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    • 17. 发明授权
    • Magnetic random access memory and method of operating the same
    • 磁性随机存取存储器及其操作方法
    • US06781871B2
    • 2004-08-24
    • US10316844
    • 2002-12-12
    • Wan-jun ParkTae-wan KimI-hun SongSang-jin ParkRichard J. Gambino
    • Wan-jun ParkTae-wan KimI-hun SongSang-jin ParkRichard J. Gambino
    • G11C1100
    • G11C19/0808G11C11/15G11C11/16
    • A magnetic random access memory using magnetic domain drag and giant magnetoresistance (GMR) or tunnel magnetoresistance (TMR) and a method of operating the same, wherein the magnetic random access memory includes a data storage unit including a fixed layer, a non-magnetic layer, and a free layer having two ends; a data input means electrically connected to both ends of the free layer, for applying current to the free layer to input data into the data storage unit; and a data output means electrically connected to the free layer and the fixed layer to output data stored in the data storage unit. Accordingly, a magnetic random access memory according to the present invention has superior performance than one using a switching field to record data.
    • 一种使用磁畴阻力和巨磁阻(GMR)或隧道磁阻(TMR)的磁性随机存取存储器及其操作方法,其中磁性随机存取存储器包括数据存储单元,其包括固定层,非磁性层 和具有两端的自由层; 电连接到自由层的两端的数据输入装置,用于向自由层施加电流以将数据输入数据存储单元; 以及电连接到所述自由层和所述固定层的数据输出装置,以输出存储在所述数据存储单元中的数据。 因此,根据本发明的磁性随机存取存储器具有比使用切换字段来记录数据的磁性随机存取存储器更好的性能。
    • 20. 发明授权
    • Fabrication of a high resolution, low profile credit card reader and card reader for transmission of data by sound
    • 制造高分辨率,低档信用卡读卡器和读卡器,用于通过声音传输数据
    • US06579728B2
    • 2003-06-17
    • US09902623
    • 2001-07-12
    • Alan H. GrantRichard J. Gambino
    • Alan H. GrantRichard J. Gambino
    • H01L2100
    • G11B5/3903G06K7/084G06K7/087G06K17/0022G11B5/00804G11B5/3163H01L43/12
    • A portable card reader designed to be carried in a wallet or purse has an electromagnetic head that reads information from a magnetic strip of a card or information is read from the card by an array of Hall sensors. In a further embodiment, the card reader uses a magnetic sensor based on magnetoresistive sensing of magnetic transitions of a magnetic stripe, suitable for use with small, portable electronic devices. In each embodiment, the information read from the card may be converted to a sequence of electronic bursts of predetermined frequency, preferably in the audible or ultrasound range. The sound signals are output by a speaker to the microphone of a telephone. The signal is then transmitted over the telephone lines to a remote receiver. The receiver then converts the sound bursts into signal pulses, which can be read using the computer software of a conventional card reader.
    • 设计为携带在钱包或钱包中的便携式读卡器具有从卡的磁条读取信息的电磁头,或者通过霍尔传感器阵列从卡读取信息。 在另一个实施例中,读卡器使用基于磁阻检测磁条的磁传感器,该磁传感器适用于小型便携式电子设备。 在每个实施例中,从卡读取的信息可以被转换成预定频率的电子脉冲序列,优选在可听或超声范围内。 声音信号由扬声器输出到电话的麦克风。 然后,信号通过电话线传输到远程接收器。 然后,接收器将声音脉冲串转换为信号脉冲,其可以使用常规读卡器的计算机软件读取。