专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4495407A System for focusing an optical head onto a flat surface 失效
标题翻译：用于将光学头聚焦到平坦表面上的系统
公开(公告)号：US4495407A
公开(公告)日：1985-01-22
申请号：US362613
申请日：1982-03-29
申请人： Hiroshi Kodama , Masaharu Sakamoto , Ken Ohshima , Shoji Yoshikawa , Kunio Yamamiya , Kiichi Kato
发明人： Hiroshi Kodama , Masaharu Sakamoto , Ken Ohshima , Shoji Yoshikawa , Kunio Yamamiya , Kiichi Kato
IPC分类号： G02B7/00 , G02B7/32 , G11B7/085 , G11B7/09 , G01J1/20
CPC分类号： G11B7/08511 , G02B7/32 , G11B7/0908
摘要： A system for focusing an optical head onto a flat surface has a mechanism for moving the optical head in the direction of the optical axis of the head and a mechanism for moving an objective lens in the optical head in the direction of the optical axis of the lens. A laser beam projected from the objective lens of the optical head is reflected on the flat surface, is reflected on the beam splitter, and is introduced into a detector unit. The detector unit thus generates a focusing signal having a level responsive to the distance between the objective lens and the surface. The optical head is lowered by the mechanism for moving the optical head in accordance with the focusing signal when it passes a predetermined point, and is operated to locate the focal point of the objective lens on the surface. Thereafter, the mechanism for moving the optical head becomes inoperative, and the mechanism for moving the objective lens is operated. This mechanism operates in accordance with the focusing signal and locates the focal point of the objective lens always on the surface.
摘要翻译：用于将光学头聚焦到平坦表面上的系统具有用于沿着光头的光轴方向移动光学头的机构，以及用于沿光学头的光轴方向移动光学头中的物镜的机构镜片。从光头的物镜投射的激光束在平坦表面上反射，在分束器上被反射，并被引入到检测器单元中。因此，检测器单元产生具有响应物镜与表面之间距离的电平的聚焦信号。通过用于在通过预定点时根据聚焦信号移动光学头的机构降低光学头，并且操作以将物镜的焦点定位在表面上。此后，用于移动光学头的机构变得不起作用，并且用于移动物镜的机构被操作。该机构根据聚焦信号进行操作，并将物镜的焦点始终位于表面上。

2. 发明授权

US4505585A System for detecting defects on an optical surface 失效
标题翻译：用于检测光学表面上的缺陷的系统
公开(公告)号：US4505585A
公开(公告)日：1985-03-19
申请号：US362680
申请日：1982-03-29
申请人： Shoji Yoshikawa , Ken Ohshima , Hiroshi Kodama , Kunio Yamamiya , Masaharu Sakamoto , Kiichi Kato
发明人： Shoji Yoshikawa , Ken Ohshima , Hiroshi Kodama , Kunio Yamamiya , Masaharu Sakamoto , Kiichi Kato
IPC分类号： G01N21/84 , G01N21/88 , G01N21/95 , G06T7/00 , G11B7/0037 , G01B11/30 , G06F15/20
CPC分类号： G01N21/9506 , G11B7/00375 , G01N2021/8864 , G01N21/9501
摘要： In a system for detecting defects on an optical surface, a disk to be inspected is mounted on a turntable, and is attracted on the surface of the turntable. On the disk is provided an optical head having an objective lens located at its focal point on the surface of the disk. A laser beam emitted from a laser unit is projected through the optical head onto the disk, is reflected on the disk, and is then directed through the optical head to a photo detector. The optical head is moved in the radial direction of the disk as the turntable is rotated, and the disk is helically scanned by the laser beam. Only a defect signal is extracted from an electrical signal generated from the photo detector in a defect signal generator. The defect signal is compared in a data processing unit, and is converted to defect information of different size. When it is judged that a prescribed region on the surface of the disk is scanned by a position signal from a position sensor for detecting the position of the optical head, the data processing unit generates an address, and the defect information is stored in each size in specific assigned locations of the RAM. The defect information thus stored is displayed on a CRT or is printed out by a printer.
摘要翻译：在用于检测光学表面上的缺陷的系统中，待检查的盘安装在转盘上，并且被吸引在转台的表面上。在光盘上设置有一个光学头，该光学头具有位于其表面上的焦点处的物镜。从激光单元发射的激光束通过光头投影到盘上，在盘上被反射，然后被引导通过光头到光检测器。当转盘旋转时，光头在盘的径向上移动，并且盘被激光束螺旋扫描。在缺陷信号发生器中仅从光电检测器产生的电信号中提取缺陷信号。在数据处理单元中比较缺陷信号，并将其转换为不同大小的缺陷信息。当通过来自用于检测光头的位置的位置传感器的位置信号来判断盘的表面上的规定区域被扫描时，数据处理单元生成地址，并且以每个尺寸存储缺陷信息在RAM的特定分配位置。由此存储的缺陷信息显示在CRT上，或由打印机打印出来。

