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1. 发明公开

EP0853313A3 Optical disc system 失效
标题翻译：系统光盘
公开(公告)号：EP0853313A3
公开(公告)日：2007-01-03
申请号：EP98200192.7
申请日：1996-01-18
申请人： DISCOVISION ASSOCIATES
发明人： Crupper, Randolph Scott , Grassens, Leonardus Johannes , Davis, Marvin Benjamin , Lewis, David Earl , Getreuer, Kurt, Walter , Schell, David Louis
IPC分类号： G11B7/125 , H01S5/06
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： An optical disc system includes a laser driver for controlling an electrical current directed to a laser. The driver includes means for switching the drive voltage between a first voltage level and a second voltage level, so that electric power is only consumed when the laser is energized, thereby achieving enhanced rise and fall switching characteristics. The means for applying the drive voltage may include a CMOS buffer output.

2. 发明授权

EP0737963B1 Seek actuator for optical recording 失效
标题翻译：寻求光学记录执行器
公开(公告)号：EP0737963B1
公开(公告)日：2002-10-30
申请号：EP96301864.3
申请日：1996-03-19
申请人： DISCOVISION ASSOCIATES
发明人： Grassens, Leonardus Johannes , Getreuer, Kurt Walter
IPC分类号： G11B7/085 , G11B7/09
CPC分类号： G11B7/0037 , G11B7/004 , G11B7/00745 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0943 , G11B7/0945 , G11B7/1356 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/043 , G11B17/0438 , G11B20/10009 , G11B20/1258 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , H02K41/0354 , H02K41/0356

3. 发明公开

EP1094451A3 Seek actuator for optical recording 失效
标题翻译：寻求光学记录执行器
公开(公告)号：EP1094451A3
公开(公告)日：2001-05-30
申请号：EP00121695.1
申请日：1996-03-19
申请人： Discovision Associates
发明人： Grassens, Leonardus Johannes , Getreuer, Kurt Walter
IPC分类号： G11B7/085 , G11B7/09
CPC分类号： G11B7/0037 , G11B7/004 , G11B7/00745 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0943 , G11B7/0945 , G11B7/1356 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/043 , G11B17/0438 , G11B20/10009 , G11B20/1258 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , H02K41/0354 , H02K41/0356
摘要： An assembly for controlling the position of a lens (122) in an optical data storage and retrieval drive includes a carriage that suspends a lens holder using a plurality of flexures (260,262). A lens is mounted in the lens holder such that the center of mass of the suspended lens holder lies on the optical axis of the lens, and also coincides with the center of mass of the lens. The lens holder is capable of relative motion with respect to the carriage (106) with at least one degree of freedom. The center of mass of the carriage lies within 0.1mm of the optical axis, proximate the center of mass of the lens holder. Suspensory forces acting on the lens holder are symmetric about the optical axis. A coarse magnetic drive moves the carriage in a tracking direction, and exerts forces on the carriage that are balanced and symmetric about the optical axis, so that moments about the center of mass of the carriage are effectively absent. Inertial forces acting on the carriage, and forces reactive to the magnetic drive forces are also balanced and symmetric with respect to the optical axis, and produce insubstantial moments about the center of mass of the carriage. There is a fine tracking and a focusing drive for the lens holder. Both of these drives produce balanced and symmetric forces about the optical axis, such that moments about the optical axis are absent. Inertial forces and reactive forces acting on the suspended lens holder are also symmetric about the optical axis. As a result the objective lens moves along its optical axis, and in its tracking direction without change in attitude, and its focal point can be precisely controlled with respect to the surface of a storage medium being read or written.
摘要翻译：一种用于控制光学数据存储和取回驱动器中的透镜（122）的位置的组件包括使用多个挠曲件（260,262）悬挂透镜保持器的托架。透镜安装在透镜架中，使得透镜架的质心位于透镜的光轴上，并且也与透镜的质心一致。透镜架能够以至少一个自由度相对于滑架（106）进行相对运动。滑架的质心位于光轴的0.1mm范围内，靠近镜头支架的质心。作用在透镜架上的悬置力是关于光轴对称的。粗磁驱动器使滑架沿跟踪方向移动，并且在滑架上施加力，使其平衡并且关于光轴对称，从而实际上不存在围绕滑架质心的力矩。作用在托架上的惯性力以及与磁力驱动力反应的力也是平衡的并且相对于光轴对称，并且围绕托架质量中心产生非实质性的力矩。镜头架有一个精确的跟踪和聚焦驱动。这两种驱动器均产生关于光轴的平衡且对称的力，使得围绕光轴的力矩不存在。作用在悬浮式透镜架上的惯性力和反作用力也关于光轴对称。结果，物镜沿着其光轴移动，并且在其跟踪方向上移动而不改变姿态，并且其焦点可以相对于被读取或写入的存储介质的表面精确地控制。

