利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

92 records (took 0.025 seconds)

    Universal remote radio head
    2.
    发明授权
    Universal remote radio head 有权

    公开(公告)号：US09136967B2

    公开(公告)日：2015-09-15

    申请号：US14187135

    申请日：2014-02-21

    Applicant: ADC Telecommunications, Inc.

    Inventor： Larry G. Fischer ,  Philip M. Wala ,  Dean Zavadsky ,  Lance K. Uyehara ,  Jody Forland

    IPC: H04J3/00 ,  H04W88/08 ,  H04H20/79 ,  H04N21/2385

    Abstract: A distributed base station radio system includes first channelized to broadband conversion unit that receives first downlink channelized data for first radio frequency band from first channelized radio frequency source; and first universal remote radio head communicatively coupled to first channelized to broadband conversion unit. First channelized to broadband conversion unit converts first downlink channelized data into a first downlink broadband signal. First channelized to broadband conversion unit communicates the first downlink broadband signal to first universal remote radio head. First universal remote radio head receives first downlink broadband signal. First universal remote radio head frequency converts the first downlink broadband signal into first downlink radio frequency signals in first radio frequency band. First universal remote radio head is further configured to transmit first downlink radio frequency signals in first radio frequency band to first subscriber unit.

    Conditional access system of CATV
    3.
    发明授权
    Conditional access system of CATV 失效
    有线电视条件接入系统

    公开(公告)号：US06871355B1

    公开(公告)日：2005-03-22

    申请号：US09546191

    申请日：2000-04-10

    Applicant: Kazunori Hashimoto

    Inventor： Kazunori Hashimoto

    IPC: H04N7/08 ,  H04H20/76 ,  H04H20/79 ,  H04H60/15 ,  H04H60/42 ,  H04H60/43 ,  H04H60/51 ,  H04H60/72 ,  H04N7/081 ,  H04N7/16 ,  H04N7/173 ,  H04N21/454 ,  H04N7/167

    CPC classification number: H04H60/15 ,  H04H20/76 ,  H04H20/79 ,  H04H60/42 ,  H04H60/43 ,  H04H60/51 ,  H04H60/72 ,  H04N7/163 ,  H04N21/4524

    Abstract: A CATV conditional access system equipped with a digital head end which transmits picture signals of digital programs in a batch mode to terminals provided within a plurality of areas. This digital head end transmits area codes for the respective areas and data about a list table to the terminals employed in the plural areas. In this list table, digital programs of not-yet-provided services for the respective areas are indicated. The area codes are used to recognize such areas belonging to the own terminals. Each of the terminals excludes the picture signal of the digital program of the not-yet-provided service in the related area by identifying the area code with the list table of the not-yet-service digital channel.

    Abstract translation: 一种配备有数字头端的CATV条件接入系统，其以批量模式将数字节目的图像信号发送到设置在多个区域内的终端。 该数字头端将各个区域的区域代码和关于列表的数据发送到在多个区域中采用的终端。 在该列表中，指出了针对各个区域的尚未提供的服务的数字节目。 区域码用于识别属于自己的终端的这些区域。 每个终端通过使用尚未提供服务的数字频道的列表表识别区域码来排除相关区域中尚未提供的服务的数字节目的图像信号。

    Broadband communication system and method therefor
    5.
    发明授权
    Broadband communication system and method therefor 失效
    宽带通信系统及其方法

    公开(公告)号：US5802449A

    公开(公告)日：1998-09-01

    申请号：US612419

    申请日：1996-03-07

    Applicant: Dieter Beller ,  Gert Grammel ,  Gerhard Elze

    Inventor： Dieter Beller ,  Gert Grammel ,  Gerhard Elze

    IPC: H04B10/272 ,  H04H20/79 ,  H04H60/15 ,  H04H60/80 ,  H04H60/97 ,  H04L12/28 ,  H04N7/173

    CPC classification number: H04H20/79 ,  H04B10/272 ,  H04H60/80 ,  H04H60/97 ,  H04L12/2801 ,  H04N7/17318 ,  H04H2201/70 ,  H04H60/15

