公开(公告)号：US5394277A

公开(公告)日：1995-02-28

申请号：US955411

申请日：1992-10-02

申请人： Per O. Pahr ,  Steinar J. Strand ,  Erik Solhjell

发明人： Per O. Pahr ,  Steinar J. Strand ,  Erik Solhjell

IPC分类号： G11B5/55 ,  G11B5/584 ,  G11B20/18 ,  G11B5/09 ,  G11B21/04

CPC分类号： G11B5/584 ,  G11B20/1833 ,  G11B5/5508

摘要： Servo track pair position and longitudinal tape position are determined for a tape using dedicated servo format. The tape includes at least one set of data tracks and dedicated servo tracks wherein adjacent servo tracks are defined by longitudinal lines through the edges of erased or non-recorded tape portions. The information about servo track pair numbers and/or servo sample numbers is recorded into portions of the tape and is decoded and read back together with signals from the servo track. The information is recorded in a digital manner by using a digital block format of data blocks requiring fewer bytes per block than a data block provided on the data tracks. If information about longitudinal tape position is not required, information may be recorded in an analog manner using a fixed set of predetermined frequencies.

摘要翻译： 使用专用伺服格式为磁带确定伺服磁道对位置和纵向磁带位置。 磁带包括至少一组数据磁道和专用伺服磁道，其中相邻的伺服磁道由穿过已擦除或未记录磁带部分的边缘的纵向线限定。 关于伺服磁道对编号和/或伺服采样号的信息被记录在磁带的一部分中，并与来自伺服磁道的信号一起解码和读回。 以数字方式通过使用数据块格式记录信息，该数据块格式的数据块比每个块要少得多的数据块，而不是数据磁道上提供的数据块。 如果不需要关于纵向带位置的信息，则可以使用固定的一组预定频率以模拟方式记录信息。

公开(公告)号：US5287008A

公开(公告)日：1994-02-15

申请号：US698099

申请日：1991-05-10

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： G06F3/00 ,  H02H9/00 ,  H05F3/02 ,  H05K9/00 ,  H04B15/00

CPC分类号： H02H9/005

摘要： An electrostatic discharge noise suppression method and system is disclosed for electronic devices, particularly those connected to data buses. Electrostatic discharge protection is provided by breaking high-frequency ground loops by inserting common mode inductors where they can be most effective-in the DC power supplies themselves, in the DC power connections, or just behind the DC connector in the electronic devices. Saturation of the cores of the common mode inductors is prevented in a preferred way by equalizing supply and return currents in the common mode inductors and by preventing DC ground currents from flowing in a chassis between the power supply and the electronic device.

摘要翻译： 公开了一种用于电子设备的静电放电噪声抑制方法和系统，特别是那些连接到数据总线的装置。 通过在直流电源本身，直流电源连接或电子设备中的直流连接器后面插入共模电感器来最大限度地断开高频接地回路，从而提供静电放电保护。 通过均衡共模电感器中的供电和返回电流以及通过防止DC接地电流在电源和电子设备之间的底盘中流动，以优选的方式来防止共模电感器的磁芯的饱和。

公开(公告)号：US20090256940A1

公开(公告)日：2009-10-15

申请号：US12081189

申请日：2008-04-11

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： H04N5/335 ,  H01L21/8234

CPC分类号： H04N5/3698

摘要： A method and apparatus that generates boosted control signals for a transistor in a target pixel circuit. At least one modified pixel circuit is provided with a transistor layout that approximates a layout of the target pixel circuit. In the modified pixel circuit, one transistor that corresponds to a transistor in the target pixel that is to be controlled provides a voltage used to generate a control signal for the corresponding transistor in the target pixel.