4. 发明公开

EP0829859A3 Optical disc system including focus capture assembly with focus error signal circuit and method for operating same 失效
标题翻译：与聚焦误差电路提供聚焦搜索装置全面用于光盘用于其操作的系统，方法和
公开(公告)号：EP0829859A3
公开(公告)日：1999-04-28
申请号：EP97118097.1
申请日：1996-01-18
申请人： DISCOVISION ASSOCIATES
发明人： Crupper, Randolph Scott , Davis, Marvin Benjamin , Getreuer, Kurt Walter , Grassens, Leonardus Johannes , Lewis, David Earl , Schell, David Louis
IPC分类号： G11B7/09 , G11B11/10
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： The optical drive system described comprises an optical assembly, a light source, an objective lens disposed in an objective lens subassembly, an actuator assembly which suspends the objective lens subassembly for relative motion thereof with respect to the actuator assembly, first and second servomotors for moving the objective lens subassembly in tracking and focusing directions, respectively, relative to the actuator assembly, a third servomotor for moving the actuator assembly in the tracking direction relative to a medium, first electronic means for controlling the first, second and third servomotors, a motor with a hub assembly for moving the medium relative to the objective lens subassembly, a photo detector, second electronic means responsive to an output signal of the photo detector for decoding information carried in the light returning from the medium, third electronic means for enabling the light source to emit light at a first intensity level to encode information on the medium and at a second intensity level to read information encoded thereon, data receiving means for accepting data that is storable on the medium, data encoding means being responsive to the data receiving means for representing the data to be stored in a predetermined format, the data encoding means also for directing data to the third electronic means, a magnetic field generator for producing a magnetic field on a portion of the medium and for coacting with the third electronic means and the light source to write and erase information on the medium, a cartridge loading assembly, servo error detecting means coupled to the first electronic means, and a housing structure for positioning components of the optical drive system with respect to another. Most of the systems claimed include means to monitor and use a Quad Sum signal associated with the return light for focus capture.

5. 发明公开

EP0829860A3 Focus capture method for optical disc system using detection of Quad Sum signal 失效
标题翻译：与检测用的Quad Sum信号的光盘系统的焦点搜索方法
公开(公告)号：EP0829860A3
公开(公告)日：1999-04-14
申请号：EP97118098.9
申请日：1996-01-18
申请人： DISCOVISION ASSOCIATES
发明人： Crupper, Randolph Scott , Davis, Marvin Benjamin , Getreuer, Kurt Walter , Grassens, Leonardus Johannes , Lewis, David Earl , Schell, David Louis
IPC分类号： G11B7/09 , G11B11/10
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： The optical drive system described comprises an optical assembly, a light source, an objective lens disposed in an objective lens subassembly, an actuator assembly which suspends the objective lens subassembly for relative motion thereof with respect to the actuator assembly, first and second servomotors for moving the objective lens subassembly in tracking and focusing directions, respectively, relative to the actuator assembly, a third servomotor for moving the actuator assembly in the tracking direction relative to a medium, first electronic means for controlling the first, second and third servomotors, a motor with a hub assembly for moving the medium relative to the objective lens subassembly, a photo detector for decoding information carried in the light returning from the medium, third electronic means for enabling the light source to emit light at a first intensity level to encode information on the medium and at a second intensity level to read information encoded thereon, data receiving means for accepting data that is storable on the medium, data encoding means being responsive to the data receiving means for representing the data to be stored in a predetermined format, the data encoding means also for directing data to the third electronic means, a magnetic field generator for producing a magnetic field on a portion of the medium and for coacting with the third electronic means and the light source to write and erase information on the medium, a cartridge loading assembly, servo error detecting means coupled to the first electronic means, and a housing structure for positioning components of the optical drive system with respect to one another. Most of the systems claimed include means to monitor and use a Quad Sum signal associated with the return light for focus capture.

