Means and method for performing multiplication
    1.
    发明授权
    Means and method for performing multiplication 有权
    用于执行乘法的方法和方法

    公开(公告)号:US06636882B1

    公开(公告)日:2003-10-21

    申请号:US09482623

    申请日:2000-01-14

    IPC分类号: G06F772

    CPC分类号: G06F7/724

    摘要: A multiplier for obtaining the product of elements in a Galois Field. The multiplier performs the multiplication of two n-bit elements, A(an-1, an-2, . . . , a3, a2, a1, a0) and B(bn-1, bn-2, . . . , b3, b2, b1, b0) in the Galois Field to yield the product C(cn-1, cn-2, . . . , c3, c2, c1, c0), wherein n≧1 ai(i=0˜n-1), bj(j=0˜n-1), and ck(k=O˜n-1) are all binary bits. The multiplier includes: an AND planer, for performing an AND logic operation of every bit ai in A(an-1, an-2, . . . , a3, a2, a1, a0) and every bit bj in B(bn-1, bn-2, . . . , b3, b2, b1, b0) to obtain (an-1bn-1, an-1bn-2, . . . , an-1b0, an-2bn-1, an-2bn-2, . . . , an-2b0, a0bn-1, a0bn-2, . . . , a0b0); and an XOR planer, for performing an XOR logic operation of the output from the AND planer to obtain C(cn-1, cn-2, . . . , c3, c2, c1, c0).

    摘要翻译: 用于获得伽罗瓦域中元素乘积的乘数。 乘法器执行两个n位元素A(an-1,an-2,...,a3,a2,a1,a0)和B(bn-1,bn-2,...,b3 ,b2,b1,b0),以产生乘积C(cn-1,cn-2,...,c3,c2,c1,c0),其中n> = 1 ai(i = 0〜n -1),bj(j = 0〜n-1)和ck(k = 0〜n-1)都是二进制位。 乘法器包括:AND平面,用于执行A(an-1,an-2,...,a3,a2,a1,a0)中的每个位ai的AND逻辑运算以及B(bn- 1,bn-2,...,b3,b2,b1,b0),得到(an-1bn-1,a-1bn-2,...,a-1b0,an-20bn-1, -2,...,a-2b0,a0bn-1,a0bn-2,...,a0b0); 和XOR刨床,用于对AND刨床的输出执行XOR逻辑运算,以获得C(cn-1,cn-2,...,c3,c2,c1,c0)。

    Table matching for multiplication of elements in Galois Field
    2.
    发明授权
    Table matching for multiplication of elements in Galois Field 有权
    表格匹配用于伽罗瓦域中元素的乘法

    公开(公告)号:US06457035B1

    公开(公告)日:2002-09-24

    申请号:US09435487

    申请日:1999-11-08

    IPC分类号: G06F700

    CPC分类号: G06F7/724 G06F1/0307

    摘要: A table matching method for multiplication of elements in Galois Field. First, a table of the byte value in Galois Field and the corresponding exponent is formed in the hardware. To perform the multiplication between two elements in the Galois Field, the corresponding exponents of the two elements are found out in advance. The two exponents are then added up to obtain a sum. Then, by using the table, a corresponding byte value of the sum can be obtained. The byte value is the product of the two elements in the Galois Field.

    摘要翻译: 一种用于伽罗瓦域中元素乘法的表匹配方法。 首先,在硬件中形成Galois Field中的字节值和相应指数的表。 为了执行伽罗瓦域中的两个元素之间的相乘,预先找出两个元素的相应指数。 然后将两个指数相加以获得总和。 然后,通过使用该表,可以获得相应的字节值。 字节值是伽罗瓦域中两个元素的乘积。

    Method and device for protecting a slicer in reading signals on a defect disc
    3.
    发明授权
    Method and device for protecting a slicer in reading signals on a defect disc 有权
    用于保护切片机读取缺陷盘上的信号的方法和装置

