公开(公告)号：US5666347A

公开(公告)日：1997-09-09

申请号：US343362

申请日：1994-11-22

申请人： Tadao Yoshida ,  Katsuaki Tsurushima

发明人： Tadao Yoshida ,  Katsuaki Tsurushima

IPC分类号： G11B17/028 ,  G11B23/00 ,  G11B3/70

CPC分类号： G11B17/0282 ,  G11B23/0035

摘要： A plate made of a magnetic material is secured to an optical disk so that it closes a central hole formed in a disk substrate. An optical disk chucking mechanism for chucking the optical disk to a disk table attracts the magnetic plate by the magnet to cause a platen to abut to the disk substrate and a tapered portion to abut to the inner side of the central hole so that the optical disk is restricted in position and is held. The optical disk and optical disk chucking mechanism restrict the loading position of the optical disk on the disk table independently of the mounting position of the magnetic plate on the disk substrate.

摘要翻译： 由磁性材料制成的板被固定在光盘上，从而封闭形成在盘基片上的中心孔。 用于将光盘夹持到盘台的光盘夹紧机构通过磁体吸引磁板，使压板与盘基板抵接，锥形部分抵靠中心孔的内侧，使得光盘 被限制在被拘留。 光盘和光盘夹持机构将磁盘的装载位置限制在盘片基板上的磁盘的安装位置上。

公开(公告)号：US5222099A

公开(公告)日：1993-06-22

申请号：US821990

申请日：1992-01-16

申请人： Katsuya Hori ,  Tadao Yoshida ,  Wataru Yamatani ,  Eiichiro Morinaga

发明人： Katsuya Hori ,  Tadao Yoshida ,  Wataru Yamatani ,  Eiichiro Morinaga

IPC分类号： G01S1/00 ,  H04B1/707

CPC分类号： H04B1/7085 ,  G01S19/24 ,  G01S19/30

摘要： A spread spectrum signal receiving apparatus comprising: a radio frequency processing circuit for converting a spread spectrum signal into an intermediate frequency signal; a binary encoder for encoding the intermediate frequency signal; a pseudo-random noise code generator; a code driver for controlling the phase and the chip speed of the output of the code generator; a first multiplier for multiplying the binary signal by the output of the code generator; a numerical controlled oscillator for outputting first and second carrier signals; second and third multipliers for multiplying the output signal of the first multiplier respectively by the first and second carrier signals; first and second low-pass filters supplied with the output signals of the second and third multipliers respectively; and a microcomputer having functions to produce signals for controlling the numerical controlled oscillator, and functions to produce signals for controlling the code driver.

公开(公告)号：US5003521A

公开(公告)日：1991-03-26

申请号：US243036

申请日：1988-08-18

申请人： Tadao Yoshida ,  Kazuhiko Fujiie ,  Ryo Ando

发明人： Tadao Yoshida ,  Kazuhiko Fujiie ,  Ryo Ando

IPC分类号： G11B11/10 ,  G11B7/00 ,  G11B7/004 ,  G11B7/09 ,  G11B11/105 ,  G11B19/02 ,  G11B19/12

CPC分类号： G11B7/0941 ,  G11B19/02 ,  G11B19/12 ,  G11B2020/10879 ,  G11B2220/2525 ,  G11B2220/2537

摘要： An objective lens (3) of an optical pick up head (10) is moved in a direction of the optical axis, and a signal level of the output detected by the optical pick up head (10) before and after a focussed state is compared with predetermined reference levels (Vref.sub.1) and (Vref.sub.2) level comparators (32) and (33), In order to discriminate the reproduction-only disk from the recording disk by utilizing a difference in the reflection factor on the recording surface on the optical disk (20). Operation of the optical disk recording/reproducing apparatus is automatically switched over depending upon the kind of the optical disk.