6. 发明公开

EP0829859A2 Optical disc system including focus capture assembly with focus error signal circuit and method for operating same 失效
标题翻译：与聚焦误差电路提供聚焦搜索装置全面用于光盘用于其操作的系统，方法和
公开(公告)号：EP0829859A2
公开(公告)日：1998-03-18
申请号：EP97118097.1
申请日：1996-01-18
申请人： DISCOVISION ASSOCIATES
发明人： Crupper, Randolph Scott , Davis, Marvin Benjamin , Getreuer, Kurt Walter , Grassens, Leonardus Johannes , Lewis, David Earl , Schell, David Louis
IPC分类号： G11B7/09 , G11B11/10
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： The optical drive system described comprises an optical assembly, a light source, an objective lens disposed in an objective lens subassembly, an actuator assembly which suspends the objective lens subassembly for relative motion thereof with respect to the actuator assembly, first and second servomotors for moving the objective lens subassembly in tracking and focusing directions, respectively, relative to the actuator assembly, a third servomotor for moving the actuator assembly in the tracking direction relative to a medium, first electronic means for controlling the first, second and third servomotors, a motor with a hub assembly for moving the medium relative to the objective lens subassembly, a photo detector, second electronic means responsive to an output signal of the photo detector for decoding information carried in the light returning from the medium, third electronic means for enabling the light source to emit light at a first intensity level to encode information on the medium and at a second intensity level to read information encoded thereon, data receiving means for accepting data that is storable on the medium, data encoding means being responsive to the data receiving means for representing the data to be stored in a predetermined format, the data encoding means also for directing data to the third electronic means, a magnetic field generator for producing a magnetic field on a portion of the medium and for coacting with the third electronic means and the light source to write and erase information on the medium, a cartridge loading assembly, servo error detecting means coupled to the first electronic means, and a housing structure for positioning components of the optical drive system with respect to another.
Most of the systems claimed include means to monitor and use a Quad Sum signal associated with the return light for focus capture.

7. 发明公开

EP0840300A3 Optical disc system having improved circuitry for performing blank sector check on readable disc and method for operating same 失效
标题翻译：光盘系统具有改进的开关电路为可读光盘上的空扇区控制，和方法用于其操作
公开(公告)号：EP0840300A3
公开(公告)日：1999-04-28
申请号：EP97118095.5
申请日：1996-01-18
申请人： DISCOVISION ASSOCIATES
发明人： Crupper, Randolph Scott , Davis, Marvin Benjamin , Getreuer, Kurt Walter , Grassens, Leonardus Johannes , Lewis, David Earl , Schell, David Louis
IPC分类号： G11B7/09 , G11B19/04 , G11B11/10
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： An optical disc system including a focusing mechanism and a tracking mechanism, wherein the mechanisms are controlled by feedback loops having electronic circuits for generating a servo error signals. The error signals are communicated in the feedback loop for effecting corrections of the focusing mechanism and the tracking mechanism. The optical disc system is provided with digital lead/lag compensation circuit assembly including a servo loop having servo loop transfer function and an error signal. The circuit assembly includes a motor or actuator having a mechanical resonance frequency being less than a predetermined sampling frequency and a compensation circuit for stabilizing the servo loop. The error signal of the servo loop is sampled at the pre-determined sampling frequency. Normalization of the error signals to the information signal occurs during sampling. The compensation circuit has a compensation transfer function including a single lead and a complex lag for producing a notch filter with a notch. The compensation transfer function is formulated so that the notch occurs at approximately one half the predetermined sampling frequency thereby reducing amplitude of the mechanical resonance frequency in the servo loop transfer function. The optical disc system also includes a mechanical isolator for vibration isolation and accommodation of thermal expansion, an oscillator with a tank circuit having an increased resistance, an improved focus capture system, and means for identifying blank sectors in a storage medium.

