TIME STAMP CORRECTION IN ATM NETWORK
    142.
    发明申请
    TIME STAMP CORRECTION IN ATM NETWORK 审中-公开
    ATM网络中的时间戳校正

    公开(公告)号:WO1995019670A1

    公开(公告)日:1995-07-20

    申请号:PCT/US1995000246

    申请日:1995-01-09

    Abstract: A packet of data, which contains a timestamp value and which is to be transmitted through an ATM network, is encapsulated in a convergence sublayer protocol data unit (92) having a header (96) and a payload (94). The CS-PDU is then segmented into successive segments (106, 108, 110 and 112) with one segment (106) containing the CS-PDU header (96). The segments (106, 108, 110 and 112) are inserted in respective ATM cells (114, 116, 118 and 120) and transmitted through the ATM network. At each node in the ATM network, any variable delays imposed on the cell (114) that contains CS-PDU header (96) are added to a time reference correction field (100) in the CS-PDU header (96). At a destination node, the accumulated delay value in the TRC field (100) of the CS-PDU header (96) can be added to the timestamp value of the packet to compensate for the variable delays imposed by the ATM network.

    Abstract translation: 包含时间戳值并且要通过ATM网络发送的数据包被封装在具有报头(96)和有效载荷(94)的汇聚子层协议数据单元(92)中。 然后,CS-PDU被分段成具有包含CS-PDU报头(96)的一个段(106)的连续段(106,108,110和112)。 这些段(106,108,110和112)被插入相应的ATM信元(114,116,118和120)中并通过ATM网络传输。 在ATM网络中的每个节点处,施加在包含CS-PDU报头(96)的小区(114)上的任何可变延迟都被添加到CS-PDU报头(96)中的时间基准校正字段(100)。 在目的地节点,CS-PDU头(96)的TRC字段(100)中的累积延迟值可以被添加到分组的时间戳值,以补偿由ATM网络施加的可变延迟。

    MULTI-SERVICE DATA RECEIVER ARCHITECTURE
    143.
    发明申请
    MULTI-SERVICE DATA RECEIVER ARCHITECTURE 审中-公开
    多业务数据接收机架构

    公开(公告)号:WO1995015656A1

    公开(公告)日:1995-06-08

    申请号:PCT/US1994013710

    申请日:1994-12-02

    Abstract: A flexible architecture for a digital data receiver including a demultiplexer (612) is provided which allows modular addition of data processors (630, 620, 618, 622) with low complexity and minimal memory requirements. The demultiplexer operates on a scalable frame-based multiplex signal, and interprets the multiplex control data at the start of the frame. With the information interpreted from the control data, the demultiplexer separates individual data services and optionally decrypts them. Data, a data clock and an error flag signal are presented to the demultiplexer input. According to a service requested by a user, the demultiplexer outputs decrypted data clock, error flag and service enable signals in a flow-through manner (610) to an appropriate data processor without data storage.

    Abstract translation: 提供了包括解复用器(612)的数字数据接收机的灵活架构,其允许以低复杂度和最小存储器要求对数据处理器(630,620,618,622)进行模块化添加。 解复用器在可缩放的基于帧的多路复用信号上操作,并且在帧的开始处解释多路复用控制数据。 利用从控制数据解释的信息,解复用器分离单独的数据服务并且可选地解密它们。 数据,数据时钟和错误标志信号被呈现给解复用器输入。 根据用户请求的服务,多路分解器以解密的方式(610)将解密的数据时钟,错误标志和服务启用信号输出到适当的数据处理器,而无需数据存储。

    MULTIPLEXING DIGITAL SIGNALS FOR TRANSMISSION TO REMOTE LOCATIONS
    144.
    发明申请
    MULTIPLEXING DIGITAL SIGNALS FOR TRANSMISSION TO REMOTE LOCATIONS 审中-公开
    多路复用数字信号传输到远程位置

    公开(公告)号:WO1995015655A1

    公开(公告)日:1995-06-08

    申请号:PCT/US1994013664

    申请日:1994-12-05

    Abstract: A multiplex frame format for transmitting digital data in a data transmission system comprises a PACKETS portion comprising a highly error-protected region, a region having only Reed Solomon encoding as an error protection measure, and a portion including low speed data. The frame format also comprises portions for transmitting medium (AUDIO) and high speed (VIDEO) data streams following the PACKETS portion. Prior to transmission, the composed frame comprising the PACKETS, AUDIO and VIDEO portions is interleaved and the BLOCK SYNC and FRAME SYNC are added (110). A multiplex structure control packet word of the PACKETS portion immediately follows FRAME SYNC. Thus, the FRAME SYNC word defines where interleaving begins. A demultiplexer (156) in concert with a microcontroller (158) of a decoder (154, 155) decodes the multiplex structure control word and related PACKETS and outputs digital data streams to related output peripheral processors (157).

