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1. 发明授权

US5396109A Bit clock regenerating circuit and data regenerating method 失效
标题翻译：位时钟再生电路和数据再生方法
公开(公告)号：US5396109A
公开(公告)日：1995-03-07
申请号：US950139
申请日：1992-09-24
申请人： Mitsuo Oshiba
发明人： Mitsuo Oshiba
IPC分类号： G11B20/14 , H03L7/00 , H04L7/033 , H03L7/06
CPC分类号： H04L7/0331 , G11B20/1403 , H03L7/00
摘要： A bit clock regenerating circuit comprising an edge detector made up of two flip-flops for detecting edges of a binary signal and a gating circuit, a counter receiving an edge detected pulse from the edge detector as a load signal for setting an initial value, counting clock pulses with a given frequency, and generating a bit clock according to the result of the counting, and a ROM in which multiple conversion tables are formed to supply an initial value for the counter according to an output value of the counter, and a conversion table for determining regeneration conditions is selected according to a switching signal.
摘要翻译：一种位时钟再生电路，包括由用于检测二进制信号的边缘和门控电路的两个触发器组成的边缘检测器，接收来自边缘检测器的边缘检测脉冲作为用于设置初始值的负载信号的计数器，计数具有给定频率的时钟脉冲，以及根据计数结果产生位时钟;以及ROM，其中形成多个转换表以根据计数器的输出值提供计数器的初始值，以及转换根据切换信号选择确定再生条件的表。

2. 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。

3. 发明授权

US5583836A Optical recording/reproducing apparatus capable of multi-track access for simultaneous multitrack recording/reproduction 失效
标题翻译：能够同时进行多轨记录/再现的多磁道存取的光记录/重放装置
公开(公告)号：US5583836A
公开(公告)日：1996-12-10
申请号：US103967
申请日：1993-08-09
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： G11B7/00 , G11B7/0033 , G11B7/004 , G11B7/005 , G11B7/085 , G11B7/13 , G11B7/14
CPC分类号： G11B7/131 , G11B7/08505 , G11B7/08547 , G11B7/0033 , 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, the light beam is moved such that the maximum or minimum address of addresses of the tracks irradiated by the light beam is located at the target track. After one multi-track reproduction is performed, the light beam is moved by the distance corresponding to the number of multi-tracks.
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其上放射有再现光束的多个磁道的数据，光束被移动，使得由光束照射的磁道的地址的最大或最小地址位于目标轨道。在执行一次多轨再现之后，光束被移动与多轨迹数相对应的距离。

4. 发明授权

US5132522A Information-reading method 失效
标题翻译：信息阅读方式
公开(公告)号：US5132522A
公开(公告)日：1992-07-21
申请号：US647727
申请日：1991-01-30
申请人： Mitsuo Oshiba
发明人： Mitsuo Oshiba
IPC分类号： G06K3/02 , G06K7/10 , G11B7/0033 , G11B7/007 , G11B7/09 , G11B20/12 , G11B25/04 , G11B27/30
CPC分类号： G11B7/00745 , G06K3/02 , G06K7/1097 , G11B20/1215 , G11B25/04 , G11B27/3027 , G11B7/0033 , G11B7/0901
摘要： An information-reading method employs an optical card including, a data section made by a linear information track, an address section for storing an address of the information track, and a guide section located adjacent to the address section and scanned before reading the address section. The address section and guide section are located at each end of said data section. The address and guide sections located at one end of the data section and the address and guide sections located at the other end of the data section are arranged in the same order in one scanning direction of the information track. The method comprises the steps of reading two addresses out of the address sections, by scanning the information track in the one scanning direction, and comparing the two addresses with each other, to thereby detect a tracking error.
摘要翻译：信息读取方法采用光卡，其包括由线性信息轨道制成的数据部分，用于存储信息轨道的地址的地址部分和位于该地址部分附近并在读取地址部分之前被扫描的引导部分。地址部分和引导部分位于所述数据部分的每一端。位于数据部分的一端的地址和引导部分以及位于数据部分的另一端的地址和引导部分在信息轨道的一个扫描方向上以相同的顺序排列。该方法包括以下步骤：通过在一个扫描方向上扫描信息轨迹，并将两个地址彼此进行比较，从地址部分中读出两个地址，从而检测跟踪误差。

