公开(公告)号：US4371899A

公开(公告)日：1983-02-01

申请号：US130903

申请日：1980-03-17

申请人： Ludwig Ceshkovsky ,  Wayne R. Dakin

发明人： Ludwig Ceshkovsky ,  Wayne R. Dakin

IPC分类号： G11B7/08 ,  G11B7/09 ,  G11B21/10 ,  H04N5/76 ,  G11B7/00

CPC分类号： G11B7/08 ,  G11B21/10 ,  G11B7/0941 ,  G11B7/0908

摘要： A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track. FM processing means are described for reconstructing the recovered frequency modulated video information such that the ratio between the amplitude of the signals as recorded is essentially the same in the signals as recovered from the video disc member. Further servo means are described for handling the selective change of the intersection of the reading beam with the video disc member in a predetermined preferred mode of operation.

摘要翻译： 描述了与视频盘一起使用的视频盘播放器，该视频盘具有以多个同心圆或单个螺旋形式记录在其上的调频视频信息。 信息轨道包括连续定位的光反射和光非反射区域。 导致聚焦的光束被定位在信息轨道的中心上方，并且从信息轨道反射的光被物镜聚集，以应用于用于恢复记录的调频视频信号的电子电路。 描述了径向跟踪装置，用于保持聚焦的光点撞击信息轨道的中心。 描述了用于将物镜定位在信息轨道上方的最佳聚焦位置处的透镜聚焦装置，用于从信息轨道收集最大量的反射光。 描述FM处理装置，用于重建恢复的调频视频信息，使得所记录的信号的幅度之间的比例在从视频盘成员恢复的信号中基本相同。 描述了另外的伺服装置，用于处理在预定的优选操作模式中选择性地改变读取光束与视频盘部件的交点。

公开(公告)号：US06744711B1

公开(公告)日：2004-06-01

申请号：US09597941

申请日：2000-06-20

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

IPC分类号： G11B700

CPC分类号： G11B7/08541

摘要： An apparatus and method conducts a high-speed search on an optical medium having a plurality of tracks on which information is recorded. At least a first light spot and a second light spot are directed by the apparatus onto the optical medium. The light spots traverse across the tracks in one of a first direction and a second direction. A photodetector unit receives a reflected component of the first light spot to form a first electrical signal and a reflected component of the second light spot to form a second electrical signal. Digital shaping circuitry respectively converts the first electrical signal and the second electrical signal into a first digital signal and a second digital signal. A quadrature detector is configured to receive the first digital signal and the second digital signal. The first digital signal and the second digital signal are arranged in a quadrature relationship to each other. The quadrature detector produces from the first digital signal and the second digital signal an up-count signal indicating that the light spots are traversing the tracks in the first direction and a down-count signal indicating that the light spots are traversing the tracks in the second direction. A counter counts, during the search, the up-count signal and the down-count signal to determine a number of tracks traversed by the light spots.

摘要翻译： 一种装置和方法在具有记录有信息的多个轨道的光学介质上进行高速搜索。 至少第一光点和第二光点被设备引导到光学介质上。 光点在第一方向和第二方向中的一个方向上穿过轨迹。 光检测器单元接收第一光点的反射分量以形成第一电信号和第二光点的反射分量以形成第二电信号。 数字整形电路分别将第一电信号和第二电信号转换为第一数字信号和第二数字信号。 正交检测器被配置为接收第一数字信号和第二数字信号。 第一数字信号和第二数字信号彼此成正交关系。 正交检测器从第一数字信号和第二数字信号产生指示光点在第一方向上遍历轨道的递增计数信号，以及指示光点在第二方向上遍历轨道的递减计数信号 方向。 在搜索期间，计数器计数向上计数信号和向下计数信号以确定由光点穿过的轨道的数量。

公开(公告)号：US5703847A

公开(公告)日：1997-12-30

申请号：US474424

申请日：1995-06-07

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

摘要： The present invention allows the light beam of an optical disc storage device to radially move between different information tracks of an optical disc while the storage device tracking servo loop remains in a continuous closed loop mode of operation. The invention operates to radially move a light beam from one information track to another during a closed loop mode of operation by activating two control signals introduced into the closed tracking servo loop to create a phantom track center that radially moves across the optical disc. Because the tracking servo loop is in a closed loop mode of operation, the tracking servo operates to keep the light beam centered on the point that the tracking servo considers to be the center of an information track; in this case the phantom track center. Therefore, the tracking servo causes the light beam to radially move across the disc in a closed loop mode of operation by keeping the light beam centered on the moving phantom track center.