    Abstract translation: 用于在数据传输系统中发送数字数据的复用帧格式包括包含高度错误保护区域的分组部分,仅具有里德所罗门编码的区域作为错误保护度量,以及包括低速数据的部分。 帧格式还包括用于在PACKETS部分之后传送介质(AUDIO)和高速(VIDEO)数据流的部分。 在发送之前,包括PACKETS,AUDIO和VIDEO部分的合成帧被交织,并且添加BLOCK SYNC和FRAME SYNC(110)。 PACKETS部分的多路复用结构控制分组字直接跟随FRAME SYNC。 因此,FRAME SYNC字定义了交织开始的地方。 与解码器(154,155)的微控制器(158)一致地解复用器(156)解码多路复用结构控制字和相关的分组,并将数字数据流输出到相关的输出外围处理器(157)。

    SYSTEM AND METHOD FOR PROVIDING COMPRESSED DIGITAL TELETEXT SERVICES AND TELETEXT SUPPORT SERVICES
    145.
    发明申请
    SYSTEM AND METHOD FOR PROVIDING COMPRESSED DIGITAL TELETEXT SERVICES AND TELETEXT SUPPORT SERVICES 审中-公开
    用于提供压缩数字电话服务和电话支持服务的系统和方法

    公开(公告)号:WO1995015647A1

    公开(公告)日:1995-06-08

    申请号:PCT/US1994013846

    申请日:1994-12-02

    Abstract: A teletext system provides teletext services and teletext support services in a multiservice communication system. Multiplex data streams for a plurality of services, including teletex data, are transmitted in a sequence of frames between a transmitter location and a receiver location. Teletext information is transmitted in the format of a header packet and a data packet. The header packet contains information identifying the teletext information according to page number as well as other filter fields, such as language (filter 4), time zone (filter 2), etc. By appropriate selection of the values of the filter fields, the operator is afforded greater flexibility in providing a variety of classes of service and service support to subscribers. In addition, the system may easily be reconfigured to support the addition of services or the cancellation of services.

    Abstract translation: 图文电视系统在多服务通信系统中提供图文电视服务和图文电视支持服务。 用于多个服务(包括电信数据)的多路复用数据流以发射机位置和接收机位置之间的帧序列发送。 图文信息以标题包和数据包的格式发送。 标题分组包含根据页码以及其他过滤器字段(例如语言(过滤器4),时区(过滤器2)等)识别图文信息的信息。通过适当地选择过滤器字段的值,操作者 在为用户提供各种服务和服务支持方面提供了更大的灵活性。 此外,该系统可以容易地重新配置以支持服务的增加或取消服务。

    SYSTEM AND METHOD FOR SIMULTANEOUSLY AUTHORIZING MULTIPLE VIRTUAL CHANNELS
    146.
    发明申请
    SYSTEM AND METHOD FOR SIMULTANEOUSLY AUTHORIZING MULTIPLE VIRTUAL CHANNELS 审中-公开
    同时授权多个虚拟通道的系统和方法

    公开(公告)号:WO1995015632A1

    公开(公告)日:1995-06-08

    申请号:PCT/US1994013807

    申请日:1994-12-02

    Abstract: A transmitter site (100) with an encoder and a receiver site (150) are in the context of a satellite communication system. The transmitter site (100) includes: audio/video compressors (101(l) to 101(m)); low-speed data formatters (105(l) to 105(n)); a multiplexer (110); a control computer (120); a modulator/upconverter (130); and, an antenna (140). The signal from the transmitter site (100) goes through a satellite (160) to the receiver site (150). The receiver site (150) includes: an antenna (151); a tuner/demodulator (154); a clock-plus-data receiver (155); a demultiplexer (158); data processors (152); subscriber equipment (159); a display control processor (153); a digital compression in-board security element (157); and, a selector (156).

    Abstract translation: 具有编码器和接收器站点(150)的发射机站点(100)在卫星通信系统的上下文中。 发送站点(100)包括:音频/视频压缩器(101(1)至101(m)); 低速数据格式化器(105(1)〜105(n)); 多路复用器(110); 控制计算机(120); 调制器/上变频器(130); 和天线(140)。 来自发射机站点(100)的信号经过卫星(160)到接收站点(150)。 接收器站点(150)包括:天线(151); 调谐器/解调器(154); 时钟加数据接收器(155); 解复用器(158); 数据处理器(152); 用户设备(159); 显示控制处理器(153); 数字压缩板载安全元件(157); 和选择器(156)。

    INTERACTIVE INFORMATION SERVICES CONTROL SYSTEM
    147.
    发明申请
    INTERACTIVE INFORMATION SERVICES CONTROL SYSTEM 审中-公开
    互动信息服务控制系统

    公开(公告)号:WO1995013681A1

    公开(公告)日:1995-05-18

    申请号:PCT/US1994012585

    申请日:1994-11-03

    Abstract: A digital video, audio and data distribution system which enables a set top terminal (STT) (30) associated with a customer's television set or the information presentation device to request interactive digital video, audio and data control system messages transmitted via a bi-directional signalling path. The requested interactive service is transmitted from the service provider over a portion of the banwidth of a broadband transmission network (128) which is dedicated to interactive digital services. A video Session Connection (VSC) is provided for setting up and maintaining interactive sessions between the set-top terminal and a video service provider during the time the interactive programming is provided to the customer. The set top terminal (30) and service provider (20) establish the Video Session Connection via a two way signalling path within the bandwidth of the transmission medium into the customer's home.

