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1. 发明授权

US07016277B2 Method and device for generating a write clock of a constant angular velocity optical disk device 失效
标题翻译：用于产生恒定角速度光盘装置的写入时钟的方法和装置
公开(公告)号：US07016277B2
公开(公告)日：2006-03-21
申请号：US10248443
申请日：2003-01-21
申请人： Su-Hong Chou , Chih-Yang Liaw
发明人： Su-Hong Chou , Chih-Yang Liaw
IPC分类号： G11B7/60
CPC分类号： H03L7/18 , G11B20/10 , G11B20/1403 , G11B27/24 , G11B2220/216 , G11B2220/2545 , H03L7/087
摘要： A method for generating a write clock of a constant angular velocity compact storage device and the device thereof. The compact storage device has a counter for generating a count number by a reference clock counting a wobble signal, and a phase detector for generating an adjustment value by comparing a phase shift between an ATIP synchronization signal and an encoded subcode frame synchronization signal. According to the count number and the adjustment value, a rectification value is found, and the rectification value and the reference clock is used for generating a reference write clock to modify the encoded subcode frame synchronization signal. If the phase shift between an ATIP synchronization signal and an encoded subcode frame synchronization signal is smaller than a predetermined value, the reference write clock is the write clock used by the compact storage device.
摘要翻译：一种用于产生恒定角速度紧凑型存储装置的写入时钟的方法及其装置。紧凑型存储装置具有用于通过计数摆动信号的基准时钟产生计数数的计数器，以及通过比较ATIP同步信号和编码子码帧同步信号之间的相移来生成调整值的相位检测器。根据计数值和调整值，找到整流值，整流值和基准时钟用于产生参考写入时钟，以修改编码的子代码帧同步信号。如果ATIP同步信号和编码子码帧同步信号之间的相移小于预定值，则参考写入时钟是紧凑型存储设备使用的写入时钟。

2. 发明授权

US06961293B2 Method and related device for achieving stable writing state of compact disk drive by adjusting writing clock 有权
标题翻译：通过调整写入时钟实现压缩磁盘驱动器的稳定写入状态的方法及相关装置
公开(公告)号：US06961293B2
公开(公告)日：2005-11-01
申请号：US10249084
申请日：2003-03-14
申请人： Chih-Yang Liaw
发明人： Chih-Yang Liaw
IPC分类号： G11B19/28 , G11B20/14 , G11B27/19 , G11B27/24 , G11B7/00
CPC分类号： G11B27/24 , G11B19/28 , G11B20/1403 , G11B2220/218 , G11B2220/2545
摘要： A method and related circuit for synchronizing a writing clock with a wobble clock of a compact disk (CD) drive. The CD drive is capable of rotating a CD that has a data track for recording data and a wobble track. The CD drive is capable of generating the wobble clock according to movement of the wobble track while the CD is rotating. Also the CD drive is capable of writing data on the data track according to the writing clock. The method includes adjusting the frequency of the writing clock so as to synchronize the writing clock and the wobble clock.
摘要翻译：一种用于使写入时钟与光盘（CD）驱动器的摆动时钟同步的方法和相关电路。 CD驱动器能够旋转具有用于记录数据和摆动轨迹的数据轨道的CD。 CD驱动器能够在CD旋转时根据摆动轨迹的移动产生摆动时钟。此外，CD驱动器能够根据写入时钟在数据轨道上写入数据。该方法包括调整写入时钟的频率，以使写入时钟和摆动时钟同步。

3. 发明授权

US06680881B2 Method for deciding the direction of pick-up head of disk driver while crossing tracks 有权
标题翻译：用于决定磁道驱动器在拾取轨迹时的方向的方法
公开(公告)号：US06680881B2
公开(公告)日：2004-01-20
申请号：US10063943
申请日：2002-05-28
申请人： Yi-Chung Chan , Chih-Yang Liaw
发明人： Yi-Chung Chan , Chih-Yang Liaw
IPC分类号： G11B2108
CPC分类号： G11B7/08529 , G11B7/08541
摘要： A method for determining a track-cross direction of a pick-up head of an optical disk drive includes the following steps. (1) When a track-cross velocity of the pick-up head was determined to be greater than a predetermined velocity, it is determined whether the track-cross velocity of the pick-up head is changed to be less than the predetermined velocity. If not, the track-cross direction remains unchanged. (2) When the track-cross velocity of the pick-up head was determined to be less than the predetermined velocity, it is determined whether the track-cross velocity of the pick-up head is changed to be greater than the predetermined velocity. If not, the track-cross direction is determined according to a phase difference between a first track-cross signal and a second track-cross signal.
摘要翻译：用于确定光盘驱动器的拾取头的轨道横向的方法包括以下步骤。（1）当拾取头的轨道横截面速度被确定为大于预定速度时，确定拾取头的轨道横截面速度是否被改变为小于预定速度。如果没有，轨道横向保持不变。（2）当拾取头的轨道横截面速度被确定为小于预定速度时，确定拾取头的轨道横截面速度是否被改变为大于预定速度。如果不是，则根据第一轨道交叉信号和第二轨道交叉信号之间的相位差确定轨道横截面方向。

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