公开(公告)号：US6067064A

公开(公告)日：2000-05-23

申请号：US773227

申请日：1996-12-23

申请人： Tsutomu Furuhashi ,  Hiroyuki Nitta ,  Naruhiko Kasai ,  Yoshihisa Ooishi ,  Hiroshi Kurihara ,  Takeshi Maeda ,  Atsuhiko Higa

发明人： Tsutomu Furuhashi ,  Hiroyuki Nitta ,  Naruhiko Kasai ,  Yoshihisa Ooishi ,  Hiroshi Kurihara ,  Takeshi Maeda ,  Atsuhiko Higa

IPC分类号： G02F1/133 ,  G09G3/36 ,  H04N5/66

CPC分类号： G09G3/3648 ,  G09G2310/0232 ,  G09G2340/0471 ,  G09G3/3611 ,  G09G3/3674

摘要： A liquid crystal display system is provided with a driving circuit which corrects the display position in a vertical direction to obtain an excellent display area even when the total vertical line number is short. According to the driving circuit, by switching the output alternating signal GM input to a scan driver 701-1 in a scan driving circuit 104, a selection voltage Vgon is reflected to all the output terminals of the scan driver 701-1 to switch plural lines at the same time and perform a write-in operation. In a scan driver 701-2 and subsequent scan drivers in the scan driving circuit 104, an FLM signal is input to successively reflect the selection voltage Vgon to the output terminals thereof and successively select the line, thereby performing a write-in operation.

摘要翻译： 液晶显示系统具有驱动电路，其校正垂直方向上的显示位置，以获得优异的显示区域，即使总垂直线数短。 根据驱动电路，通过将输出交替信号GM输入切换到扫描驱动电路104中的扫描驱动器701-1，选择电压Vgon被反射到扫描驱动器701-1的所有输出端，以切换多条线 同时执行写入操作。 在扫描驱动电路104中的扫描驱动器701-2和随后的扫描驱动器中，输入FLM信号以连续地将选择电压Vgon反映到其输出端，并连续选择该行，从而执行写入操作。

公开(公告)号：US5657308A

公开(公告)日：1997-08-12

申请号：US557319

申请日：1995-11-14

申请人： Takeshi Maeda ,  Atsushi Saito ,  Hiroshi Ide

发明人： Takeshi Maeda ,  Atsushi Saito ,  Hiroshi Ide

IPC分类号： G11B7/004 ,  G11B7/013 ,  G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B11/105 ,  G11B20/14 ,  G11B7/00

CPC分类号： B82Y10/00 ,  G11B11/10502 ,  G11B11/10545 ,  G11B11/10584 ,  G11B7/004 ,  G11B7/0943 ,  G11B7/133 ,  G11B7/1365 ,  G11B20/1496 ,  G11B7/013 ,  G11B7/13 ,  G11B7/14 ,  G11B7/24088

摘要： In an information recording/reproducing apparatus constructed of: a buffer for storing therein consecutive recording data in a unit of two dimensional conversion; a coding device for converting the consecutive recording data into a two-dimensional data arrangement arranged by "n" lines and "m" columns corresponding to said unit of data; a recording device for subdividing said two-dimensional data arrangement arranged by "n" lines and "m" columns so as to be read out, and for controlling "m" pieces of light sources in accordance with these data series; and an optical apparatus for converging luminous fluxes from said "m" pieces of light sources so as to form "m" pieces of spots on a disk plane, the recording data is recorded on the disk plane as an optically distringuishable pit group having two-dimensionally extended areas arranged by "n" lines and "m" columns. During a reproducing operation, the reflected light is detected by "m" pieces of detectors; "m" columns of one-dimensional data series are generated from the reflected light detected by these detectors in a generator; and also consecutive data is reproduced from the two dimensional data arranged by "n" lines and "m" columns in a decoder.

