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1. 发明授权

US5394385A Optical information recording/reproducing apparatus for performing positioning of recording/reproducing spot by selection of pairs of photo detecting elements 失效
标题翻译：光信息记录/再现装置，用于通过选择成对的光检测元件来执行记录/再现光点的定位
公开(公告)号：US5394385A
公开(公告)日：1995-02-28
申请号：US115707
申请日：1993-09-03
申请人： Takefumi Sakurada , Naoaki Tani , Takumi Sugaya , Takao Rokutan , Mitsuo Oshiba , Akira Shirai
发明人： Takefumi Sakurada , Naoaki Tani , Takumi Sugaya , Takao Rokutan , Mitsuo Oshiba , Akira Shirai
IPC分类号： G11B7/09 , G11B7/14
CPC分类号： G11B7/0901 , G11B7/14
摘要： A beam-spot control unit is arranged such that a light beam is irradiated onto an optical recording medium having a plurality of tracks, through an objective lens, to detect reflecting light of beam spots formed on the tracks by three or more photo detecting elements which are arranged in a direction corresponding to a track transverse direction. From a tracking error signal which is generated by a difference signal of pairs of photo detecting elements which are selected by a selecting switch from these photo detecting elements, a control signal is generated which positions the beam spots to a plurality of recording lines within a single track. A tracking control mechanism is utilized to enable positioning of the beam spots to a plurality of recording lines within the single track to be performed.
摘要翻译：光束点控制单元被布置成使得光束通过物镜照射到具有多个轨道的光学记录介质上，以通过三个或更多个光检测元件检测在轨道上形成的光束点的反射光，被布置在与轨道横向对应的方向上。从由这些光检测元件通过选择开关选择的成对的光检测元件的差分信号产生的跟踪误差信号，产生控制信号，其将波束点定位到单个的多个记录线跟踪。使用跟踪控制机构来使束点定位到要执行的单个轨道内的多条记录线。

2. 发明授权

US5257249A Optical information recording reproducing apparatus for recording and reproducing information on a record medium and for generating track error signals 失效
标题翻译：光信息记录重放装置，用于在记录介质上记录和再现信息并产生磁道误差信号
公开(公告)号：US5257249A
公开(公告)日：1993-10-26
申请号：US857239
申请日：1992-03-25
申请人： Takao Rokutan
发明人： Takao Rokutan
IPC分类号： G11B7/00 , G11B7/0033 , G11B7/005 , G11B7/09 , G11B7/13 , G11B27/10 , G06K7/10
CPC分类号： G11B7/131 , G11B27/102 , G11B7/0033 , G11B7/0945 , G11B7/0946 , G11B7/0948
摘要： An optical information recording/reproducing apparatus performs at least one of recording and reproducing of information by applying an optical spot to a record medium having a plurality of guide tracks and a plurality of information tracks. The apparatus has an optical detection device disposed at a position to which an imaging spot of a light reflected from the record medium is applied and having a plurality of optical detection portions arranged in a line in the direction intersecting at substantially right angles an image of at least one guide track so as to detect the light reflected from the optical detection portions and output a signal, an address position specifying circuit for specifying the address positions of a plurality of optical detection portions for scanning the optical detection device, a detector output selecting circuit for selecting the output of a plurality of optical detection portions in accordance with the output from the address position specifying circuit, a detection region setting circuit for setting a guide track detection region having a predetermined width for detecting a guide track, a track position detection circuit for detecting the address positions of optical detection portions corresponding to at least one guide track on the basis of the output from the detector output selecting circuit and the detection region setting circuit, and a track error generating circuit for generating a track error signal on the basis of the output from the track position detection circuit.
摘要翻译：光信息记录/再现装置通过将光点应用于具有多个导轨和多个信息轨道的记录介质来执行信息的记录和再现中的至少一个。该装置具有光学检测装置，该光学检测装置设置在从记录介质反射的光的成像光点被施加到的位置处，并且具有多个光学检测部分，该光学检测部分沿与图像大致垂直的方向排列成一行至少一个引导轨道，以检测从光学检测部分反射的光并输出信号;地址位置确定电路，用于指定用于扫描光学检测装置的多个光学检测部分的地址位置;检测器输出选择电路用于根据地址位置指定电路的输出来选择多个光学检测部分的输出;检测区域设置电路，用于设置具有用于检测导轨的预定宽度的导轨检测区域，轨道位置检测电路用于检测光学检测部分的地址位置基于来自检测器输出选择电路和检测区域设定电路的输出，至少一个引导轨迹;以及轨道误差发生电路，用于根据轨道位置检测电路的输出产生轨道误差信号。

