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    • 51. 发明申请
    • APPARATUS AND METHOD FOR DRIVING A VOICE COIL MOTOR OF A CAMERA LENS
    • 用于驱动摄像机镜头的声音线圈电机的装置和方法
    • US20150116579A1
    • 2015-04-30
    • US14063840
    • 2013-10-25
    • Hong ZhangQing YangHong Ru XuCheng Zhang
    • Hong ZhangQing YangHong Ru XuCheng Zhang
    • H04N5/232
    • H04N5/23212
    • The present invention relates to a device and method for driving an under damped voice coil motor (VCM) actuator of a camera lens. In one embodiment, the device for driving an under damped VCM actuator comprises a first generator operable to read a first manufacture data from an image signal processor (ISP) and to generate a half natural period, ½ Td, of the VCM actuator by selecting a value approximate to the first data in a first table of the device, a second generator operable to read a second manufacture data from the ISP and to generate the maximum overshoot, K, of the VCM actuator by selecting a value approximate to the second data in a second table of the device, an input shaping signal generator operable to read an input signal corresponding to a desired camera lens moving distance from the ISP and to generate a shaping signal according to the value of the half natural period and the maximum overshoot. The input shaping signal may be produced from second order, third order and fourth order input shaping function. The present invention also provides a simple implementation of a driver configuration to achieve a fast camera lens focus speed, yet robust to tolerate actual system deviation from a manufacture design.
    • 本发明涉及用于驱动照相机镜头的下阻尼音圈电机(VCM)致动器的装置和方法。 在一个实施例中,用于驱动下阻尼VCM致动器的装置包括第一发生器,其可操作以从图像信号处理器(ISP)读取第一制造数据,并且通过选择一个VCM致动器来产生半自然周期(1/2 Td) 值接近装置的第一表中的第一数据,第二发生器可操作以从ISP读取第二制造数据,并通过选择近似于第二数据的值来产生VCM致动器的最大过冲K 该设备的第二表,输入整形信号发生器,其可操作以读取对应于来自ISP的期望的相机镜头移动距离的输入信号,并根据半自然周期和最大过冲的值生成整形信号。 输入整形信号可以由二阶,三阶和四阶输入整形功能产生。 本发明还提供了驱动器配置的简单实现,以实现快速的相机镜头聚焦速度,而且可以耐受实际的系统与制造设计的偏差。
    • 53. 发明授权
    • System and method for managing wireless base station handoff information
    • 用于管理无线基站切换信息的系统和方法
    • US08553649B2
    • 2013-10-08
    • US13236192
    • 2011-09-19
    • Cheng ZhangHeng PanYanjun Yin
    • Cheng ZhangHeng PanYanjun Yin
    • H04W36/00
    • H04W8/20H04W36/08
    • The present invention is directed to a system and method which base stations send informational messages to neighbor base stations when conditions change, so that the neighbor base stations can update its database to keep itself current on the parameters (including availability, traffic load, modulation scheme, etc.) to use in effecting efficient base station to base station handoffs. In one embodiment, the receiving base station marks the time of the received message from a neighbor base station and if a new updated message is not received within a time window then the receiving base station assumes that there is a problem with that neighbor.
    • 本发明涉及一种系统和方法,当条件改变时,基站向相邻基站发送信息消息,使得邻近基站可以更新其数据库以保持自身最新的参数(包括可用性,业务负载,调制方案 等)用于实现有效的基站到基站切换。 在一个实施例中,接收基站标记来自相邻基站的接收到的消息的时间,并且如果在时间窗口内没有接收到新的更新的消息,则接收基站假设该邻居存在问题。
    • 54. 发明授权
    • Robotic manipulator
    • 机器人机器人
    • US08360820B2
    • 2013-01-29
    • US12627115
    • 2009-11-30
    • Shang-Xuan SongCheng Zhang
    • Shang-Xuan SongCheng Zhang
    • B24B49/00
    • B25J15/0616B25J11/0065
    • A robotic manipulator for clamping a workpiece includes a power source, a first rotary member, and a clamping mechanism. The first rotary member is connected to and rotated by the power source. The clamping mechanism is non-rotatably connected to the first rotary member and includes a first clamping member and a second clamping member capable of coupling to and decoupling from the first clamping member. The first clamping member and the second clamping member are coupled to each other. A receptacle is defined between the first clamping member and the second clamping member to receive the workpiece. The receptacle has a shape and size substantially the same as the workpiece.