8. 发明公开

EP0829858A3 Optical disc system having servo motor and servo error detection assembly operated relative to monitored Quad Sum signal 失效
标题翻译：光盘系统具有伺服电机和使用Quad Sum信号的伺服误差检测装置监视
公开(公告)号：EP0829858A3
公开(公告)日：1999-04-14
申请号：EP97118093.0
申请日：1996-01-18
申请人： DISCOVISION ASSOCIATES
发明人： Crupper, Randolph Scott , Davis, Marvin Benjamin , Getreuer, Kurt Walter , Grassens, Leonardus Johannes , Lewis, David Earl , Schell, David Louis
IPC分类号： G11B7/09 , G11B11/10
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： The optical drive system described comprises an optical assembly, a light source, an objective lens disposed in an objective lens subassembly, an actuator assembly which suspends the objective lens subassembly for relative motion thereof with respect to the actuator assembly, first and second servomotors for moving the objective lens subassembly in tracking and focusing directions, respectively, relative to the actuator assembly, a third servomotor for moving the actuator assembly in the tracking direction relative to a medium, first electronic means for controlling the first, second and third servomotors, a motor with a hub assembly for moving the medium relative to the objective lens subassembly, a photo detector, second electronic means responsive to an output signal of the photo detector for decoding information carried in the light returning from the medium, third electronic means for enabling the light source to emit light at a first intensity level to encode information on the medium and at a second intensity level to read information encoded thereon, data receiving means for accepting data that is storable on the medium, data encoding means being responsive to the data receiving means for representing the data to be stored in a predetermined format, the data encoding means also for directing data to the third electronic means, a magnetic field generator for producing a magnetic field on a portion of the medium and for coacting with the third electronic means and the light source to write and erase information on the medium, a cartridge leading assembly, servo error detecting means coupled to the first electronic means, and a housing structure for positioning components of the optical drive system with respect to one another. Most of the systems claimed include means to monitor and use a Quad Sum signal associated with the return light for focus capture.

9. 发明公开

EP0853313A2 Optical disc system 失效
标题翻译：系统选择打开
公开(公告)号：EP0853313A2
公开(公告)日：1998-07-15
申请号：EP98200192.7
申请日：1996-01-18
申请人： Discovision Associates
发明人： Crupper, Randolph Scott , Grassens, Leonardus Johannes , Davis, Marvin Benjamin , Lewis, David Earl , Getreuer, Kurt, Walter , Schell, David Louis
IPC分类号： G11B7/125
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： An optical disc system includes a laser driver for controlling an electrical current directed to a laser. The driver includes means for switching the drive voltage between a first voltage level and a second voltage level, so that electric power is only consumed when the laser is energized, thereby achieving enhanced rise and fall switching characteristics. The means for applying the drive voltage may include a CMOS buffer output.
摘要翻译：光盘系统包括用于控制指向激光器的电流的激光驱动器。驱动器包括用于在第一电压电平和第二电压电平之间切换驱动电压的装置，使得仅当激光器通电时才消耗电力，从而实现增强的上升和下降转换特性。用于施加驱动电压的装置可以包括CMOS缓冲器输出。

10. 发明公开

EP0852379A2 Method of changing rotational rate of storage medium from initial rate to desired rate 失效
标题翻译：一种用于从初始速度把存储介质的旋转速度到期望速度的方法
公开(公告)号：EP0852379A2
公开(公告)日：1998-07-08
申请号：EP98101056.4
申请日：1996-01-18
申请人： DISCOVISION ASSOCIATES
发明人： Crupper, Randolph Scott , Davis, Marvin Benjamin , Getreuer, Kurt Walter , Grassens, Leonardus Johannes , Lewis, David Earl , Schell, Davis Lewis
IPC分类号： G11B19/26
CPC分类号： G11B17/043 , G11B5/5526 , G11B7/0037 , G11B7/004 , G11B7/00456 , G11B7/00745 , G11B7/08511 , G11B7/08529 , G11B7/08582 , G11B7/09 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/093 , G11B7/0932 , G11B7/0933 , G11B7/0935 , G11B7/0941 , G11B7/0943 , G11B7/0945 , G11B7/126 , G11B7/1356 , G11B11/10504 , G11B11/10534 , G11B11/1055 , G11B11/10563 , G11B11/10576 , G11B11/10595 , G11B17/0438 , G11B20/10009 , G11B20/10037 , G11B20/10222 , G11B20/1258 , G11B20/14 , G11B21/10 , G11B21/106 , G11B2007/0919 , G11B2020/10916 , G11B2020/1281 , G11B2020/1484 , H02K41/0354 , H02K41/0356
摘要： A method is described of changing the rotational rate of a storage medium from an initial rotation rate to a desired rotational rate having an intermediate limit, a lower acceptable limit and an upper acceptable limit. The method involves the steps of applying a force to the storage medium, generating a first signal when the rotation rate exceeds the intermediate limit, and generating a second signal when the rotational rate exceeds the lower acceptable limit. The application of the force is then terminated. The upper and lower acceptable limits define the operational range for the spindle speed, and may be on the order of 1% apart.

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