    Abstract: A broadband communication system (SYS), which is used to distribute television, radio and video signals, is additionally used for transmitting data signals from one subscriber (TN) to another subscriber (TN). The center (ZE) of the broadband communication system (SYS) has a service-on-demand server (SOD) which contains a control facility (CONTROL). The control facility (CONTROL) receives information transmitted by a subscriber (TN) via the return channel (R) to the center, performs a frequency conversion and transmits the information via the downstream channel (V) to all the subscribers (TN) of the broadband communication system (SYS). The information contains a source address, a destination address and the subscriber-specific data to be transmitted. Only subscribers (TN) whose address coincides with the destination address are able to interpret the information through a modem MODEM.

    Abstract translation: 用于分发电视，无线电和视频信号的宽带通信系统（SYS）还用于将数据信号从一个用户（TN）发送到另一个用户（TN）。 宽带通信系统（SYS）的中心（ZE）具有包含控制设备（CONTROL）的服务点播服务器（SOD）。 控制设备（CONTROL）通过返回信道（R）将由用户（TN）发送的信息接收到中心，执行频率转换，并且经由下游信道（V）将信息发送到所有的用户（TN） 宽带通信系统（SYS）。 该信息包含要发送的源地址，目的地地址和用户特定数据。 只有地址与目的地地址一致的用户（TN）能够通过调制解调器MODEM来解释信息。

    Method for prioritizing channels in a communication system
    7.
    发明授权
    Method for prioritizing channels in a communication system 失效
    通信系统中信道优先级的方法

    公开(公告)号：US5623422A

    公开(公告)日：1997-04-22

    申请号：US361064

    申请日：1994-12-21

    Applicant: James M. Williams

    Inventor： James M. Williams

    IPC: H04H20/79 ,  H04H60/97 ,  H04J1/12 ,  H04L12/28 ,  H04M3/18 ,  H04M7/00 ,  H04N7/173 ,  H04H1/00

    CPC classification number: H04H20/12 ,  H04J1/12 ,  H04L12/2801 ,  H04M3/18 ,  H04M7/006 ,  H04N7/17309 ,  H04H20/79 ,  H04H60/97

    Abstract: Carriers (51) in a communication system (10) are prioritized (70) according to their usability. The carriers (51) that are below a usability threshold are placed on an ingress list (122). Those that exceed the threshold are placed on a preferred list (121). The carriers (51) on the preferred list (121) are then ranked (76) according to their word error rates (WER) and signal quality (SQ). The carriers (51) on the ingress list (122) have their usability re-checked periodically and may be transferred to the preferred list (121) if their usability does not again drop below threshold during a pre-set time period.

    Abstract translation: 通信系统（10）中的运营商（51）根据其可用性被优先（70）。 低于可用性阈值的载体（51）被放置在入口列表（122）上。 超过阈值的那些被放置在优选列表（121）上。 然后，根据它们的字错误率（WER）和信号质量（SQ）对优选列表（121）上的载波（51）进行排名（76）。 入口列表（122）上的载体（51）可以周期性地重新检查它们的可用性，并且如果它们的可用性在预设时间段内不再下降到阈值以下，则可以将其转移到优选列表（121）。

    Frequency agile broadband communications system
    8.
    发明授权
    Frequency agile broadband communications system 失效
    频率捷捷宽带通信系统

    公开(公告)号：US5594726A

    公开(公告)日：1997-01-14

    申请号：US219848

    申请日：1994-03-30

    Applicant: Leo J. Thompson ,  Gregory T. Dubberly ,  John A. Ritchie, Jr.

    Inventor： Leo J. Thompson ,  Gregory T. Dubberly ,  John A. Ritchie, Jr.