3. 发明授权

US5157644A Optical card recording/reproducing apparatus 失效
标题翻译：光卡记录/重放装置
公开(公告)号：US5157644A
公开(公告)日：1992-10-20
申请号：US702779
申请日：1991-05-17
申请人： Takao Rokutan
发明人： Takao Rokutan
IPC分类号： G11B7/0033 , G11B7/085 , G11B7/09
CPC分类号： G11B7/0908 , G11B7/0033 , G11B7/08511 , G11B7/0917 , G11B7/0945 , G11B2007/0924
摘要： An optical card recording/reproducing apparatus includes a holding member for holding a recording medium inserted to perform data recording/reproducing. An optical head includes a converging lens for converging a light beam for recording/reproducing on the recording medium. A position control section moves the holding member and optical head by a predetermined distance to conform the converging position of the converging lens to the position of the recording medium close to the holding member. A focus search circuit searches a focal point by changing the distance between the converging lens and recording medium at the position close to the holding member, and outputs an in-focus detection signal. A focus control section controls the distance between the converging lens and recording medium to maintain a focal relationship between the converging lens and recording medium in response to the in-focus detection signal output from the focus search circuit.
摘要翻译：一种光卡记录/重放装置，包括用于保持插入以执行数据记录/再现的记录介质的保持构件。光头包括用于会聚用于记录/再现的光束的会聚透镜。位置控制部使保持构件和光学头移动预定距离，以使会聚透镜的会聚位置与记录介质靠近保持构件的位置一致。焦点搜索电路通过在靠近保持部件的位置改变会聚透镜与记录介质之间的距离来搜索焦点，并输出对焦检测信号。聚焦控制部分控制会聚透镜和记录介质之间的距离，以响应于从聚焦搜索电路输出的对焦检测信号来保持会聚透镜和记录介质之间的焦点关系。

4. 发明授权

US4894817A Method of writing data on optical card by projecting thereon intensity modulated light beam 失效
标题翻译：通过在其上投影强度调制光束在光卡上写入数据的方法
公开(公告)号：US4894817A
公开(公告)日：1990-01-16
申请号：US166380
申请日：1988-03-10
申请人： Hisakatsu Tanaka , Takao Rokutan , Nagahiro Gocho
发明人： Hisakatsu Tanaka , Takao Rokutan , Nagahiro Gocho
IPC分类号： G06F3/06 , B42D15/10 , G06K17/00 , G11B7/00 , G11B7/0033 , G11B7/0045 , G11B19/04 , G11B27/36
CPC分类号： G11B19/04 , G11B27/36 , G11B7/0033 , G11B7/0045
摘要： A method of writing data in a track on a optical card by projecting a writing laser beam whose output power is modulated in accordance with the data to be recorded, wherein immediately after writing the data with the aid of the writing laser beam having a nominal value A.sub.3, the data is read out of the optical card and confirmed whether the data has been correctly written or not. If the data is not correctly written on the optical card, the same data is written again in another track on the optical card with the aid of the writing laser beam whose output power is changed to a higher level A.sub.4. Immediately after this second writing, the data is read out of the optical card to check whether the data has been correctly recorded or not. The data writing operation is repeated by a predetermined number of times by changing the level of the output power of the writing laser beam successively in the order of A.sub.3, A.sub.4, A.sub.2, A.sub.5, A.sub.1, wherein A.sub.1

