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1. 发明申请

WO9944201A8 DEVICE FOR WRITE COMPENSATION IN MAGNETIC-MEDIA RECORDING 审中-公开
标题翻译：磁介质记录中的写补偿装置
公开(公告)号：WO9944201A8
公开(公告)日：1999-12-29
申请号：PCT/IB9900210
申请日：1999-02-08
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB , HEWLETT PACKARD CO
发明人： BERGMANS JOHANNES W M , VOORMAN JOHANNES O , BRITTENHAM STEVEN L
IPC分类号： G11B5/09 , G11B20/10
CPC分类号： G11B20/10009 , G11B5/09
摘要： Device for write precompensation of data signals to be recorded on a magnetic medium, which device has an input for receiving input data signals and an output for supplying the output signals to be recorded, at least a plurality of the signal transitions in these output data signals being delayed with respect to the corresponding signal transitions in the input data signal, the signal path between the input and the output including a series arrangement of a filter circuit and a hysteresis circuit, which hysteresis circuit receives the output signal of the filter circuit and supplies a binary signal as its output signal. This write precompensation device simply enables allowance to be made for the influence of a large number of preceding symbol values on a transition to be recorded. When the device is combined with a known write compensation device it suffices to use a simple filter.
摘要翻译：要记录在磁介质上的数据信号的预补偿装置，该装置具有用于接收输入数据信号的输入端和用于提供要记录的输出信号的输出，在这些输出数据信号中的至少多个信号转换相对于输入数据信号中的相应信号转换被延迟，输入和输出之间的信号路径包括滤波器电路和滞后电路的串联布置，该滞后电路接收滤波器电路的输出信号并提供二进制信号作为其输出信号。该写入预补偿装置简单地允许对要记录的转换的大量先前符号值的影响进行限制。当设备与已知的写入补偿设备组合时，就可以使用简单的过滤器。

2. 发明申请

WO9944201A3 DEVICE FOR WRITE COMPENSATION IN MAGNETIC-MEDIA RECORDING 审中-公开
标题翻译：磁记录写入补偿装置
公开(公告)号：WO9944201A3
公开(公告)日：1999-10-28
申请号：PCT/IB9900210
申请日：1999-02-08
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB , HEWLETT PACKARD CO
发明人： BERGMANS JOHANNES W M , VOORMAN JOHANNES O , BRITTENHAM STEVEN L
IPC分类号： G11B5/09 , G11B20/10
CPC分类号： G11B20/10009 , G11B5/09
摘要： Device for write precompensation of data signals to be recorded on a magnetic medium, which device has an input for receiving input data signals and an output for supplying the output signals to be recorded, at least a plurality of the signal transitions in these output data signals being delayed with respect to the corresponding signal transitions in the input data signal, the signal path between the input and the output including a series arrangement of a filter circuit and a hysteresis circuit, which hysteresis circuit receives the output signal of the filter circuit and supplies a binary signal as its output signal. This write precompensation device simply enables allowance to be made for the influence of a large number of preceding symbol values on a transition to be recorded. When the device is combined with a known write compensation device it suffices to use a simple filter.
摘要翻译：用于在磁介质上记录数据信号的写预补偿装置，该装置具有用于接收输入数据信号的输入端和用于提供要记录的输出信号的输出端，在这些输出数据信号中的至少多个信号转换相对于输入数据信号中的相应信号转变而言被延迟，输入和输出之间的信号路径包括滤波器电路和滞后电路的串联布置，该滞后电路接收滤波器电路的输出信号并提供一个二进制信号作为其输出信号。该写入预补偿装置简单地允许对要记录的转换中的大量先前符号值的影响进行补偿。当该设备与已知的写入补偿设备结合使用时，只需使用简单的滤波器即可。