    Abstract translation: 一种数字视频,音频和数据分配系统,其使得与客户的电视机或信息呈现设备相关联的机顶终端(STT)(30)能够请求交互式数字视频,音频和数据控制系统消息通过双向传输 信令路径。 通过专用于交互式数字业务的宽带传输网络(128)的一部分宽带传输,从服务提供商发送所请求的交互服务。 提供视频会话连接(VSC),用于在向客户提供交互式节目编排时,在机顶终端和视频服务提供商之间建立和维护交互式会话。 机顶终端(30)和服务提供商(20)通过传输介质的带宽内的双向信令路径建立视频会话连接到客户的家中。

    MULTI-POSITION ELECTRICAL CONNECTOR AND ELECTRICAL DEVICES INCORPORATING SAME
    148.
    发明申请
    MULTI-POSITION ELECTRICAL CONNECTOR AND ELECTRICAL DEVICES INCORPORATING SAME 审中-公开
    多位置电气连接器和与其并入的电气设备

    公开(公告)号:WO1995004392A1

    公开(公告)日:1995-02-09

    申请号:PCT/US1994008219

    申请日:1994-07-28

    Abstract: A plug (2) and socket (3) form a simple and compact electrical connector (1) for selectively distributing an electrical signal along different paths (21a, b, c). The plug (2) and socket (3) are symmetrically arranged so that they are engageable with each other in different positions to achieve different electrical connections. The electrical connector (1) saves printed circuit board space (19), minimizes parts, and improves switching flexibility in an RF signal amplification device (Figure 2) for amplifying an RF (e.g., CATV) signal transmitted along an RF cable (41), and in a power coupler (Figure 3) coupling an AC power signal (53) into an RF cable (41).

    Abstract translation: 插头(2)和插座(3)形成简单紧凑的电连接器(1),用于沿着不同的路径(21a,b,c)选择性地分配电信号。 插头(2)和插座(3)对称地布置成使得它们可以在不同的位置彼此接合以实现不同的电连接。 电连接器(1)节省印刷电路板空间(19),使部件最小化,并提高RF信号放大装置(图2)中的开关灵活性,用于放大沿着RF电缆(41)传输的RF(例如,CATV)信号, 以及将AC功率信号(53)耦合到RF电缆(41)的功率耦合器(图3)中。

    DISPLAY SYSTEM WITH PROGRAMMABLE DISPLAY PARAMETERS
    149.
    发明申请
    DISPLAY SYSTEM WITH PROGRAMMABLE DISPLAY PARAMETERS 审中-公开
    具有可编程显示参数的显示系统

    公开(公告)号:WO1994029840A1

    公开(公告)日:1994-12-22

    申请号:PCT/US1994006341

    申请日:1994-06-06

    Abstract: A display system for providing programmable on-screen displays for a subscriber terminal, includes a control processor (128) and a display processor (127) which generates such displays from stored display information and display attributes. The control processor (128) executes display routines to configure the display processor (127) and to load the display data into a display memory. The display routines, display attributes and display data are programmable and can be varied for optimal use of the display processor. In one implementation, such information can be modified by changing the programming in non-volatile memory of the subscriber terminal, either by switching ROM (134) or Flash EPROM ICs (326) or by a plug in module (138). Another implementation includes downloading the information with other executable code and data in the read/write portions of the non-volatile memory. A third implementation provides specialized display transactions for the information which, in a preferred embodiment, envisions a high level screen definition language whose commands can be compiled into the formats of the display routines, display attributes and display data.

    Abstract translation: 一种用于为用户终端提供可编程屏幕显示的显示系统,包括从存储的显示信息和显示属性产生这种显示的控制处理器(128)和显示处理器(127)。 控制处理器(128)执行显示程序以配置显示处理器(127)并将显示数据加载到显示存储器中。 显示程序,显示属性和显示数据是可编程的,并且可以变化以优化显示处理器的使用。 在一个实现中,可以通过切换ROM(134)或闪存EPROM IC(326)或插入模块(138)来改变用户终端的非易失性存储器中的编程来修改这些信息。 另一实现包括在非易失性存储器的读/写部分中使用其他可执行代码和数据来下载信息。 第三个实现为信息提供了专门的显示事务,在优选实施例中,它可以设想高级屏幕定义语言,其命令可以被编译成显示例程,显示属性和显示数据的格式。

Patent Agency Ranking