3. 发明授权

US4499514A Disc drive apparatus 失效
标题翻译：盘驱动装置
公开(公告)号：US4499514A
公开(公告)日：1985-02-12
申请号：US362614
申请日：1982-03-29
申请人： Kunio Yamamiya , Hiroshi Kodama , Ken Ohshima , Shoji Yoshikawa , Kiichi Kato , Masaharu Sakamoto
发明人： Kunio Yamamiya , Hiroshi Kodama , Ken Ohshima , Shoji Yoshikawa , Kiichi Kato , Masaharu Sakamoto
IPC分类号： G11B17/028 , G11B19/20 , G11B23/00 , G11B25/04 , G11B5/012
CPC分类号： G11B17/0282 , G11B19/2009 , G11B23/00 , G11B25/043
摘要： A disc drive apparatus for driving a disc selected from discs of various diameters with and without a central hole comprises: a turntable with a hole at the center of rotation thereof; a turntable support for rotatably supporting the turntable; a motor for driving the turntable; a centering member to be detachably inserted in the hole of the turntable and for mounting a disc with a central hole; a plurality of elastic disc support members which are coaxial with the center of rotation of the turntable, which extend from the surface of the turntable, and which form a plurality of annular shapes; centering index marks, disposed on the turntable, for centering a disc without a central hole; a vacuum pump; and suction channels, one end of which is open to the surface of the turntable and the other end of which is connected to the vacuum pump, for fixing on some of the disc support members the disc selected from discs of various diameters with and without a central hole and placed on some of said disc support members.
摘要翻译：一种盘驱动装置，用于驱动选自具有和不具有中心孔的各种直径的盘的盘，包括：具有在其旋转中心的孔的转台; 用于可旋转地支撑转盘的转盘支撑件; 用于驱动转台的电机; 定心构件可拆卸地插入转盘的孔中并用于安装具有中心孔的盘; 与转盘的旋转中心同轴的多个弹性盘支撑构件，其从转台的表面延伸并且形成多个环形形状; 设置在转盘上的定心折痕标记，用于使没有中心孔的圆盘定心; 真空泵; 以及抽吸通道，其一端通向转台的表面，另一端连接到真空泵，用于将一些盘支撑件固定在盘片上，该碟片选自具有和不具有中心孔并放置在一些所述盘支撑构件上。

4. 发明授权

US4611317A Optical disk apparatus 失效
标题翻译：光盘装置
公开(公告)号：US4611317A
公开(公告)日：1986-09-09
申请号：US561653
申请日：1983-12-15
申请人： Toyoaki Takeuchi , Ken Ohshima , Hideyuki Kenjyo , Yoshiaki Ikeda , Masaharu Sakamoto
发明人： Toyoaki Takeuchi , Ken Ohshima , Hideyuki Kenjyo , Yoshiaki Ikeda , Masaharu Sakamoto
IPC分类号： G11B7/09 , G11B7/12 , G11B7/24 , G11B27/19 , G11B7/00
CPC分类号： G11B7/12 , G11B27/19 , G11B7/09 , G11B7/0941
摘要： An optical disk apparatus has an optical disk for recording data into a recording area on an optical disk and reproducing the recorded data from the recording area. The optical disk is provided at the center with a first section with the same reflectivity as that of the recording area and a second section with a different reflectivity from that of the recording area. A photosensor sense detects the first section and produces a signal representing a reflectivity on the first section. The reflectivity data obtained from the signal level is used for controlling a gain of the servo system according to the reflectivity data.
摘要翻译：光盘装置具有用于将数据记录到光盘上的记录区域并从记录区再现记录数据的光盘。光盘在中央设置有与记录区域相同的反射率的第一部分和与记录区域的反射率不同的第二部分。光传感器感测检测第一部分并且产生表示第一部分上的反射率的信号。从信号电平获得的反射率数据用于根据反射率数据控制伺服系统的增益。

