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    • 3. 发明申请
    • AUTHENTICATION OF DOCUMENTS HAVING A MAGNETIC STRIPE
    • 具有磁条的文件的认证
    • WO2010059929A2
    • 2010-05-27
    • PCT/US2009/065303
    • 2009-11-20
    • VISA INTERNATIONAL SERVICE ASSOCIATIONFANG, XiangFAITH, PatrickKATO, CraigHAMMAD, AymanKOGANTI, Krishan, Prasad
    • FANG, XiangFAITH, PatrickKATO, CraigHAMMAD, AymanKOGANTI, Krishan, Prasad
    • G06K19/12
    • G06K19/12G07D7/04
    • Methods, systems, and apparatus for efficiently authenticating a document (e.g. a credit card) having a magnetic stripe are provided. The magnetic field at different points of the magnetic stripe are measured, e.g., by a checkout scanner to create a magnetic signature. Digital samples of the measurements may be transformed into coefficients of continuous basis functions, e.g., a Fourier transform. These coefficients are then compared to reference values (e.g. corresponding coefficients) to produce a measure of the authenticity of the document. The number of coefficients used can advantageously be smaller than the number of digital samples without compromising accuracy, thus using less bandwidth between a scanner and an authentication entity. The reference values can be updated over time to reflect changes in the magnetic stripe of the authentic document, as may occur due to physical deterioration. For example, reference values may be optimized based on recent measurements of the authenticated document to provide a more accurate determination of authenticity for future measurements. Methods, systems, and apparatus for verifying the identity of a cardholder are also provided. A digital representation of a magnetic characteristic of a magnetic stripe of the card can be stored on a portable electronic device of the cardholder. During a transaction, the digital signature is then transmitted so that it can be compared with a reference signature. The identity may be verified, and a response sent to a party requesting the verification, e.g., during a transaction between the requesting party and the verified party.
    • 提供了用于有效认证具有磁条的文件(例如信用卡)的方法,系统和设备。 例如通过结账扫描仪测量磁条不同点处的磁场以产生磁性签名。 测量的数字样本可以被变换成连续基函数的系数,例如傅立叶变换。 然后将这些系数与参考值(例如对应的系数)进行比较以产生文档真实性的度量。 所使用的系数的数量可以有利地小于数字样本的数量而不损害精度,因此在扫描仪和认证实体之间使用较少的带宽。 可以随时间更新参考值以反映真实文档的磁条变化,这可能由于物理恶化而发生。 例如,参考值可基于认证文件的最近测量而被优化,以为将来的测量提供更准确的真实性确定。 还提供了用于验证持卡人身份的方法,系统和装置。 卡的磁条的磁性特征的数字表示可以被存储在持卡人的便携式电子设备上。 在交易过程中,数字签名随后被传输,以便可以将其与参考签名进行比较。 身份可以被验证,并且发送给请求验证的一方的响应,例如在请求方和被验证方之间的交易期间。
    • 6. 发明申请
    • AUTHENTICATION OF DOCUMENTS HAVING A MAGNETIC STRIPE
    • 具有磁条的文件的认证
    • WO2010059929A3
    • 2010-08-26
    • PCT/US2009065303
    • 2009-11-20
    • VISA INT SERVICE ASSFANG XIANGFAITH PATRICKKATO CRAIGHAMMAD AYMANKOGANTI KRISHAN PRASAD
    • FANG XIANGFAITH PATRICKKATO CRAIGHAMMAD AYMANKOGANTI KRISHAN PRASAD
    • G06K19/12
    • G06K19/12G07D7/04
    • Methods, systems, and apparatus for efficiently authenticating a document (e.g. a credit card) having a magnetic stripe are provided. The magnetic field at different points of the magnetic stripe are measured, e.g., by a checkout scanner to create a magnetic signature. Digital samples of the measurements may be transformed into coefficients of continuous basis functions, e.g., a Fourier transform. These coefficients are then compared to reference values (e.g. corresponding coefficients) to produce a measure of the authenticity of the document. The number of coefficients used can advantageously be smaller than the number of digital samples without compromising accuracy, thus using less bandwidth between a scanner and an authentication entity. The reference values can be updated over time to reflect changes in the magnetic stripe of the authentic document, as may occur due to physical deterioration. For example, reference values may be optimized based on recent measurements of the authenticated document to provide a more accurate determination of authenticity for future measurements. Methods, systems, and apparatus for verifying the identity of a cardholder are also provided. A digital representation of a magnetic characteristic of a magnetic stripe of the card can be stored on a portable electronic device of the cardholder. During a transaction, the digital signature is then transmitted so that it can be compared with a reference signature. The identity may be verified, and a response sent to a party requesting the verification, e.g., during a transaction between the requesting party and the verified party.