摘要翻译： 一种信息记录/再现装置，由以下部分构成：用于以二维转换为单位在其中存储连续的记录数据的缓冲器; 编码装置，用于将连续的记录数据转换为由对应于所述数据单元的“n”行和“m”列排列的二维数据排列; 用于细分由“n”行和“m”列布置的所述二维数据排列以便被读出的记录装置，并且用于根据这些数据序列控制“m”个光源; 以及用于会聚来自所述“m”个光源的光通量以便在盘平面上形成“m”个点的光学装置，所述记录数据被记录在盘平面上，作为具有二维图形的光学可区分凹坑组， 由“n”行和“m”列排列的三维延伸区域。 在再现操作期间，由“m”个检测器检测反射光; 从发生器中由这些检测器检测到的反射光产生“m”列的一维数据序列; 并且从解码器中由“n”行和“m”列排列的二维数据再现连续的数据。

公开(公告)号：US5642343A

公开(公告)日：1997-06-24

申请号：US87777

申请日：1993-07-09

申请人： Tsuyoshi Toda ,  Kazuo Shigematsu ,  Seiichi Mita ,  Toshimitsu Kaku ,  Takeshi Maeda ,  Fumiyoshi Kirino ,  Hiroshi Ide ,  Atsushi Saito

发明人： Tsuyoshi Toda ,  Kazuo Shigematsu ,  Seiichi Mita ,  Toshimitsu Kaku ,  Takeshi Maeda ,  Fumiyoshi Kirino ,  Hiroshi Ide ,  Atsushi Saito

IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/125 ,  G11B11/105 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B7/00

CPC分类号： G11B11/10506 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/10009 ,  G11B20/10212 ,  G11B20/1816 ,  G11B7/0045 ,  G11B7/126 ,  G11B7/24085 ,  G11B11/10517 ,  G11B20/1258

摘要： An optical method for recording, reproducing, and erasing a digital signal of a mark length recording system onto/from an optical recording medium such as an optical disc or the like eliminates a fluctuation of the edge position of the reproduction signal due to heat interference between pits, thereby reducing a fluctuation of the edge position due to a fluctuation of external environmental conditions. For this purpose, there are proposed the following methods: 1) the shape of the recording pulse waveform is controlled, 2) the density at which data is recorded to the disc is variably set in accordance with the disc position, 3) a test recording is executed prior to recording user data, and the like. With these methods, a superhigh density optical recording can be realized.

摘要翻译： PCT No.PCT / JP92 / 01460 Sec。 371日期：1993年7月9日 102（e）日期1993年7月9日PCT 1991年11月10日PCT PCT。 公开号WO93 / 10527 日期：1993年5月27日用于记录，再现和擦除标记长度记录系统的数字信号到诸如光盘等的光学记录介质上的光学方法消除了由于再现信号的边缘位置的波动 以加热凹坑之间的干扰，从而减少由于外部环境条件的波动引起的边缘位置的波动。 为此，提出了以下方法：1）记录脉冲波形的形状被控制，2）根据光盘位置可变地设置数据记录到盘的密度，3）测试记录 在记录用户数据之前执行等。 利用这些方法，可以实现超高密度光学记录。

公开(公告)号：US5625388A

公开(公告)日：1997-04-29

申请号：US126766

申请日：1993-09-27

申请人： Takeshi Maeda ,  Masahiko Takahashi

发明人： Takeshi Maeda ,  Masahiko Takahashi

IPC分类号： G11B7/013 ,  G11B11/105 ,  G01D9/00

CPC分类号： G11B7/24085 ,  G11B11/10519 ,  G11B11/10528 ,  G11B11/10543

摘要： A recording mark having width (disk radius direction) larger than length (disk rotation direction) is formed by using the light intensity modulation method. The recording mark is ring-shaped. The ring part differs in optical characteristic from a part surrounded by the ring part. In order to form a ring-shaped mark, laser light having predetermined intensity is continuously radiated onto the recording medium. By modulating the intensity of the laser light, information is overwritten. The ring-shaped mark is set to have a width based upon the intensity of radiated laser light and the characteristic of the recording film.