5. 发明授权

US6034933A Apparatus for recording and reproducing optical information on and from optical record medium 失效
标题翻译：用于在光学记录介质上记录和再现光学信息的装置
公开(公告)号：US6034933A
公开(公告)日：2000-03-07
申请号：US982470
申请日：1997-12-02
申请人： Takao Rokutan
发明人： Takao Rokutan
IPC分类号： G11B7/00 , G11B7/0033 , G11B7/0045 , G11B7/13 , G11B7/135
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0033
摘要： An apparatus for recording and reproducing optical information on and from an optical record medium such as optical card including an optical device having semiconductor lasers 1, 2, diffraction gratings 6, 10a, 10b and objective lens 3 for projecting a recording light beam, two verifying light beams and plural reproducing light beams onto plural adjacent tracks on the optical card 4, and a photo-detector 16 having two verifying light receiving sections 27c and 27e which receive the verifying light beams reflected by the optical card and at least one leak light receiving section 28 which receives only the undesired recording light beams reflected from the optical card 4. Output signals from the verifying light receiving sections 27c and 27e are corrected by an output signal from the leak light receiving section 28. The recorded information can be verified accurately in accordance with either one of the corrected output signals from the verifying light receiving sections 27c and 27e depending upon a moving direction of the optical card with respect to the light spots.
摘要翻译：一种用于在诸如光卡之类的光学记录介质上记录和再现光学信息的装置，包括具有半导体激光器1,2的光学装置，用于投影记录光束的衍射光栅6,10a，10b和物镜3，两个验证光束和多个再现光束到光卡4上的多个相邻轨道上，以及光电检测器16，其具有接收由光卡反射的验证光束的两个验证光接收部分27c和27e，以及至少一个泄漏光接收其仅接收从光卡4反射的不期望的记录光束。来自验证光接收部分27c和27e的输出信号通过来自泄漏光接收部分28的输出信号来校正。可以准确地验证所记录的信息根据来自验证光接收部分27c和27e的校正的输出信号之一结束于光卡相对于光点的移动方向。

6. 发明授权

US5774433A Optical recording/reproducing apparatus using three count control signals for counting a number of tracks crossed by a light beam 失效
标题翻译：使用三个计数控制信号的光学记录/再现装置，用于对由光束交叉的轨道数进行计数
公开(公告)号：US5774433A
公开(公告)日：1998-06-30
申请号：US615775
申请日：1996-03-14
申请人： Takao Rokutan
发明人： Takao Rokutan
IPC分类号： G11B7/0033 , G11B7/085 , G11B7/09
CPC分类号： G11B7/08541 , G11B7/0033
摘要： An optical head irradiates a light beam on an optical recording medium having a plurality of tracks on which data is recorded and a plurality of guide tracks for separating the plurality of tracks, and receives a response light beam from the optical recording medium. A count control signal generation circuit performs predetermined calculation of an output from the optical head, thereby generating three binary count control signals having different phases, which represent the position of the light beam on the tracks and the guide tracks along a direction of the light beam crossing the tracks. A count pulse generation circuit generates a count pulse on the basis of a transition path for positioning the light beam, which is defined by the three count control signals from the count control signal generation circuit. A track count circuit counts the count pulse output from the count pulse generation circuit while recognizing the moving direction of the light beam.
摘要翻译：光头将光束照射在具有记录有数据的多个轨道的光记录介质上，以及多个用于分离多个轨道的导轨，并从光记录介质接收响应光束。计数控制信号发生电路对光头的输出进行预定的计算，从而产生具有不同相位的三个二进制计数控制信号，它们表示沿着光束的方向的轨道和导轨上的光束的位置穿越轨道。计数脉冲发生电路根据来自计数控制信号发生电路的三个计数控制信号所定义的光束定位用转移路径，生成计数脉冲。轨道计数电路对识别出光束的移动方向的计数脉冲发生电路的计数脉冲进行计数。

