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1. 发明申请

US20070121761A1 Phase adjustment circuit 有权
标题翻译：相位调整电路
公开(公告)号：US20070121761A1
公开(公告)日：2007-05-31
申请号：US11514151
申请日：2006-09-01
申请人： Shiro Dosho , Shiro Sakiyama , Yusuke Tokunaga , Seiji Watanabe , Hiroshi Koshida
发明人： Shiro Dosho , Shiro Sakiyama , Yusuke Tokunaga , Seiji Watanabe , Hiroshi Koshida
IPC分类号： H04L27/22
CPC分类号： H03K5/13 , H03K5/15013 , H03K2005/00052 , H03K2005/00273
摘要： A phase adjustment circuit includes first to nth two-phase adjustment circuits. Each two-phase adjustment circuit includes a first logic circuit for performing logical sum of two input signals, a second logic circuit for performing logical product of the two input signals, a first delay circuit having a signal delay equal to that of the second logic circuit and configured to delay a signal output from the first logic circuit, and a second delay circuit having a signal delay equal to that of the first logic circuit and configured to delay a signal output from the second logic circuit. Two signals output from two of the two-phase adjustment circuits in a certain stage are input into one of the two-phase adjustment circuits in the next stage.
摘要翻译：相位调整电路包括第一至第二相位调整电路。每个两相调节电路包括用于执行两个输入信号的逻辑和的第一逻辑电路，用于执行两个输入信号的逻辑积的第二逻辑电路，具有等于第二逻辑电路的信号延迟的信号延迟的第一延迟电路并且被配置为延迟从第一逻辑电路输出的信号;以及第二延迟电路，其具有等于第一逻辑电路的信号延迟的信号延迟，并且被配置为延迟从第二逻辑电路输出的信号。在一定阶段从两相调节电路中输出的两个信号在下一级输入到两相调节电路之一。

2. 发明申请

US20060077802A1 Optical disk device 审中-公开
标题翻译：光盘装置
公开(公告)号：US20060077802A1
公开(公告)日：2006-04-13
申请号：US11203183
申请日：2005-08-15
申请人： Hiroshi Koshida , Masanori Harui , Yasuo Nakata , Yoshimitsu Saka , Koju Konno , Masamichi Katada
发明人： Hiroshi Koshida , Masanori Harui , Yasuo Nakata , Yoshimitsu Saka , Koju Konno , Masamichi Katada
IPC分类号： G11B7/00
CPC分类号： G11B7/0948
摘要： In an optical disk device, an output terminal is connected to an optical pickup, and a preceding sub-beam returning light signal which is electrical signal obtained by converting returning light of a sub-beam preceding an main beam is output through the output terminal. A defect period detection circuit detects a defect period during which a beam is passing through a defective portion on an optical disk based on the preceding sub-beam returning light signal from the output terminal. A servo hold circuit holds tracking servo during the detected defect period. Therefore, even when an amplitude of an RF signal is quickly attenuated during the defect period, the defect period is detected at an early stage of the attenuation, thereby suppressing a change in an amplitude of a tracking error signal to a small level.
摘要翻译：在光盘装置中，输出端子连接到光学拾取器，并且通过输出端子输出作为通过转换主光束之前的子光束的返回光而获得的电信号的先前的子光束返回光信号。缺陷期检测电路根据来自输出端子的前述子光束返回光信号，检测光束通过光盘上的缺陷部分的缺陷期间。伺服保持电路在检测到的缺陷期间保持跟踪伺服。因此，即使当在缺陷期间RF信号的幅度被快速衰减时，在衰减的早期也检测到缺陷期，从而将跟踪误差信号的振幅的变化抑制到小的水平。

3. 发明授权

US08013650B2 Phase adjustment circuit 有权
标题翻译：相位调整电路
公开(公告)号：US08013650B2
公开(公告)日：2011-09-06
申请号：US11514151
申请日：2006-09-01
申请人： Shiro Dosho , Shiro Sakiyama , Yusuke Tokunaga , Seiji Watanabe , Hiroshi Koshida
发明人： Shiro Dosho , Shiro Sakiyama , Yusuke Tokunaga , Seiji Watanabe , Hiroshi Koshida
IPC分类号： H03H11/16
CPC分类号： H03K5/13 , H03K5/15013 , H03K2005/00052 , H03K2005/00273
摘要： A phase adjustment circuit includes first to nth two-phase adjustment circuits. Each two-phase adjustment circuit includes a first logic circuit for performing logical sum of two input signals, a second logic circuit for performing logical product of the two input signals, a first delay circuit having a signal delay equal to that of the second logic circuit and configured to delay a signal output from the first logic circuit, and a second delay circuit having a signal delay equal to that of the first logic circuit and configured to delay a signal output from the second logic circuit. Two signals output from two of the two-phase adjustment circuits in a certain stage are input into one of the two-phase adjustment circuits in the next stage.
摘要翻译：相位调整电路包括第一至第二相位调整电路。每个两相调节电路包括用于执行两个输入信号的逻辑和的第一逻辑电路，用于执行两个输入信号的逻辑积的第二逻辑电路，具有等于第二逻辑电路的信号延迟的信号延迟的第一延迟电路并且被配置为延迟从第一逻辑电路输出的信号;以及第二延迟电路，其具有等于第一逻辑电路的信号延迟的信号延迟，并且被配置为延迟从第二逻辑电路输出的信号。在一定阶段从两相调节电路中输出的两个信号在下一级输入到两相调节电路之一。

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