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    • 1. 发明授权
    • Automatic power control system for optical disc drive and method thereof
    • 用于光盘驱动器的自动功率控制系统及其方法
    • US08149146B2
    • 2012-04-03
    • US13008485
    • 2011-01-18
    • Bing-Yu HsiehMing-Jiou YuKuo-Jung LanShu-Hung ChouChih-Ching ChenChia-Wei Liao
    • Bing-Yu HsiehMing-Jiou YuKuo-Jung LanShu-Hung ChouChih-Ching ChenChia-Wei Liao
    • H03M7/00
    • H03M1/1225G11B7/0903G11B7/0912G11B7/0941G11B7/1263H03M1/129
    • An automatic power control system, an automatic power control method, 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.
    • 自动功率控制系统,自动功率控制方法,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。
    • 2. 发明申请
    • Automatic Power Control System for Optical Disc Drive and Method Thereof
    • 光盘驱动自动电源控制系统及其方法
    • US20110122747A1
    • 2011-05-26
    • US13008485
    • 2011-01-18
    • Bing-Yu HsiehMing-Jiou YuKuo-Jung LanShu-Hung ChouChih-Ching ChenChia-Wei Liao
    • Bing-Yu HsiehMing-Jiou YuKuo-Jung LanShu-Hung ChouChih-Ching ChenChia-Wei Liao
    • G11B20/10
    • H03M1/1225G11B7/0903G11B7/0912G11B7/0941G11B7/1263H03M1/129
    • An automatic power control system, an automatic power control method, 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.
    • 自动功率控制系统,自动功率控制方法,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。
    • 6. 发明申请
    • SYSTEM AND METHOD FOR GENERATING OUTPUT SIGNALS INDICATING SPECIFIC AREAS ON AN OPTICAL DISC UTILIZING A PROTECTION MEANS
    • 用于生成使用保护手段的光盘上的特定区域输出信号的系统和方法
    • US20070183286A1
    • 2007-08-09
    • US11307419
    • 2006-02-06
    • Shu-Hung ChouMeng-Hsueh Lin
    • Shu-Hung ChouMeng-Hsueh Lin
    • G11B19/04
    • G11B7/00745G11B7/00718G11B20/1217G11B20/18G11B27/24G11B2020/1274G11B2020/1287G11B2220/2575
    • A system for generating an output signal indicating a specific area on an optical disc is disclosed. The system includes: a detecting circuit, a header signal generator, a protection circuit, a counter and an output signal generator. The detecting circuit detects pre-recorded address information on the optical disc to generate a detection signal. The header signal generator detects headers on the optical disc to generate a header signal. The protection circuit computes a first counter value and reloads the first counter value according to the detection signal and the header signal, wherein the protection circuit does not reload the first counter value twice successively due to the header signal. The counter computes a second counter value and reloads the second counter value according to the first counter value. The output signal generator generates the output signal according to the first counter value.
    • 公开了一种用于产生指示光盘上的特定区域的输出信号的系统。 该系统包括:检测电路,标题信号发生器,保护电路,计数器和输出信号发生器。 检测电路检测光盘上的预先记录的地址信息以产生检测信号。 报头信号发生器检测光盘上的报头以产生报头信号。 保护电路根据检测信号和标题信号计算第一计数器值并重新加载第一计数器值,其中由于标题信号,保护电路不连续重新加载第一计数器值两次。 计数器计算第二计数器值,并根据第一计数器值重新加载第二计数器值。 输出信号发生器根据第一计数器产生输出信号。
    • 8. 发明授权
    • System and method for generating an output signal indicating a specific area on an optical disc utilizing an adjustable specific time
    • 用于利用可调节的特定时间产生指示光盘上的特定区域的输出信号的系统和方法
    • US07961577B2
    • 2011-06-14
    • US11308179
    • 2006-03-10
    • Meng-Hsueh LinShu-Hung ChouShu-Ching Chen
    • Meng-Hsueh LinShu-Hung ChouShu-Ching Chen
    • G11B7/00
    • G11B7/0053G11B7/08505
    • Disclosed is a system for generating an output signal indicating a specific area on an optical disc. The system includes an optical pick-up head signal generator, a detecting apparatus, and an output signal generating apparatus. The optical pick-up head signal generator is used for generating an optical pick-up head signal. The detecting apparatus is used for detecting pre-recorded address information on the optical disc to generate a detection signal. Also, a output signal generating apparatus, which is coupled to the optical pick-up head signal generator and the detecting apparatus, is used for receiving the optical pick-up head signal and the detection signal to generate the output signal according to at least one of the optical pick-up head signal and the detection signal, the output signal generating apparatus not generating the output signal according to the optical pick-up head signal after a predetermined time.
    • 公开了一种用于产生指示光盘上的特定区域的输出信号的系统。 该系统包括光学拾取头信号发生器,检测装置和输出信号发生装置。 光学拾取头信号发生器用于产生光学拾取头信号。 检测装置用于检测光盘上的预先记录的地址信息以产生检测信号。 此外,耦合到光拾取头信号发生器和检测装置的输出信号发生装置用于接收光拾取头信号和检测信号,以根据至少一个 的光拾取头信号和检测信号,输出信号发生装置在预定时间之后不根据光学拾取头信号产生输出信号。
    • 10. 发明授权
    • Apparatus for demodulating address in pre-groove symbols and apparatus for decoding pre-pit symbols
    • 用于解调前槽符号中的地址的装置和用于解码预凹坑符号的装置
    • US07693012B2
    • 2010-04-06
    • US11755237
    • 2007-05-30
    • Bing-Yu HsiehYuh ChengShu-Hung ChouJung-Feng Ho
    • Bing-Yu HsiehYuh ChengShu-Hung ChouJung-Feng Ho
    • G11B7/00
    • G11B20/1419G11B27/24G11B2020/1269
    • The invention provides an apparatus for demodulating an Address In Pre-groove (ADIP) symbol. The ADIP symbol is carried by a wobble signal of an optical disk and comprises a series of ADIP bits permuted according to one of a plurality of permutation patterns to make up the ADIP symbol. A wobble extraction module extracts the wobble signal from the optical disk. A reference wobble generator generates a reference wobble with the same frequency and phase as a fundamental frequency and phase of a positive wobble cycle of the wobble signal. A waveform difference measurement module then measures a difference between the wobble signal and the reference wobble to obtain a series of difference measurement values respectively corresponding to the ADIP bits. A pattern matching module then compares probabilities of the permutation of the ADIP bits agreeing with each of the permutation patterns according to the difference measurement values to determine the ADIP symbol.
    • 本发明提供了一种用于解调预编码地址(ADIP)符号的装置。 ADIP符号由光盘的摆动信号承载,并且包括根据多个置换模式中的一个置换的一系列ADIP位,以构成ADIP符号。 摆动提取模块从光盘中提取摆动信号。 参考摆动发生器产生与摆动信号的正摆动周期的基频和相位相同的频率和相位的参考摆动。 波形差测量模块然后测量摆动信号和参考摆动之间的差异,以获得分别对应于ADIP位的一系列差分测量值。 模式匹配模块然后根据差值测量值来比较与每个置换模式一致的ADIP位置的概率,以确定ADIP符号。