公开(公告)号：US5034938A

公开(公告)日：1991-07-23

申请号：US386369

申请日：1989-07-28

申请人： Fumihiko Yokogawa

发明人： Fumihiko Yokogawa

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B11/10 ,  G11B11/105 ,  G11B19/28 ,  G11B20/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  H04N5/85 ,  H04N5/932

CPC分类号： G11B20/10 ,  G11B11/1053 ,  G11B11/10595 ,  G11B19/28 ,  G11B27/19 ,  G11B27/24 ,  G11B7/004 ,  G11B7/00745 ,  H04N5/85 ,  H04N5/932 ,  G11B2220/20 ,  G11B2220/2587 ,  G11B27/3027

摘要： An optical disc recording and playing apparatus records a video format signal on an optical disc on which an address signal is recorded in the form of prepits, while controlling the rotation of the optical disc on the basis of a phase difference between a synchronizing signal in the video format signal to be recorded and the address signal read-out from the optical disc, and reproduces the recorded video format signal. During the playing operation the apparatus generates a synchronizing signal which is synchronized with the reproduced video format signal and the generated synchronizing signal is outputted in place of the video format signal for the period of sections of the video format signal corresponding to the address signal. With this feature, generation of disturbances in the reproduced picture is surely prevented.

摘要翻译： 光盘记录和播放装置在以预先形式存储地址信号的光盘上记录视频格式信号，同时基于在光盘中的同步信号之间的相位差来控制光盘的旋转 要记录的视频格式信号和从光盘读出的地址信号，并再现所记录的视频格式信号。 在播放操作期间，装置产生与再现的视频格式信号同步的同步信号，并且产生的同步信号被输出以代替对应于地址信号的视频格式信号的段的周期的视频格式信号。 利用该特征，可靠地防止再现图像中的干扰的产生。

公开(公告)号：US4829502A

公开(公告)日：1989-05-09

申请号：US81441

申请日：1987-08-04

申请人： Yoshiro Aoyagi ,  Toshiyuki Kimura ,  Susumu Niinuma ,  Minoru Yoshioka ,  Fumihiko Yokogawa ,  Keiichi Matsumoto ,  Akira Haeno ,  Takashi Sato ,  Yoshiro Nishi ,  Yoshihiko Watanabe ,  Hiroyuki Hirano ,  Youichi Ogawa

发明人： Yoshiro Aoyagi ,  Toshiyuki Kimura ,  Susumu Niinuma ,  Minoru Yoshioka ,  Fumihiko Yokogawa ,  Keiichi Matsumoto ,  Akira Haeno ,  Takashi Sato ,  Yoshiro Nishi ,  Yoshihiko Watanabe ,  Hiroyuki Hirano ,  Youichi Ogawa

IPC分类号： G11B7/0037 ,  G11B7/085 ,  G11B17/00 ,  G11B19/00 ,  G11B19/04 ,  G11B21/02 ,  G11B27/10 ,  G11B33/08 ,  G11B33/10 ,  G11B33/14

CPC分类号： G11B19/00 ,  G11B17/00 ,  G11B19/04 ,  G11B21/02 ,  G11B27/105 ,  G11B33/08 ,  G11B33/10 ,  G11B33/14 ,  G11B7/0037 ,  G11B7/08547

摘要： An automatic disc player including a housing, disc carrier means to convey a disc between predetermined playback position and a predetermined withdrawal position ready to be withdrawn out of the housing upon termination of plaback operation, signal generating means for producing control signals to be predominant over various steps of the playback operation, and an electric control circuit responsive to the control signals to control the various steps of the playback operation, the signal generating means comprising position detecting means responsive to movement of the disc to the withdrawal position and operative to produce a signal when the disc being moved away from the playback position reaches the withdrawal position, and playback re-start switch means which is operative to produce a signal in response to slight movement of the disc from the withdrawal position toward the playback position, the control signals to be produced by the signal generating means including signals to control the start of playback operation. The position detecting means and the playback re-start switch means are connected in series with between ground and the control circuit, and the signals to control the start of playback operation include the signal from the playback re-start switch means.