摘要翻译： 一种在目标像素电路中产生晶体管的升压控制信号的方法和装置。 至少一个修改像素电路具有近似目标像素电路的布局的晶体管布局。 在修改像素电路中，对应于要被控制的目标像素中的晶体管的一个晶体管提供用于产生目标像素中相应晶体管的控制信号的电压。

公开(公告)号：US5294791A

公开(公告)日：1994-03-15

申请号：US834856

申请日：1992-02-13

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： G11B5/55 ,  G11B5/584 ,  G11B15/087 ,  G11B27/36 ,  G01N21/86 ,  G11B5/596

CPC分类号： G11B5/5508 ,  G11B5/584 ,  G11B15/087 ,  G11B27/36

摘要： A method and apparatus performs the detection of an edge of a tape and further controls the read/write head to position itself relative to the detected edge. An array of photodetectors in an integrated circuit chip senses the intensity of light illuminating the chip with the tape running between the light source and the photodetectors. A light-to-dark transition is formed which is indicative of the edge of the tape.

摘要翻译： 一种方法和装置执行磁带边缘的检测，并进一步控制读/写头相对于检测到的边缘进行定位。 集成电路芯片中的一组光电检测器感测到在光源和光电检测器之间运行的带照射芯片的光的强度。 形成指示胶带边缘的浅到暗的转变。

公开(公告)号：US5229620A

公开(公告)日：1993-07-20

申请号：US814840

申请日：1991-12-31

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： G11B5/55 ,  G11B7/003 ,  G11B15/08 ,  G11B23/38 ,  G11B27/26

CPC分类号： G11B15/08 ,  G11B23/38 ,  G11B27/26 ,  G11B5/5508 ,  G11B7/003

摘要： A method and apparatus performs detection of an edge and detection of holes or other data patterns on a tape or other magnetic or optical medium. An array of photodetectors in an integrated circuit chip senses the intensity of light illuminating the chip with the tape running between a light source and the photodetectors. The holes or the other data patterns are sensed on the tape based on a comparison between detected light intensities with a programmable reference level. In addition, areas which may normally be sensed as a hole are discarded if these areas fall within a specified tolerance.

公开(公告)号：US5155353A

公开(公告)日：1992-10-13

申请号：US744877

申请日：1991-08-14

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： G11B15/08 ,  H03F3/08

CPC分类号： G11B15/08 ,  H03F3/082

摘要： A monolithic integrated circuit using MOSFETs operatively configured in weak channel inversion made wherein pulses of light by interest are identified by identifying levels of light signal that exceed a threshold difference between a detected light level signal and a noise light level signal.

摘要翻译： 使用可操作地配置在弱通道反转中的MOSFET的单片集成电路，其中感兴趣的光脉冲通过识别超过检测到的光电平信号和噪声光电平信号之间的阈值差的光信号的电平来识别。

公开(公告)号：US08026968B2

公开(公告)日：2011-09-27

申请号：US12081189

申请日：2008-04-11

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： H04N5/335

CPC分类号： H04N5/3698

摘要： A method and apparatus that generates boosted control signals for a transistor in a target pixel circuit. At least one modified pixel circuit is provided with a transistor layout that approximates a layout of the target pixel circuit. In the modified pixel circuit, one transistor that corresponds to a transistor in the target pixel that is to be controlled provides a voltage used to generate a control signal for the corresponding transistor in the target pixel.

摘要翻译： 一种在目标像素电路中产生晶体管的升压控制信号的方法和装置。 至少一个修改像素电路具有近似目标像素电路的布局的晶体管布局。 在修改像素电路中，对应于要被控制的目标像素中的晶体管的一个晶体管提供用于产生目标像素中相应晶体管的控制信号的电压。

公开(公告)号：US5394278A

公开(公告)日：1995-02-28

申请号：US23590

申请日：1993-02-26

申请人： Per O. Pahr ,  Ladislav Rubas

发明人： Per O. Pahr ,  Ladislav Rubas

IPC分类号： G11B5/008 ,  G11B5/024 ,  G11B5/09 ,  G11B5/03

CPC分类号： G11B5/00817 ,  G11B5/024

摘要： Information may be erased from a magnetic tape with the tape being divided into at least two physical partitions. Each physical partition includes a plurality of data tracks carrying recorded data or the like and at least one set of servo tracks carrying position information dedicated to an area between the data tracks. At least one of the physical partitions may be erased during movement of the tape in a forward direction defined by moving the tape towards an end of tape designation, and at least a second of the physical partitions may be erased during the movement of the tape either in a backward direction defined by moving the tape towards the beginning of the tape or in the forward direction from the beginning of tape to the end of the tape.