    公开(公告)号:US07626905B2

    公开(公告)日:2009-12-01

    申请号:US11376172

    申请日:2006-03-16

    IPC分类号: G11B27/36

    摘要: A device for protecting a slicer in reading signals on a defect disc from disturbance and instability is provided. The device includes a defect detection unit, a slicer and a logic combination unit. The defect detection unit receives a plurality of defect detection signals to detect various defects for setting a plurality of defect flag signals, wherein the plurality of defect detection signals at least include an envelope signal of a RF signal and bit modulation signals. The slicer receives and digitalizes the RF signal. The logic combination unit performs logic operation on the defect flag signals in order to detect a specified defect and to trigger defect protection for the slicer. A method for protecting a slicer in reading signals on a defect disc is also provided.

    摘要翻译: 提供了一种用于保护切片机在缺陷盘上读取信号免受干扰和不稳定性的装置。 该装置包括缺陷检测单元,限幅器和逻辑组合单元。 缺陷检测单元接收多个缺陷检测信号,以检测用于设置多个缺陷标志信号的各种缺陷,其中多个缺陷检测信号至少包括RF信号的包络信号和位调制信号。 切片器接收和数字化RF信号。 逻辑组合单元对缺陷标志信号进行逻辑运算,以检测指定的缺陷并触发限幅器的缺陷保护。 还提供了一种用于保护切片机在缺陷盘上读取信号的方法。

    Method for detecting defect signals on a disc
    4.
    发明授权
    Method for detecting defect signals on a disc 有权
    用于检测光盘上的缺陷信号的方法

    公开(公告)号:US07539101B2

    公开(公告)日:2009-05-26

    申请号:US11035043

    申请日:2005-01-14

    IPC分类号: G11B5/09

    CPC分类号: G11B7/00375 G11B20/18

    摘要: The present invention provides a method for detecting disk defects of a blank optical disk in a recording and reproducing system when a data-recording operation is performed. In the embodiment, an ATIP and the carrier signal of the ATIP signal, ATFM signals, are compared to obtain a difference between these two signals. A wobble defect flag signal is set if the difference keeps higher than a predetermined threshold for a predetermined time interval. On the contrary, the wobble defect flag signal is cleared if the difference keeps lower than the predetermined threshold for the predetermined time interval.

    摘要翻译: 本发明提供一种当执行数据记录操作时在记录和再现系统中检测空白光盘的盘缺陷的方法。 在本实施例中,比较ATIP和ATIP信号的载波信号ATFM信号以获得这两个信号之间的差。 如果差异在预定时间间隔内保持高于预定阈值,则设置摆动缺陷标志信号。 相反,如果差异在预定时间间隔内保持低于预定阈值,则摆动缺陷标志信号被清除。

    Method for adjusting a control parameter and optical disc drive server system using the same
    5.
    发明授权
    Method for adjusting a control parameter and optical disc drive server system using the same 失效
    用于调整控制参数的方法和使用其的光盘驱动器服务器系统

    公开(公告)号:US07313057B2

    公开(公告)日:2007-12-25

    申请号:US10892849

    申请日:2004-07-16

    IPC分类号: G11B7/00

    CPC分类号: G11B7/0941

    摘要: A method for adjusting a control parameter is adopted in an optical disc drive server system, which has a compensator, a control loop and a parameter regulator. The control loop includes an optical pickup and outputs a first tracking error signal/focus error signal. The compensator adjusts the first tracking error signal/focus error signal to obtain a compensated signal for driving the optical pickup to read/write the optical disc. The parameter regulator generates a first sinusoidal signal to be inputted to the control loop, which amplifies the first sinusoidal signal to obtain a second sinusoidal signal. The parameter regulator filters the second sinusoidal signal and calculates a relationship between the first sinusoidal signal and the second sinusoidal signal to obtain a control parameter. The parameter regulator adjusts the compensator to output the compensated signal according to the control parameter.