    • 用于夹紧工件的机器人操纵器包括动力源,第一旋转构件和夹紧机构。 第一旋转构件与电源连接并由电源旋转。 夹紧机构不可旋转地连接到第一旋转构件,并且包括能够联接到第一夹紧构件和从第一夹紧构件脱离的第一夹紧构件和第二夹紧构件。 第一夹紧构件和第二夹紧构件彼此连接。 在第一夹紧构件和第二夹紧构件之间限定容纳件以容纳工件。 容器的形状和尺寸基本上与工件相同。
    • 57. 发明授权
    • Functionalization of carbon nanoshperes by severe oxidative treatment
    • 通过严格氧化处理对碳纳米粒子进行功能化
    • US07858691B2
    • 2010-12-28
    • US11869519
    • 2007-10-09
    • Cheng ZhangBing Zhou
    • Cheng ZhangBing Zhou
    • B60C1/00C08K3/04
    • B82Y40/00B82Y30/00C01B32/05C01B32/18Y10T428/2918
    • Carbon nanostructures are formed from a carbon precursor and catalytic templating nanoparticles and are treated with a severe oxidative agent to introduce oxygen-containing functional groups to the surface of the graphitic material. Methods for manufacturing carbon nanostructures generally include (1) forming a precursor mixture that includes a carbon precursor and a plurality of catalytic templating particles, (2) carbonizing the precursor mixture to form an intermediate carbon material including carbon nanostructures, amorphous carbon, and catalytic metal, (3) purifying the intermediate carbon material by removing at least a portion of the amorphous carbon and optionally at least a portion of the catalytic metal, and (4) treating the intermediate carbon material with a severe oxidative treatment to increase surface functionalization. Examples of oxidative treatments include (i) a mixture of nitric acid and sulfuric acid, (ii) a solution of hydrogen peroxide, or (iii) a mixture of sulfuric acid and hydrogen peroxide.
    • 碳纳米结构由碳前体和催化模板纳米颗粒形成,并用严重的氧化剂处理以将含氧官能团引入石墨材料的表面。 制造碳纳米结构的方法通常包括(1)形成包含碳前体和多个催化模板颗粒的前体混合物,(2)将前体混合物碳化以形成包括碳纳米结构,无定形碳和催化金属的中间碳材料 (3)通过除去至少一部分无定形碳和任选的至少一部分催化金属来纯化中间碳材料,和(4)用严格的氧化处理来处理中间碳材料以增加表面官能度。 氧化处理的实例包括(i)硝酸和硫酸的混合物,(ii)过氧化氢溶液,或(iii)硫酸和过氧化氢的混合物。
    • 60. 发明授权
    • Stable concentrated metal colloids and methods of making same
    • 稳定的浓缩金属胶体及其制备方法
    • US07718710B2
    • 2010-05-18
    • US11378057
    • 2006-03-17
    • Cheng ZhangSukesh ParasherMichael A. RueterBing Zhou
    • Cheng ZhangSukesh ParasherMichael A. RueterBing Zhou
    • C09K3/00B01J31/00B01J23/00
    • B01J23/40B01J13/0034B01J13/0039B01J13/0043B01J35/0013B22F1/0022B22F9/26B22F2999/00B82Y30/00B22F2201/013
    • A method for manufacturing stable concentrated colloids containing metal nanoparticles in which the colloid is stabilized by adding a base. This allows the metal particles to be formed in higher concentration without forming larger agglomerates and/or precipitating. The method of manufacturing the stable colloidal metal nanoparticles of the present invention generally includes (i) providing a solution comprising a plurality of metal atoms, (ii) providing a solution comprising a plurality of organic agent molecules, each organic agent molecule comprising at least one functional group capable of bonding to the metal atoms, (iii) reacting the metal atoms in solution with the organic agent molecules in solution to form a mixture comprising a plurality of complexed metal atoms, (iv) reducing the complexed metal atoms in the mixture using a reducing agent to form a plurality of nanoparticles, and (v) adding an amount of a base to the mixture, thereby improving the stability of the nanoparticles in the mixture. The base may be added before or after forming the nanoparticles.
    • 一种制备含有金属纳米粒子的稳定浓缩胶体的方法,其中胶体通过加入碱稳定。 这允许金属颗粒以更高的浓度形成而不形成较大的附聚物和/或沉淀。 制备本发明的稳定胶体金属纳米粒子的方法通常包括(i)提供包含多个金属原子的溶液,(ii)提供包含多个有机试剂分子的溶液,每个有机试剂分子包含至少一个 能够与金属原子键合的官能团,(iii)使溶液中的金属原子与溶液中的有机试剂分子反应,形成包含多个络合的金属原子的混合物,(iv)使用 还原剂形成多个纳米颗粒,和(v)向混合物中加入一定量的碱,从而提高混合物中纳米颗粒的稳定性。 可以在形成纳米颗粒之前或之后加入碱。