公开(公告)号：US07936659B2

公开(公告)日：2011-05-03

申请号：US10190382

申请日：2002-07-03

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

IPC分类号： G11B7/00

CPC分类号： G11B7/09 ,  G11B7/005

摘要： The present invention uses a stationary medium and a stationary optical pickup unit. The stationary optical pickup unit has a laser, which sends a beam of light through an objective lens, which focuses the beam on a point on the track of the stationary medium. The beam is then reflected toward a re-directing surface (e.g., prism) which diverts it to a photodiode array. Instead of the entire optical pickup moving to follow the track as in conventional systems, only the objective lens inside of the optical pickup moves. The position of the objective lens determines where on the information track the laser will reach. Depending upon where the laser beam reaches, the reflected light beam received by the photodetector array changes. This, in turn, affects the amount of light sensed by each photodetector in the array, thereby causing the output of each of the four photodetectors to change each time the objective lens moves. To implement the invention, the output of the photodetector array is manipulated wherein the manipulated signal corresponds to the signal that would be received if the photodetector were actually following the track directly above the laser as in prior art systems. In this manner, a signal can be used in a tracking servo that corresponds to movement within a conventional media player when actually the pickup and the medium are stationary.

摘要翻译： 本发明使用固定介质和静止​​光学拾取单元。 固定光学拾取单元具有激光器，该激光器通过物镜发送光束，该物镜将光束聚焦在固定介质的轨道上的点上。 光束然后被反射到朝向光电二极管阵列转移的再指导表面（例如，棱镜）。 代替像传统系统一样移动跟随轨道的整个光学拾取器，只有光学拾取器内部的物镜移动。 物镜的位置决定了激光将到达的信息轨道。 取决于激光束到达的地方，由光电检测器阵列接收的反射光束改变。 这反过来影响阵列中每个光电检测器感测到的光量，从而使得每次四个光电探测器的输出在每次物镜移动时都改变。 为了实现本发明，操纵光电检测器阵列的输出，其中如现有技术的系统中光电检测器实际上跟踪直接在激光上方的轨道，则操纵信号对应于将被接收的信号。 以这种方式，当实际上拾取器和介质是静止的时，信号可以用于对应于常规媒体播放器内的移动的跟踪伺服中。

公开(公告)号：USRE32431E

公开(公告)日：1987-06-02

申请号：US732033

申请日：1985-05-08

申请人： Wayne R. Dakin ,  Ludwig Ceshkovsky

发明人： Wayne R. Dakin ,  Ludwig Ceshkovsky

IPC分类号： G11B19/24

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.

公开(公告)号：US4332022A

公开(公告)日：1982-05-25

申请号：US130904

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 ,  G11B7/08 ,  G11B7/09 ,  G11B21/10

CPC分类号： G11B21/10 ,  G11B7/0037 ,  G11B7/08 ,  G11B7/081 ,  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：US06982935B2

公开(公告)日：2006-01-03

申请号：US09683684

申请日：2002-02-01

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

IPC分类号： G11B7/085

CPC分类号： G11B7/08517 ,  G11B19/02

摘要： A method and apparatus for suspending the operation of a rotating optical media player that uses simplified and efficient logic circuitry is described. When an operator initiates a pause operation, for example, by pressing a pause key, the current location of an optical pickup (e.g., a value of the current track ID) is stored. Then, a tracking servo loop is opened and a near zero offset is provided to the input of the tracking actuator. The condition of the optical disk system is then maintained in a “wait” state until the operator decides to end the pause process by selecting an alternate operation, such as “Play”, “Search”, or some other functions. When an alternate operation is received, the tracking servo loop is closed. The system then enters a search mode to reposition the optical head to the position indicated by the track ID, which was previously saved. Finally, the selected function command is activated. In an alternate embodiment, in the case where “Search” is selected during “Pause”, the stored location is ignored, the search instead being directed to the desired location associated with the search.

公开(公告)号：USRE32709E

公开(公告)日：1988-07-05

申请号：US752437

申请日：1985-07-08

申请人： Ludwig Ceshkovsky ,  Wayne R. Dakin

发明人： Ludwig Ceshkovsky ,  Wayne R. Dakin

IPC分类号： G11B7/09 ,  G11B19/02 ,  G11B19/28 ,  G11B21/10 ,  H04N5/93

CPC分类号： G11B21/10 ,  G11B19/02 ,  G11B19/28 ,  G11B7/09 ,  G11B7/0941 ,  H04N5/93 ,  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.

公开(公告)号：USRE32051E

公开(公告)日：1985-12-17

申请号：US619259

申请日：1984-06-11

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

CPC分类号： G11B7/0941 ,  G11B21/10 ,  G11B7/08 ,  G11B7/081 ,  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.

公开(公告)号：US4375091A

公开(公告)日：1983-02-22

申请号：US295629

申请日：1981-08-24

申请人： Wayne R. Dakin ,  Ludwig Ceshkovsky

发明人： Wayne R. Dakin ,  Ludwig Ceshkovsky

IPC分类号： G11B7/085 ,  G11B17/00 ,  G11B17/34 ,  G11B27/10 ,  G11B27/30 ,  G11B7/00

CPC分类号： G11B7/08517 ,  G11B17/005 ,  G11B17/34 ,  G11B27/105 ,  G11B27/3054 ,  G11B7/08529 ,  G11B2220/20 ,  G11B2220/2587 ,  G11B7/08541

摘要： A method and apparatus for selectably retrieving information from any of a plurality of spirally-formed information tracks formed in a video disc by means of controlling a carriage for translating the video disc in a forward or a reverse direction relative to radiant beam information recovery means in a video disc player. Each information track is identified by a unique address and means are provided for selecting the address of a particular track to be retrieved. A prescribed sequence of drive signals is applied to a carriage motor dependent on the distance to be traveled by the carriage to retrieve the selected information, the drive signals being successively stepped downward to intermittently redetermine carriage motor speed as predetermined location thresholds are reached during carriage translation.