7. 发明授权

US5438563A Optical information recording/reproducing device which simultaneously reproduces information from plural tracks and optical information recording/reproducing method 失效
标题翻译：光信息记录/再现装置，其同时从多个磁道再现信息和光信息记录/再现方法
公开(公告)号：US5438563A
公开(公告)日：1995-08-01
申请号：US106717
申请日：1993-08-16
申请人： Mitsuo Oshiba , Takefumi Sakurada , Naoaki Tani , Takumi Sugaya , Takao Rokutan
发明人： Mitsuo Oshiba , Takefumi Sakurada , Naoaki Tani , Takumi Sugaya , Takao Rokutan
IPC分类号： G11B7/0033 , G11B7/13 , G11B7/135 , G11B7/14 , G11B17/04 , G11B25/04 , G11B7/08
CPC分类号： G11B25/04 , G11B17/0408 , G11B7/0033 , G11B7/131 , G11B7/1398 , G11B7/14
摘要： An optical information recording/reproducing device is constituted of a focus control circuit connected to a controller, a tracking control circuit, a data processing circuit, and a card feed control circuit. The data processing circuit includes a plurality of I/V converters for converting signals received by a plurality of signal reproducing light receiving elements arranged to an optical detector into current/voltage, and a plurality of binary circuits each for converting the output from the I/V converters into a binary signal in a reference level. The data processing circuit includes a selector for selecting at least two outputs of a plurality of binary circuits. The data processing circuit includes a plurality of bit-clock producing circuits and a plurality of demodulation circuits. The bit-clock producing circuits produce bit clocks based on binary signals originated from selectors and a plurality of binary circuits which are not connected to the selectors. The demodulation circuits executes sampling the two binary signals in accordance with bit clocks and executes data demodulation using the sampled results. The data processing circuit includes a plurality of memories storing demodulated results from the plurality of demodulation circuits.
摘要翻译：光信息记录/再现装置由连接到控制器，跟踪控制电路，数据处理电路和卡片馈送控制电路的聚焦控制电路构成。数据处理电路包括多个I / V转换器，用于将由安置在光检测器上的多个信号再现光接收元件接收的信号转换成电流/电压，以及多个二进制电路，每个用于将来自I / V转换器转换为参考电平的二进制信号。数据处理电路包括用于选择多个二进制电路的至少两个输出的选择器。数据处理电路包括多个位时钟产生电路和多个解调电路。位时钟产生电路基于源自选择器的二进制信号和未连接到选择器的多个二进制电路产生位时钟。解调电路根据位时钟对两个二进制信号进行采样，并使用采样结果执行数据解调。数据处理电路包括存储来自多个解调电路的解调结果的多个存储器。

8. 发明授权

US5298730A Optical card apparatus in which retrial of locating operation of optical card is retried on another track at the time of loading the same 失效
标题翻译：在装载光卡的同时，在其他轨道重试光卡定位操作的光卡装置
公开(公告)号：US5298730A
公开(公告)日：1994-03-29
申请号：US824285
申请日：1992-01-23
申请人： Takao Rokutan
发明人： Takao Rokutan
IPC分类号： G11B7/00 , G06K13/067 , G11B7/0033 , G11B7/085 , G11B21/10 , G11B7/08
CPC分类号： G11B7/0033 , G06K13/067
摘要： Tracks formed on an optical card loaded into a card holder are scanned so that ID information about a reference position on the card is read. This ID information may be used to correct an appraisal of where the card is loaded on the card holder. If the correction operation fails, then the optical head is moved in a direction transverse to the tracks to again perform the correction operation at another track.
摘要翻译：扫描在加载到卡夹中的光卡上形成的轨迹，以便读取关于卡上的参考位置的ID信息。该ID信息可以用于校正卡片在卡座上的加载位置的评估。如果校正操作失败，则光头在横向于轨道的方向上移动，以在另一轨道上再次执行校正操作。