公开(公告)号：US4975898A

公开(公告)日：1990-12-04

申请号：US243035

申请日：1988-08-18

申请人： Tadao Yoshida

发明人： Tadao Yoshida

IPC分类号： G06F12/14 ,  G06F21/24 ,  G11B7/00 ,  G11B7/004 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/30 ,  G11B11/10 ,  G11B11/105 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12

CPC分类号： G11B20/00108 ,  G11B20/00086 ,  G11B20/00659 ,  G11B20/00688 ,  G11B20/10 ,  G11B7/00745 ,  G11B2020/1259

摘要： A method and apparatus for preventing copying of an optical disk. A software program and the basic data necessary for executing the program, as well as an erasing program are nonrewritably recorded in advance on a predetermined region of the disk. The erasing program attempts to erase the non-rewritable portion, which has no effect on the original disk, but will erase that portion of a disk which is copied. Thus, if the software program and the basic data for executing the program are copied without authorization, the copy disk is prevented from being used.

摘要翻译： PCT No.PCT / JP87 / 01005 Sec。 371日期1988年8月18日 102（e）日期1988年8月18日PCT Filted 1987年12月21日PCT公布。 公开号WO88 / 05203 日期：1988年7月14日。一种用于防止光盘复制的方法和装置。 执行程序所需的软件程序和基本数据以及擦除程序在磁盘的预定区域预先被无限制地记录。 擦除程序尝试擦除不可重写部分，这对原始磁盘没有影响，但会擦除被复制的磁盘部分。 因此，如果软件程序和用于执行程序的基本数据未经授权复制，则防止复制盘被使用。

公开(公告)号：US4932016A

公开(公告)日：1990-06-05

申请号：US206857

申请日：1988-06-02

申请人： Tadao Yoshida ,  Kazuhiko Fujiie ,  Ryo Ando

发明人： Tadao Yoshida ,  Kazuhiko Fujiie ,  Ryo Ando

IPC分类号： G11B27/00 ,  G11B19/04 ,  G11B20/10 ,  G11B27/034 ,  G11B27/036 ,  G11B27/10 ,  G11B27/11 ,  G11B27/19 ,  G11B27/22 ,  G11B27/24 ,  G11B27/30 ,  G11B27/32 ,  G11B27/34

CPC分类号： G11B27/24 ,  G11B19/04 ,  G11B20/10527 ,  G11B27/036 ,  G11B27/105 ,  G11B27/11 ,  G11B27/22 ,  G11B27/3063 ,  G11B27/329 ,  G11B27/34 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2545 ,  G11B2220/65 ,  G11B27/034 ,  G11B27/3027

摘要： Apparatus and method of recording and reproducing data using a disk to record musical performance data. Data related to the music and start times for each piece of music are recorded onto a table of contents section of the disk and the operation is controlled according to this data. Therefore, wasteful reproduction operation is avoided when there exists non-recorded areas between pieces of music or when a piece of music shorter than the initial piece of music is recorded overlapped thereon, enabling the music to be favorably reproduced. In carrying out the (sound) recording operation, furthermore, the non-recorded areas can quickly be found.

公开(公告)号：US4914193A

公开(公告)日：1990-04-03

申请号：US274619

申请日：1988-11-22

申请人： Tadao Yoshida ,  Iwao Ohmori

发明人： Tadao Yoshida ,  Iwao Ohmori

IPC分类号： C07H23/00

CPC分类号： C07H23/00 ,  Y02P20/55

摘要： Novel triorganostannyl derivatives of deoxynucleosides or deoxynucleotides of the general formula: ##STR1## wherein R.sup.1 is an alkyl or aryl group, R.sup.2 is a protecting group, R.sup.3 is a protecting group, B is a base residue which may have a protecting group, and n is zero or a positive integer and their amine salts are provided. They are prepared by reacting a deoxynucleoside or deoxynucleotide with either a triorganotin amide or a triorgano(alkoxy)stannane and may be useful as intermediates for the preparation of oligodeoxynecleotides.

