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    Analog equalization low pass filter structure
    12.
    发明公开
    Analog equalization low pass filter structure 有权
    Tiefpassfilterstruktur mit analoger Entzerrung

    公开(公告)号：EP1014573A1

    公开(公告)日：2000-06-28

    申请号：EP98830760.9

    申请日：1998-12-17

    Applicant: STMicroelectronics S.r.l.

    Inventor： Bollati, Giacomino ,  Alini, Roberto ,  Ottini, Daniele ,  Bruccoleri, Melchiorre

    IPC: H03H11/04

    CPC classification number: H03H11/0422

    Abstract: A low pass filter with programmable equalization comprising at least a biquadratic cell (BIQUAD) and a converter of the input voltage (Vin) in a current ( iz ), proportional to the derivative of the input voltage, that is injected on a node of the biquadratic cell (BIQUAD) in order to introduce two real and opposed zeroes in the transfer function of the filter, is composed of two structurally similar circuits, functionally connected in cascade, each circuit being composed of a biquadratic cell and an input stage having two outputs injecting through a first current output (A) said current ( iz ) on an input capacitor (C1) of the respective biquadratic cell, by a direct coupling in a first of said two circuits and in an inverted manner in the second of said two circuits; a second voltage output (B) being coupled to an input of the respective biquadratic cell.

    Abstract translation: 具有可编程均衡的低通滤波器，其包括至少一个二次电池（BIQUAD）和与输入电压的导数成比例的电流（iz）中的输入电压（Vin）的转换器，其被注入到 为了在滤波器的传递函数中引入两个实数和相对的零点，双级电容（BIQUAD）由两个结构相似的电路组成，功能上串联连接，每个电路由一个二次电池和一个具有两个输出的输入级组成 通过第一电流输出（A），通过在所述两个电路中的第一个中的直接耦合并且在所述两个电路中的第二个中以反向方式，在相应的二次电池的输入电容器（C1）上注入所述电流（iz） ; 第二电压输出（B）耦合到相应的双二次电池的输入端。

    One-time programmable circuit exploiting the current amplification degradation of a bipolar transistor
    19.
    发明公开
    One-time programmable circuit exploiting the current amplification degradation of a bipolar transistor 有权
    一次性使用双极晶体管的电流增益的降低可编程电路

    公开(公告)号：EP1720170A1

    公开(公告)日：2006-11-08

    申请号：EP06252214.9

    申请日：2006-04-25

    Applicant: STMicroelectronics, Inc.

    Inventor： Alini, Roberto ,  Rovati, Sergio Stefano ,  Vandenbossche, Eric ,  Paskins, Christopher

    IPC: G11C17/16

    CPC classification number: G11C17/16

    Abstract: A one-time programmable circuit uses forced BJT h FE degradation to permanently store digital information as a logic zero or logic one state. The forced degradation is accomplished by applying a voltage or current to the BJT for a specific time to the reversed biased base-emitter junction, allowing a significant degradation of the junction without destroying it.

    Abstract translation: 一次性可编程电路使用强制BJTħFE降解成数字信息永久地存储为逻辑零或逻辑一的状态。 强制降解是通过施加电压或电流到BJT为特定时间的反向偏置基极 - 发射极结，使结的显著降解而不破坏它来实现的。

    Circuit and method for writing to a memory disk with a boosted voltage
    20.
    发明公开
    Circuit and method for writing to a memory disk with a boosted voltage 审中-公开
    电路和方法，用于通过增加张力的装置写入磁盘

    公开(公告)号：EP1083550A3

    公开(公告)日：2005-05-18

    申请号：EP00307519.9

    申请日：2000-08-31

    Applicant: STMicroelectronics, Inc.

    Inventor： Patti, Giuseppe ,  Alini, Roberto ,  Pakriswamy, Elango

    IPC: G11B5/012 ,  G11B5/02

    CPC classification number: G11B5/022 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09

    Abstract: A circuit (102,103) for controlling the write head (101) of a magnetic disk storage device includes a pull-up device (104) for selectively providing a current to the write head and a current sink circuit (106) selectively activated to draw current from the write head. A bootstrap circuit (108) is coupled to the current sink circuit. When reversing the direction of current flow through the write head from a first direction to the write head to a second direction from the write head terminal, the bootstrap circuit and the current sink circuit are activated to rapidly draw current from the write head. When the current in the write head nears and/or slightly surpasses the desired destination level, the bootstrap circuit is deactivated.

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