5. 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。

6. 发明授权

US5416309A Information regenerating apparatus for an optical recording medium 失效
标题翻译：光记录介质的信息再生装置
公开(公告)号：US5416309A
公开(公告)日：1995-05-16
申请号：US12134
申请日：1993-02-01
申请人： Mitsuo Oshiba
发明人： Mitsuo Oshiba
IPC分类号： G11B7/00 , G11B7/0033 , G11B7/005 , G11B20/14 , G11B7/08
CPC分类号： G11B20/1403 , G11B7/0033
摘要： In compliance with a variation in the speed of relative movement between a reciprocating optical recording medium and an optical head, an information regenerating apparatus produces a bit clock precisely and regenerate information correctly. To achieve this purpose, in this apparatus, information regenerating light receiving elements produce preceding and succeeding signals with a time difference between them. Based on a preceding one of the signals, a pulse spacing sampling circuit, a pulse multiple detecting circuit, a memory circuit, and a reference period calculating circuit produce a reference period. Based on a succeeding signal, a circuit for generating a signal to be demodulated produces a demodulated signal. Based on the reference period and a synchronizing signal, a demodulating circuit uses the bit clock generated by the clock generating circuit to demodulate the data carried on the signal to be demodulated.
摘要翻译：根据往复光学记录介质和光学头之间的相对移动速度的变化，信息再生装置精确地产生位时钟并正确地再生信息。为了实现这一目的，在该装置中，再生光接收元件的信息产生具有时间差的前后信号。基于先前的信号之一，脉冲间隔采样电路，脉冲多路检测电路，存储电路和参考周期计算电路产生参考周期。基于后续信号，用于产生待解调信号的电路产生解调信号。基于参考周期和同步信号，解调电路使用由时钟发生电路产生的比特时钟来对被解调信号承载的数据进行解调。

7. 发明授权

US5229985A Data recording/reproducing apparatus capable of detecting data recording state 失效
标题翻译：能够检测数据记录状态的数据记录/重放装置
公开(公告)号：US5229985A
公开(公告)日：1993-07-20
申请号：US703363
申请日：1991-05-21
申请人： Mitsuo Oshiba
发明人： Mitsuo Oshiba
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/0055 , G11B19/04 , G11B27/36
CPC分类号： G11B19/04 , G11B27/36 , G11B7/004
摘要： A data recording/reproducing apparatus for recording/reproducing data by use of a recording medium comprises a detector for receiving light beams from a predetermined portion of the recording medium and outputting a corresponding reproduction signal. A first measuring unit measures a time period during which an average level of the reproduction signal output from the detector exceeds a reference value, and outputs a first measurement signal. A second measuring unit measures the number of times, at which an interval of pits recorded on the recording medium meets a predetermined modulation rule, by use of the reproduction signal, and outputs a second measurement signal. A discriminating unit discriminates the recording state of the predetermined portion of the recording medium, on the basis of the first and second measurement signals.
摘要翻译：用于通过使用记录介质来记录/再现数据的数据记录/再现装置包括用于接收来自记录介质的预定部分的光束并输出相应再现信号的检测器。第一测量单元测量从检测器输出的再现信号的平均电平超过参考值的时间段，并输出第一测量信号。第二测量单元通过使用再现信号来测量在记录介质上记录的凹坑的间隔满足预定调制规则的次数，并输出第二测量信号。识别单元基于第一和第二测量信号来识别记录介质的预定部分的记录状态。

8. 发明授权

US5568458A Optical information recording and reproducing apparatus in which reproducing light is used to perform servo control having no offset at recording mode 失效
标题翻译：光记录再现装置，其中使用再现光进行在记录模式下没有偏移的伺服控制
公开(公告)号：US5568458A
公开(公告)日：1996-10-22
申请号：US100160
申请日：1993-08-02
申请人： Naoaki Tani , Takumi Sugaya , Takao Rokutan , Mitsuo Oshiba , Takefumi Sakurada
发明人： Naoaki Tani , Takumi Sugaya , Takao Rokutan , Mitsuo Oshiba , Takefumi Sakurada
IPC分类号： G11B7/00 , G11B7/0033 , G11B7/004 , G11B7/0045 , G11B7/09 , G11B7/125 , G11B7/135
CPC分类号： G11B7/094 , G11B7/0033
摘要： An optical information recording and reproducing apparatus comprising a first and a second laser diodes for generating recording light and reproducing light, respectively. A light emission condition of the second laser diode is always controlled to the constant or predetermined light intensity which is adequate for reproduction, by an APC circuit. The first laser diode is controlled by a light-intensity control circuit so as to be brought to the intensity of light emission lower than a level which forms a pit on an optical card, in a reproducing mode other than a period of time of a recording mode. Under a focus and tracking control due to the reproducing light, a value of a focus error and a value of a tracking error due to the recording light at a low level are detected and sampled/held as a focus offset and a tracking offset. During a period of time of the recoding mode, focus control and tracking control due to the reproducing light are performed so that these offsets are brought to zero.
摘要翻译：一种光信息记录和再现装置，包括分别产生记录光和再现光的第一和第二激光二极管。通过APC电路将第二激光二极管的发光条件总是控制为适于再生的恒定或预定的光强度。第一激光二极管由光强度控制电路控制，以除了记录时间段之外的再现模式中，被引入低于在光卡上形成凹坑的电平的发光强度模式。在由于再现光引起的聚焦和跟踪控制下，由于记录光在低电平处的聚焦误差和跟踪误差的值被检测和采样/保持为聚焦偏移和跟踪偏移。在再编码模式的时间段期间，执行由于再现光引起的聚焦控制和跟踪控制，使得这些偏移为零。

