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1. 发明授权

US4737696A Actuator drive circuit 失效
标题翻译：执行器驱动电路
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。

2. 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。

3. 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。

4. 发明授权

US06968121B2 Video disc having an aspect ratio information and video disc player having an aspect ratio converting function 失效
标题翻译：具有宽高比信息的视频盘和具有纵横比转换功能的视频盘播放器
公开(公告)号：US06968121B2
公开(公告)日：2005-11-22
申请号：US10231340
申请日：2002-08-30
申请人： Fumihiko Yokogawa
发明人： Fumihiko Yokogawa
IPC分类号： H04N3/22 , H04N5/85 , H04N5/91 , H04N7/00 , H04N7/015 , H04N9/79 , H04N9/82
CPC分类号： H04N9/7925 , H04N5/85 , H04N9/8205
摘要： Image information is reproduced in respectively correspondence to monitors of different aspect ratios as in the NTSC system or HDTV system adaptive type. The image information recorded on a video disc is reproduced. An ID signal held in the video disc is detected. The aspect ratio of the image information to be generated is designated. Only when the aspect ratio indicated by the detected ID signal differs from the designated aspect ratio, the reproduced image information is converted into the image information of the designated aspect ratio. A standardized image signal is produced on the basis of the converted image information.
摘要翻译：图像信息分别对应于NTSC制或HDTV系统自适应型的不同宽高比的监视器。记录在视频盘上的图像信息被再现。检测保持在视频盘中的ID信号。指定要生成的图像信息的纵横比。只有当由检测到的ID信号指示的宽高比与指定的宽高比不同时，再现的图像信息才被转换成指定宽高比的图像信息。基于转换的图像信息生成标准化图像信号。

5. 发明授权

US5646932A Optical disk, tracking error signal generating apparatus, and tracking control apparatus 失效
标题翻译：光盘，跟踪误差信号发生装置和跟踪控制装置
公开(公告)号：US5646932A
公开(公告)日：1997-07-08
申请号：US371119
申请日：1995-01-11
申请人： Hiroki Kuribayashi , Fumihiko Yokogawa
发明人： Hiroki Kuribayashi , Fumihiko Yokogawa
IPC分类号： G11B7/00 , G11B7/005 , G11B7/007 , G11B7/085 , G11B7/09 , G11B7/095 , G11B21/10 , G11B7/24
CPC分类号： G11B7/0938 , G11B7/0903
摘要： An optical disk includes: a plurality of recording tracks, each of the recording tracks having a data area for storing data, and a servo control information area for storing servo information; and tracking pits respectively formed on n neighboring recording tracks, which are adjacent to each other in a radial direction of the optical disk, where n is an integer not less than 3. The tracking pits are located in the servo control information area of each of the n neighboring recording tracks and are spaced apart from each other by a distance not less than a radius of a beam spot for reading data from the optical disk. The tracking pits of the n neighboring recording tracks are located on different radial lines of the optical disk.
摘要翻译：光盘包括：多个记录道，每个记录道具有用于存储数据的数据区，以及用于存储伺服信息的伺服控制信息区; 以及分别形成在光盘的径向上彼此相邻的n个相邻记录磁道上的跟踪凹坑，其中n是不小于3的整数。跟踪凹坑位于每个的伺服控制信息区域中 n个相邻的记录轨道，并且彼此间隔开不少于用于从光盘读取数据的光束点的半径的距离。 n个相邻记录磁道的跟踪凹坑位于光盘的不同径向线上。