公开(公告)号：US07038979B2

公开(公告)日：2006-05-02

申请号：US10708963

申请日：2004-04-02

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

IPC分类号： G11B7/00

CPC分类号： G11B7/08541

摘要： An apparatus and method for high-speed searching of an optical medium having a plurality of tracks. Light spots are directed by the apparatus onto the optical medium. As the spots traverse across the tracks in one of a first direction and a second direction, a photodetector unit receives reflected components of the light spots, thus forming respective electrical signals. Digital shaping circuitry converts the electrical signals into digital signals. A quadrature detector receives the digital signals which are arranged in quadrature relationship to each other, and produces an up-count signal indicating the light spots are traversing the tracks in the first direction and a down-count signal indicating the light spots are traversing the tracks in the second direction. A counter counts the up-count signal and the down-count signal to determine a number of tracks traversed by the light spots.

摘要翻译： 一种用于高速搜索具有多个轨道的光学介质的装置和方法。 光点由设备引导到光学介质上。 当光点在第一方向和第二方向中的一个方向上穿过轨道时，光电检测器单元接收光点的反射分量，从而形成相应的电信号。 数字整形电路将电信号转换为数字信号。 正交检测器接收以正交关系彼此排列的数字信号，并产生指示光点在第一方向上穿过轨道的向上计数信号，以及指示光点的递减计数信号正在穿过轨道 在第二个方向。 计数器对递增计数信号和递减计数信号进行计数以确定由光点穿过的轨道的数量。

公开(公告)号：US5689485A

公开(公告)日：1997-11-18

申请号：US625273

申请日：1996-04-01

申请人： Ludwig Ceshkovsky

发明人： Ludwig Ceshkovsky

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/13 ,  G11B7/095

CPC分类号： G11B7/133 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0908 ,  G11B7/0946 ,  G11B7/0948 ,  G11B7/08505

摘要： An apparatus is disclosed for control of a beam of radiant energy, wherein a detector of the beam has first and second outputs responsive to a position of the beam. A circuit is coupled to the outputs of the detector for producing an error signal representing a displacement of the beam from a predetermined position, wherein the error signal has a periodic characteristic relative to the displacement. A servo responsive to the error signal restores the displaced beam to the predetermined position. A local feedback loop is coupled to the outputs of the detector, and includes first and second periodic function generators, each responsive to the error signal. The second periodic function generator has an output that differs from an output of the first periodic function generator by a phase angle, preferably 90 degrees. A first multiplier multiplies the first output of the detector by the output of the first periodic function generator. A second multiplier multiplies the second output of the detector by the output of the second periodic function generator, wherein the outputs of the first and second multipliers are provided as inputs of the circuit to modify the error signal.

摘要翻译： 公开了一种用于控制辐射能量束的装置，其中光束的检测器具有响应于光束位置的第一和第二输出。 电路耦合到检测器的输出，用于产生表示来自预定位置的光束位移的误差信号，其中误差信号相对于位移具有周期性特性。 响应于误差信号的伺服器将移位的光束恢复到预定位置。 局部反馈回路耦合到检测器的输出，并且包括响应于误差信号的第一和第二周期函数发生器。 第二周期函数发生器具有与第一周期函数发生器的输出不同的相位角，优选为90度的输出。 第一乘法器将检测器的第一输出乘以第一周期函数发生器的输出。 第二乘法器将检测器的第二输出乘以第二周期函数发生器的输出，其中第一和第二乘法器的输出被提供作为电路的输入以修改误差信号。

公开(公告)号：US4477890A

公开(公告)日：1984-10-16

申请号：US353740

申请日：1982-03-01

申请人： Donald G. Mooney ,  Ludwig Ceshkovsky

发明人： Donald G. Mooney ,  Ludwig Ceshkovsky

IPC分类号： G11B7/26 ,  G01B11/30 ,  G01N21/88 ,  G01N21/95 ,  G11B7/0037 ,  H04N5/76 ,  G01N21/32 ,  G11B27/36

CPC分类号： G11B7/00375 ,  G01N21/9506

摘要： Apparatus for generating a map of detectable characteristics of a disc. A scanning signal display device has a detector coupled to the intensity input thereof. The detector detects the characteristics at a location on the disc which is scanned in a spiral pattern and provides a signal representative of the detected characteristics to the display device. A signal is generated and provided to the drive inputs of the display device to cause the trace of the device to follow a spiral pattern corresponding to the scan pattern of the predetermined location.

摘要翻译： 用于产生盘的可检测特征的映射的装置。 扫描信号显示装置具有耦合到其强度输入的检测器。 检测器检测盘上以螺旋图案扫描的位置处的特性，并向显示装置提供表示检测到的特征的信号。 生成信号并将其提供给显示装置的驱动输入，以使装置的轨迹跟随与预定位置的扫描图案对应的螺旋图案。