摘要翻译： 一种自动盘片播放器，包括一个外壳，盘片承载装置，用于在预定播放位置和一个预定的撤销位置之间传送一个盘片，准备在平板打印操作终止时将其从外壳中取出;信号发生装置，用于产生控制信号， 重放操作的步骤，以及响应于控制信号来控制重放操作的各种步骤的电气控制电路，信号产生装置包括位置检测装置，其响应于盘的移动到撤回位置并且可操作以产生信号 当光盘离开播放位置移动到达取出位置时，以及播放重启开关装置，其响应于从取出位置向重放位置的轻微移动而产生信号，控制信号到 由信号产生装置产生，包括信号 rol开始播放操作。 位置检测装置和重放重启开关装置与接地和控制电路串联连接，控制重放操作开始的信号包括来自重放重启开关装置的信号。

公开(公告)号：US4737696A

公开(公告)日：1988-04-12

申请号：US58126

申请日：1987-06-04

申请人： Fumihiko Yokogawa ,  Akira Motoyama

发明人： Fumihiko Yokogawa ,  Akira Motoyama

IPC分类号： G11B7/09 ,  G05D3/12 ,  H01F7/18 ,  H03F3/68 ,  G05B11/00

CPC分类号： H01F7/1872

摘要： An actuator drive circuit for driving a load using a single power supply. The current drive is not dependent on load impedance characteristics. Drive means provides a voltage across the first terminal and the second terminal during at input signal positive phase, and reverse voltage across the first terminal and the second terminal during a negative phase. A current detection resistor is connected in series with the load, and the voltage across the resistor is input to a differential amplifier. The amplifier output provides feedback to the drive means.

摘要翻译： 用于使用单个电源驱动负载的致动器驱动电路。 电流驱动不依赖于负载阻抗特性。 驱动装置在输入信号正相期间在第一端子和第二端子处提供电压，并且在负相位期间在第一端子和第二端子之间提供反向电压。 电流检测电阻与负载串联连接，电阻两端的电压输入到差分放大器。 放大器输出为驱动装置提供反馈。

公开(公告)号：US4540897A

公开(公告)日：1985-09-10

申请号：US507645

申请日：1983-06-27

申请人： Saburo Takaoka ,  Ryuichi Naito ,  Fumihiko Yokogawa ,  Youichi Ogawa

发明人： Saburo Takaoka ,  Ryuichi Naito ,  Fumihiko Yokogawa ,  Youichi Ogawa

IPC分类号： G11B20/14 ,  G11B5/09 ,  G11B20/10 ,  H03K5/08 ,  H04L25/03 ,  H04L27/00 ,  H04L27/14

CPC分类号： G11B20/10009 ,  G11B20/10527

摘要： A data reading device for reading out data modulated according to a system wherein the time ratio of low to high level signals is substantially unity employs a time ratio detector and an intermediate level detector. A comparator compares the reproduced output level with a synthesized signal which may represent a combination of the outputs of the time ratio detector and the intermediate level detector.

摘要翻译： 一种用于读出根据其中低电平信号的时间比基本上为单位的系统调制的数据的数据读取装置，其使用时间比率检测器和中间电平检测器。 比较器将再现的输出电平与可以表示时间比率检测器和中间电平检测器的输出的组合的合成信号进行比较。

公开(公告)号：US5987066A

公开(公告)日：1999-11-16

申请号：US759956

申请日：1996-12-03

申请人： Tadashi Kojima ,  Koichi Hirayama ,  Hisashi Yamada ,  Yoshiaki Moriyama ,  Fumihiko Yokogawa ,  Takao Arai ,  Toshifumi Takeuchi ,  Shinichi Tanaka ,  Akira Kurahashi ,  Toshiyuki Shimada

发明人： Tadashi Kojima ,  Koichi Hirayama ,  Hisashi Yamada ,  Yoshiaki Moriyama ,  Fumihiko Yokogawa ,  Takao Arai ,  Toshifumi Takeuchi ,  Shinichi Tanaka ,  Akira Kurahashi ,  Toshiyuki Shimada

