公开(公告)号：US08223070B2

公开(公告)日：2012-07-17

申请号：US12365991

申请日：2009-02-05

申请人： Mikhail Vasilyev ,  Andrei Bochkovskiy ,  Hsin-Min Peng ,  Tsai-Hsin Tsai ,  Chun-Hsien Wu ,  Ping-Hsin Kan ,  Yu Tai Chang ,  Steve Wiyi Yang

发明人： Mikhail Vasilyev ,  Andrei Bochkovskiy ,  Hsin-Min Peng ,  Tsai-Hsin Tsai ,  Chun-Hsien Wu ,  Ping-Hsin Kan ,  Yu Tai Chang ,  Steve Wiyi Yang

IPC分类号： G01S19/23 ,  G01S19/24

CPC分类号： G01S19/235

摘要： A high accuracy satellite signal receiving controller and associated method is provided. The high accuracy satellite signal receiving controller includes a frequency synthesizer, and an analog-to-digital converter (ADC), a Global Positioning System (GPS) receiving module and a control unit. The frequency synthesizer, coupled to an external non-temperature-compensated crystal oscillator (non-TXCO), generates an oscillating frequency signal to the GPS receiving module. The ADC converts an analog temperature signal into a digital temperature signal. The control unit, coupled to the ADC, adaptively updates temperature/frequency offset data.

摘要翻译： 提供了一种高精度卫星信号接收控制器及相关方法。 高精度卫星信号接收控制器包括频率合成器，模数转换器（ADC），全球定位系统（GPS）接收模块和控制单元。 耦合到外部非温度补偿晶体振荡器（非TXCO）的频率合成器向GPS接收模块产生振荡频率信号。 ADC将模拟温度信号转换为数字温度信号。 耦合到ADC的控制单元自适应地更新温度/频率偏移数据。

公开(公告)号：US06954408B2

公开(公告)日：2005-10-11

申请号：US10249309

申请日：2003-03-31

申请人： Chih-Kung Hsu ,  Tsai-Hsin Tsai

发明人： Chih-Kung Hsu ,  Tsai-Hsin Tsai

IPC分类号： G11B7/085 ,  G11B7/00

CPC分类号： G11B7/08541

摘要： A radio frequency ripple zero crossing signal calibration method for an optical disk reader undergoing a track following to track seeking transition is disclosed. The method utilizes sampling to obtain radio frequency ripple peak level during a track seeking operation and radio frequency ripple DC level during a track following operation and using their differences as a calibrated value. Through the calibrated value, the radio frequency ripple zero crossing slice level is modified so that a correct radio frequency ripple zero crossing signal is obtained during a track following to track seeking transition. In a track following to seeking transition, this arrangement prevents distortion of the radio frequency ripple signal and corresponding drift in the radio frequency zero crossing signal that may lead to errors in computing moving speed and counting tracks of the pickup head. Hence, search capacity of the optical disk reader is improved and the pickup head is better controlled.

摘要翻译： 公开了一种用于经历跟踪追踪过渡之后的轨道的光盘阅读器的射频纹波零交叉信号校准方法。 该方法利用采样获取轨迹寻找操作期间的射频波纹峰值电平，并且在跟踪操作期间使用它们的差异作为校准值。 通过校准值，修改射频纹波零交叉切片电平，使得在跟踪追踪转换之后的轨道期间获得正确的射频纹波过零信号。 在寻求转换之后的轨道中，这种布置可以防止射频纹波信号的失真和射频过零信号中的相应漂移，这可能导致计算移动速度和计数拾取头的轨迹的误差。 因此，提高了光盘读取器的搜索能力，并且更好地控制拾取头。

公开(公告)号：US20090262018A1

公开(公告)日：2009-10-22

申请号：US12365991

申请日：2009-02-05

申请人： Mikhail VASILYEV ,  Andrei BOCHKOVSKIY ,  Hsin-Min PENG ,  TSAI-HSIN TSAI ,  Chun-Hsien WU ,  Ping-Hsin KAN ,  Yu Tai CHANG ,  Steve Wiyi YANG