摘要翻译： 通过使用光强调制方法形成宽度（盘半径方向）大于长度（盘旋转方向）的记录标记。 录音标记是环形的。 环形部分的光学特性与由环形部分包围的部分不同。 为了形成环状标记，将具有预定强度的激光连续照射到记录介质上。 通过调制激光的强度，信息被覆盖。 环形标记被设定为具有基于照射激光的强度和记录膜的特性的宽度。

公开(公告)号：US5590111A

公开(公告)日：1996-12-31

申请号：US91003

申请日：1993-07-13

申请人： Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroshi Ide ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Tsuyoshi Toda

发明人： Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroshi Ide ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu ,  Tsuyoshi Toda

IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/125 ,  G11B11/105 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B7/00 ,  G11B3/90 ,  G11B5/09

CPC分类号： G11B7/126 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/10009 ,  G11B20/10212 ,  G11B20/1816 ,  G11B7/0045 ,  G11B7/1267 ,  G11B11/10506 ,  G11B11/10508 ,  G11B20/1258 ,  G11B7/24085

摘要： In a write control method on an optical recording, at least one shift amount selected from the defocus amount of a laser beam on a recording medium, the shift amount of a recording position on a recording track and the shift amount of laser power during recording is controlled such that the selected amount falls within a predetermined range. Subsequently, a trial signal is trially recorded at a plurality of trial zones on the recording medium by using a laser power value as a parameter. The recorded trial signal is read and a difference .DELTA.V between center levels of a highest density waveform and a lowest density waveform is detected. In connection with each trial zone, the laser power value when a reading trial signal which makes the difference .DELTA.V minimum is recorded is defined as an optimum recording power value. Regular data is recorded at a predetermined storage area on the recording medium by using an optimum laser power value determined in connection with a trial zone closest to the predetermined storage area.

摘要翻译： 在光学记录中的写入控制方法中，从记录介质上的激光束的散焦量，记录轨道上的记录位置的偏移量和记录期间的激光功率的移动量选择的至少一个偏移量是 被控制使得所选择的量落在预定范围内。 随后，通过使用激光功率值作为参数，在记录介质上的多个试验区上试用信号。 读取记录的试验信号，并检测最高密度波形的中心水平和最低密度波形之间的差ΔTA。 结合每个试验区域，当记录使DELTA V最小值的读取试验信号被记录时的激光功率值被定义为最佳记录功率值。 通过使用与最接近预定存储区域的试验区域确定的最佳激光功率值，将正常数据记录在记录介质上的预定存储区域。

公开(公告)号：US5457666A

公开(公告)日：1995-10-10

申请号：US114062

申请日：1993-08-31

申请人： Tsuyoshi Toda ,  Hiroshi Ide ,  Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroyuki Tsuchinaga ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu

发明人： Tsuyoshi Toda ,  Hiroshi Ide ,  Fumiyoshi Kirino ,  Takeshi Maeda ,  Hiroyuki Tsuchinaga ,  Toshimitsu Kaku ,  Seiichi Mita ,  Kazuo Shigematsu

IPC分类号： G11B7/00 ,  G11B7/0045 ,  G11B7/0055 ,  G11B7/006 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105 ,  G11B7/24

CPC分类号： G11B7/126 ,  G11B11/10506 ,  G11B11/1053 ,  G11B7/0045 ,  G11B7/006

摘要： A magneto-optical disk recording control method using the mark length recording method wherein the marks and gap regions between marks are recorded on the surface of the disk by maintaining a constant temperature distribution during the recording. The laser is driven to a non-recording level in gap regions between marks that exceed a base recording level used for reproduction of the marks. When a mark is recorded, the laser power is increased to a recording power level and after the mark has been recorded, the laser power level is reduced to the base power level, followed by being raised to the gap recording level. Control of the laser is performed by superposing a plurality of pulse trains that are synchronized with respect to a clock having a cycle T. The pulse trains are derived from the code train to be recorded and have pulses with a duration that is an integral multiple of (1/2)T. If the pulse width of the recording code train exceeds 2T, then the laser is controlled to reach a first power level in accordance with pulses of a first pulse train, be reduced to the gap recording level and then raised to a second power level in accordance with a second recording pulse train to maintain the temperature distribution constant during the recording of the mark. For the recording of longer marks, the laser is controlled to vary between the second power level and the gap recording level.