9. 发明授权

US5398225A Optical information recording/regenerating apparatus and track scanning method for an optical information recording/regenerating apparatus 失效
标题翻译：用于光学信息记录/再生设备的光学信息记录/再生设备和轨迹扫描方法
公开(公告)号：US5398225A
公开(公告)日：1995-03-14
申请号：US103101
申请日：1993-08-09
申请人： Takumi Sugaya , Takao Rokutan , Mitsuo Oshiba , Takefumi Sakurada , Naoaki Tani
发明人： Takumi Sugaya , Takao Rokutan , Mitsuo Oshiba , Takefumi Sakurada , Naoaki Tani
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/085 , G11B7/14 , G11B20/18
CPC分类号： G11B7/14 , G11B20/1833
摘要： An optical information recording/regenerating apparatus includes an optical head for irradiating a regeneration light spot to a plurality of tracks on an optical recording medium simultaneously via an objective optical system. A regenerating arrangement is provided for simultaneously scanning the plurality of tracks to which the optical head has irradiated the regeneration light spot, and then reading recorded information from the plurality of tracks. An error-correcting arrangement is provided which receives the recorded information read by the regenerating arrangement for performing error correction using the error-correcting codes for the plurality of tracks. An error-correction result memory arrangement is provided for storing results that indicate whether or not the error-correcting arrangement succeeded in error correction. A control arrangement is responsive to results stored in the error-correction result memory which indicate that error correction has not succeeded for the information regenerated from at least one track among the information regenerated from the plurality of simultaneously-scanned tracks. A driving device drives the regeneration light spot and the optical recording medium relatively to each other. The control arrangement controls the drive device so that the track for which the error correction has not succeeded will be included in a scanning range.
摘要翻译：一种光学信息记录/再生装置包括：用于经由物镜光学系统同时向光学记录介质上的多个轨道照射再生光点的光学头。提供再生装置，用于同时扫描光头已经照射再生光斑的多个轨道，然后从多个轨道读取记录的信息。提供一种错误校正装置，其接收由再生装置读取的记录信息，以使用多个轨道的纠错码执行纠错。提供纠错结果存储装置，用于存储指示纠错装置是否成功进行纠错的结果。控制装置响应存储在纠错结果存储器中的结果，其指示对于从多个同时扫描的轨道再生的信息中的至少一个轨道再生的信息，错误校正尚未成功。驱动装置相对于彼此驱动再生光点和光记录介质。控制装置控制驱动装置，使得误差校正尚未成功的轨道将被包括在扫描范围内。

10. 发明授权

US5293568A Track-address judging method 失效
标题翻译：轨道地址判断方法
公开(公告)号：US5293568A
公开(公告)日：1994-03-08
申请号：US904036
申请日：1992-06-25
申请人： Mitsuo Oshiba , Kazutake Sugawara
发明人： Mitsuo Oshiba , Kazutake Sugawara
IPC分类号： G11B7/085 , G11B7/14 , G11B27/30 , G11B17/22
CPC分类号： G11B27/3027 , G11B7/08505 , G11B7/14
摘要： The present invention reads out track addresses written onto ID sections of a recording medium, for example, from five, tracks of the plurality of tracks read out simultaneously, to execute demodulation and error correction. In case where the addresses are multiple-written onto the ID sections, the optical spot judges the track address of the desired track on the basis of the plurality of read-out track addresses until the optical spot passes through the remaining track address. Further, in case where there is only a single one of the track addresses written on said ID sections, the track addresses are read out one by one, are demodulated and are error-corrected. The track address of the desired track is judged on the basis of the plurality of read-out track addresses, prior to the fact that the optical spot enters an information recording area.
摘要翻译：本发明读出写入记录介质的ID部分的轨道地址，例如，从五个同时读出的多个磁道的轨道，执行解调和纠错。在地址被多次写入ID部分的情况下，光点基于多个读出的磁道地址来判定所需磁道的磁道地址，直到光点通过剩余的磁道地址为止。此外，在仅存在写入所述ID部分的轨道地址中的单个轨道地址的情况下，一个接一个地读出轨道地址，被解调并被纠错。在光点进入信息记录区域之前，基于多个读出的磁道地址来判断所需磁道的磁道地址。

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