摘要翻译： 可以将磁带从磁带上擦除信息，磁带被划分成至少两个物理分区。 每个物理分区包括承载记录数据等的多个数据轨道和携带专用于数据轨道之间的区域的位置信息的至少一组伺服轨道。 在通过将带移动到磁带指定的端部所限定的向前方向的磁带移动期间，可以擦除至少一个物理分区，并且至少第二个物理分区可以在磁带的移动期间被擦除 沿着将带朝向带的开始或从带的开始到带的末端向前的方向限定的向后方向。

公开(公告)号：US5379165A

公开(公告)日：1995-01-03

申请号：US34573

申请日：1993-03-19

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： E04B1/58 ,  G11B5/008 ,  G11B5/584 ,  G11B5/55

CPC分类号： G11B5/584 ,  G11B5/00878

摘要： A method and apparatus for positioning a magnetic servo head relative to a servo track on a traveling magnetic tape both make use of the observation that a given tape in a given tape drive unit exhibits transverse tape movements during operation which constitute a "signature" waveform for the coupled tape cartridge and drive unit. In the method and apparatus, the transverse movements of a traveling tape in a drive unit are monitored to obtain the aforementioned waveform which is characteristic of the transverse movements for that tape, and the waveform is stored. The positioning of the servo head is controlled relative to a servo track on the tape using a control signal generated according to any known track seek algorithm. The stored waveform is recalled and is superimposed on the control signal, thereby significantly increasing the accuracy of the positioning of the servo head, which in turn increases the accuracy of positioning of the write/read head.

摘要翻译： 一种用于在行进磁带上相对于伺服磁道定位磁性伺服磁头的方法和装置，都利用了在给定的磁带驱动单元中给定磁带在操作期间显示横向磁带移动的观察结果，该结构构成了用于 连接的带盒和驱动单元。 在该方法和装置中，监视行驶带在驱动单元中的横向运动，以获得作为该带的横向运动特性的上述波形，并且存储波形。 使用根据任何已知的追踪算法生成的控制信号，相对于磁带上的伺服磁道来控制伺服磁头的定位。 存储的波形被调用并且叠加在控制信号上，从而显着提高伺服头的定位精度，这又提高了写/读头的定位精度。

公开(公告)号：US5293278A

公开(公告)日：1994-03-08

申请号：US850821

申请日：1992-03-13

申请人： Per O. Pahr

发明人： Per O. Pahr

IPC分类号： G11B5/02 ,  G11B5/29 ,  G11B5/49 ,  G11B15/12 ,  G11B19/02

CPC分类号： G11B5/02 ,  G11B15/12 ,  G11B19/02 ,  G11B5/4992

摘要： A circuit for selective switching through of read signals of a multiple magnetic head in a magnetic layer memory, wherein each magnetic system of a multiple magnetic head is associated with a preamplifier which has spatially separated input and final stages, the input stage being located directly on the multiple magnetic head and connected to the final stage by means of a flexible connecting line, the final stage being spatially associated with a read channel, the final stage having switching means for the selective closing of a current path between the final stage and the associated input stage by means of a selection signal, the input stage being so constructed to be in an idle state for as long as the associated final stage is not activated. Preferably, outputs of all the final stages are connected in parallel and coupled into the read channel across an output stage constructed as a differential voltage amplifier.

摘要翻译： 一种用于通过磁性层存储器中的多个磁头的读取信号进行选择性切换的电路，其中多个磁头的每个磁性系统与具有空间分离的输入和最后级的前置放大器相关联，所述输入级直接位于 多磁头并通过柔性连接线连接到最终级，最终级与读通道在空间上相关联，最后级具有用于选择性地关闭最终级与相关联的电流路径之间的电流路径的切换装置 通过选择信号输入级，输入级被构造为处于空闲状态，只要相关联的最终级未被激活。 优选地，所有最后级的输出并联连接并跨构造为差分电压放大器的输出级耦合到读通道。