摘要翻译： 一种使用标记长度记录方法的磁光盘记录控制方法，其中通过在记录期间保持恒定的温度分布将标记之间的标记和间隙区域记录在盘的表面上。 在超过用于再现标记的基本记录水平的标记之间的间隙区域中激光被驱动到非记录水平。 当记录标记时，激光功率增加到记录功率水平，并且在记录标记之后，激光功率水平降低到基本功率水平，然后升高到间隙记录水平。 通过叠加相对于具有周期T的时钟同步的多个脉冲串来执行激光的控制。脉冲序列是从要被记录的代码序列导出的，具有持续时间为整数倍的脉冲 （1/2）T。 如果记录代码串的脉冲宽度超过2T，则根据第一脉冲序列的脉冲将激光器控制到达到第一功率电平，减小到间隙记录电平，然后依次升高到第二功率电平 具有第二记录脉冲串，以在记录记录期间保持温度分布恒定。 为了记录更长的标记，激光器被控制在第二功率电平和间隙记录电平之间变化。

公开(公告)号：US5214629A

公开(公告)日：1993-05-25

申请号：US484409

申请日：1990-02-26

申请人： Hitoshi Watanabe ,  Takeshi Maeda

发明人： Hitoshi Watanabe ,  Takeshi Maeda

IPC分类号： G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B19/20

CPC分类号： G11B19/20 ,  G11B7/00745 ,  G11B7/08529 ,  G11B7/08541 ,  G11B7/0938

摘要： An optical disc for a sample servo type optical disc system. Servo areas disposed periodically on each of tracks of the optical disc are sequentially offset relative to those on the adjacent tracks as viewed in the radial direction by a predetermined distance. An apparatus used for signal read-out from the optical disc comprises a circuit for detecting a servo signal originating in servo pits from a detection signal output from a photodetector, a circuit for generating a clock signal synchronized with the servo signal, a counter for outputting a count value representative of the counted clocks at the timing of the servo signal, and a circuit for generating a light spot velocity signal from the count value.

摘要翻译： 一种用于样品伺服型光盘系统的光盘。 周期性地设置在光盘的每个轨道上的伺服区域相对于在径向方向上观察的相邻轨道上的轨迹顺序偏移预定距离。 用于从光盘读出信号的装置包括用于从光电检测器输出的检测信号中检测源自伺服凹坑的伺服信号的电路，用于产生与伺服信号同步的时钟信号的电路，用于输出的计数器 表示伺服信号的定时的计数时钟的计数值，以及从该计数值生成光点速度信号的电路。