公开(公告)号：US5590102A

公开(公告)日：1996-12-31

申请号：US371350

申请日：1995-01-12

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/085 ,  G11B7/09 ,  G11B7/12 ,  G11B21/10 ,  G11B7/095

CPC分类号： G11B7/12 ,  G11B7/0045 ,  G11B7/08588

摘要： An apparatus for controlling the spacing between information tracks while recording information on an optical disc that does not have pre-manufactured information tracks. The invention employs a precision reference scale to guide the position of information tracks recorded on an optical disc. The reference scale is a linear strip with spaced optical tick marks. The spacing of the optical tick marks on the reference scale directly correlates to track pitch between information tracks recorded on the optical disc. The invention utilizes a first optical system for reading-from and writing-to an optical disc. A second optical system is used for detecting optical tick marks on the reference scale. The first optical system and the second optical system share common optical components. Optical components in common to both the first and second optical systems include a light source, a diffraction grating, a field lens, and a beam splitter. Components unique to each optical system includes an objective lens and a field lens for the first optical system and a beam splitter, objective lens and field lens for the second optical system. The first optical system operates in direct correlation with the second optical system during the recording process.

摘要翻译： 一种用于在不具有预制信息轨道的光盘上记录信息的同时控制信息轨迹之间的间隔的装置。 本发明采用精密基准刻度来引导记录在光盘上的信息轨迹的位置。 参考刻度是具有间隔光学刻度线的线性条。 基准刻度上的光刻痕的间距与记录在光盘上的信息轨迹之间的轨道间距直接相关。 本发明利用第一光学系统来读取和写入光盘。 第二光学系统用于检测基准刻度上的光刻痕。 第一光学系统和第二光学系统共享共同的光学部件。 第一和第二光学系统共同的光学部件包括光源，衍射光栅，场透镜和分束器。 每个光学系统独有的部件包括用于第一光学系统的物镜和场透镜，以及用于第二光学系统的分束器，物镜和场透镜。 第一光学系统在记录过程中与第二光学系统直接相关。

公开(公告)号：US5583841A

公开(公告)日：1996-12-10

申请号：US375461

申请日：1995-01-17

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

IPC分类号： G11B7/085 ,  G11B19/20 ,  G11B19/24 ,  G11B7/00

CPC分类号： G11B19/20 ,  G11B19/24 ,  G11B7/08505

摘要： In a data reproducing apparatus, an optical pick-up is radially movable with respect to, and recovers information from, an information storage member. A motor rotates an information storage member. A spindle servo controls the speed of rotation of the motor in response to a timing signal, to provide constant linear velocity between the information storage member and the optical pick-up. A signal processor creates a recovered timing signal from the information recovered by the optical pick-up, and passes the recovered timing signal to a switching circuit. During normal playback, the switching circuit passes the recovered timing signal to the spindle servo as the timing signal. During search, a controller directs an oscillator to output a reference timing signal to the switching circuit. A controller directs the switching circuit to pass the reference timing signal to the spindle servo as the timing signal while the optical pick-up is moving radially with respect to the information storage member. When the optical pick-up reaches or nears the target track on the information storage member, the controller directs the switching circuit to again pass the recovered timing signal to the spindle servo.

摘要翻译： 在数据再现装置中，光学拾取器相对于信息存储构件可以径向移动并且从信息存储构件恢复信息。 电机旋转信息存储部件。 主轴伺服机构响应于定时信号控制电动机的转速，以便在信息存储部件和光学拾取器之间提供恒定的线速度。 信号处理器从由光拾取器恢复的信息中产生恢复的定时信号，并将恢复的定时信号传递给切换电路。 在正常重放期间，开关电路将恢复的定时信号作为定时信号传送到主轴伺服。 在搜索期间，控制器指示振荡器向开关电路输出参考定时信号。 当光学拾取器相对于信息存储构件径向移动时，控制器引导切换电路将参考定时信号作为定时信号传递到主轴伺服。 当光学拾取器到达或靠近信息存储部件上的目标轨道时，控制器引导切换电路再次将恢复的定时信号传递到主轴伺服。

公开(公告)号：US4488275A

公开(公告)日：1984-12-11

申请号：US454521

申请日：1982-12-30

申请人： Ludwig Ceshkovsky ,  Wayne R. Dakin

发明人： Ludwig Ceshkovsky ,  Wayne R. Dakin

IPC分类号： G11B7/09 ,  G11B21/10

CPC分类号： G11B21/10 ,  G11B7/09 ,  G11B7/0941 ,  G11B7/0908

摘要： A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track. FM processing means are described for reconstructing the recovered frequency modulated video information such that the ratio between the amplitude of the signals as recorded is essentially the same in the signals as recovered from the video disc member. Further servo means are described for handling the selective change of the intersection of the reading beam with the video disc member in a predetermined preferred mode of operation.

