contains instructions for said procedures.

摘要翻译： PCT No.PCT / FI96 / 00348 Sec。 371日期1998年1月26日 102（e）1998年1月26日PCT PCT 1996年6月12日PCT公布。 公开号WO96 / 42144 PCT 日期：1996年12月27日本发明涉及数字广播系统中的多媒体对象的传输，特别涉及根据MHEG标准的多媒体呈现的参考系统的传输和通过根据MHEG标准的广播系统的启动过程 DAB标准。 根据本发明，根据DAB标准的DAB集合以及由DAB集合组成的服务信道和快速信息信道被处理为虚拟多路复用的MHEG对象，由此它们和位于它们之下的真实MHEG对象被称为 在标准ISO / IEC 13522中规定的方式。另外，关于与多媒体程序或相应的一系列操作相关的启动过程的信息在专用文件中发送，并且与所述文件相关联的文件描述符中的参数指示 所述文件包含所述程序的说明。

公开(公告)号：US5862451A

公开(公告)日：1999-01-19

申请号：US589842

申请日：1996-01-22

申请人： Alan L. Grau ,  Richard J. Corrigan ,  Kurt W. Steinbrenner ,  Timothy M. Burke

发明人： Alan L. Grau ,  Richard J. Corrigan ,  Kurt W. Steinbrenner ,  Timothy M. Burke

IPC分类号： H04H20/42 ,  H04H20/46 ,  H04H20/78 ,  H04H20/81 ,  H04H60/97 ,  H04L1/20 ,  H04L12/28 ,  H04N7/10 ,  H04N7/173 ,  H04H1/02 ,  H04B17/00 ,  H04N7/14 ,  H04N17/00

CPC分类号： H04H20/42 ,  H04H20/46 ,  H04H20/78 ,  H04H20/81 ,  H04H60/97 ,  H04L1/20 ,  H04L12/2801 ,  H04N7/10 ,  H04N7/17309

摘要： A method and apparatus in a communication system (100) for allocating and controlling data transmissions to and from communications unit (134) in communications system (100). The communication systems (100) includes a cable distribution network (106) with a base communications unit (102) and a number of downstream communications units (134) all connected to the cable distribution network (106). A plurality of channels are used to transmit data transmissions between the base communications unit (100) and the downstream communications unit (134). Uplink and downlink channels are monitored to determine channel quality for each of the channels in communications system (100). The determined channel quality is used to both initiate transfers of communications links to other frequencies and for assigning channels to various communications units (134).

摘要翻译： 一种通信系统（100）中用于分配和控制到通信系统（100）中的通信单元（134）的数据传输的方法和设备。 通信系统（100）包括具有基本通信单元（102）和全部连接到电缆分配网络（106）的多个下游通信单元（134）的电缆分配网络（106）。 多个信道用于在基本通信单元（100）和下游通信单元（134）之间传输数据传输。 监视上行链路和下行链路信道以确定通信系统（100）中的每个信道的信道质量。 所确定的信道质量用于两者发起到其他频率的通信链路的传送和用于将信道分配给各种通信单元（134）。

公开(公告)号：US5544161A

公开(公告)日：1996-08-06

申请号：US413207

申请日：1995-03-28

申请人： John A. Bigham ,  Kamran Sistanizadeh ,  Dave Little

发明人： John A. Bigham ,  Kamran Sistanizadeh ,  Dave Little

IPC分类号： H04H20/38 ,  H04H20/42 ,  H04H20/46 ,  H04H20/78 ,  H04L12/56 ,  H04N7/173 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/438 ,  H04N21/61 ,  H04N21/6334 ,  H04N21/643 ,  H04N21/647 ,  H04Q11/04 ,  H04J3/24

CPC分类号： H04H20/42 ,  H04H20/46 ,  H04H20/78 ,  H04L49/3081 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/4381 ,  H04N21/4382 ,  H04N21/6118 ,  H04N21/63345 ,  H04N21/64307 ,  H04N21/64707 ,  H04N7/17309 ,  H04Q11/0478 ,  H04H20/38 ,  H04L2012/5612 ,  H04L2012/5616 ,  H04L2012/5642 ,  H04L2012/5672

摘要： A video distribution network having an architecture that distributes video services over a greater serving area. The broadcast consolidation section receives broadband data from a plurality of information providers, preferably as compressed, digital signals using asynchronous transfer mode (ATM) transport. The broadcast consolidation section combines the ATM streams from different information providers and outputs a consolidated signal onto a transport ring. The broadcast ring supplies the consolidated broadcast edit to a plurality of video network hubs, each of which downloads the consolidated broadcast data, converts the consolidated broadcast data to MPEG data on an RF carrier, and combines the RF signal with other RF signals before transmission by optical fiber to a plurality of local video access node. Each local video access node combines the RF broadcast data from the corresponding video access node with downstream IMTV traffic supplied by an ATM backbone subnetwork. The combined RF signals are output from the local video access nodes to the access of network servicing these subscribers. ATM demultiplexers in the video network hubs and the local video access nodes perform MPEG processing on received ATM cell streams, assign identification values, and output on broadband channels or narrowband signaling channels, on the basis of corresponding VPI/VCI values and downloaded routing information, resulting in efficient transport of signaling traffic and interactive data.

