-
1.发明公开Circuit and method for writing to a memory disk 有权Schaltung und Verfahren zum Schreiben auf einer Speichelplatte
公开(公告)号：EP1083549A2
公开(公告)日：2001-03-14
申请号：EP00307508.2
申请日：2000-08-31
Applicant: STMicroelectronics, Inc.
Inventor： Patti, Giuseppe , Alini, Roberto , DeNoyer, Gilles P.
Abstract: A circuit for controlling the write head (101) of a magnetic disk storage device includes a pull-up device (104) coupled to a terminal (101a) of the write head, for selectively providing a current to the write head through the terminal, parallel-connected first (106) and second (107) current sink circuits, each coupled to the write head terminal and selectively activated to draw current from the write head. A control circuit (130) individually activates the pull-up device and the first and second current sink circuits to reverse the direction of current flow through the write head. When the current nears the desired current level, the second current sink circuit is deactivated and the pull-up device is immediately activated for a predetermined period of time. Current overshoot and undershoot of the write head current is minimized.
Abstract translation: 用于控制磁盘存储装置的写入头（101）的电路包括耦合到写入头的终端（101a）的上拉装置（104），用于通过终端有选择地向写入头提供电流， 并联连接的第一（106）和第二（107）电流吸收电路，每个耦合到写入头终端并选择性地激活以从写入头抽取电流。 控制电路（130）分别启动上拉装置和第一和第二电流吸收电路以反转通过写入头的电流的方向。 当电流接近期望的电流电平时，第二电流吸收电路被去激活，并且上拉装置立即被激活一段预定的时间。 写头电流的电流过冲和欠冲最小。
-
公开(公告)号：EP1083549B1
公开(公告)日：2010-02-17
申请号：EP00307508.2
申请日：2000-08-31
Applicant: STMicroelectronics, Inc.
Inventor： Patti, Giuseppe , Alini, Roberto , DeNoyer, Gilles P.
-
公开(公告)号：EP1083549A3
公开(公告)日：2005-05-18
申请号：EP00307508.2
申请日：2000-08-31
Applicant: STMicroelectronics, Inc.
Inventor： Patti, Giuseppe , Alini, Roberto , DeNoyer, Gilles P.
Abstract: A circuit for controlling the write head (101) of a magnetic disk storage device includes a pull-up device (104) coupled to a terminal (101a) of the write head, for selectively providing a current to the write head through the terminal, parallel-connected first (106) and second (107) current sink circuits, each coupled to the write head terminal and selectively activated to draw current from the write head. A control circuit (130) individually activates the pull-up device and the first and second current sink circuits to reverse the direction of current flow through the write head. When the current nears the desired current level, the second current sink circuit is deactivated and the pull-up device is immediately activated for a predetermined period of time. Current overshoot and undershoot of the write head current is minimized.
-
-
Search Results
3
records
(took 0.018 seconds)
