公开(公告)号：US4609954A

公开(公告)日：1986-09-02

申请号：US585702

申请日：1984-03-02

申请人： Richard H. Bolton ,  Robert P. Cloutier

发明人： Richard H. Bolton ,  Robert P. Cloutier

IPC分类号： G11B5/55 ,  G11B21/08

CPC分类号： G11B5/5556 ,  G11B21/085

摘要： A tracking servo for a disk player controls the movement of a playback head between prerecorded magnetic tracks carried by a magnetic disk. A feedback signal is provided from a timing wheel attached to a cam and gear configuration that connects a dc servomotor to the head. The servo separates the track-to-track movement into two components: one component occurring while the dc motor is energized and another occurring while the dc motor is coasting to a stop, presumably opposite the desired track. The first component of movement continues until the feedback signal corresponds to an intermediate value, which is predetermined for the first movement. At this point the dc motor is turned off but the timing wheel continues to increment the feedback signal as the motor coasts. Should the head be misaligned with respect to the track after the dc motor stops, the final value of the feedback signal is used to modify the intermediate value for the next track-to-track movement. In this way irregularities due to coasting will not accumulate and affect future track-to-track movement.

摘要翻译： 用于盘播放机的跟踪伺服器控制重放头在由磁盘携带的预先记录的磁迹之间的移动。 反馈信号从连接到直流伺服电机与头部的凸轮和齿轮配置的定时轮提供。 伺服将轨道到轨道的运动分为两个部件：一个部件在直流电机通电时发生，另一个部件在直流电机惯性停止时发生，大概与所需磁道相对。 运动的第一分量继续，直到反馈信号对应于为第一运动预定的中间值。 此时，直流电机关闭，但随着电机惯性滑行，定时轮继续增加反馈信号。 在直流电动机停止之后，如果磁头相对于轨道不对准，则反馈信号的最终值用于修改下一轨道到轨道运动的中间值。 以这种方式，由于滑行而导致的不规则性不会累积并影响未来的轨道到轨道运动。

公开(公告)号：US6147779A

公开(公告)日：2000-11-14

申请号：US7004

申请日：1998-01-14

申请人： Richard H. Bolton ,  Luther E. Chaplain, III ,  Wayne R. Cichetti

发明人： Richard H. Bolton ,  Luther E. Chaplain, III ,  Wayne R. Cichetti

IPC分类号： H04N5/257 ,  G03B27/46 ,  G11B15/28 ,  H04N1/00 ,  H04N1/04 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N3/38 ,  H04N9/11

CPC分类号： H04N1/0473 ,  H04N3/38 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/0408 ,  H04N2201/041 ,  H04N2201/0471 ,  H04N2201/04756 ,  H04N9/11

摘要： A method and apparatus for providing localized control of film, allowing high speed and high resolution continuous digital scanning of the film. The method includes continuously and precisely transporting the film, capturing successive slit images, and storing the images. The apparatus includes the use of a drive system to control the transport of the media being scanned. In a preferred embodiment, a dual capstan drive system under the control of a single motor provides localized tension and location control for the continuous transport of the film to be scanned, the capstans comprising a metal shaft. The preferred embodiment further comprises pinch rollers immediately adjacent to the capstans, the pinch rollers comprising a metal shaft covered with an elastomeric material. As a result of the accurate localized control of the film, high speed scanning is possible.

摘要翻译： 一种用于提供胶片的局部控制的方法和装置，允许胶片的高速和高分辨率的连续数字扫描。 该方法包括连续且精确地输送胶片，捕获连续的狭缝图像和存储图像。 该装置包括使用驱动系统来控制被扫描的介质的传送。 在优选实施例中，在单个电动机的控制下的双绞盘驱动系统提供局部张力和位置控制，用于连续输送待扫描的膜，所述绞盘包括金属轴。 优选实施例还包括紧邻绞盘的夹送辊，夹送辊包括用弹性体材料覆盖的金属轴。 作为薄膜的精确局部控制的结果，可以进行高速扫描。

公开(公告)号：US4739411A

公开(公告)日：1988-04-19

申请号：US940317

申请日：1986-12-10

申请人： Richard H. Bolton

发明人： Richard H. Bolton

IPC分类号： H04N5/232

CPC分类号： H04N5/23212

摘要： A manually-focused video camera provides a movie image for an electronic viewfinder and a still image for recording apparatus. A diaphragm in the optical section of the camera determines the optical aperture presented to incoming image light, which coincidentally establishes the depth of field in which the subject remains in focus. When the aperture necessary for a still image exceeds the aperture used for the movie image by, e.g., three aperture stops, a warning system in the camera produces a control signal. The existence of this signal indicates a potential focusing problem due to the disparity between aperture values and the reduced depth of field in the corresponding still image. The signal is used, e.g., to illuminate a warning element in the viewfinder or to insert a neutral density filter into the path of incoming light, in the latter case forcing the movie aperture to approach the still aperture and thereby causing the movie depth of field to approach the still depth of field.

摘要翻译： 手动对焦摄像机提供用于电子取景器的电影图像和用于记录装置的静止图像。 照相机的光学部分中的光阑确定呈现入射图像光的光学孔径，其巧妙地建立被摄体保持对焦的景深。 当静止图像所需的孔径例如超过用于电影图像的孔径时，例如三个孔径光阑，相机中的警告系统产生控制信号。 该信号的存在表示由于孔径值之间的差异和相应静止图像中的减小的景深而引起的潜在的聚焦问题。 该信号用于例如照亮取景器中的警告元件或将中性浓度滤光片插入到入射光的路径中，在后一种情况下，迫使电影孔径接近静止孔径，从而导致电影景深 接近静止的景深。

公开(公告)号：US4717968A

公开(公告)日：1988-01-05

申请号：US776239

申请日：1985-09-16

申请人： Richard C. Painton ,  Jay D. Marchetti ,  John J. Acello ,  John J. Bradley ,  Richard H. Bolton

发明人： Richard C. Painton ,  Jay D. Marchetti ,  John J. Acello ,  John J. Bradley ,  Richard H. Bolton

IPC分类号： G11B19/00 ,  G11B19/04 ,  G11B19/06 ,  G11B19/20 ,  H04N5/781

CPC分类号： G11B19/20 ,  G11B19/04 ,  G11B19/06

摘要： A video player includes a playback head that repeatedly passes in contact with a circular track on a flexible magnetic disk in order to reproduce a still picture on a video display. By cycling the player into a special quiescent state after a certain interval elapses without user instructions, excessive disk wear is avoided. While in the quiescent state, the disk drive motor is stopped--immobilizing the disk-to-head interface--and the video display is blanked. If user instructions are received while in this state, the disk drive motor is reenergized and the video display is resumed, showing the still picture displayed prior to interruption. If no user instructions are received during a further interval, the player is shut off.

摘要翻译： 视频播放器包括在柔性磁盘上重复通过与圆形轨道接触的重放头，以便在视频显示器上再现静止图像。 通过在没有用户指令的情况下经过一定间隔后，将播放器循环到特殊的静止状态，避免了过多的磁盘磨损。 当处于静止状态时，磁盘驱动器电机停止 - 固定磁盘到磁头的接口 - 视频显示屏被消隐。 如果在这种状态下接收到用户指令，则磁盘驱动电动机被重新通电并恢复视频显示，显示在中断之前显示的静止图像。 如果在进一步的间隔期间没有接收到用户指令，则播放器被关闭。