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    JOINTING ARRANGEMENT
    22.
    发明申请
    JOINTING ARRANGEMENT 审中-公开
    联接安排

    公开(公告)号：WO1985002269A1

    公开(公告)日：1985-05-23

    申请号：PCT/GB1984000394

    申请日：1984-11-15

    Applicant: BRITISH TELECOMMUNICATIONS PLC ,  JENKINS, Peter, David

    Inventor： BRITISH TELECOMMUNICATIONS PLC

    IPC: G02B06/44

    CPC classification number: G02B6/4448 ,  G02B6/4417

    Abstract: A joint between a submarine optical fibre cable (7) and a repeater housing (3) is divided into two parts coupled by a section of flexible pressure resistant hose (1). The hose (1) is attached at one end to the repeater housing (3) and at the other end to a modified cable to cable joint (6). The cable (7) terminates at the modified cable to cable joint (6) and optical signals and electrical power are transmitted from the cable (7) to the repeater apparatus inside the repeater housing (1) by means of optical fibre tails and insulated electrical conductors which extend from the modified cable to cable joint, along the hose (1), through a feed through arrangement at the repeater housing bulkhead (2) and as far as the repeater apparatus.

    IMAGE SYNTHESIS
    25.
    发明申请
    IMAGE SYNTHESIS 审中-公开
    图像合成

    公开(公告)号：WO1997036288A1

    公开(公告)日：1997-10-02

    申请号：PCT/GB1997000818

    申请日：1997-03-24

    Applicant: BRITISH TELECOMMUNICATIONS PLC ,  BREEN, Andrew, Paul ,  BOWERS, Emma, Jane

    Inventor： BRITISH TELECOMMUNICATIONS PLC

    IPC: G10L09/20

    CPC classification number: G06T13/40 ,  G06T13/205 ,  G10L2021/105 ,  H04N19/20

    Abstract: Synthesis of a moving picture of a face (e.g. to accompany synthetic speech) is performed by converting an input phoneme string into a sequence of mouth shapes or visemes. Specifically a shape is generated for each vowel and for each transition involving a consonant.

    Abstract translation: 通过将输入音素串转换为口形或视角序列来执行脸部的运动图像（例如伴随合成语音）的合成。 具体地，对于每个元音以及涉及辅音的每个过渡产生形状。

    ESTABLISHING COMMUNICATION IN A PACKET DATA NETWORK
    26.
    发明申请
    ESTABLISHING COMMUNICATION IN A PACKET DATA NETWORK 审中-公开
    建立分组数据网络中的通信

    公开(公告)号：WO1997030537A1

    公开(公告)日：1997-08-21

    申请号：PCT/GB1997000348

    申请日：1997-02-07

    Applicant: BRITISH TELECOMMUNICATIONS PLC

    Inventor： BRITISH TELECOMMUNICATIONS PLC ,  HARRIS, Stephen ,  GITTINS, Christopher, John

    IPC: H04L29/06

    CPC classification number: H04L29/12103 ,  H04L29/06 ,  H04L61/1535

    Abstract: Communications are established between a source user (305) and a destination user (307). Data is transmitted between these users in packets (204) having a destination address (205) and communication data (206). A destination name is identified in a first packet and this packet is transmitted to a service control platform (301) identifying, in its communication data, a destination name. A packet is then returned from the control platform (301) to the originating source (305) identifying a real contactable address for the identified destination (307). Subsequent packets of data are generated at the source (305) for transmission to the destination (307) wherein the transmitted packets have the actual destination address, as returned from the service platform, appended thereto.

    Abstract translation: 在源用户（305）和目的地用户（307）之间建立通信。 在具有目的地地址（205）和通信数据（206）的分组（204）中在这些用户之间传送数据。 目的地名称在第一分组中被识别，并且该分组被发送到在其通信数据中标识目的地名称的服务控制平台（301）。 然后，将分组从控制平台（301）返回到标识目的地（307）的真实可接触地址的始发源（305）。 在源（305）处生成数据的后续数据包以发送到目的地（307），其中发送的分组具有附加到其上的从服务平台返回的实际目的地地址。

    SPECIFYING INDEXES FOR RELATIONAL DATABASES
    27.
    发明申请
    SPECIFYING INDEXES FOR RELATIONAL DATABASES 审中-公开
    指定相关数据库的索引

    公开(公告)号：WO1997022939A1

    公开(公告)日：1997-06-26

    申请号：PCT/GB1996003102

    申请日：1996-12-16

    Applicant: BRITISH TELECOMMUNICATIONS PLC ,  LENZIE, Robert, S.