摘要翻译： 描述了与视频盘一起使用的视频盘播放器，该视频盘具有以多个同心圆或单个螺旋形式记录在其上的调频视频信息。 信息轨道包括连续定位的光反射和光非反射区域。 导致聚焦的光束被定位在信息轨道的中心上方，并且从信息轨道反射的光被物镜聚集，以应用于用于恢复记录的调频视频信号的电子电路。 描述了径向跟踪装置，用于保持聚焦的光点撞击信息轨道的中心。 描述了用于将物镜定位在信息轨道上方的最佳聚焦位置处的透镜聚焦装置，用于从信息轨道收集最大量的反射光。 描述FM处理装置，用于重建恢复的调频视频信息，使得所记录的信号的幅度之间的比例在从视频盘成员恢复的信号中基本相同。 描述了另外的伺服装置，用于处理在预定的优选操作模式中选择性地改变读取光束与视频盘部件的交点。

公开(公告)号：US4439848A

公开(公告)日：1984-03-27

申请号：US298405

申请日：1981-09-01

申请人： Ludwig Ceshkovsky ,  Wayne R. Dakin

发明人： Ludwig Ceshkovsky ,  Wayne R. Dakin

IPC分类号： G11B7/09 ,  G11B21/10 ,  G11B7/12

CPC分类号： G11B7/09 ,  G11B21/10 ,  G11B7/0941 ,  G11B7/0908

摘要： A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track. FM processing means are described for reconstructing the recovered frequency modulated video information such that the ratio between the amplitude of the signals as recorded is essentially the same in the signals as recovered from the video disc member. Further servo means are described for handling the selective change of the intersection of the reading beam with the video disc member in a predetermined preferred mode of operation.

摘要翻译： 描述了与视频盘一起使用的视频盘播放器，该视频盘具有以多个同心圆或单个螺旋形式记录在其上的调频视频信息。 信息轨道包括连续定位的光反射和光非反射区域。 导致聚焦的光束被定位在信息轨道的中心上方，并且从信息轨道反射的光被物镜聚集，以应用于用于恢复记录的调频视频信号的电子电路。 描述了径向跟踪装置，用于保持聚焦的光点撞击信息轨道的中心。 描述了用于将物镜定位在信息轨道上方的最佳聚焦位置处的透镜聚焦装置，用于从信息轨道收集最大量的反射光。 描述FM处理装置，用于重建恢复的调频视频信息，使得所记录的信号的幅度之间的比例在从视频盘成员恢复的信号中基本相同。 描述了另外的伺服装置，用于处理在预定的优选操作模式中选择性地改变读取光束与视频盘部件的交点。

公开(公告)号：US4358796A

公开(公告)日：1982-11-09

申请号：US130901

申请日：1980-03-17

申请人： Ludwig Ceshkovsky ,  Wayne R. Dakin

发明人： Ludwig Ceshkovsky ,  Wayne R. Dakin

IPC分类号： G11B7/0037 ,  G11B7/09 ,  G11B21/10 ,  H04N5/93 ,  H04N5/76 ,  G11B17/00

CPC分类号： H04N5/93 ,  G11B21/10 ,  G11B7/0037 ,  G11B7/0941 ,  G11B7/0908

摘要： A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The information track comprises successively positioned light reflective and light non-reflective regions. A focused light beam is caused to be positioned over the center of an information track and the light reflected from the information track is gathered by an objective lens for application to electronic circuitry for recovering the recorded frequency modulated video signals. Radial tracking means are described for maintaining the focused light spot to impinge upon the center of an information track. Lens focusing means are described for positioning the objective lens at the optimum focused position above the information track for gathering the maximum amount of reflected light from the information track. FM processing means are described for reconstructing the recovered frequency modulated video information such that the ratio between the amplitude of the signals as recorded is essentially the same in the signals as recovered from the video disc member. Further servo means are described for handling the selective change of the intersection of the reading beam with the video disc member in a predetermined preferred mode of operation.