3. 发明申请

WO9960562A2 RECORDING APPARATUS PROVIDED WITH A WRITE DRIVER CIRCUIT 审中-公开
标题翻译：使用写驱动电路提供的记录装置
公开(公告)号：WO9960562A2
公开(公告)日：1999-11-25
申请号：PCT/IB9900811
申请日：1999-05-06
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB
发明人： RAMALHO JOAO N V L , VOORMAN JOHANNES O , DE JONG GERBEN W , LE LUAN , PIERAERTS ERIC
IPC分类号： G11B3/00 , G11B5/012 , G11B5/02 , G11B5/09 , H03K17/66 , G11B
CPC分类号： H03K17/662 , G11B5/012 , G11B5/02 , G11B5/09
摘要： A recording apparatus for recording an information signal on a magnetic record carrier is disclosed, comprising a write driver circuit and a magnetic write head (L>h h
摘要翻译：公开了一种用于在磁记录载体上记录信息信号的记录装置，包括写驱动电路和磁写头（L> h <）。写驱动器电路包括第一电压驱动器（4）和第二电压驱动器（6）。此外，第一电流驱动器（40）和第二电流驱动器（42）可用于驱动写入头（L> h <）。

4. 发明申请

WO9940574A3 ARRANGEMENT FOR READING INFORMATION FROM A MAGNETIC RECORD CARRIER 审中-公开
标题翻译：从磁记录载体读取信息的安排
公开(公告)号：WO9940574A3
公开(公告)日：1999-11-04
申请号：PCT/IB9900110
申请日：1999-01-25
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB
发明人： RAMALHO JOAO N V L , VOORMAN JOHANNES O , LECLERC PATRICK , RAMAEKERS JOZEF A M , LUGTHART MARCEL L , BERGMANS JOHANNES W M
IPC分类号： G01R33/09 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/09 , G11B7/00 , G11B20/10 , G11B20/22 , G11B33/14
CPC分类号： G11B20/10009 , G01R33/09 , G11B5/012 , G11B5/02 , G11B5/09 , G11B7/00 , G11B20/22 , G11B33/14 , G11B2005/0016 , G11B2005/0018
摘要： An arrangement is disclosed for reading information from a record carrier. The arrangement comprises a read head having at least one magneto-resistive element (Rmr), a first transistor (Tr1) and a second transistor (Tr2). The base of the first transistor (Tr1) is coupled to the emitter of the second transistor (Tr2) via a first capacitor (6). The base of the second transistor (Tr2) is coupled to the emitter of the first transistor (Tr1) via a second capacitor (8). The arrangement further comprises a non-linear transconductance amplifier (14) having first and second inputs coupled to the output terminals (10, 12) of the arrangement, and having and inverting and non-inverting outputs coupled to the bases of the first and second transistor. The non-linear transconductance amplifier (14) is adapted to supply a control current at its inverting and non-inverting outputs in response to a voltage present across its inputs, such that for first and second input voltages resulting in first and second output currents, respectively, the first input voltage being larger than the second input voltage, the amplification factor of the transconductance means being larger for generating the first output current than for generating the second output current.
摘要翻译：公开了用于从记录载体读取信息的安排。该装置包括具有至少一个磁阻元件（Rmr），第一晶体管（Tr1）和第二晶体管（Tr2）的读取头。第一晶体管（Tr1）的基极经由第一电容器（6）耦合到第二晶体管（Tr2）的发射极。第二晶体管（Tr2）的基极经由第二电容器（8）耦合到第一晶体管（Tr1）的发射极。该装置进一步包括非线性跨导放大器（14），其具有耦合到该装置的输出端子（10,12）的第一和第二输入端，并具有耦合到第一和第二基极的反相和非反相输出晶体管。非线性跨导放大器（14）适于响应于其输入端上存在的电压在其反相和非反相输出端处提供控制电流，使得对于产生第一和第二输出电流的第一和第二输入电压，所述第一输入电压大于所述第二输入电压，所述跨导装置的放大因子对于产生所述第一输出电流而言大于对于产生所述第二输出电流。

5. 发明申请

WO9936791A3 PEAK DETECTION APPARATUS 审中-公开
标题翻译：峰值检测装置
公开(公告)号：WO9936791A3
公开(公告)日：1999-09-16
申请号：PCT/IB9900020
申请日：1999-01-11
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB
发明人： VOORMAN JOHANNES O , RAMALHO JOAO N V L , LUGTHART MARCEL LOUIS
IPC分类号： G01R19/04 , H03K5/1532
CPC分类号： G01R19/04
摘要： An apparatus for detecting peaks of positive and negative polarity in an information signal is disclosed. The apparatus comprises first peak detector means for detecting the positive peaks in the said information signal and second peak detector means for detecting the negative peaks in the said information signal.
摘要翻译：公开了一种用于检测信息信号中的正负极性的装置。该装置包括用于检测所述信息信号中的正峰值的第一峰值检测器装置和用于检测所述信息信号中的负峰值的第二峰值检测器装置。