5. 发明授权

US4683560A Microprocessor controlled focussing servo acquisition 失效
标题翻译：微处理器控制聚焦伺服采集
公开(公告)号：US4683560A
公开(公告)日：1987-07-28
申请号：US561631
申请日：1983-12-15
申请人： Toyoaki Takeuchi , Ken Ohshima , Hideyuki Kenjyo , Yoshiaki Ikeda , Masaharu Sakamoto
发明人： Toyoaki Takeuchi , Ken Ohshima , Hideyuki Kenjyo , Yoshiaki Ikeda , Masaharu Sakamoto
IPC分类号： G02B7/28 , G11B7/085 , G11B7/095
CPC分类号： G11B7/085
摘要： In an auto-focussing system, an actuator which moves together with an objective lens is vertically movable against a rotating optical disc and radiates a light beam so as to form a light spot on an information plane of the disc. A focus servo unit moves the actuator so that an optical distance between the actuator and the disc is within a proper distance region and performs the focus control of the light spot on the disc. While the actuator is approaching the optical disc, an auto-focus/focus servo controller initially makes the servo unit nonoperative and, when the actuator reaches a too-far position in a suitable servo loop distance region specified by a servo loop of the focus servo unit, the controller temporarily stops the movement of the actuator and then moves the actuator again from the too-far position by only a predetermined distance, thereby causing the actuator to be located within the focus loop distance region.
摘要翻译：在自动聚焦系统中，与物镜一起移动的致动器可以相对于旋转的光盘上下移动并且辐射光束，以在光盘的信息平面上形成光点。聚焦伺服单元使致动器移动，使得致动器和盘之间的光学距离在适当的距离区域内，并执行光盘上的光点的聚焦控制。当致动器接近光盘时，自动对焦/聚焦伺服控制器最初使得伺服单元不起作用，并且当致动器在由聚焦伺服的伺服环路指定的合适的伺服环路距离区域中达到太远位置时控制器暂时停止致动器的移动，然后使致动器再次从太远位置移动预定距离，从而使致动器位于聚焦环距离区域内。

6. 发明授权

US4508450A System for checking defects on a flat surface of an object 失效
标题翻译：用于检查物体平坦表面上的缺陷的系统
公开(公告)号：US4508450A
公开(公告)日：1985-04-02
申请号：US362621
申请日：1982-03-29
申请人： Ken Ohshima , Masaharu Sakamoto
发明人： Ken Ohshima , Masaharu Sakamoto
IPC分类号： G01N21/88 , G01N21/95 , G11B7/0037
CPC分类号： G01N21/9506 , G11B7/00375 , G01N2021/8861 , G01N2021/8874 , G01N21/9501 , G01N2201/1045
摘要： A checking system for checking defects on an optically flat surface of an object to be checked is adapted to spirally scan the surface of the object with a laser beam which is projected from an optical head. The laser beam is reflected from the surface of the object and converted by a photodetector to an electric signal. The level of the electric signal is compared with a reference level to produce a defect signal. The rotation of the object is detected by a position sensor. A counter counts a position signal in response to the defect signal and the contents of the counter is stored, as data representing a defect start position, in a defect position memory. The length data of the defect signal is counted and stored in a defect length memory. Predetermined defect position data is read out of a defect position memory, while defect length data corresponding to the defect position data is read out of the defect length memory. Position data associated with an area to be displayed is compared with defect position data. When both data coincide with each other, the corresponding defect length data is counted down. During the down count period, defect picture element data is stored in a refresh memory. The picture element data stored in the refresh memory is delivered to a CRT where it is displayed as defect data.
摘要翻译：用于检查待检查物体的光学平坦表面上的缺陷的检查系统适于用从光学头投影的激光束螺旋地扫描物体的表面。激光束从物体的表面反射并由光电检测器转换成电信号。将电信号的电平与参考电平进行比较以产生缺陷信号。物体的旋转由位置传感器检测。计数器响应于缺陷信号对位置信号进行计数，并且将计数器的内容作为表示缺陷开始位置的数据存储在缺陷位置存储器中。将缺陷信号的长度数据计数并存储在缺陷长度存储器中。从缺陷位置存储器中读出预定缺陷位置数据，同时从缺陷位置数据读出与缺陷位置数据对应的缺陷长度数据。与要显示的区域相关联的位置数据与缺陷位置数据进行比较。当两个数据彼此一致时，相应的缺陷长度数据被倒计数。在向下计数期间，将缺陷像素数据存储在刷新存储器中。存储在刷新存储器中的图像元素数据被传送到CRT，其被显示为缺陷数据。