9. 发明授权

US4797872A Method for reproducing data recorded on optical card 失效
标题翻译：用于再现记录在光卡上的数据的方法
公开(公告)号：US4797872A
公开(公告)日：1989-01-10
申请号：US84844
申请日：1987-08-13
申请人： Takao Rokutan
发明人： Takao Rokutan
IPC分类号： G11B7/00 , G06K7/016 , G06K7/10 , G11B7/0033 , G11B7/005
CPC分类号： G11B7/0033 , G11B7/005
摘要： In a method of reproducing data recorded on an optical card in such a manner that distances between successive pits are modulated in accordance with the data, the optical card and an optical reading device are moved relative to each other in a reciprocal manner to derive a read-out signal both in forward and backward movements, the polarity of the read-out signal is selectively inverted in accordance with the mutual relation between the write-in direction and the read-out direction, the read-out signal is converted into a bivalent signal, and a reproduced signal is derived from the bivalent signal in such a manner that front or rear edges of pits viewed in the write-in direction are always detected.
摘要翻译：在以这样的方式再现记录在光卡上的数据的方法中，根据数据对相继的凹坑之间的距离进行调制，光卡和光学读取装置以相互的方式相对移动，从而导出读取在向前和向后移动时，读出信号的极性根据写入方向和读出方向之间的相互关系选择性地反转，读出的信号被转换为二价信号，并且再现信号从二值信号导出，使得始终检测在写入方向上观察的凹坑的前边缘或后边缘。

10. 发明授权

US5511051A Optical recording/reproducing apparatus capable of multi-track access for simultaneous multirack recording/reproduction 失效
标题翻译：能够同时进行多路记录/再现的多磁道存取的光学记录/重放装置
公开(公告)号：US5511051A
公开(公告)日：1996-04-23
申请号：US524076
申请日：1995-09-06
申请人： Takao Rokutan , Mitsuo Oshiba , Takefumi Sakurada , Naoaki Tani , Takumi Sugaya
发明人： Takao Rokutan , Mitsuo Oshiba , Takefumi Sakurada , Naoaki Tani , Takumi Sugaya
IPC分类号： G11B7/0033 , G11B7/085 , G11B7/13 , G11B7/14 , G11B7/00
CPC分类号： G11B7/131 , G11B7/0033 , G11B7/08505 , G11B7/14
摘要： In an optical card recording/reproducing apparatus having a multi-track read type optical head in which a reproducing light beam is radiated on a plurality of tracks on an optical card having a large number of tracks parallel to each other so as to cause a plurality of reproducing light-receiving elements to simultaneously reproduce data of the plurality of tracks on which the reproducing light beam is radiated, when the light beam is to be moved to a target track to be reproduced, the maximum value of an error to be caused during moving the optical head is subtracted from a difference between a current track and the target track so as to determine a moving amount, or when an error generated during the movement of the optical head is represented by .+-.G, and the number of light-receiving elements is set to be 2G+1 or more, any one of the light-receiving elements can be located on the target track by moving the optical head once.
摘要翻译：在具有多轨读取型光学头的光卡记录/再现装置中，其中再现光束照射在具有彼此平行的多个磁道的光卡上的多个轨道上，以便使多个再现光接收元件以同时再现在其上放射再现光束的多个磁道的数据时，当光束移动到要再现的目标轨道时，将在从当前轨道和目标轨道之间的差减去移动光头，以便确定移动量，或当光学头的运动期间产生的误差由+/- G表示时，光的数量接收元件设定为2G + 1以上，光接收元件中的任一个可以通过移动光头一次而位于目标轨道上。

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