    • 提供了用于有效地认证具有磁条的文档(例如,信用卡)的方法,系统和装置。 例如通过检验扫描器来测量磁条的不同点处的磁场以产生磁性签名。 测量的数字样本可以被变换为连续基函数的系数,例如傅里叶变换。 然后将这些系数与参考值(例如相应的系数)进行比较以产生文档的真实性的量度。 所使用的系数的数量可以有利地小于数字样本的数量,而不损害精度,因此在扫描仪和认证实体之间使用更少的带宽。 可以随时间更新参考值,以反映由于物理劣化可能发生的可靠文件的磁条的变化。 例如,可以基于认证文件的最近测量来优化参考值,以提供对未来测量的真实性的更准确的确定。 还提供了用于验证持卡人身份的方法,系统和装置。 卡的磁条的磁特性的数字表示可以存储在持卡人的便携式电子设备上。 在交易期间,然后传输数字签名,使得它可以与参考签名进行比较。 可以验证身份,以及发送给请求验证的一方的响应,例如在请求方和被验证方之间的交易期间。
    • 7. 发明申请
    • HEAT DISSIPATION DEVICE AND CENTRIFUGAL FAN THEREOF
    • 散热装置及其散热风扇
    • US20110247789A1
    • 2011-10-13
    • US12770783
    • 2010-04-30
    • FANG-XIANG YUXIAN-MIN JINJER-HAUR KUO
    • FANG-XIANG YUXIAN-MIN JINJER-HAUR KUO
    • F28F5/00F04D29/44
    • F04D29/441F04D25/0613
    • A centrifugal fan includes a casing and an impeller received in the casing. The casing defines an air outlet at one side thereof. An air channel is defined in the casing between a sidewall of the casing and outermost free ends of blades of the impeller. The air channel has an upstream end and a downstream end along a rotation direction of the impeller. A plurality of air guide plates is formed in the casing and disposed at a junction between the downstream end of the air channel and an area of the air outlet directly communicating with the downstream end of the air channel. The air guide plates are structured and arranged in a streamlined manner and pattern with respect to air flowing from the downstream end of the air channel towards the air outlet.
    • 离心风扇包括容纳在壳体中的壳体和叶轮。 壳体在其一侧限定出气口。 空气通道限定在外壳中的壳体的侧壁和叶轮的叶片的最外侧的自由端之间。 空气通道沿着叶轮的旋转方向具有上游端和下游端。 多个空气引导板形成在壳体中,并且设置在空气通道的下游端和与空气通道的下游端直接连通的空气出口的区域之间的接合处。 空气引导板被构造和布置成相对于从空气通道的下游端朝向空气出口流动的空气的流线型和图案。
    • 8. 发明授权
    • LED
    • US07789537B2
    • 2010-09-07
    • US12248010
    • 2008-10-08
    • Fang-Xiang YuShun-Yuan Jan
    • Fang-Xiang YuShun-Yuan Jan
    • F21V5/00
    • H01L33/54
    • An LED (10) includes a chip with a light-emitting surface (140) and an encapsulation on the chip. The encapsulation has a light output surface (110) facing the light-emitting surface of the chip and has a convex surface (112) surrounding a concave surface (114). A portion of light (30) emitted by the light-emitting surface is refracted divergently via the concave surface to a predetermined area above and around the concave surface, and another portion of light (40) emitted by the light-emitting surface is refracted convergently via the convex surface to the predetermined area.
    • LED(10)包括具有发光表面(140)的芯片和芯片上的封装。 封装具有面向芯片的发光表面的光输出表面(110),并且具有包围凹表面(114)的凸表面(112)。 由发光面发射的光的一部分(30)经由凹面发散折射到凹面的上方和周围的预定区域,并且由发光面发射的另一部分光(40)会收敛地折射 经由凸表面到预定区域。