    Inventor： BRITISH TELECOMMUNICATIONS PLC

    IPC: G06F17/30

    CPC classification number: G06F17/30536 ,  G06F17/30336 ,  Y10S707/99942 ,  Y10S707/99945

    Abstract: An index set for a database is specified by analysing a sample (718) of SQL statements applied to the database (701). Indexes (707) are identified that could assist in the execution of the analysed statements and levels of improved operation are evaluated for each of said indexes. The evaluated levels are then processed (708) to specify an index set for inclusion on the database. The database may not include sufficient storage (702) for all of the specified indexes to be included, therefore the available storage space is allocated and indexes are selected on a prioritized basis.

    Abstract translation: 通过分析应用于数据库的SQL语句的样本（718）来指定数据库的索引集（701）。 确定可以协助执行分析报表的索引（707），并对每个所述索引评估改进操作的级别。 然后处理评估级别（708）以指定要包含在数据库中的索引集。 数据库可能不包括要包括的所有指定索引的足够的存储（702），因此分配可用存储空间，并且以优先级为基础选择索引。

    POLARISATION MODULATION
    28.
    发明申请
    POLARISATION MODULATION 审中-公开
    极化调制

    公开(公告)号：WO1996007951A1

    公开(公告)日：1996-03-14

    申请号：PCT/GB1995002123

    申请日：1995-09-07

    Applicant: BRITISH TELECOMMUNICATIONS PLC ,  KERSHAW, Stephen, Vincent ,  TOWNSEND, Paul, David

    Inventor： BRITISH TELECOMMUNICATIONS PLC

    IPC: G02F01/1347

    CPC classification number: G02F1/13471 ,  G02F1/141 ,  G02F1/1418 ,  G02F2203/07 ,  H04L9/0858

    Abstract: A method of modulating an optical signal includes passing the signal through a liquid crystal modulator thereby modulating the polarisation state. The liquid crystal modulator comprises a plurality of individually switchable liquid crystal cells. These cells are arranged in series between an input and an output of the modulator. The modulator is set in different configurations corresponding to different combinations of settings of the individual liquid crystal cells. It applies one of a multiplicity of discrete polarisation modulation states to the input signal depending upon the configuration chosen. The liquid crystal material may be a ferro-electric material and the modulator may comprise two or three such liquid crystal cells configured, e.g. as half-wave cells or quarter-wave cells. The modulator may be used to modulate a single-photon signal in a method of key distribution using quantum cryptography.

    Abstract translation: 调制光信号的方法包括使信号通过液晶调制器从而调制偏振状态。 液晶调制器包括多个可单独切换的液晶单元。 这些单元串联布置在调制器的输入和输出之间。 将调制器设置成与各个液晶单元的不同设置组合相对应的不同配置。 根据所选择的配置，它将多个离散极化调制状态中的一个应用于输入信号。 液晶材料可以是铁电材料，调制器可以包括两个或三个这样的液晶单元， 作为半波单元或四分之一波长的单元。 调制器可以用于使用量子加密技术在密钥分发方法中调制单光子信号。

    OPTICAL AMPLIFIERS
    29.
    发明申请
    OPTICAL AMPLIFIERS 审中-公开
    光放大器

    公开(公告)号：WO1987007091A1

    公开(公告)日：1987-11-19

    申请号：PCT/GB1987000298

    申请日：1987-05-06

    Applicant: BRITISH TELECOMMUNICATIONS PLC ,  O'MAHONY, Michael, John

    Inventor： BRITISH TELECOMMUNICATIONS PLC

    IPC: H01S03/00

    CPC classification number: H04B10/2914 ,  G02B6/4202 ,  G02B6/4219 ,  H01S5/028 ,  H01S5/0683 ,  H01S5/50

    Abstract: A semiconductor travelling wave optical amplifier is presented in a new configuration. An amplifier chip (20) has the rear facet (23) provided with a reflective coating. Optical signals are input and amplified signals are output via optical fibres (21, 25, 30) and directional coupler (24). A single fibre-to-amplifier alignment is required between fibre tail (25) and the front facet (22). The front facet (22) is provided with a very low reflectivity coating. In this configuration the amplification is increased in comparison with the conventional in-line amplifier configuration.

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