IPC分类号： G11B20/14 ,  H03M5/14 ,  H03M7/14 ,  H04L7/04 ,  H04L7/08 ,  H04L25/49 ,  H04B14/04 ,  G11B3/90 ,  G11B5/09

CPC分类号： H03M5/145 ,  G11B20/1426 ,  H04L25/4906 ,  H04L7/041

摘要： A transmitting method of digital data whereby information data can be reproduced at a high precision. In order to retain digital data in sectors comprising a plurality of sync frames and sequentially transmit, the sync frame is comprised of the sync signal and the run length limited code which satisfies the limitations of the minimum run length and the maximum run length, and the sync signal includes the sync pattern constituted by a bit pattern of a run length that is longer than the maximum run length by only 3T and addition bit patterns which are arranged before and after the bit pattern and each of which has a run length that is longer than the minimum run length. The sync signal includes a specific code which indicates a position in the sector and which enables the DC control to be performed.

摘要翻译： 数字数据的发送方法，可以高精度地再现信息数据。 为了在包括多个同步帧的扇区中保留数字数据并顺序地发送，同步帧包括满足最小游程长度和最大游程长度的限制的同步信号和游程长度限制码，并且 同步信号包括由游程长度比最大游程长度只有3T的游程长度的位模式构成的同步模式，以及排列在位模式之前和之后的游程长度更长的相加位模式 比最小游程长。 同步信号包括指示扇区中的位置并且能够执行DC控制的特定代码。

公开(公告)号：US5430700A

公开(公告)日：1995-07-04

申请号：US309114

申请日：1994-09-20

申请人： Hiroki Kuribayashi ,  Fumihiko Yokogawa

发明人： Hiroki Kuribayashi ,  Fumihiko Yokogawa

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B7/09 ,  G11B7/14

CPC分类号： G11B7/0903 ,  G11B7/14 ,  Y10S428/913

摘要： An optical recording medium in which tracks are constructed by a plurality of combination tracks and-the distance between tracks is narrowed so that data is recorded at a high density, and a playing apparatus for such a medium. The recording medium has a plurality of combination tracks whose track pitch is smaller than a spot diameter of a reading beam of an optical pickup. A track gap which is larger than an optical cut-off wavelength of the optical pickup and is larger than the track pitch is provided for each combination track. The playing apparatus includes a reading which generates beam spots which are equal in number to the tracks constructing the combination track of the recording medium, and a tracking error detecting section for detecting a level difference between two reading signals obtained from tracks at both inner and outer peripheries of the combination track by the reading means, thereby detecting a tracking error.

摘要翻译： 一种光记录介质，其中轨道由多个组合轨迹构成，并且轨道之间的距离变窄，使得以高密度记录数据，以及用于这种介质的播放装置。 记录介质具有多个轨道间距小于光学拾取器的读取光束的光斑直径的组合轨迹。 为每个组合轨道提供比光学拾取器的光学截止波长大并且大于轨道间距的轨道间隙。 播放装置包括产生与构成记录介质的组合轨迹的轨道数相等的光束点的读取，以及用于检测从内部和外部的轨道获得的两个读取信号之间的电平差的跟踪误差检测部分 通过读取装置的组合轨迹的周边，从而检测跟踪误差。

公开(公告)号：US5376422A

公开(公告)日：1994-12-27

申请号：US886105

申请日：1992-05-21

申请人： Hiroki Kuribayashi ,  Fumihiko Yokogawa

发明人： Hiroki Kuribayashi ,  Fumihiko Yokogawa

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B7/09 ,  G11B7/14 ,  B32B3/00

CPC分类号： G11B7/0903 ,  G11B7/14 ,  Y10S428/913

摘要： An optical recording medium in which tracks are constructed by a plurality of combination tracks and the distance between tracks is narrowed so that data is recorded at a high density, and a playing apparatus for such a medium. The recording medium has a plurality of combination tracks whose track pitch is smaller than a spot diameter of a reading beam of an optical pickup. A track gap which is larger than an optical cut-off wavelength of the optical pickup and is larger than the track pitch is provided for each combination track. The playing apparatus includes a reading device which generates reading beam spots which are equal in number to the tracks constructing the combination track of the recording medium, and a tracking error detecting section for detecting a level difference between two reading signals obtained from tracks at both inner and outer peripheries of the combination track by the reading means, thereby detecting a tracking error.