7. 发明授权

US4644514A Head drive control apparatus 失效
标题翻译：头驱动控制装置
公开(公告)号：US4644514A
公开(公告)日：1987-02-17
申请号：US609849
申请日：1984-05-14
申请人： Ken Ohshima , Hiroo Okada , Masaharu Sakamoto
发明人： Ken Ohshima , Hiroo Okada , Masaharu Sakamoto
IPC分类号： G11B7/085 , G11B21/08 , G11B21/10 , G11B21/02
CPC分类号： G11B21/083 , G11B21/085 , G11B7/08588
摘要： A head drive control apparatus has a head and a scale reader. When the head is moved by a head drive mechanism, the scale reader detects the marks on a scale and converts them into a scale signal. In a speed control mode, the scale signal is compared with a target signal by an access signal generator, which produces an access signal representing the difference between the compared signals. The head is moved in accordance with the access signal until the scale signal becomes identical with the target signal. When these signals become equal, the speed control mode is switched to a position control mode. In the position control mode, a scale signal generator, a pulse generator, an up/down counter, a D/A converter, an adder and an interpolator convert the scale signal into an analog signal which represents the position of the head. The analog signal is compared with a position designating signal by a differential amplifier. The head is moved in accordance with the output signal of this amplifier.
摘要翻译：头驱动控制装置具有头和刻度读取器。当头部由头驱动机构移动时，刻度读取器检测刻度上的标记并将其转换成刻度信号。在速度控制模式中，通过存取信号发生器将刻度信号与目标信号进行比较，其产生表示比较信号之间的差的存取信号。根据访问信号移动头，直到缩放信号变得与目标信号相同。当这些信号变得相等时，速度控制模式被切换到位置控制模式。在位置控制模式中，刻度信号发生器，脉冲发生器，上/下计数器，D / A转换器，加法器和内插器将标尺信号转换成表示头部位置的模拟信号。模拟信号通过差分放大器与位置指示信号进行比较。根据该放大器的输出信号移动磁头。

8. 发明授权

US4611316A Actuator operating center detecting circuit and optical disk apparatus with the detecting circuit 失效
标题翻译：执行器操作中心检测电路和带检测电路的光盘设备
公开(公告)号：US4611316A
公开(公告)日：1986-09-09
申请号：US561654
申请日：1983-12-15
申请人： Toyoaki Takeuchi , Ken Ohshima , Hideyuki Kenjyo , Yoshiaki Ikeda , Masaharu Sakamoto
发明人： Toyoaki Takeuchi , Ken Ohshima , Hideyuki Kenjyo , Yoshiaki Ikeda , Masaharu Sakamoto
IPC分类号： G11B7/09 , G11B21/10 , G11B7/00
CPC分类号： G11B7/0901 , G11B21/10
摘要： A detecting circuit for detecting an operating center of an actuator of an optical head includes a first comparator for comparing a tracking signal based on a reproduced signal coming from the optical head with a reference voltage approximate to zero voltage level, and a second comparator for comparing the tracking signal of which the DC component is removed with a second reference voltage approximate to zero voltage level. A level inversion of a binary output signal of the first comparator is detected at a level inverting point of a binary output signal of the second comparator. The operating center of the actuator is checked with the detection of the level inversion.
摘要翻译：用于检测光头的致动器的操作中心的检测电路包括：第一比较器，用于将基于来自光头的再生信号的跟踪信号与近似于零电压电平的参考电压进行比较;以及第二比较器，用于比较以第二参考电压将DC分量去除的跟踪信号接近零电压电平。在第二比较器的二进制输出信号的电平反相点检测第一比较器的二进制输出信号的电平反相。执行器的操作中心通过检测电平反转来检查。