摘要翻译： 一种视频分配网络，其具有在更大的服务区域上分发视频服务的架构。 广播合并部分从多个信息提供者接收宽带数据，优选地使用异步传输模式（ATM）传输作为压缩的数字信号。 广播整合部分组合来自不同信息提供商的ATM流，并将合并的信号输出到运输环上。 广播环将综合广播编辑提供给多个视频网络集线器，每个视频网络集线器下载合并的广播数据，将合并的广播数据转换为RF载体上的MPEG数据，并将RF信号与其他RF信号组合在传输之前 光纤到多个本地视频接入节点。 每个本地视频接入节点将来自相应视频接入节点的RF广播数据与由ATM骨干子网提供的下行IMTV业务相结合。 组合的RF信号从本地视频接入节点输出到对这些用户进行网络服务的接入。 视频网络集线器和本地视频接入节点中的ATM解复用器基于相应的VPI / VCI值和下载的路由信息​​对接收的ATM信元流执行MPEG处理，分配标识值，并在宽带信道或窄带信令信道上输出， 导致信令流量和交互式数据的有效传输。

公开(公告)号：US5512937A

公开(公告)日：1996-04-30

申请号：US335184

申请日：1994-11-07

申请人： John D. Beierle

发明人： John D. Beierle

IPC分类号： H04H20/46 ,  H04H20/78 ,  H04H20/79 ,  H04H20/81 ,  H04H60/80 ,  H04H60/93 ,  H04H60/97 ,  H04M11/00 ,  H04N7/16 ,  H04N7/12

CPC分类号： H04N7/16 ,  H04H20/46 ,  H04H20/78 ,  H04H20/81 ,  H04H60/80 ,  H04M11/00 ,  H04H20/79 ,  H04H60/93 ,  H04H60/97

摘要： A system for voice and video distribution amongst a plurality of telephone subscriber locations operating on a broadband cable network. The subscriber locations are adapted to establish RF transmitting and receiving channels for carrying voice and signalling information and each further includes a tunable video signal generator and a tunable video signal receiver for coupling video signals to and from subscriber location video RF broadband channels of the cable network. A central switch is also coupled to the cable network and enables each RF transmitting channel to be selectively coupled to any of the RF receiving channels and also enables a particular subscriber location video RF broadband channel to be assigned to a subscriber location.

摘要翻译： 一种用于在宽带电缆网络上操作的多个电话用户位置之间的语音和视频分配的系统。 用户位置适于建立用于承载语音和信令信息的RF发送和接收信道，并且每个还包括可调谐视频信号发生器和可调谐视频信号接收器，用于将视频信号耦合到有线网络的用户位置视频RF宽带信道 。 中央交换机还耦合到电缆网络，并且使得每个RF发射信道能够选择性地耦合到任何RF接收信道，并且还使特定用户位置视频RF宽带信道被分配给用户位置。

公开(公告)号：US20130109295A1

公开(公告)日：2013-05-02

申请号：US13659029

申请日：2012-10-24

申请人： Aereo, Inc.

发明人： Joseph Thaddeus Lipowski ,  James Alan Bingham

IPC分类号： H04H20/46

CPC分类号： H04H20/423 ,  H01Q1/523 ,  H04H60/17 ,  H04H60/27 ,  H04N21/2143 ,  H04N21/2393 ,  H04N21/2405 ,  H04N21/4263 ,  H04N21/43615 ,  H04N21/4383 ,  H04N21/64723 ,  H04W72/005 ,  H04W72/046

摘要： A method and system optimally selecting antenna elements based on the current availability of antenna elements and the current usage of other antenna elements within a two or three dimensional array. The present system and method pertain to an approach to allow the maximal usage of each antenna element while simultaneously reducing the coupling between antenna elements to improve the signal strength in each antenna element by ensuring that antenna elements in the same incident path are not tuned to the same frequency or physically or electrically near elements tuned to identical or adjacent frequencies.

摘要翻译： 一种方法和系统，基于天线元件的当前可用性和在两维或三维阵列内的其他天线元件的当前使用情况最佳地选择天线元件。 本系统和方法涉及允许每个天线元件的最大使用的方法，同时减少天线元件之间的耦合，以通过确保相同入射路径中的天线元件未被调谐到每个天线元件中来提高每个天线元件中的信号强度 相同频率或物理或电接近调谐到相同或相邻频率的元件。