摘要翻译： 描述了与视频盘一起使用的视频盘播放器，该视频盘具有以多个同心圆或单个螺旋形式记录在其上的调频视频信息。 信息轨道包括连续定位的光反射和光非反射区域。 导致聚焦的光束被定位在信息轨道的中心上方，并且从信息轨道反射的光被物镜聚集，以应用于用于恢复记录的调频视频信号的电子电路。 描述了径向跟踪装置，用于保持聚焦的光点撞击信息轨道的中心。 描述了用于将物镜定位在信息轨道上方的最佳聚焦位置处的透镜聚焦装置，用于从信息轨道收集最大量的反射光。 描述FM处理装置，用于重建恢复的调频视频信息，使得所记录的信号的幅度之间的比例在从视频盘成员恢复的信号中基本相同。 描述了另外的伺服装置，用于处理在预定的优选操作模式中选择性地改变读取光束与视频盘部件的交点。

公开(公告)号：US4228326A

公开(公告)日：1980-10-14

申请号：US961405

申请日：1978-11-16

申请人： Wayne R. Dakin ,  Ludwig Ceshkovsky

发明人： Wayne R. Dakin ,  Ludwig Ceshkovsky

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B19/24 ,  G11B19/28 ,  G11B21/04

CPC分类号： G11B19/24

摘要： Method and apparatus for controllably rotating an information storage disc relative to a radially movable optical transducer, whereby information is recorded on the disc in a series of substantially circular and concentrically arranged information tracks. The angular velocity of the disc and the radial velocity of the transducer are controllably adjusted to be inversely proportional to the radius of the particular information track being recorded, whereby the track is moved at a constant linear velocity relative to the transducer and the successive tracks are equally spaced with respect to each other, and whereby a uniform information recording density over the surface of the disc is achieved.

摘要翻译： 用于相对于可径向移动的光学换能器可控地旋转信息存储盘的方法和装置，由此将信息以一系列基本圆形且同心布置的信息轨迹记录在盘上。 盘的角速度和传感器的径向速度被可控地调节成与被记录的特定信息轨迹的半径成反比，由此轨道相对于换能器以恒定的线速度移动，并且连续的轨迹是 相互间隔相等，从而实现盘表面上均匀的信息记录密度。

公开(公告)号：US4223349A

公开(公告)日：1980-09-16

申请号：US961404

申请日：1978-11-16

申请人： Wayne R. Dakin ,  Ludwig Ceshkovsky

发明人： Wayne R. Dakin ,  Ludwig Ceshkovsky

IPC分类号： G11B5/09 ,  G11B19/24 ,  G11B19/28

CPC分类号： G11B19/24

摘要： Method and apparatus for recovering information at a substantially constant rate from a rotatable information storage disc. The information is stored on the disc in a plurality of substantially circular and concentrically arranged information tracks, with a substantially uniform recording density, and it is recovered by controllably rotating the disc, relative to a transducer, at an angular velocity substantially inversely proportional to the radius of the corresponding track. The apparatus includes a coarse speed control potentiometer for producing a measure of the radius of the particular information track from which information is being recovered, and fine speed control means for comparing the relative phase angles of a periodic signal in the recovered information and a periodic reference signal and for producing a fine speed control signal proportional to the phase difference. The measure of radius and the fine speed control signal are summed together and coupled to a voltage-controlled oscillator to produce a composite speed control signal, which is coupled to a servo to rotate the disc at a corresponding angular velocity.

摘要翻译： 用于从可旋转的信息存储盘以基本恒定的速率恢复信息的方法和装置。 信息以多个基本圆形且同心布置的信息轨道存储在盘上，具有基本均匀的记录密度，并且通过以相对于换能器大致成反比的角速度可控地旋转盘来恢复信息 相应轨道的半径。 该装置包括用于产生信息正在被恢复的特定信息轨道的半径的量度的粗速控制电位计，以及用于比较恢复信息中的周期信号的相对相位角和周期性参考的精细速度控制装置 信号并产生与相位差成比例的精细速度控制信号。 将半径测量和精细速度控制信号相加在一起，并耦合到压控振荡器以产生复合速度控制信号，该信号耦合到伺服机构以相应的角速度旋转光盘。