6. 发明专利

HU224088B1 DEVICE FOR ALTERATION OF BIT-DENSITY OF DATA SIGN IN MAGNETIC-MEDIA RECORDING 未知
公开(公告)号：HU224088B1
公开(公告)日：2005-05-30
申请号：HU0002355
申请日：1999-02-08
申请人： KONINKL PHILIPS ELECTRONICS NV , HEWLETT PACKARD CO
发明人： BERGMANS JOHANNES W M , VOORMAN JOHANNES O , BRITTENHAM STEVEN L
IPC分类号： G11B5/09 , G11B20/10
摘要： Device for write precompensation of data signals to be recorded on a magnetic medium, which device has an input for receiving input data signals and an output for supplying the output signals to be recorded, at least a plurality of the signal transitions in these output data signals being delayed with respect to the corresponding signal transitions in the input data signal, the signal path between the input and the output including a series arrangement of a filter circuit and a hysteresis circuit, which hysteresis circuit receives the output signal of the filter circuit and supplies a binary signal as its output signal. This write precompensation device simply enables allowance to be made for the influence of a large number of preceding symbol values on a transition to be recorded. When the device is combined with a known write compensation device it suffices to use a simple filter.

7. 发明专利

AT294443T 未知
公开(公告)号：AT294443T
公开(公告)日：2005-05-15
申请号：AT99901818
申请日：1999-02-08
申请人： KONINKL PHILIPS ELECTRONICS NV , HEWLETT PACKARD CO
发明人： BERGMANS JOHANNES W M , VOORMAN JOHANNES O , BRITTENHAM STEVEN L
IPC分类号： G11B5/09 , G11B20/10
摘要： Device for write precompensation of data signals to be recorded on a magnetic medium, which device has an input for receiving input data signals and an output for supplying the output signals to be recorded, at least a plurality of the signal transitions in these output data signals being delayed with respect to the corresponding signal transitions in the input data signal, the signal path between the input and the output including a series arrangement of a filter circuit and a hysteresis circuit, which hysteresis circuit receives the output signal of the filter circuit and supplies a binary signal as its output signal. This write precompensation device simply enables allowance to be made for the influence of a large number of preceding symbol values on a transition to be recorded. When the device is combined with a known write compensation device it suffices to use a simple filter.

8. 发明专利

MY123209A DEVICE FOR WRITE COMPENSATION IN MAGNETIC-MEDIA RECORDING 未知
公开(公告)号：MY123209A
公开(公告)日：2006-05-31
申请号：MYPI9900643
申请日：1999-02-24
申请人： KONINKL PHILIPS ELECTRONICS NV , HEWLETT PACKARD CO
发明人： BERGMANS JOHANNES W M , VOORMAN JOHANNES O , BRITTENHAM STEVEN L
IPC分类号： G11B5/09 , G11B20/10
摘要： DEVICE FOR WRITE PRECOMPENSATION OF DATA SIGNALS TO BE RECORDED ON A MAGNETIC MEDIUM, WHICH DEVICE HAS AN INPUT FOR RECEIVING INPUT DATA SIGNALS AND AN OUTPUT FOR SUPPLYING THE OUTPUT SIGNALS TO BE RECORDED, AT LEAST A PLURALITY OF THE SIGNAL TRANSITIONS IN. THESE OUTPUT DATA SIGNALS BEING DELAYED WITH RESPECT TO THE CORRESPONDING SIGNAL TRANSITIONS IN THE INPUT DATA SIGNAL, THE SIGNAL PATH BETWEEN THE INPUT AND THE OUTPUT INCLUDING A SERIES ARRANGEMENT OF A FILTER CIRCUIT AND A HYSTERESIS CIRCUIT, THE HYSTERESIS CIRCUIT RECEIVES THE OUTPUT SIGNAL OF THE FILTER CIRCUIT AND SUPPLIES A BINARY SIGNAL AS ITS OUTPUT SIGNAL.THIS WRITE PRECOMPENSATION DEVICE SIMPLY ENABLES ALLOWANCE TO BE MADE FOR THE INFLUENCE OF A LARGE NUMBER OF PRECEDING SYMBOL VALUES ON A TRANSITION TO BE RECORDED. WHEN THE DEVICE IS COMBINED WITH A KNOWN WRITE COMPENSATION DEVICE IT SUFFICESTO USE A SIMPLE FILTER.MOST ILLUSTRATIVE DRAWING IS (FIGURE 3.)