公开(公告)号：US5109374A

公开(公告)日：1992-04-28

申请号：US406519

申请日：1989-09-13

申请人： Yoshito Tsunoda ,  Hiroshi Yasuoka ,  Takeshi Maeda

发明人： Yoshito Tsunoda ,  Hiroshi Yasuoka ,  Takeshi Maeda

IPC分类号： G11B11/10 ,  G11B7/00 ,  G11B7/0025 ,  G11B7/09 ,  G11B7/24 ,  G11B11/105

CPC分类号： G11B11/10584 ,  G11B11/10552 ,  G11B11/10556 ,  G11B11/10576 ,  G11B7/0025 ,  G11B7/24 ,  G11B7/24003

摘要： An optical memory device includes a cylindrically-shaped optical information recording medium and at least one optical head disposed around the information recording medium for irradiating the information recording medium with a light spot for recording or reproduction of information. The optical head has light spot moving means incorporated therein for the irradiation position of the light spot. The recording or reproduction of information is achieved by causing the light spot moving means to perform tracking control so that the light spot follows a desired track in an area within a range of movement of the light spot by the light spot moving means (or an infromation recording zone) in a state in which the relative positional relationship between the optical head and the cylindrically-shaped information recording medium in the direction parallel to the direction of the rotation axis of the information recording medium is fixed, with the optical head being not moved. The device can be constructed so that the position of either the optical head or the cylindrically-shaped information recording medium relative to the other in the direction parallel to the direction of the rotation axis of the information recording medium is mechanically moved, thereby making it possible to cahnge the information recording zone in the range of movement of the light spot by the light spot moving means to another information recording zone.

公开(公告)号：US5084860A

公开(公告)日：1992-01-28

申请号：US551025

申请日：1990-07-11

申请人： Takeshi Maeda ,  Yoshito Tsunoda ,  Kazuo Shigematsu ,  Toshimitsu Kaku

发明人： Takeshi Maeda ,  Yoshito Tsunoda ,  Kazuo Shigematsu ,  Toshimitsu Kaku

IPC分类号： G11B7/007 ,  G11B7/09 ,  G11B7/26 ,  G11B11/105

CPC分类号： G11B7/261 ,  G11B11/10565 ,  G11B11/10578 ,  G11B11/10582 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/094 ,  G11B7/24082

摘要： A record carrier having a disc-shaped substrate and a recording layer for optically writing information therein is disclosed which includes a guide groove extended in the rotational direction of the record carrier so that a plurality of revolutions of the guide groove are spaced apart from each other in radial directions of the record carrier, and a pit pattern provided between adjacent guide grooves, at positions arranged at intervals in the above rotational direction, for detecting the deviation of a light spot from the center line between adjacent guide grooves. The recording/reproducing operation for this record carrier is performed in such a manner that the first tracking error signal is detected from diffracted light from the guide groove, the second tracking error signal is detected from the pit pattern, and information is recorded in and reproduced from a land formed between adjacent guide grooves in a state that a tracking operation is performed using the first and second tracking error signals. The second tracking error signal detected from the pit pattern is not affected by the tilting of the record carrier and the movement of the light spot. When a tracking signal obtained by adding the first and second tracking error signals to each other, is used in a closed-loop tracking system, a stable tracking operation can be performed. The polarity of the pit pattern is reversed on every track, and hence a polarity pit having a depth of .lambda./4 (where .lambda. indicates the wavelength of a reproducing light beam) is provided in the record carrier, to reverse the polarity of the second tracking signal on every track on the basis of a signal from the polarity pit.

公开(公告)号：US5073880A

公开(公告)日：1991-12-17

申请号：US285584

申请日：1988-12-16

申请人： Takeshi Maeda ,  Yoshito Tsunoda

发明人： Takeshi Maeda ,  Yoshito Tsunoda

IPC分类号： G11B7/09 ,  G11B11/105 ,  G11B21/10

CPC分类号： G11B7/0938 ,  G11B11/10565 ,  G11B11/10578 ,  G11B21/106

摘要： Data recording and/or reproduction on or from a recording medium on which tracking signal detection marks are intermittently provided along each track in a pattern wobbling alternately across the track center line with a very small lateral displacement therefrom, wherein data recording area is defined between the tracking signal detection mark. A servo control system for controlling a write/read light spot so as to follow the track with the aid of a tracking signal obtained by detecting the tracking signal detection marks is provided with a low-pass filter circuit having a cut-off frequency lower than the frequency at which the tracking signal detection marks are detected. A data is recorded or reproduced on or from the recording areas of the recording medium while following the track under the control of the servo system. A blank area where data recording is inhibited is provided between the data recording area and the tracking signal detecting mark (prepit) to suppress interference to the data. A particular access prepit pattern which allows track addresses to be at least approximately detected upon passing of the light spot over the track of the recording medium is previously provided together with synchronizing marks in a synchronizing area.