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公开(公告)号：US5070493A
公开(公告)日：1991-12-03
申请号：US355738
申请日：1989-05-22
IPC分类号： G11B11/10 , G11B7/135 , G11B7/22 , G11B11/105
CPC分类号： G11B7/1356
摘要： An optical assembly incorporating a wedge-shaped optically transparent prism, a 45 degree right isosceles triangular prism which has two thin film coated surfaces, a rhomboidal prism attached to the triangular prism, a second, smaller 45 degree right isosceles triangular prism attached to one end face of the rhomboidal prism and two planoconvex lenses attached to the combination of the rhomboidal and second triangular prisms is mounted within a housing. All of the optical components are cemented to the adjacent component utilizing a transparent optical cement to form an integral unit. Data and servo detector assemblies and a diode laser light source are mounted on the external surfaces of the housing to form a stationary optical assembly which provides the following functions: generates a collimated beam of light whose power output may be modulated electronically to perform read, write and erase functions; generates an electrical data signal derived from a portion of a returning light beam; and generates suitable electrical error signals for servomechanical control of radial and axial motion of a focused light spot on information storage media.
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公开(公告)号：US5432763A
公开(公告)日：1995-07-11
申请号：US325532
申请日：1994-10-18
IPC分类号： G11B7/085 , G11B7/09 , G11B7/12 , G11B11/105 , G11B7/00
CPC分类号： G11B11/10541 , G11B11/10569 , G11B11/10576 , G11B7/08576 , G11B7/09 , G11B7/093 , G11B7/0932 , G11B7/12
摘要： A miniature rotary actuator optical head assembly incorporating data and servo detecting elements mounted inside a source/detector module, which is located on the rotary actuator arm adjacent to the pivot point of the rotary actuator arm. The miniature rotary actuator optical head also includes a miniature focus motor which supports a fold mirror and an objective lens and repositions the fold mirror and objective lens simultaneously whenever a focus error is received. The focus motor can be actuated by a magnetic bias field that originates external to the rotary actuator arm, particularly the magnetic bias field generated for magneto-optical recordation. The optical assembly may also include two stage tracking by mounting the light source on a pair of lateral movement flexures and supplying a fine tracking error signal to actuate the movement of the light source.
摘要翻译： 一种微型旋转致动器光学头组件，其包含安装在源/检测器模块内的数据和伺服检测元件，其位于与旋转致动器臂的枢转点相邻的旋转致动器臂上。 微型旋转致动器光学头还包括微型聚焦马达，其支持折叠镜和物镜，并且每当接收到聚焦误差时也重新定位折叠镜和物镜。 聚焦电机可以由位于旋转致动器臂的外部的磁偏置磁场来驱动，特别是用于磁光记录产生的磁偏置磁场。 光学组件还可以包括通过将光源安装在一对横向运动弯曲上并提供精细跟踪误差信号来致动光源的运动的两级跟踪。
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3.发明授权Electronic offset compensation of the continuous composite track error signal in optical recording 失效光学记录中连续复合轨迹误差信号的电子偏移补偿
公开(公告)号：US5197058A
公开(公告)日：1993-03-23
申请号：US664881
申请日：1991-03-05
CPC分类号： G11B7/08517 , G11B7/094
摘要： When doing multitrack seek or a single track jump, the midpoint between the maximum and the minimum of a tracking error signal is determined. A peak detector detects the positive peak and the negative peak. These maximum and minimum values are stored in a sample and hold circuit. A summing circuit determines the midpoint between the maximum and the minimum of the tracking error signal. An operational amplifier provides a true error signal to the servo control system that provides the appropriate servo operating point. The invention is based on the fact that even though there is no absolute reference signal indicating the appropriate on-track position, the tracking servo system obtains the track error over the whole range of positions relative to track center when doing a multitrack seek or a single track jump. The appropriate servo operating point is the midpoint between the maximum and the minimum of the track error signal. This provides compensation for level shifts due to factors such as beam displacement, or detector mispositioning, changes in read/write beam profile, and disk tilt. The present invention solves the key disadvantage of the continuous groove tracking method by eliminating tracking offsets without adding additional information to the disk. It also avoids imposing overhead on the data channel. It compensates for effects of disk tilt, detector misalignment, detector and amplifier offsets, and beam decentration due to fine tracking.