9. 发明专利

JP2000048305A MAGNETIC INFORMATION READER 失效
公开(公告)号：JP2000048305A
公开(公告)日：2000-02-18
申请号：JP20140099
申请日：1999-07-15
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： LECLERC PATRICK , PIERAERTS ERIC , JOAO N VILLA-LOBOS RAMALHO , BARBOTIN JEAN , VOORMAN JOHANNES O
IPC分类号： G11B5/39 , G11B5/00 , G11B5/02 , G11B5/035 , G11B5/09 , G11B5/40
摘要： PROBLEM TO BE SOLVED: To provide a magnetic information reader which does not require the prior measurement of quiescent resistance in order to bias to a magnetic reluctance bar. SOLUTION: This magnetic information reader has at least one read head including at least one magnetic reluctance bar MR with the aim of forming the data pulses indicating the information to be read by the read head. Its application field is the read head for a hard disk. The reader includes a control loop for controlling the electric power to be consumed by the magnetic reluctance bar MR according to the device. The control loop has a time constant larger than the sustained time of the data pulses. The biasing of the magnetic reluctance bar MR without requiring the measurement of the quiescent resistance is made possible.

10. 发明申请

WO2004015692A3 OPTICAL DISK SYSTEM WITH DELAY-DIFFERENCE DETECTOR WITHOUT DELAY LINES 审中-公开
标题翻译：具有延迟线检测器的光盘系统
公开(公告)号：WO2004015692A3
公开(公告)日：2004-04-29
申请号：PCT/IB0303293
申请日：2003-07-21
申请人： KONINKL PHILIPS ELECTRONICS NV , VOORMAN JOHANNES O , DE JONG GERBEN W , BREKELMANS JOHANNES H A
发明人： VOORMAN JOHANNES O , DE JONG GERBEN W , BREKELMANS JOHANNES H A
IPC分类号： G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0901
摘要： Optical disk systems comprising photo detectors (1) for detecting optical disks comprising amplifiers and slicers (2-5) and delay-difference detectors (6) for detecting delay differences in sliced amplified detection signals are improved by installing delaylineless delay-difference detectors (6) comprising combinatorial-logic circuits (7,8) like inverters, ORs, NORs, ANDs, NANDs and sequential-logic circuits (11-18) like SetResetFlipFlops. Without the prior art delay lines, said delay-difference detectors (6) are of a lower complexity and low costly and can be well integrated. By introducing a first pair of sequential-logic circuits (11,12,15,16) for detecting delay differences between rising edges and a second pair of sequential-logic circuits (13,14,17,18) for detecting delay differences between falling edges, both kinds of edges are being used and the influence of time-jitter is less compared to the situation where just one kind of edge is used. Said delay-difference detector (6) further comprises an analog adder/subtracter (9) for adding/ subtracting sequential-logic circuit output signals and low pass filter(s) (10) located before or after said adder/subtracter (9).
摘要翻译：包括用于检测包括放大器和限幅器（2-5）的光盘的光检测器（1）和用于检测分片放大的检测信号中的延迟差的延迟差检测器（6），通过安装延迟无延迟差分检测器）包括类似反相器，OR，NOR，AND的组合逻辑电路（7,8），NAND和诸如SetResetFlipFlops的顺序逻辑电路（11-18）。在没有现有技术的延迟线的情况下，所述延迟差检测器（6）具有较低的复杂性并且成本低且可以很好地集成。通过引入用于检测上升沿之间的延迟差的第一对顺序逻辑电路（11,12,15,16）和用于检测下降沿之间的延迟差的第二对顺序逻辑电路（13,14,17,18）边缘，正在使用两种边缘，并且与仅使用一种边缘的情况相比，时间抖动的影响较小。所述延迟差检测器（6）还包括用于加/减顺序逻辑电路输出信号的模拟加法器/减法器（9）和位于所述加法器/减法器（9）之前或之后的低通滤波器（10）。

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