METHOD AND APPARATUS FOR ACCESSING DATA FROM DISC WITH LINKING AREA
    31.
    发明申请
    METHOD AND APPARATUS FOR ACCESSING DATA FROM DISC WITH LINKING AREA 审中-公开
    用于从链路区域访问数据的方法和装置

    公开(公告)号:US20100128586A1

    公开(公告)日:2010-05-27

    申请号:US12277379

    申请日:2008-11-25

    IPC分类号: G11B7/00

    摘要: An apparatus for accessing data from a disc with a linking area comprises a pick up head, a servo, a processing unit, a position predictor, and a control signal generator. The pick up head reads data from the disc and generates a read signal. The servo controls the pick up head. The processing unit processes the read signal and controls the servo according to a plurality of control signals. The position predictor tracks time position on the disc and generates position information. The control signal generator receives the position information and generates the control signals according to the position information.

    摘要翻译: 用于从具有链接区域的盘访问数据的装置包括拾取头,伺服器,处理单元,位置预测器和控制信号发生器。 拾取头从盘读取数据并产生读取信号。 伺服控制拾取头。 处理单元处理读取信号并根据多个控制信号控制伺服。 位置预测器跟踪盘上的时间位置并生成位置信息。 控制信号发生器接收位置信息并根据位置信息产生控制信号。

    Power control system and related method
    32.
    发明授权
    Power control system and related method 失效
    电源控制系统及相关方法

    公开(公告)号:US07697399B2

    公开(公告)日:2010-04-13

    申请号:US11758007

    申请日:2007-06-05

    IPC分类号: G11B7/00

    摘要: A method for controlling a specific output power level emitted from a laser diode (LD) in an optical pick-up head unit (OPU) is disclosed. The LD is configured to provide a plurality of output power levels for accessing/recording an optical disc. The method includes: determining a specific power control value according to a first output power level, a second output power level, a first power control value of the first output power level, and the specific output power level, wherein the first output power level is less than the specific output power level and greater than the second output power level; and driving the LD to emit the specific output power level according to the specific power control value, the first power control value, and a second power control value of the second output power level.

    摘要翻译: 公开了一种用于控制从光学拾取头单元(OPU)中的激光二极管(LD)发射的特定输出功率电平的方法。 LD被配置为提供用于访问/记录光盘的多个输出功率电平。 该方法包括:根据第一输出功率电平,第二输出功率电平,第一输出功率电平的第一功率控制值和特定输出功率电平来确定特定功率控制值,其中第一输出功率电平为 小于特定输出功率电平并大于第二输出功率电平; 以及根据所述特定功率控制值,所述第一功率控制值和所述第二输出功率电平的第二功率控制值来驱动所述LD发出所述特定输出功率电平。

    Automatic power control system for optical disc drive and method thereof
    34.
    发明授权
    Automatic power control system for optical disc drive and method thereof 失效
    用于光盘驱动器的自动功率控制系统及其方法

    公开(公告)号:US07474235B2

    公开(公告)日:2009-01-06

    申请号:US11758119

    申请日:2007-06-05

    IPC分类号: H03M7/00

    摘要: An automatic power control system, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.

    摘要翻译: 自动功率控制系统,下采样电路和下采样方法。 自动功率控制系统结合在包括用于接收控制信号以产生激光束的激光二极管的光盘驱动器中; 以及用于检测激光束以产生模拟输入信号的光电检测器。 自动功率控制系统包括模数转换器,下采样电路,比较器和数 - 模转换器。 模数转换器将模拟输入信号转换为数字数据。 耦合到模数转换器的下采样电路包括下采样器,计数器和控制器。 下采样器接收预定量的数字数据以产生表示数据。 耦合到下采样器的计数器计算数字数据量,并且当量等于或超过预定计数时重置下采样器。 耦合到计数器的控制器在数字数据无效时禁用计数器。 耦合到下采样电路的比较器将表示数据与预定目标数据进行比较以产生误差数据。 耦合到比较器的数模转换器将误差数据转换成模拟以产生控制信号。

    POWER CONTROL SYSTEM AND RELATED METHOD
    35.
    发明申请
    POWER CONTROL SYSTEM AND RELATED METHOD 失效
    功率控制系统及相关方法

    公开(公告)号:US20070291620A1

    公开(公告)日:2007-12-20

    申请号:US11758007

    申请日:2007-06-05

    IPC分类号: G11B7/00

    摘要: A method for controlling a specific output power level emitted from a laser diode (LD) in an optical pick-up head unit (OPU) is disclosed. The LD is configured to provide a plurality of output power levels for accessing/recording an optical disc. The method includes: determining a specific power control value according to a first output power level, a second output power level, a first power control value of the first output power level, and the specific output power level, wherein the first output power level is less than the specific output power level and greater than the second output power level; and driving the LD to emit the specific output power level according to the specific power control value, the first power control value, and a second power control value of the second output power level.