    摘要翻译: 在具有补偿器,控制回路和参数调节器的光盘驱动器服务器系统中采用调整控制参数的方法。 控制回路包括光拾取器并输出第一跟踪误差信号/聚焦误差信号。 补偿器调整第一跟踪误差信号/聚焦误差信号,以获得用于驱动光学拾取器读/写光盘的补偿信号。 参数调节器产生要输入到控制回路的第一正弦信号,其放大第一正弦信号以获得第二正弦信号。 参数调节器对第二正弦信号进行滤波,并计算第一正弦信号和第二正弦信号之间的关系,以获得控制参数。 参数调节器根据控制参数调整补偿器输出补偿信号。

    Method and device for detecting the signal on a disc having a defect by utilizing an RF signal and its derivatives
    6.
    发明授权
    Method and device for detecting the signal on a disc having a defect by utilizing an RF signal and its derivatives 失效
    用于通过利用RF信号及其衍生物来检测具有缺陷的盘的信号的方法和装置

    公开(公告)号:US07301871B2

    公开(公告)日:2007-11-27

    申请号:US10791532

    申请日:2004-03-03

    IPC分类号: G11B27/36

    摘要: The device includes a servo control unit, a data path control unit, a defect detection unit, and a logic combination unit. The data path control unit further includes a preamplifier receiving data from a lens and generating RF signals for data process. The defect detection unit receives the various signals for detecting different kinds of defects to set corresponding defect flag signals. The defect detection unit includes means for ADefect1 detection, means for EFMDefect detection, means for RPDefect detection, means for Interruption detection, means for ADefect detection, and means for DSPDefect detection.

    摘要翻译: 该装置包括伺服控制单元,数据路径控制单元,缺陷检测单元和逻辑组合单元。 数据路径控制单元还包括从镜头接收数据并产生用于数据处理的RF信号的前置放大器。 缺陷检测单元接收用于检测不同种类的缺陷的各种信号,以设置相应的缺陷标志信号。 缺陷检测单元包括用于ADEULT 1检测的装置,用于EFMDefect检测的装置,用于RPDefect检测的装置,用于中断检测的装置,用于AD检测的装置,以及用于DSPDefect检测的装置。

    Method for estimating power compensation and recording power of a tilting disk
    7.
    发明申请
    Method for estimating power compensation and recording power of a tilting disk 有权
    用于估计倾斜盘的功率补偿和记录功率的方法

    公开(公告)号:US20070230294A1

    公开(公告)日:2007-10-04

    申请号:US11396661

    申请日:2006-04-04

    IPC分类号: G11B7/00

    CPC分类号: G11B7/0956 G11B7/126

    摘要: The method for estimating recording power Pow_tilting of a tilting part of a tilting disk is shown based on a power compensation formula: Pow_comp=A*(A*K). After a focus error (FE) signal of the tilting part of the tilting disk is manipulated as a focus servo output (FOO) signal, the parameter A is derived by low-pass filtering the FOO signal. Thereafter, another parameter K is then derived from a reference lookup table by using curve fitting approach based on parameter A such that the power compensation Pow_comp could be estimated by substituting parameters A and K into the above formula. A recording power Pow_tilting of the tilting part of the tilting disk could be estimated by adding a given recording power Piwrtpwr to the power compensation Pow_comp.