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公开(公告)号：US4688201A
公开(公告)日：1987-08-18
申请号：US692278
申请日：1985-01-16
申请人： David K. Towner , David K. Campbell
发明人： David K. Towner , David K. Campbell
摘要： A two-stage beam positioning apparatus for use in an optical data storage device is provided. A fixed assembly includes a light beam source and detector, light beam focusing and track following apparatus. The fixed assembly is optically coupled to a movable assembly which provides coarse positioning of a focused light spot on a data storage medium such as an optical recording disc. The coarse positioning assembly is mechanically independent from the light beam source and detector assembly and, therefore, may be made very stiff and light resulting in a high bandwidth and reduced data access time. Since the light beam source and detector assembly and the focusing and track following control apparatus are mechanically isolated from the movable coarse positioning assembly, the size and mass of these components are not critical and do not affect data access time.
摘要翻译： 提供了一种用于光学数据存储装置的两级光束定位装置。 固定组件包括光束源和检测器，光束聚焦和跟踪跟踪装置。 固定组件光学耦合到可移动组件，其提供聚焦光斑的粗略定位在诸如光学记录盘的数据存储介质上。 粗定位组件在机械上独立于光束源和检测器组件，并且因此可以变得非常刚硬和光，导致高带宽和减少的数据访问时间。 由于光束源和检测器组件以及聚焦跟踪跟随控制装置与可移动粗定位组件机械隔离，因此这些部件的尺寸和质量不是关键的，并且不影响数据访问时间。
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公开(公告)号：US07298414B2
公开(公告)日：2007-11-20
申请号：US10353675
申请日：2003-01-29
申请人： Donald J. Stavely , David K. Campbell , Eric F. Aas , Gregory V. Hofer , Scott A. Woods , Dan L. Dalton , Kurt E. Spears
发明人： Donald J. Stavely , David K. Campbell , Eric F. Aas , Gregory V. Hofer , Scott A. Woods , Dan L. Dalton , Kurt E. Spears
IPC分类号： G03B13/00
CPC分类号： H04N5/23212
摘要： Viewfinder apparatus, methods, and digital cameras that provide autofocus using retroreflected eye focus measurements. When a user looks at a part of a scene that is the intended subject of the image, his or her eye is correctly focused. The present invention measures the focus distance of the eye when the eye is focused on the desired location in the scene, and then uses the measured distance to set the focus of the camera.
摘要翻译： 取景器设备，方法和数码相机，使用回射眼睛聚焦测量提供自动对焦。 当用户看到作为图像的预期主题的场景的一部分时，他或她的眼睛被正确地聚焦。 本发明在眼睛聚焦在场景中的期望位置时测量眼睛的对焦距离，然后使用测量的距离来设置照相机的焦点。
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公开(公告)号：US4389671A
公开(公告)日：1983-06-21
申请号：US191844
申请日：1980-09-29
CPC分类号： H04N7/171 , H04N7/1675
摘要： An apparatus for scrambling a television signal in which horizontal lines of the transmitted television picture are selectively inverted in accordance with the state of a pseudorandom noise generator. In order to permit correction of the throughput gain as well as the throughput offset at the receiving end of the communication link so as to obtain a desired level of picture quality, particularly in a satellite communication system, an analog calibration signal representing both black and white levels is inserted into a horizontal line of the vertical retrace interval at the transmission end of the link. This calibration signal is then detected at the receiving end of the link and the signal levels are adjusted as needed. In addition, a randomly-varying key code signal for resetting the pseudorandom noise generator is randomly inserted into another horizontal line of the vertical retrace period to control scrambling. The audio portion of the television signal is also scrambled by randomly shifting the audio carrier between first and second offset frequencies.