    摘要翻译: 公开了一种用于控制从光学拾取头单元(OPU)中的激光二极管(LD)发射的特定输出功率电平的方法。 LD被配置为提供用于访问/记录光盘的多个输出功率电平。 该方法包括:根据第一输出功率电平,第二输出功率电平,第一输出功率电平的第一功率控制值和特定输出功率电平来确定特定功率控制值,其中第一输出功率电平为 小于特定输出功率电平并大于第二输出功率电平; 以及根据所述特定功率控制值,所述第一功率控制值和所述第二输出功率电平的第二功率控制值来驱动所述LD发出所述特定输出功率电平。

    LASER POWER CONTROL SYSTEM AND METHOD
    36.
    发明申请
    LASER POWER CONTROL SYSTEM AND METHOD 有权
    激光功率控制系统及方法

    公开(公告)号:US20070280086A1

    公开(公告)日:2007-12-06

    申请号:US11758018

    申请日:2007-06-05

    IPC分类号: G11B7/00

    摘要: A laser power control system and related method for reducing a settling time in a target laser power transition are disclosed. The laser power control system includes a state decision circuit, for generating a state decision signal according to a selected operational state of a target circuit; a plurality of buffers, for storing a plurality of control data corresponding to a plurality of candidate operational states of the target circuit respectively; and a multiplexer, coupled between the state decision circuit and the buffers, for coupling a selected buffer of the buffers and the target circuit according to the state decision signal for outputting a control datum stored in the selected buffer to the target circuit.

    摘要翻译: 公开了一种用于减少目标激光功率转换中的建立时间的激光功率控制系统和相关方法。 激光功率控制系统包括状态判定电路,用于根据所选择的目标电路的操作状态产生状态判定信号; 多个缓冲器,用于分别存储对应于所述目标电路的多个候选操作状态的多个控制数据; 以及耦合在所述状态判定电路和所述缓冲器之间的多路复用器,用于根据用于将所选择的缓冲器中存储的控制数据输出到所述目标电路的所述状态判定信号来耦合所述缓冲器的选定缓冲器和所述目标电路。

    METHOD OF GAIN CONTROL AND CONTROLLER THEREOF
    37.
    发明申请
    METHOD OF GAIN CONTROL AND CONTROLLER THEREOF 审中-公开
    增益控制方法及其控制方法

    公开(公告)号:US20070280069A1

    公开(公告)日:2007-12-06

    申请号:US11755186

    申请日:2007-05-30

    IPC分类号: G11B20/10

    摘要: The invention provides an automatic gain controller processing an input signal for wobble detection circuit. An exemplary embodiment of the automatic gain controller comprises an envelope detection module, an analog to digital converter, a digital control module, a digital to analog converter, and a variable gain amplifier. The envelope detection module detects an envelope magnitude of an amplified signal. The analog to digital converter converts the envelope magnitude from analog to digital to obtain a digital envelope signal. The digital control module determines a digital gain signal for amplification of the input signal according to the digital envelope signal. The digital to analog converter converts the digital gain signal to an analog gain signal. The variable gain amplifier then amplifies the input signal according to the analog gain signal to obtain the amplified wobble signal.

    摘要翻译: 本发明提供一种自动增益控制器来处理摆动检测电路的输入信号。 自动增益控制器的示例性实施例包括包络检测模块,模数转换器,数字控制模块,数模转换器和可变增益放大器。 包络检测模块检测放大信号的包络幅度。 模数转换器将包络幅度从模拟转换为数字,以获得数字包络信号。 数字控制模块根据数字包络信号确定用于放大输入信号的数字增益信号。 数模转换器将数字增益信号转换为模拟增益信号。 然后,可变增益放大器根据模拟增益信号放大输入信号,以获得放大的摆动信号。