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    • 92. 发明申请
    • PULSE GENERATOR, OPTICAL DISK WRITER AND TUNER
    • 脉冲发生器,光盘写波器和调谐器
    • US20070047416A1
    • 2007-03-01
    • US11466242
    • 2006-08-22
    • DAVID SAWYERNicholas CowleyIsaac Ali
    • DAVID SAWYERNicholas CowleyIsaac Ali
    • G11B7/0045
    • H03K5/135H03K5/133H03K5/15H03K5/1565H03K2005/00286H03L7/18
    • A pulse generator is provided for generating pulses with a selectable variable width and/or delay. The pulse generator comprises an oscillator and a selecting arrangement for selecting how many of a first group of delay elements are connected in series for delaying the oscillator signal. Identical delay elements are connected in series to form a second group. A measuring circuit repeatedly measures the delay provided by the second group, for example providing output pulses whose width or duration is equal to the delay. A reference pulse generator generates a series of reference pulses, each of which is a predetermined fraction of the oscillator period. A control circuit compares the measurement and reference pulses to generate an error signal that is fed back to timing delay control inputs of all the delay elements such that the widths of the measurement and reference pulses are made substantially equal to each other.
    • 提供脉冲发生器用于产生具有可选择的可变宽度和/或延迟的脉冲。 脉冲发生器包括振荡器和选择装置,用于选择串联连接多少第一组延迟元件以延迟振荡器信号。 相同的延迟元件串联连接以形成第二组。 测量电路重复测量由第二组提供的延迟,例如提供其宽度或持续时间等于延迟的输出脉冲。 参考脉冲发生器产生一系列参考脉冲,每个参考脉冲是振荡器周期的预定分数。 控制电路比较测量和参考脉冲以产生反馈到所有延迟元件的定时延迟控制输入的误差信号,使得测量和参考脉冲的宽度彼此基本相等。
    • 93. 发明申请
    • DYNAMIC WRITE STRATEGY MODIFICATION METHOD AND APPARATUS
    • 动态写作策略修改方法和设备
    • US20070047415A1
    • 2007-03-01
    • US11463672
    • 2006-08-10
    • Po Wei Chang
    • Po Wei Chang
    • G11B7/0045
    • G11B7/00456
    • The invention relates to write strategy modification, and in particular, to dynamic write strategy modification. A dynamic write strategy modification apparatus comprises a measurement module, a write strategy development module, and a write laser module. The measurement module measures a plurality of different parameters. The write strategy development module calculates or chooses an optimal parameter from the plurality of different parameters and modifies a default strategy to generate a modified write strategy. The write laser module drives to write data onto an optical disc. A write strategy modification will be repeated until writing is finished.
    • 本发明涉及写策略修改,特别涉及动态写策略修改。 动态写入策略修改装置包括测量模块,写入策略开发模块和写入激光模块。 测量模块测量多个不同的参数。 写策略开发模块从多个不同参数中计算或选择最优参数,并修改默认策略以生成修改后的写策略。 写入激光模块驱动将数据写入光盘。 写入策略修改将重复,直到写入完成。
    • 96. 发明申请
    • Method and device for transforming a first set of write parameters of a write strategy into a second set of write parameters at a different recording speed
    • 用于将写入策略的第一组写入参数转换成不同记录速度的第二组写入参数的方法和设备
    • US20060250917A1
    • 2006-11-09
    • US10565660
    • 2004-07-16
    • Benno TiekeMaarten Van Der Vleuten
    • Benno TiekeMaarten Van Der Vleuten
    • G11B7/0045
    • G11B7/0062
    • The present invention relates to a method and a corresponding device for transforming a first set of write parameters (W) of a write strategy, in particular a 2T write strategy, for recording marks in an information layer (301) of a record carrier (30) by irradiating the information layer (301) with a pulsed radiation beam (32) at a first recording speed (R) into a second set of write parameters (W′) of said write strategy for recording marks at a second recording speed (R′), T representing the length of one period of a reference clock. In order to achieve an at least acceptable recording performance at the second recording speed, it is proposed according to the present invention that the duration of the write pulses is kept substantially constant in time, and the duration of a complete sequence of write pulses for recording a mark is kept substantially constant as a fraction of the reference clock T.
    • 本发明涉及一种用于将写入策略的写入参数(W)的第一组变换为特别是2T写入策略的方法和相应的设备,用于在记录载体(30)的信息层(301)中记录标记 )通过以第一记录速度(R)将具有脉冲辐射束(32)的信息层(301)照射到用于以第二记录速度(R(R))记录标记的所述写入策略的第二组写入参数(W') '),T表示参考时钟的一个周期的长度。 为了在第二记录速度下实现至少可接受的记录性能,根据本发明提出了写入脉冲的持续时间在时间​​上保持基本上恒定,并且用于记录的写入脉冲的完整序列的持续时间 标记作为参考时钟T的一部分保持基本上恒定。
    • 100. 发明授权
    • Data overwriting in probe-based data storage devices
    • US07099257B2
    • 2006-08-29
    • US10440692
    • 2003-05-19
    • Theodoros AntonakopoulosGerd K. BinnigEvangelos S. Eleftheriou
    • Theodoros AntonakopoulosGerd K. BinnigEvangelos S. Eleftheriou
    • G11B7/0045
    • G11B20/10B82Y10/00G01Q80/00G11B9/14H03M5/04H03M5/145
    • Methods are provided for overwriting data in a probe-based data storage device (1) wherein data is represented by the presence and absence of pits formed in a storage surface (4) by a probe of the device. Input data is first coded such that successive bits of a first value in the coded input data are separated by at least one bit of the other value. Overwrite data bits v0, v1, v2, . . . , are generated from the coded input data bits b0, b1, b2, . . . , and the overwrite data bits v0, v1, v2, . . . , are then used to overwrite data on the storage surface (4). According to a first method, the overwrite data bits are generated such that, if a pit represents a bit of said first value in the data storage device (1) then vi={overscore (b)}i−1, for i≧1 and v0 has said first value, and if a pit represents a bit of said other value in the data storage device (1) then vi=bi−1 for i≧1 and v0 has said other value. According to a second method, the overwrite data bits are generated such that, if a pit represents a bit of said first value in the data storage device (1) then vi={overscore (b)}i−1({overscore (b)}i−2+bi) for i≧2, v0 has said first value and v1={overscore (b)}0, and if a pit represents a bit of said other value in the data storage device (1) then vi={overscore (({overscore (b)}i−1({overscore (b)}i−2+bi)))} for i≧2, v0 has said other value and v1=b0. With both methods, the result of the overwrite operation is to record either the coded input data b0, b1, b2, . . . , or its complement {overscore (b)}0, {overscore (b)}1, {overscore (b)}2, . . . , depending on whether a pit represents a bit having the first value or a bit having the other value. This result is independent of the bit values of the data which is overwritten.