摘要翻译： 一种用于对根据伪随机噪声发生器的状态选择性地反转所发送的电视图像的水平线的电视信号进行加扰的装置。 为了允许校正通信链路的接收端的吞吐量增益以及吞吐量偏移，以便获得期望的图像质量水平，特别是在卫星通信系统中，表示黑色和白色的模拟校准信号 电平被插入在链路的发送端的垂直回扫间隔的水平线中。 然后在链路的接收端检测该校准信号，并根据需要调整信号电平。 此外，用于复位伪随机噪声发生器的随机变化的键码信号被随机地插入到垂直回扫周期的另一水平线中以控制加扰。 电视信号的音频部分也通过随机移动第一和第二偏移频率之间的音频载波来加扰。
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公开(公告)号：US08063940B2
公开(公告)日：2011-11-22
申请号：US10842223
申请日：2004-05-10
申请人： Donald J. Stavely , Christopher A. Whitman , Gregory V. Hofer , David K. Campbell , Jason E. Yost
发明人： Donald J. Stavely , Christopher A. Whitman , Gregory V. Hofer , David K. Campbell , Jason E. Yost
IPC分类号： H04N5/228
CPC分类号： H04N5/23258 , G03B17/00 , H04N5/23287
摘要： Image stabilization systems and methods are disclosed. One embodiment of the image stabilization method, among others, includes detecting motion of a camera, and responsive to the detected motion, changing an optical filter orientation to displace an image provided on a sensor.
摘要翻译： 公开了图像稳定系统和方法。 图像稳定方法的一个实施例包括检测相机的运动，并且响应于检测到的运动，改变光学滤波器取向以移位设置在传感器上的图像。
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公开(公告)号：US07084910B2
公开(公告)日：2006-08-01
申请号：US10071026
申请日：2002-02-08
申请人： Frederic C Amerson , Paul M. Hubel , Donald J Stavely , Charles H McConica , K Douglas Gennetten , Susan Hunter , David K. Campbell
发明人： Frederic C Amerson , Paul M. Hubel , Donald J Stavely , Charles H McConica , K Douglas Gennetten , Susan Hunter , David K. Campbell
IPC分类号： H04N5/262
摘要： A digital image capture and processing system, comprising a lens coupled to a lens control element is disclosed. The image capture system includes an image sensor configured to capture images from the lens, and a memory element and a processor coupled to the lens control element. The memory element includes image capture software, where the image capture software causes the lens and the image sensor to capture at least two images, each of the at least two images captured using a varying parameter and stored as a single file where the at least two images are combined to form a new image having at least one characteristic different from corresponding characteristics of the at least two images.
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公开(公告)号：US5665963A
公开(公告)日：1997-09-09
申请号：US590539
申请日：1996-01-24
申请人： David K. Campbell
发明人： David K. Campbell
CPC分类号： G01J3/513
摘要： A color filter system for an optical system, applicable to optical systems in color image scanners, copiers, video cameras and digital cameras. The optical system includes a photosensor army, transmissive color filters on the photosensor array and a corrective reflective filter adjacent to the photosensor array. The transmissive color filters on the photosensor array are imperfect, transmitting too much visible red as well as infrared. The adjacent reflective filter compensates by suppressing longer visible red wavelengths and infrared wavelengths. The combination provides color precision with cost and manufacturing advantages relative to attempting to provide precise transmissive filters on the photosensor array or relative to providing compensation filters elsewhere in the system.
摘要翻译： 一种用于光学系统的滤色器系统，适用于彩色图像扫描仪，复印机，摄像机和数码相机中的光学系统。 光学系统包括光传感器军团，光传感器阵列上的透射滤色器和与光电传感器阵列相邻的校正反射滤光器。 光传感器阵列上的透射滤色器是不完美的，透射太多的可见红光以及红外线。 相邻的反射滤光器通过抑制更长的可见红色波长和红外波长来补偿。 相对于在光电传感器阵列上提供精确的透射滤波器或相对于在系统中的其他地方提供补偿滤波器，该组合提供了颜色精度与成本和制造优势。
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公开(公告)号：US5435611A
公开(公告)日：1995-07-25
申请号：US273232
申请日：1994-07-11
摘要： First and second legs are pivotally mounted in a scissor-like relationship about an adjustable pivot axle, wherein an outermost end of the legs have cooperative first and second jaws having facing mirror image surfaces arranged to secure aluminum cans.
摘要翻译： 第一和第二腿以关于可调节枢轴的剪刀状关系枢转地安装，其中腿的最外端具有配合的第一和第二钳口，其具有布置成固定铝罐的面对的镜像表面。
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