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    • 7. 发明申请
    • FAULT TOLERANT SERVICE-PROVIDING APPARATUS FOR USE IN A TELECOMMUNICATIONS NETWORK
    • 在电信网络中使用的容错服务提供设备
    • WO1994030027A1
    • 1994-12-22
    • PCT/GB1994001257
    • 1994-06-10
    • HEWLETT-PACKARD COMPANYLOW, Colin
    • HEWLETT-PACKARD COMPANY
    • H04Q11/04
    • H04Q3/0079H04Q3/0029H04Q11/0407H04Q2213/13517H04Q2213/13521H04Q2213/13565
    • A telecommunications network architecture is known comprising a switching system for effecting basic call processing to set up, maintain and clear calls, and service-providing means (SPA) communicating with said switching system for providing services additional to said basic call processing. Due to the high availability requirements typically placed on telecommunications networks, the service providing means will generally need to be of a fault-tolerant design. A fault-tolerant architecture is provided that relies on the checkpointing to a reliable store (55) of state data for services currently being provided from first service logic (50) of the service-providing means; should the first service logic (50) fail, a second service logic (52) is brought into operation and provided with required state data on current services from the backup store (55). To reduce the amount of checkpointing of data by the first logic (50), state data is only checkpointeed when the correspponding call has reached a stable phase, the loss of a call during setup being much more acceptable than after it is been established.
    • 已知一种电信网络架构,其包括用于实现基本呼叫处理以建立,维护和清除呼叫的交换系统,以及与所述交换系统通信的服务提供装置(SPA),用于为所述基本呼叫处理提供附加服务。 由于通常放置在电信网络上的高可用性要求,服务提供装置通常需要具有容错设计。 提供了一种容错架构,其依赖于对服务提供装置的第一服务逻辑(50)提供的服务的状态数据的可靠存储(55)的检查点; 如果第一服务逻辑(50)失败,则第二服务逻辑(52)被投入运行,并且从备用存储器(55)提供关于当前服务的所需状态数据。 为了减少第一逻辑(50)对数据的检查点数量,仅当相应的呼叫已经达到稳定阶段时才会检查状态数据,在建立过程中的呼叫丢失比建立之后更为可接受。
    • 8. 发明申请
    • FOAM-FILLED CAPS FOR SEALING INKJET PRINTHEADS
    • 用于密封喷嘴的泡沫填充胶囊
    • WO1998018634A1
    • 1998-05-07
    • PCT/US1997019724
    • 1997-10-29
    • HEWLETT-PACKARD COMPANYDeROOS, Stephen, M.MICHAEL, Donald, L.GREEN, James, E.HARVEY, James, A.
    • HEWLETT-PACKARD COMPANY
    • B41J02/165
    • B41J2/16511B41J2/16508
    • A foam-filled cap (200) sealing ink-ejecting nozzles of an inkjet printhead in a printing mechanism has a two-layer structure, with an outer skin layer (215) of an elastomer, and a second foam core layer (220) inside the skin. The skin defines a sealing lip that surrounds the nozzles when the cap (200) is in a sealing position to avoid unnecessary drying of the ink. The skin has an interior surface (216) that defines a cavity under the sealing lip. The foam core (220), located within the cavity, may be formed by expanding a foam preform or by injecting raw foam into the cavity. An insert (260) may be molded into the cap structure (200) for use in mounting the cap in the printing mechanism. An optional backing layer molded to the structure is used to attach a vent basin to the cap. A method of constructing this cap, and a printing mechanism having this cap, are also described.
    • 在打印机构中的喷墨打印头的喷墨喷嘴密封的泡沫填充盖(200)具有双层结构,弹性体的外表皮层(215)和第二泡沫芯层(220)内部 皮。 当盖(200)处于密封位置时,皮肤限定围绕喷嘴的密封唇,以避免油墨的不必要的干燥。 皮肤具有限定密封唇下方的空腔的内表面(216)。 位于空腔内的泡沫芯(220)可以通过将泡沫预制件膨胀或通过将原始泡沫注入空腔来形成。 插入件(260)可以模制到盖结构(200)中,以用于将盖安装在打印机构中。 使用模制到该结构的任选的背衬层将排气孔附接到盖上。 还描述了构造该盖的方法和具有该盖的打印机构。
    • 10. 发明申请
    • DIRECT CONTACT SCANNER AND RELATED METHOD
    • 直接联系扫描仪及相关方法
    • WO1997034288A1
    • 1997-09-18
    • PCT/US1997003225
    • 1997-02-28
    • HEWLETT-PACKARD COMPANY
    • HEWLETT-PACKARD COMPANYDIAS, J., FlemingMELTON, Hewlett, E., Jr.
    • G10K11/24
    • A61B8/12A61B8/445A61B8/4461A61B2017/22017G10K11/24
    • A direct contact scanner (101) uses a fiber acoustic waveguide (107, 141) to convey ultrasound from an ultrasound transducer (117) to a direct contact area (122). The waveguide extends from a main body (105) of the scanner into an oblong nose (109), and terminates in a deflector (149). To minimize thickness of the nose, the waveguide and deflector are rotated about an ultrasound transmission axis (119) of the waveguide, enabling the scanner to be used in a variety of situations where quarters are cramped. A coupling fluid (111) conveys ultrasound between the deflector (149) and a radome (113), which directly contacts the object (103) to be scanned. Using the waveguide, an ultrasound transducer and supporting electronics (118) may be distanced from the direct contact area (122) and separated from the fluid (111), thereby insulating the fluid from possible electronic leakage currents and heat.
    • 直接接触扫描仪(101)使用纤维声波导(107,141)将超声波从超声换能器(117)传送到直接接触区域(122)。 波导从扫描仪的主体(105)延伸成长方形的鼻子(109),并终止在偏转器(149)中。 为了最小化鼻子的厚度,波导和偏转器围绕波导的超声波传播轴线(119)旋转,使得扫描仪能够在季节狭窄的各种情况下使用。 耦合流体(111)在偏转器(149)和直接接触待扫描对象(103)的天线罩(113)之间传送超声波。 使用波导,超声换能器和支撑电子器件(118)可以与直接接触区域(122)分开并与流体(111)分离,从而将流体与可能的电子泄漏电流和热量隔离。