    IPC: H04J1/00 ,  H04H20/79 ,  H04H20/81 ,  H04H60/96 ,  H04H60/97 ,  H04J1/12 ,  H04J3/16 ,  H04L12/28 ,  H04L12/413 ,  H04M3/00 ,  H04M7/00 ,  H04N7/10 ,  H04N7/173 ,  H04Q11/04

    CPC classification number: H04H20/79 ,  H04H20/81 ,  H04H60/97 ,  H04J1/12 ,  H04J3/1623 ,  H04L12/2801 ,  H04M7/006 ,  H04N7/10 ,  H04N7/17309 ,  H04Q11/0478 ,  H04H60/96 ,  H04J2203/0041 ,  H04J2203/0089 ,  H04L12/413 ,  H04N2007/1739 ,  H04Q2213/13332

    Abstract: A broadband communications system for coupling telephony or other digital networks to a CATV network. The system transmits a multiplex of telephony signals in the forward band of the CATV network. Each forward channel is QPR modulated on a carrier and contains multiple subscriber telephony signals. The forward telephony channels are demodulated and demultiplexed by a plurality of subscriber terminals into the individual telephony signals directed to an addressed subscriber. Audio and control signals returning from the subscriber are digitized into standard telephony signals and QPSK modulated on a carrier onto the reverse band of the CATV network. The multiplicity of reverse band telephony channels are demodulated and multiplexed into a standard telephony signal which is directly interfaced to the telephony network. The reverse band modulators are frequency agile and modulate telephony signals from a subscriber in a selected one or more frequency subbands in the reverse band of the subscription network, so as to provide selectably changeable frequencies and selectably variable bandwidth in the reverse band commensurate with a selected subscriber communication feature. e.g. a single voice line, multiple voice lines, ISDN service, data communications services, security monitoring services, etc.

    Abstract translation: 用于将电话或其他数字网络耦合到CATV网络的宽带通信系统。 该系统在CATV网络的前向频带中发送电话信号的复用。 每个前向信道在载波上进行QPR调制，并包含多个用户电话信号。 前向电话信道由多个用户终端解调和解复用为针对寻址订户的各个电话信号。 从用户返回的音频和控制信号被数字化为标准电话信号，并在载波上QPSK调制到CATV网络的反向频带上。 反向频带电话信道的多样性被解调和多路复用到与电话网络直接接口的标准电话信号中。 反向频带调制器是对来自订阅网络的反向频带中所选择的一个或多个频率子带中的用户的频率敏捷和调制电话信号，以便提供可选择地可变频率和可选择地在与所选择的 用户通信功能。 例如 单个语音线路，多条语音线路，ISDN服务，数据通信服务，安全监控服务等。

    Reverse path allocation and contention resolution scheme for a broadband communications system
    9.
    发明授权
    Reverse path allocation and contention resolution scheme for a broadband communications system 失效
    宽带通信系统的反向路径分配和争用解决方案

    公开(公告)号：US5581555A

    公开(公告)日：1996-12-03

    申请号：US475220

    申请日：1995-06-07

    Applicant: Gregory T. Dubberly ,  Thomas A. Bohannon

    Inventor： Gregory T. Dubberly ,  Thomas A. Bohannon

    IPC: H04H20/78 ,  H04H20/79 ,  H04H20/81 ,  H04H60/94 ,  H04H60/97 ,  H04J1/00 ,  H04J1/12 ,  H04J3/16 ,  H04L12/28 ,  H04L12/413 ,  H04L27/20 ,  H04L27/22 ,  H04M3/00 ,  H04M7/00 ,  H04M11/06 ,  H04N7/10 ,  H04N7/14 ,  H04N7/173 ,  H04Q11/04 ,  H04H1/08

    CPC classification number: H04Q11/0478 ,  H04H20/78 ,  H04H20/79 ,  H04H20/81 ,  H04H60/94 ,  H04H60/97 ,  H04J1/12 ,  H04J3/1623 ,  H04L12/2801 ,  H04M7/006 ,  H04N7/10 ,  H04N7/14 ,  H04N7/17309 ,  H04J2203/0041 ,  H04J2203/0089 ,  H04L12/413 ,  H04N2007/1739 ,  H04Q2213/13332

