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1. 发明授权

US5987066A Digital data transmitting method 失效
标题翻译：数字数据传输方式
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。

2. 发明授权

US5629924A Optical disk having synchronous marks and data marks to satisfy certain criteria 失效
标题翻译：具有同步标记和数据标记的光盘以满足某些标准
公开(公告)号：US5629924A
公开(公告)日：1997-05-13
申请号：US699191
申请日：1996-08-19
申请人： Fumihiko Yokogawa , Hideki Hayashi
发明人： Fumihiko Yokogawa , Hideki Hayashi
IPC分类号： G11B7/24 , G11B7/007 , G11B7/013 , G11B19/06 , G11B19/12 , G11B19/247 , G11B19/28 , G11B20/10 , G11B20/14 , G11B27/19 , G11B27/24 , G11B27/30
CPC分类号： G11B7/00745 , G11B19/12 , G11B19/247 , G11B19/28 , G11B20/1403 , G11B20/1426 , G11B27/19 , G11B27/24 , G11B27/3027 , G11B7/24085 , G11B2220/20
摘要： An optical disk having a recording format for a sampled servo system and including a servo field which is preformatted, including synchronous marks for synchronizing detection, and a data field for recording data on each track. The length of the synchronous mark is defined to render the detection of the synchronous pattern possible by making it easily distinguishable from the maximum inversion interval in the data even if the optical disk is of the constant-linear-velocity (CLV) type.
摘要翻译：具有采样伺服系统的记录格式的光盘，包括预格式化的伺服字段，包括用于同步检测的同步标记，以及用于在每个轨道上记录数据的数据字段。定义同步标记的长度，以便即使光盘是恒定线速度（CLV）类型，也可以通过使其容易地与数据中的最大反转间隔区分，来使得同步模式的检测成为可能。

3. 发明授权

US5430700A Apparatus for playing optical recording medium with combination tracks and plural beams tracking servo 失效
标题翻译：用于播放具有组合轨道和多个跟踪伺服的光记录介质的装置
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。

4. 发明授权

US5376422A Optical recording medium and apparatus for playing such a medium 失效
标题翻译：光记录介质和播放这种介质的装置
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。

5. 发明授权

US5121219A Spindle servo utilizing a vertical sync mark 失效
标题翻译：主轴伺服采用垂直同步标记
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。

6. 发明授权

US4977553A Method and apparatus for identifying the type of servo system to be used with a given disc 失效
标题翻译：用于识别与给定盘一起使用的伺服系统的类型的方法和装置
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。

7. 发明授权

US4937809A Optical information recording apparatus 失效
标题翻译：光信息记录装置
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。

8. 发明授权

US4860271A Servo circuit for generating a tracking error signal for optical disk player 失效
标题翻译：用于产生光盘播放器跟踪误差信号的伺服电路
公开(公告)号：US4860271A
公开(公告)日：1989-08-22
申请号：US167284
申请日：1988-03-11
申请人： Fumihiko Yokogawa , Hiroyuki Hirano , Akira Motoyama
发明人： Fumihiko Yokogawa , Hiroyuki Hirano , Akira Motoyama
IPC分类号： G11B7/095 , G11B21/08 , G11B21/10
CPC分类号： G11B7/0953 , G11B21/085 , G11B21/106
摘要： A servo circuit for use in an optical disk player or the like, which can track a disk having a large eccentrically without abnormal sampling of the RF signal produced as a result of scanning the disk. The servo circuit according to this invention comprises a first comparator for comparing RF signals from a pair wobbled pits on a optical disk and generating a difference signal indicating the level difference between the AF signals; a holding means for holding the difference signal for a predetermined period; a reference level producing circuit for setting reference levels having a predetermined width with the level of a previously sampled difference signal of the holding means as a center; a second comparator for comparing the level of a presently sampled difference signal of the first comparator with the reference level and outputting a first signal indicative of the comparative result; and a selector for selecting and outputting, as a tracking error signal, either the presently sampled difference signal and a second signal having a level within the predetermined width of the reference level in accordance with the comparative result. The presently sampled difference signal is selected when the level of the presently sampled difference signal is within the reference level and the second signal is related when the presently sampled difference signal is out of the reference level.
摘要翻译：一种用于光盘播放器等的伺服电路，其可以跟踪具有大的偏心的盘而不会由于扫描盘而产生的RF信号的异常采样。根据本发明的伺服电路包括：第一比较器，用于比较来自光盘上的一对摆动凹坑的RF信号，并产生指示AF信号之间的电平差的差信号; 保持装置，用于保持差分信号一段预定时间; 参考电平产生电路，用于将具有预定宽度的参考电平设置为以所述保持装置的先前采样的差分信号的电平为中心; 第二比较器，用于比较第一比较器的当前采样的差分信号的电平与参考电平，并输出指示比较结果的第一信号; 以及选择器，用于根据比较结果选择和输出当前采样差分信号和具有在基准电平的预定宽度内的电平的第二信号作为跟踪误差信号。当当前采样的差分信号的电平在参考电平内并且当当前采样的差信号在参考电平之外时第二信号相关时，选择当前采样的差分信号。

9. 发明授权

US4701902A Automatic loading disc player 失效
标题翻译：自动加载光盘播放器
公开(公告)号：US4701902A
公开(公告)日：1987-10-20
申请号：US727780
申请日：1985-04-26
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 , G11B25/04
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 playback 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：一种自动盘片播放机，包括一个外壳，一个盘载体装置，用于在重放操作终止之后，在预定播放位置和预定的取出位置之间传送一个盘，以便将其从外壳中取出;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，控制信号到由包括信号的信号发生装置产生开始播放操作。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。

10. 再颁专利

USRE40312E1 Digital data transmitting method 有权
标题翻译：数字数据传输方式
公开(公告)号：USRE40312E1
公开(公告)日：2008-05-13
申请号：US10785864
申请日：2004-02-25
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： H04B14/04
CPC分类号： H03M5/145 , G11B20/1426 , H04L7/041 , H04L25/4906
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 urn 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仅3T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相加位模式，并且每个模式的urn长度为长于最小游程长度。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。

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