9. 发明授权

US4710908A Servo apparatus for compensating for warp and deflection deviations on optical discs 失效
标题翻译：用于补偿光盘上的翘曲和偏转偏差的伺服装置
公开(公告)号：US4710908A
公开(公告)日：1987-12-01
申请号：US652451
申请日：1984-09-19
申请人： Ken Ohshima , Tadashi Shimizu
发明人： Ken Ohshima , Tadashi Shimizu
IPC分类号： G11B7/00 , G11B7/004 , G11B7/007 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/125 , G11B7/126 , G11B33/10
CPC分类号： G11B33/10 , G11B7/126 , G11B7/0908 , G11B7/0945 , G11B7/0956
摘要： Apparatus for compensating for physical deviations due to warp and surface deflections in optical discs during optical recording and reproducing operations. Focus error signals are developed corresponding to the individual addresses of the physical deviations and the extent of deviation from the in-focus position of the focusing lens by moving a light pickup under control of a microcomputer radially of the disc so that N given radial pitch intervals are defined relative to the record surface of the optical discs and M circumferential address positions of each rotation of the disc. The detector detects the focus error signal values at M.sub.x N.sub.x address locations which are memorized in a memory storing M.times.N values and these are used for developing control signals for moving a focusing lens vertically with an actuator activated by the control signals so that the position of the focusing lens vertically is positioned relative to the record surface so that the focus distance to the record surface is compensated for the physical deviations and an in-focus condition obtained. An arithmetic unit develops light intensity correction values from the memorized data and from this power correction values signals are applied to the source of light beam so that the light beam is applied to the record surface as a spot of proper area dimensions and intensity compensated for the physical deviations.
摘要翻译：用于在光学记录和再现操作期间补偿由于光盘中的翘曲和表面偏转引起的物理偏差的装置。通过在微型计算机在盘的径向控制下移动光拾取器，对应于物理偏差的个别地址以及与聚焦透镜的对焦位置偏离的程度而产生对焦误差信号，使得N个给定的径向间距间隔相对于光盘的记录表面定义，并且每个盘的旋转的M个圆周地址位置。检测器检测存储在存储MxN值的存储器中存储的MxNx个地址位置处的聚焦误差信号值，并且它们用于开发用于通过由控制信号激活的致动器垂直移动聚焦透镜的控制信号，使得聚焦位置透镜垂直地相对于记录表面定位，使得到记录表面的聚焦距离被补偿了物理偏差和获得的对焦条件。算术单元从存储的数据中产生光强度校正值，并且从该功率校正值将信号施加到光束源，使得光束被施加到记录表面，作为适当面积尺寸和强度补偿的点身体偏差。

10. 发明授权

US4718051A Optical beam tracking system for use in optical information recording and/or reproducing apparatus 失效
标题翻译：用于光信息记录和/或再现装置的光束跟踪系统
公开(公告)号：US4718051A
公开(公告)日：1988-01-05
申请号：US686218
申请日：1984-12-26
申请人： Ken Ohshima , Jun Sakashita , Hiroo Okada
发明人： Ken Ohshima , Jun Sakashita , Hiroo Okada
IPC分类号： G11B21/10 , G11B7/085 , G11B7/09 , G11B7/095 , G11B7/00
CPC分类号： G11B7/0953
摘要： A beam tracking system is used in an optical information recording and/or reproducing apparatus to optically track a record medium track. An objective lens irradiates an optical beam onto the record medium and is driven by a lens actuator to sweep the optical beam in a coarse mode relative to a predetermined track of the record medium. A carriage moves relative to the record medium for carrying the objective lens thereon and is driven by a carriage actuator to sweep the optical beam in a fine mode relative to the track. A detector detects the reflected optical beam during the sweep of the optical beam to produce a tracking signal representative of the deviation of the optical beam from the track. A pair of control circuits are connected to control the lens and carriage actuators respectively to effect the alignment of the optical beam with the track according to the tracking signal. A timing circuit is coneected to enable operation of the control circuit which controls the lens actuator and to inhibit operation of the other control circuit which controls the carriage actuator for a certain interval to effect alignment of the optical beam solely by means of the lens actuator, and thereafter to enable the other control circuit to maintain the optical beam alignment by means of the cooperative action of the lens and carriage actuators.
摘要翻译：在光学信息记录和/或再现装置中使用光束跟踪系统来光学地跟踪记录介质轨迹。物镜将光束照射到记录介质上并由透镜致动器驱动，以相对于记录介质的预定轨迹以粗略模式扫描光束。托架相对于记录介质移动以在其上携带物镜，并且由托架致动器驱动以相对于轨道以精细模式扫掠光束。检测器在扫描光束期间检测反射的光束，以产生代表光束偏离轨道的偏差的跟踪信号。连接一对控制电路以分别控制透镜和滑架致动器，以根据跟踪信号实现光束与轨迹的对准。定时电路是圆锥形的，以使控制电路的操作能够控制透镜致动器并且禁止控制滑架致动器一定间隔的另一个控制电路的操作，以仅通过透镜致动器来实现光束对准，之后使得另一个控制电路能够通过透镜和滑架致动器的协同作用来保持光束对准。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式