公开(公告)号：US4878140A

公开(公告)日：1989-10-31

申请号：US209651

申请日：1988-06-21

申请人： Hardayal S. Gill ,  Victor W. Hesterman ,  Giora J. Tarnopolsky ,  Lung T. Tran

发明人： Hardayal S. Gill ,  Victor W. Hesterman ,  Giora J. Tarnopolsky ,  Lung T. Tran

IPC分类号： G11B5/00 ,  G11B5/02 ,  G11B5/127 ,  G11B5/39 ,  G11B19/04

CPC分类号： G11B5/3954 ,  G11B19/04 ,  G11B5/02 ,  G11B5/1278 ,  G11B5/39 ,  G11B5/3903 ,  G11B2005/0029

摘要： A sensor for reading perpendicularly recorded media includes dual magneto-resistive elements. Directionally opposed currents through respective elements each serve both sensing and bias functions. A detector differentially detects changes in the resistance of the stripes so as to presume common mode noise rejection when reading perpendicular recording media. In addition, the opposing currents offset each other's interaction with the soft magnetic underlayer of the media, which interaction could otherwise perturb the information stored on the media. Provision is made for switching the relative direction of current flow to provide for reading longitudinally recorded media.

公开(公告)号：US5309304A

公开(公告)日：1994-05-03

申请号：US894394

申请日：1992-06-05

申请人： Steven L. Naberhuis ,  Ralph Simmons ,  Robert J. Davidson ,  Victor W. Hesterman ,  Lung T. Tran ,  Giora J. Tarnopolsky

发明人： Steven L. Naberhuis ,  Ralph Simmons ,  Robert J. Davidson ,  Victor W. Hesterman ,  Lung T. Tran ,  Giora J. Tarnopolsky

IPC分类号： G01D5/245 ,  G01R33/09 ,  G11B5/39 ,  H01F10/08 ,  H01L43/08 ,  G11B5/127

CPC分类号： G11B5/3954 ,  G11B5/399

摘要： In a magnetoresistive transducer, a conductor configuration in which magnetic fields in the conductors are oriented in the same direction to provide symmetric track profiles and improved track edge response. Conductor area at the transducer air bearing surface is also minimized to eliminate shorting and improve device yield and reliability. In one embodiment of the invention, inductive pickup is minimized by limiting the active width of magnetoresistive sensing elements through conductor placement. Another embodiment of the invention, useful for applications involving dual stripe magnetoresistive transducers, minimizes inductive pickup by providing relatively large conductors for each magnetoresistive stripe, arranged in parallel with each other and coupled differentially to cancel inductive pickup through common mode rejection.

摘要翻译： 在磁阻换能器中，导体配置中导体中的磁场被定向在相同的方向上以提供对称的轨道轮廓和改进的轨道边缘响应。 传感器空气轴承表面的导体面积也被最小化，以消除短路并提高器件的产量和可靠性。 在本发明的一个实施例中，通过通过导线放置来限制磁阻感测元件的有源宽度来使电感拾取器最小化。 可用于涉及双条磁阻传感器的应用的本发明的另一个实施例通过为每个磁阻条提供相对较大的导体使彼此并联布置并且通过共模抑制来抵消电感拾取器而被耦合地极化电感拾取。