发明人： Mikhail VASILYEV ,  Andrei BOCHKOVSKIY ,  Hsin-Min PENG ,  TSAI-HSIN TSAI ,  Chun-Hsien WU ,  Ping-Hsin KAN ,  Yu Tai CHANG ,  Steve Wiyi YANG

IPC分类号： G01S1/00

CPC分类号： G01S19/235

摘要： A high accuracy satellite signal receiving controller and associated method is provided. The high accuracy satellite signal receiving controller includes a frequency synthesizer, and an analog-to-digital converter (ADC), a Global Positioning System (GPS) receiving module and a control unit. The frequency synthesizer, coupled to an external non-temperature-compensated crystal oscillator (non-TXCO), generates an oscillating frequency signal to the GPS receiving module. The ADC converts an analog temperature signal into a digital temperature signal. The control unit, coupled to the ADC, adaptively updates temperature/frequency offset data.

摘要翻译： 提供了一种高精度卫星信号接收控制器及相关方法。 高精度卫星信号接收控制器包括频率合成器，模数转换器（ADC），全球定位系统（GPS）接收模块和控制单元。 耦合到外部非温度补偿晶体振荡器（非TXCO）的频率合成器向GPS接收模块产生振荡频率信号。 ADC将模拟温度信号转换为数字温度信号。 耦合到ADC的控制单元自适应地更新温度/频率偏移数据。

公开(公告)号：US06917171B2

公开(公告)日：2005-07-12

申请号：US10664644

申请日：2003-09-17

申请人： Tsai-Hsin Tsai ,  Umi Huang ,  Yu-I Chen

发明人： Tsai-Hsin Tsai ,  Umi Huang ,  Yu-I Chen

IPC分类号： G11B19/20 ,  H02P3/20

CPC分类号： G11B19/20 ,  Y10S388/932

摘要： A control device and a method of stopping the spindle motor or an optical disc system. The control device primarily includes an optical disc control chip, a motor driving circuit and a spindle motor. The optical disc control chip generates and delivers a spindle motor control signal to the motor driving circuit for driving the spindle motor into rotation. During a first period, the spindle motor control signal level is controlled to produce the largest reversing torque permitted by the spindle motor for braking purpose. During a second period, the spindle motor control signal level decreases gradually to approach to a lock level that is smaller than that for actuating the spindle motor, so that the reversing torque is also decreasing gradually. During a third period, the spindle motor control signal at a level between the lock level and a motor stoppage level indicative of the spindle motor remaining stationary is applied to the motor driving circuit so that a locking torque which has the same rotation direction with that for read-/write-operations is derived in the spindle motor. The locking torque is controlled at a level less than that for actuating the spindle motor again. Finally, the spindle motor remains stationary after the third period terminates.

摘要翻译： 一种控制装置和停止主轴电机或光盘系统的方法。 控制装置主要包括光盘控制芯片，马达驱动电路和主轴马达。 光盘控制芯片生成主轴电动机控制信号并将其传送到电动机驱动电路，以驱动主轴电机转动。 在第一阶段期间，主轴电动机控制信号电平被控制以产生用于制动目的的主轴电动机允许的最大反向转矩。 在第二时段期间，主轴电动机控制信号电平逐渐降低，接近小于用于致动主轴电动机的锁定水平，使得反向转矩也逐渐减小。 在第三时间段期间，主动马达控制信号处于锁定水平与表示主轴马达保持静止的马达停止水平之间的水平，被施加到马达驱动电路，使得具有相同旋转方向的锁定转矩与 读/写操作在主轴电机中得出。 锁定扭矩被控制在比再次驱动主轴电机的水平更低的水平。 最后，主轴电机在第三个周期结束后保持静止。