6. 发明授权

US5583846A Optical disc and system for generating a tracking error signal for the optical disc 失效
标题翻译：用于产生光盘跟踪误差信号的光盘和系统
公开(公告)号：US5583846A
公开(公告)日：1996-12-10
申请号：US512345
申请日：1995-08-08
申请人： Fumihiko Yokogawa
发明人： Fumihiko Yokogawa
IPC分类号： G11B7/00 , G11B7/005 , G11B7/007 , G11B7/09 , G11B7/095 , G11B7/24 , G11B27/19
CPC分类号： G11B7/00745 , G11B27/19 , G11B7/0901 , G11B7/0938
摘要： A first tracking pit is disposed on one of sides of a track of an optical disc at a position corresponding to a first timing, and a second tracking pit is disposed on the other side of the track at a position corresponding to a second timing. The first tracking pits and the second tracking pits of adjacent two tracks are deflected in a time axis direction.
摘要翻译：在与第一定时对应的位置处，在光盘的轨道的一侧设置第一跟踪凹坑，并且在对应于第二定时的位置处，在轨道的另一侧上设置第二跟踪凹坑。相邻两个轨道的第一跟踪凹坑和第二跟踪凹坑在时间轴方向上偏转。

7. 发明授权

US5434840A Non-linear reflectance optical information recording layer irradiated by a light beam controlled with an amplitude filter 失效
标题翻译：由用振幅滤波器控制的光束照射的非线性反射光学信息记录层
公开(公告)号：US5434840A
公开(公告)日：1995-07-18
申请号：US118726
申请日：1993-09-10
申请人： Toshiharu Ezuka , Fumihiko Yokogawa
发明人： Toshiharu Ezuka , Fumihiko Yokogawa
IPC分类号： G11B7/135 , G11B7/125 , G11B7/24 , G11B7/095
CPC分类号： G11B7/1381 , G11B7/24
摘要： Disclosed is an optical disk player capable of suppressing the influence of side lobes of an irradiated spot on the reflected light from an optical disk, thereby ensuring an improved recording/reproducing characteristic. The optical disk player comprises an optical irradiation system for focusing a laser beam as a spot along an information recording portion of an optical disk, and an optical detection system for guiding reflected light from the spot to a photosensor, whereby recorded information is reproduced based on an output signal from the photosensor. The information recording portion is formed of a reflection film whose reflectance increases gradually or stepwise in accordance with an increase in intensity of incident light. The optical irradiation system has an amplitude filter or a phase filter.
摘要翻译：公开了一种光盘播放器，其能够抑制照射点的旁瓣对来自光盘的反射光的影响，从而确保改善的记录/再现特性。光盘播放器包括：用于将激光束沿着光盘的信息记录部分聚焦在一起的光照射系统，以及用于将来自该点的反射光引导到光传感器的光学检测系统，由此基于来自光电传感器的输出信号。信息记录部分由反射膜根据入射光强度的增加而逐渐或逐步增加的反射膜形成。光照射系统具有振幅滤波器或相位滤波器。

8. 发明授权

US5111443A Optical recording apparatus 失效
标题翻译：光记录装置
公开(公告)号：US5111443A
公开(公告)日：1992-05-05
申请号：US745966
申请日：1991-08-12
申请人： Fumihiko Yokogawa
发明人： Fumihiko Yokogawa
IPC分类号： G11B7/0045 , G11B7/013 , G11B7/08 , G11B7/125
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/081 , G11B7/24085
摘要： A pulse width adjustment circuit for an optical disk recording system selectively adjusts the width of pulses to be recorded in dependence upon an input control signal, which in turn is dependent upon the width of the pulse to be adjusted. In one embodiment a minimum bit length pulse is widened and all other pulses are narrowed. This is useful in recording on the inner portions of a CAV optical disk. In another embodiment a selectable control signal determines whether the minimum bit length signal is to be narrowed or widened.
摘要翻译：用于光盘记录系统的脉冲宽度调节电路根据输入控制信号选择性地调节要记录的脉冲宽度，输入控制信号又依赖于待调节脉冲的宽度。在一个实施例中，最小位长度脉冲被加宽并且所有其它脉冲变窄。这对于在CAV光盘的内部部分进行记录是有用的。在另一个实施例中，可选择的控制信号确定最小比特长度信号是否被缩小或加宽。

9. 发明授权

US5034938A Optical disc recording and playing apparatus 失效
标题翻译：光盘录放机
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。

10. 发明授权

US4829502A Automatic loading disc player 失效
标题翻译：自动加载光盘播放器
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。

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