    摘要翻译: 基于功率补偿公式Pow_comp = A *(A * K)示出倾斜盘的倾斜部的估计记录功率的方法。 在将倾斜盘的倾斜部分的焦点误差(FE)信号作为聚焦伺服输出(FOO)信号进行操作之后,通过对FOO信号进行低通滤波来导出参数A. 此后,通过使用基于参数A的曲线拟合方法从参考查找表导出另一参数K,使得可以通过将参数A和K代入上述公式来估计功率补偿Pow_comp。 可以通过将给定的记录功率Piwrtpwr添加到功率补偿Pow_comp来估计倾斜盘的倾斜部分的记录功率Pow_tilting。

    Method for controlling read power and open-loop read control device using the same
    8.
    发明申请
    Method for controlling read power and open-loop read control device using the same 失效
    用于控制读取功率的方法和使用其的开环读取控制装置

    公开(公告)号:US20060028939A1

    公开(公告)日:2006-02-09

    申请号:US10892770

    申请日:2004-07-16

    IPC分类号: G11B7/12 G11B7/00

    CPC分类号: G11B7/1263 G11B7/1267

    摘要: A method for controlling read power and an open-loop read control device using the same. The open-loop read control device is used in an optical disk writer and includes a memory, a DAC and an amplifier. The optical disk writer includes a pickup head device having a laser diode. When writing is disabled, the read power of the optical disk writer for reading the disk corresponds to a specific voltage. The memory stores a relationship curve and outputs a corresponding reference value corresponding to the specific voltage. The DAC converts the corresponding reference value into an analog corresponding reference value. The amplifier receives the analog corresponding reference value and outputs a read power control voltage, which controls the laser diode to generate a substantially constant read power in the write process.

    摘要翻译: 一种用于控制读取功率的方法和使用其的开环读取控制装置。 开环读取控制装置用于光盘写入器并且包括存储器,DAC和放大器。 光盘刻录机包括具有激光二极管的拾取头装置。 当禁止写入时,用于读取光盘的光盘写入器的读取功率对应于特定电压。 存储器存储关系曲线并输出与特定电压对应的相应参考值。 DAC将相应的参考值转换为模拟相应的参考值。 放大器接收模拟相应的参考值,并输出读取功率控制电压,其控制激光二极管以在写入过程中产生基本上恒定的读取功率。

    Defect protecting circuit and a method for data slicer in an optical drive
    9.
    发明授权
    Defect protecting circuit and a method for data slicer in an optical drive 失效
    缺陷保护电路和光驱中数据限幅器的方法

    公开(公告)号:US06914861B2

    公开(公告)日:2005-07-05

    申请号:US10012645

    申请日:2001-11-13

    IPC分类号: G11B7/005 G11B20/10 G11B7/00

    摘要: A defect protecting circuit and a method for data slicer in an optical drive is disclosed. As a defect occurs in a disk, the gain of the data slicer is switched to a high gain. After the defect does not occur further, the gain is switched back to a normal gain. Therefore the slicing level can return back to a correct slicing level for reducing incorrect data after the defect terminates, and the jitter in the output data is also reduced.

    摘要翻译: 公开了一种在光驱中的数据限幅器的缺陷保护电路和方法。 由于在盘中出现缺陷,数据限幅器的增益被切换到高增益。 在不再进一步发生缺陷之后,增益被切换回正常增益。 因此,切片级别可以返回到正确的切片级别,以在缺陷终止后减少不正确的数据,并且输出数据中的抖动也减少。

    Adaptive USB charging method and system
    10.
    发明授权
    Adaptive USB charging method and system 有权
    自适应USB充电方式和系统

    公开(公告)号:US08892912B2

    公开(公告)日:2014-11-18

    申请号:US13100110

    申请日:2011-05-03

    IPC分类号: G06F1/26

    摘要: An adaptive universal serial bus (USB) charging method and system are disclosed. In a low-power state, a USB device is charged with a non-USB charging mode. The non-USB charging mode is retained when no variation of a data signal coupled to the USB device is detected. When the data signal possesses variation for a first period, it is switched to a third proprietary charging mode.

    摘要翻译: 公开了一种自适应通用串行总线(USB)充电方法和系统。 在低功耗状态下,USB设备以非USB充电模式进行充电。 当不检测到耦合到USB设备的数据信号的变化时,保持非USB充电模式。 当数据信号具有第一周期的变化时,它被切换到第三专有充电模式。