    Abstract: A broadband communications system for coupling telephony or other digital networks to a CATV network. The system transmits a multiplex of telephony signals in the forward band of the CATV network. The forward telephony channels are demodulated and demultiplexed by a plurality of subscriber terminals into the individual telephony signals directed to an addressed subscriber. Signals returning from subscribers are digitized into standard telephony signals onto the reverse band of the CATV network, and demodulated and multiplexed into a standard telephony signal that is interfaced to the telephony network. A multiplicity of subscribers are initially assigned to a selected reverse band channel. If more than one subscriber contends for use of the reverse channel by transmitting in the channel, signals from the contending subscribers interfere and prevent any subscriber's identity from being decoded and acknowledged. The contending subscribers wait for a random wait time and re-attempt to transmit. Upon transmission re-attempt, one of the subscribers (typically the one with the shortest wait time) will successfully gain access to the reverse channel, and the other subscribers are assigned to a different reverse channel.

    Abstract translation: 用于将电话或其他数字网络耦合到CATV网络的宽带通信系统。 该系统在CATV网络的前向频带中发送电话信号的复用。 前向电话信道由多个用户终端解调和解复用为针对寻址订户的各个电话信号。 从订户返回的信号被数字化为标准电话信号到CATV网络的反向频带上，并被解调和多路复用成与电话网络接口的标准电话信号。 最初将多个用户分配给所选择的反向频带信道。 如果多个用户通过在信道中发送来争用使用反向信道，则来自竞争订户的信号干扰并阻止任何订户的身份被解码和确认。 竞争用户等待随机等待时间并重新尝试传输。 在传输重新尝试时，其中一个用户（通常是具有最短等待时间的用户）将成功地访问反向信道，并且其他用户被分配到不同的反向信道。

    System for delivering digital sound, graphics, real time files and data via cable
    10.
    发明授权
    System for delivering digital sound, graphics, real time files and data via cable 失效
    通过电缆传送数字声音，图形，实时文件和数据的系统

    公开(公告)号：US5394182A

    公开(公告)日：1995-02-28

    申请号：US34307

    申请日：1993-03-22

    Applicant: Walter R. Klappert ,  Michael L. La Jole

    Inventor： Walter R. Klappert ,  Michael L. La Jole

    IPC: H04H20/79 ,  H04N7/04 ,  H04N7/08 ,  H04N7/10 ,  H04N7/16

    CPC classification number: H04H20/79 ,  H04N7/04 ,  H04N7/08 ,  H04N7/10 ,  H04N7/16

    Abstract: A method and apparatus for sending digital audio data and/or digital graphics within available bandwidth used to carry television signals into end-user homes and offices, such as, additional bandwidth which will become available as optical fiber replaces cable currently in use to carry cable television programming. The invention also makes it possible for digital audio and graphics, including computer generated data such as output from a word processing, paint or real time file builder program, to be sent over any regular television channel on any cable system. The system could even be used on a television signal broadcast at a normal broadcast frequency if the signal received in the home is of high enough quality. The system utilizes existing cable decoder boxes which have been improved by the addition of a decoder which decodes a composite or RF video signal containing digitized audio to audio, and optional additional signal processing, for playback or recording by existing consumer electronics audio equipment.

    Abstract translation: 一种用于在可用带宽内发送数字音频数据和/或数字图形的方法和装置，用于将电视信号传送到最终用户家庭和办公室，例如当光纤替代当前使用的电缆以承载电缆时将成为可用的附加带宽 电视节目制作。 本发明还使得包括计算机生成的数据（例如来自文字处理，绘画或实时文件构建程序的输出）的数字音频和图形可以通过任何电缆系统上的任何常规电视频道发送。 如果在家庭中接收到的信号质量足够高，则该系统甚至可以用于以正常广播频率的电视信号广播。 该系统利用已经通过添加解码器而改进的现有电缆解码器盒，解码器将包含数字化音频的复合或RF视频信号解码为音频，以及可选的附加信号处理，用于由现有的消费电子音频设备进行回放或记录。

Patent Agency Ranking