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    • 4. 发明授权
    • Controlled current induction motor drive
    • 控制电流感应电机驱动
    • US4019105A
    • 1977-04-19
    • US617187
    • 1975-09-26
    • Edward P. CornellThomas A. Lipo
    • Edward P. CornellThomas A. Lipo
    • H02P23/06H02P23/08
    • H02P23/08H02P23/07
    • Improved stable four-quadrant operation of an induction motor supplied with variable amplitude and frequency stator line current by a motor controller with a constant current source converter is achieved by using several feedback control loops to control the slip frequency as well as the stator line current amplitude and frequency. Speed feedback is employed with optional control of rotor speed. Motor performance is optimized by indirectly regulating air gap flux to its rated value by controlling slip frequency as a function of sensed stator current. Thus, torque is approximately linear with stator current.
    • 通过使用恒流源转换器的电动机控制器改进了提供可变振幅和频率定子线电流的感应电动机的稳定四象限运行,通过使用多个反馈控制回路来控制转差频率以及定子线电流幅度 和频率。 采用速度反馈可选择控制转子速度。 通过将滑差频率控制为感测到的定子电流的函数,通过间接调节气隙通量达到额定值来优化电机性能。 因此,转矩与定子电流近似线性关系。
    • 5. 发明授权
    • Thermal ink ribbon cassette for mailing machines
    • 邮寄机用热色带
    • US5917532A
    • 1999-06-29
    • US758405
    • 1996-11-29
    • Edward P. CornellGerald C. FreemanJacky Y. IgvalThomas M. Lyga
    • Edward P. CornellGerald C. FreemanJacky Y. IgvalThomas M. Lyga
    • B41J17/32B41J32/00B41J33/26B41J35/36
    • B41J32/00B41J17/32B41J33/26
    • A thermal ink ribbon cassette for holding an inked ribbon of indefinite length for is in a thermal transfer printing mechanism is disclosed in which the cassette holds a spool of fresh ink ribbon which passes out of the cassette and across a thermal printing head, and then back into the cassette into a used ribbon chamber. A ribbon drive mechanism is mounted in the cassette adjacent the location on the cassette where the used ribbon normally enters the cassette so that if the ribbon breaks, the free broken end can be manually fed into the drive mechanism so that the remaining portion of the unused ribbon can be used. The cassette may also be provided with a removable front wall so that replacement ribbons can be inserted by a user, and a disposable container can be put into the ribbon take up chamber of the cassette so that a user does not have to handle the rumpled ink ribbon when changing to a new ribbon.
    • 公开了一种用于保持不定长度的着色色带的热色带盒是在热转印打印机构中的,其中盒子保持一个新的色带的卷轴,该色带从纸盒中穿出并穿过热打印头,然后再回 进入盒子进入一个二手的色带室。 色带驱动机构安装在磁带盒附近,磁带盒上的位置,使用过的色带通常进入磁带,以便如果色带断裂,则可以将自由断开的端部手动馈送到驱动机构中,使剩余部分未使用 丝带可以使用。 盒还可以设置有可拆卸的前壁,以便用户可以插入更换的带子,并且一次性容器可以放入盒的色带卷取室中,使得使用者不必处理皱巴巴的墨水 改变新的功能区时的功能区。
    • 6. 发明授权
    • Apparatus for recording a transaction including authenticating an
identification card
    • 用于记录交易的装置,包括认证身份证
    • US5337358A
    • 1994-08-09
    • US979113
    • 1992-11-20
    • Barry H. AxelrodJohn T. Balga, Jr.Edward P. Cornell
    • Barry H. AxelrodJohn T. Balga, Jr.Edward P. Cornell
    • G07C9/00G07F7/12H04L9/32G06F15/21H04L9/30
    • G07F7/08G06Q20/3821G06Q20/401G07C9/00079G07F7/125H04L9/3226H04L2209/56
    • Apparatus for recording a transaction where the transaction includes authenticating an identification card; the card having information pertaining to an object or other entity to be identified on a first portion in human recognizable form, and a coded representation of an encrypted signal comprising a representation of the information on a second portion. The apparatus includes a controller, a scanner for reading the coded representation, a decoder for decoding that representation, a decrypter for decrypting the decoded signal and a display for displaying the representation of the information. In one embodiment the information includes an image of the object or other entity to be recognized and the card may be authenticated by comparing the displayed representation with the image printed on the card the card also includes a text message pertaining to the object or other entity and the apparatus includes a replaceable memory, printer, or communications link for recording at least a portion of this text message. In accordance with another aspect of the disclosure the signal is encrypted using a public key encryption system and an encrypted decryption key is appended to the encrypted message, and is recovered by the apparatus to decrypt the message.
    • 用于记录交易包括认证身份证件的交易的装置; 所述卡具有关于要在人可识别形式的第一部分上识别的对象或其他实体的信息,以及包括在第二部分上的信息的表示的加密信号的编码表示。 该装置包括控制器,用于读取编码表示的扫描器,用于解码该表示的解码器,用于解密解码信号的解密器和用于显示信息的表示的显示器。 在一个实施例中,信息包括要识别的对象或其他实体的图像,并且可以通过将显示的表示与打印在卡上的图像进行比较来认证卡,卡还包括与对象或其他实体有关的文本消息,以及 该装置包括用于记录该文本消息的至少一部分的可更换存储器,打印机或通信链路。 根据本公开的另一方面,使用公开密钥加密系统对信号进行加密,并将加密的解密密钥附加到加密的消息,并由该装置恢复以解密该消息。