摘要翻译： 脱氧核苷或脱氧核苷酸的新型三有机基甲硅烷基衍生物具有以下通式：其中R1是烷基或芳基，R2是保护基，R3是保护基，B是可以具有保护基的碱残基，n 为零或正整数，并提供它们的胺盐。 它们通过使脱氧核苷或脱氧核苷酸与三有机锡酰胺或三有机（烷氧基）锡烷反应制备，并且可用作制备寡脱氧核苷酸的中间体。

公开(公告)号：US4530073A

公开(公告)日：1985-07-16

申请号：US409022

申请日：1982-08-17

申请人： Teruaki Higashihara ,  Tadao Yoshida ,  Hideo Kawachi ,  Chiaki Nonaka

发明人： Teruaki Higashihara ,  Tadao Yoshida ,  Hideo Kawachi ,  Chiaki Nonaka

IPC分类号： G11B20/10 ,  G11B7/005 ,  G11B17/00 ,  G11B27/00 ,  G11B7/00 ,  H04N5/76

CPC分类号： G11B17/005 ,  G11B27/005 ,  G11B7/005 ,  G11B2220/20 ,  G11B2220/2545

摘要： In an apparatus for reproducing digitized signals recorded in successive, substantially circular tracks on a rotated disc by means of a pickup of the optical type which, in a normal scanning state, scans the tracks in succession; a first or prepare-to-play command signal causes the pickup to reproduce the digitized signals for a predetermined interval corresponding to more than one of the tracks on the disc starting from a desired position on such one track and the digitized signals reproduced in that predetermined interval are stored, desirably in a random access memory (RAM), whereupon a standby state of the pickup is established in which the pickup traces a closed loop on the rotated disc within a range corresponding to the previously mentioned predetermined interval. Upon reception of a second or play command signal, the pickup is released from its standby state at the completion of the tracing of the closed loop during which the play command signal occurred and the normal scanning state of the pickup is reestablished. Further, in response to the second or play command signal, the stored digitized signals are read out from the RAM and transmitted, starting with the signals corresponding to the desired position irrespective of the rotational position of the disc at the time of the play command signal, and the digitized signals reproduced by the pickup on the reestablishment of its normal scanning state and, more particularly, commencing with the digitized signals following the predetermined interval, are sequentially stored in the RAM and then sequentially read out and transmitted therefrom.

摘要翻译： 在用于再现通过光学类型的拾取器在旋转的光盘上记录在连续的基本圆形轨道中的数字化信号的装置中，其在正常扫描状态下连续地扫描轨道; 第一个或准备播放的命​​令信号使得拾取器在对应于该盘上的多个轨道的预定间隔上再现数字化信号，从该一个磁道上的期望位置开始，并以该预定的频率再现的数字化信号 间隔被存储在期望地在随机存取存储器（RAM）中，由此建立拾取器的待机状态，其中拾取器在与先前提到的预定间隔相对应的范围内在旋转盘上追踪闭环。 在接收到第二或播放命令信号时，在播放命令信号发生的闭环跟踪完成并且重新建立拾取器的正常扫描状态的完成时，拾取器被从其待机状态释放。 此外，响应于第二或播放命令信号，存储的数字化信号从RAM读出，并从与所需位置相对应的信号开始发送，而与播放命令信号时的盘的旋转位置无关 ，并且在重新建立其正常扫描状态时由拾取器再现的数字化信号，更具体地，从预定间隔开始的数字化信号开始，依次存储在RAM中，然后顺序地读出并从其发送。

公开(公告)号：US4322788A

公开(公告)日：1982-03-30

申请号：US147579

申请日：1980-05-08

申请人： Tadao Yoshida

发明人： Tadao Yoshida

IPC分类号： H02M7/5375 ,  H02M7/538 ,  H02M3/335

CPC分类号： H02M1/36

摘要： A control circuit for an inverter includes a DC voltage source having first and second terminals, an input transformer having a primary winding, a pair of secondary windings and a magnetic core, an output transformer having a primary winding, a secondary winding and a feedback winding, first and second transistors each having a control electrode, the main current paths of which are connected, through the primary winding of the output transformer, between the first and second terminals of the DC voltage source and the control electrodes of which are connected to the pair of secondary windings of the input transformer, coupling circuit for connecting the primary winding of the input transformer to the feedback winding of the output transformer, a starting circuit for putting one of the first and second transistors in its conductive state when the DC voltage source is operated, and a control circuit including at least a shorting winding provided in connection with the magnetic core of the input transformer so as to cut off the first and second transistors during OFF operation of the DC voltage source.

