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1. 发明申请

US20110261661A1 SEMICONDUCTOR INTEGRATED CIRCUIT AND OPTICAL DISK DEVICE HAVING THE SAME 失效
标题翻译：半导体集成电路和具有该半导体集成电路的光盘设备
公开(公告)号：US20110261661A1
公开(公告)日：2011-10-27
申请号：US13094569
申请日：2011-04-26
申请人： Toshiya MATSUDA , Hiroshi IDE
发明人： Toshiya MATSUDA , Hiroshi IDE
IPC分类号： G11B7/095
CPC分类号： G11B7/0943 , G11B7/0053 , G11B7/0903 , G11B7/0906 , G11B20/10009 , G11B20/18 , G11B2007/0006 , G11B2020/1239 , G11B2220/2541
摘要： The present invention achieves higher precision and lower power consumption by reducing semiconductor chip occupation area. A semiconductor integrated circuit which can be mounted on an optical disk device has: a wobble signal generating circuit capable of receiving first, second, third, and fourth light reception output signals A, B, C, and D of a light receiving element in an optical pickup and detecting a wobble in a recordable disk; a differential phase detection signal (DPD) generating circuit for tracking an unrecordable disk; and two A/D converters and an arithmetic circuit. The first, second, third, and fourth light reception output signals are selectively supplied to the two A/D converters, the arithmetic circuit in a first operation mode generates a first addition output signal of A and C and a second addition output signal of B and D, the DPD generating circuit generates a digital phase comparison signal, the arithmetic circuit in a second operation mode generates a third addition output signal of A and D and a fourth addition output signal of B and C, and the wobble signal generating circuit generates a digital wobble signal.
摘要翻译：本发明通过减少半导体芯片的占用面积来实现更高的精度和更低的功耗。可以安装在光盘装置上的半导体集成电路具有：摆动信号发生电路，其能够接收光接收元件的第一，第二，第三和第四光接收输出信号A，B，C和D 光拾取器和检测可记录盘中的摆动; 用于跟踪不可记录盘的差分相位检测信号（DPD）产生电路; 和两个A / D转换器和一个运算电路。第一，第二，第三和第四光接收输出信号被选择性地提供给两个A / D转换器，运算电路在第一操作模式中产生A和C的第一相加输出信号和B的第二相加输出信号和D，DPD发生电路产生数字相位比较信号，第二运行模式中的运算电路产生A和D的第三相加输出信号和B和C的第四加法输出信号，并且摆动信号产生电路产生数字摆频信号。

2. 发明申请

US20130010579A1 OPTICAL DISK DEVICE AND SEMICONDUCTOR DEVICE 审中-公开
标题翻译：光盘设备和半导体器件
公开(公告)号：US20130010579A1
公开(公告)日：2013-01-10
申请号：US13543803
申请日：2012-07-07
申请人： Toshiya MATSUDA , Mitsunori KOBAYASHI
发明人： Toshiya MATSUDA , Mitsunori KOBAYASHI
IPC分类号： G11B7/095
CPC分类号： G11B7/0945 , G11B7/094
摘要： An optical disk device is provided in which stable operation is realized even when an offset amount of a signal to be used for servo control changes due to environmental variations. The optical disk device generates a signal for servo control based on signals corresponding to a reflected light of a laser light irradiated to an optical disk, and detects an offset superimposed on a signal for the servo control. The optical disk device compensates the amount of the adjusted offset which has been set up so as to reduce the offset amount in initial setting for light detection corresponding to an optical disk loaded, according to the amount of change of the offset amount detected, adjusts the signal to be used for the servo control based on the amount of the offset control after the compensation, and performs the servo control based on the adjusted signal.
摘要翻译：提供一种光盘装置，其中即使当由于环境变化而要用于伺服控制的信号的偏移量变化时，也能够实现稳定的操作。光盘装置基于与照射到光盘的激光的反射光对应的信号，生成用于伺服控制的信号，并且检测叠加在用于伺服控制的信号上的偏移。光盘装置根据检测到的偏移量的变化量，补偿已设定的经调整的偏移量，以减少与装入的光盘对应的光检测的初始设定中的偏移量，信号用于基于补偿后的偏移控制量的伺服控制，并且基于调整后的信号执行伺服控制。

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