摘要翻译： 其中轨道由多个组合轨道构成并且轨道之间的距离变窄以便以高密度记录数据的光记录介质和用于这种介质的播放装置。 记录介质具有多个轨道间距小于光学拾取器的读取光束的光斑直径的组合轨迹。 为每个组合轨道提供比光学拾取器的光学截止波长大并且大于轨道间距的轨道间隙。 播放装置包括读取装置，该读取装置产生与构成记录介质的组合轨迹的轨道数量相等的读取光束点，以及跟踪误差检测部分，用于检测从两个内部的轨道获得的两个读取信号之间的电平差 和通过读取装置组合轨迹的外周，从而检测跟踪误差。

公开(公告)号：US5121219A

公开(公告)日：1992-06-09

申请号：US511168

申请日：1990-04-19

申请人： Fumihiko Yokogawa

发明人： Fumihiko Yokogawa

IPC分类号： G11B7/0037 ,  G11B19/28 ,  G11B27/10 ,  H04N9/89

CPC分类号： G11B19/28 ,  G11B27/10 ,  G11B7/0037 ,  H04N9/89

摘要： In a disk recording/reproducing apparatus, phase control of a spindle servo system is made to be smaller than a range of time base control of a time base servo system, so as to obtain spindle servo phase jitter equivalent to that obtained using a horizontal synchronizing signal, which may not be available under all circumstances. Preferably, the range of phase control is no more than 1/10 of the range of variation of a variable delay line used to provide a time base reference signal.

摘要翻译： 在磁盘记录/再现装置中，使主轴伺服系统的相位控制小于时基伺服系统的时基控制范围，从而获得与使用水平同步的伺服相位抖动相当的主轴伺服相位抖动 信号，在任何情况下都不可用。 优选地，相位控制的范围不超过用于提供时基参考信号的可变延迟线的变化范围的1/10。

公开(公告)号：US4977553A

公开(公告)日：1990-12-11

申请号：US197242

申请日：1988-05-23

申请人： Fumihiko Yokogawa

发明人： Fumihiko Yokogawa

IPC分类号： G11B7/007 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/09 ,  G11B7/095

CPC分类号： G11B7/00736 ,  G11B7/0901 ,  G11B7/0945

摘要： Identification of a tracking servo system type with which a recording disc is to be used. Data is provided to inform a recording/reproducing apparatus that user data is recorded for reproduction by either a sample servo system or a continuous reproduction servo system. Identification data is recorded in a constant angular velocity (CAV) format, in which the data, recorded a plurality of times in a predetermined region of the disc, is located in the same circumferential but a different radial location on the disc. The predetermined region may be in an inner or outer portion of the disc, and has a width greater than the eccentricity of the disc.

摘要翻译： 识别要使用记录盘的跟踪伺服系统类型。 提供数据以通知记录/再现装置用户数据被记录以供采样伺服系统或连续再现伺服系统再现。 识别数据以恒定角速度（CAV）格式记录，其中在盘的预定区域中记录多次的数据位于盘上相同的圆周上但不同的径向位置。 预定区域可以在盘的内部或外部部分中，并且具有大于盘的偏心度的宽度。

公开(公告)号：US4937809A

公开(公告)日：1990-06-26

申请号：US157667

申请日：1988-02-19

申请人： Toshiyuki Miyadera ,  Shuichi Yanagisawa ,  Fumihiko Yokogawa

发明人： Toshiyuki Miyadera ,  Shuichi Yanagisawa ,  Fumihiko Yokogawa

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/125

CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B7/005

摘要： An optical recording apparatus of the type employing a read/write laser adapts the recording light beam to various linear speeds of the recording disk by jointly controlling both the beam power and the duty ratio of the recording signal in accordance with the radial position of the beam spot on the disk.

摘要翻译： 使用读/写激光器的类型的光记录装置通过根据光束的径向位置共同控制记录信号的光束功率和占空比两者，将记录光束适应各种记录盘的线速度 磁盘上的斑点。