摘要翻译： 用于逆变器的控制电路包括具有第一和第二端子的DC电压源，具有初级绕组，一对次级绕组和磁芯的输入变压器，具有初级绕组，次级绕组和反馈绕组的输出变压器 第一和第二晶体管各自具有控制电极，其主电流通过输出变压器的初级绕组连接在DC电压源的第一和第二端子之间，其控制电极连接到 输入变压器的一对次级绕组，用于将输入变压器的初级绕组连接到输出变压器的反馈绕组的耦合电路，用于将第一和第二晶体管中的一个晶体管置于其导通状态的启动电路，当DC电压源 以及控制电路，该控制电路至少包括与该磁芯相连接设置的短路绕组 输入变压器，以便在DC电压源的OFF操作期间切断第一和第二晶体管。

公开(公告)号：US4313065A

公开(公告)日：1982-01-26

申请号：US104666

申请日：1979-12-17

申请人： Tadao Yoshida ,  Tadao Suzuki

发明人： Tadao Yoshida ,  Tadao Suzuki

IPC分类号： H03F3/18 ,  H03K5/02 ,  H03K9/08 ,  H03K17/0416 ,  H03K17/08 ,  H03K17/16 ,  H03K17/567 ,  H03K17/687

CPC分类号： H03K17/04163 ,  H03K5/023 ,  H03K9/08

摘要： A switching circuit with MOS field effect transistors includes a DC voltage source having first and second terminals, first and second MOS field effect transistors each having gate, source, drain electrodes and a substrate, a circuit for connecting the source and drain electrodes of the first and second field MOS effect transistors in push-pull amplifying relation between the first and second terminals of the DC voltage source, a signal input circuit for supplying a signal to drive the gate electrodes of the first and second MOS field effect transistors, an output circuit including an inductor and a load connected in series between the connection point of the first and second MOS field effect transistors and a reference point so that charging and discharging currents of the inductor flow alternately through the source and drain electrodes of each of the first and second MOS field effect transistors when the respective MOS field effect transistors are in their conductive state, and resistors connected between the source electrodes and the substrates of the first and second MOS field effect transistors such that the discharging current of the inductor is prevented from flowing through the respective substrates of the first and second MOS field effect transistors.

摘要翻译： 具有MOS场效应晶体管的开关电路包括具有第一和第二端子的DC电压源，每个具有栅极，源极，漏极和基板的第一和第二MOS场效应晶体管，用于连接第一和第二端子的源极和漏极的电路 以及直流电压源的第一和第二端子之间的推挽放大关系中的第二场MOS效应晶体管，用于提供信号以驱动第一和第二MOS场效应晶体管的栅电极的信号输入电路，输出电路 包括在第一和第二MOS场效应晶体管的连接点和参考点之间串联连接的电感器和负载，使得电感器的充电和放电电流交替地流过第一和第二MOS场效应晶体管的源极和漏极电极 MOS场效应晶体管，当各MOS场效应晶体管处于导通状态时， 连接在源电极和第一和第二MOS场效应晶体管的衬底之间的电极，使得防止电感器的放电电流流过第一和第二MOS场效应晶体管的各个衬底。

公开(公告)号：US4249136A

公开(公告)日：1981-02-03

申请号：US41325

申请日：1979-05-22

申请人： Tadao Suzuki ,  Tadao Yoshida

发明人： Tadao Suzuki ,  Tadao Yoshida

IPC分类号： H03F1/30 ,  H03F1/32 ,  H03F3/20 ,  H03F3/217 ,  H03K7/08

CPC分类号： H03K7/08 ,  H03F1/32 ,  H03F3/217 ,  H03F2200/03 ,  H03F2200/351

摘要： A PWM (pulse width modulated) signal power amplifier includes an input terminal supplied with a PWM signal directly, an integrator, a zero-cross switch and a pulse amplifier. A negative feedback circuit is provided between the input of the integrator and the output of the pulse signal amplifier so as to provide a low distortion in spite of the voltage fluctuations in the operating voltage to the pulse amplifier.

摘要翻译： PWM（脉宽调制）信号功率放大器包括直接提供PWM信号的输入端，积分器，过零开关和脉冲放大器。 在积分器的输入和脉冲信号放大器的输出之间提供负反馈电路，以便尽管脉冲放大器的工作电压中的电压波动而提供低失真。