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1. 发明授权

US5260836A Apparatus for reproducing digital and analog audio signals 失效
标题翻译：用于再现数字和模拟音频信号的装置
公开(公告)号：US5260836A
公开(公告)日：1993-11-09
申请号：US618906
申请日：1990-11-28
申请人： Horoaki Yada , Yutaka Soda , Keisuke Fujiwara , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
发明人： Horoaki Yada , Yutaka Soda , Keisuke Fujiwara , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
IPC分类号： G11B5/008 , G11B5/02 , G11B20/00 , G11B5/09 , G11B15/12
CPC分类号： G11B5/00878 , G11B20/00 , G11B5/02
摘要： Apparatus is provided for reproducing either M channels of digital audio signals recorded in longitudinal tracks on a record medium or an analog audio signal recorded in one or two stereo tracks. M heads are used to reproduce the M channels of digital audio signals and N of those heads (N.ltoreq.M) are used to reproduce the analog audio signal. The reproduced digital or analog audio signals are multiplexed and digitized. When digital audio signals are reproduced, the digitized multiplexed signals are digitally processed and then converted to analog form. When analog audio signals are reproduced, the digitized multiplexed signals are summed such that signals reproduced by the N heads are combined to form a digital representation of the recorded analog audio signal. The summed signals then are converted to analog form to recover the original analog audio signal.

2. 发明授权

US5313342A Analog/digital compatible reproducing system 失效
标题翻译：模拟/数字兼容再现系统
公开(公告)号：US5313342A
公开(公告)日：1994-05-17
申请号：US979483
申请日：1992-11-20
申请人： Yutaka Soda , Keisuke Fujiwara , Hiroaki Yada , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
发明人： Yutaka Soda , Keisuke Fujiwara , Hiroaki Yada , Satoru Seko , Munekatsu Fukuyama , Tetsuo Sekiya
IPC分类号： G11B5/008 , G11B5/48 , G11B15/12 , G11B15/32 , G11B23/087 , G11B23/28 , G11B5/265
CPC分类号： G11B23/087 , G11B15/125 , G11B15/32 , G11B23/28 , G11B5/00878 , G11B5/4893
摘要： An analog/digital compatible reproducing system is disclosed, particularly a stationary head system using a digital recorded magnetic tape having a plurality of n, digital data recorded tracks. An analog recorded magnetic tape has a first analog recorded track and a second analog recorded track between which a guardband of a certain width is provided. Signals are reproduced from the digital recorded magnetic tape by driving n reproducing magnetic head elements respectively corresponding to the n digital data recorded tracks. The analog recorded magnetic tape is reproduced by driving a plurality of m reproducing magnetic head elements of said n reproducing, magnetic head elements, corresponding to the first and second recorded tracks so that common outputs can be produced from the m reproducing magnetic head elements. There is also disclosed a tape cassette used in such system.
摘要翻译：公开了一种模拟/数字兼容再现系统，特别是使用具有多个n个数字数据记录磁道的数字记录磁带的固定磁头系统。模拟记录磁带具有第一模拟记录磁道和第二模拟记录磁道，在其之间提供一定宽度的保护带。通过驱动分别对应于n个数字数据记录轨道的n个再现磁头元件，从数字记录磁带再现信号。通过驱动对应于第一和第二记录磁道的所述n个再现磁头元件的多个m个再现磁头元件来再现模拟记录磁带，使得可以从m个再现磁头元件产生公共输出。还公开了在这种系统中使用的磁带盒。

3. 发明授权

US4757410A Magnetoresistance effect for short and long wavelength recordings 失效
标题翻译：短波和长波长记录的磁阻效应
公开(公告)号：US4757410A
公开(公告)日：1988-07-12
申请号：US793089
申请日：1985-10-30
申请人： Satoru Seko , Yutaka Soda , Hiroyuki Uchida , Tetsuo Sekiya
发明人： Satoru Seko , Yutaka Soda , Hiroyuki Uchida , Tetsuo Sekiya
IPC分类号： G11B5/39 , G11B5/48 , G11B5/127
CPC分类号： G11B5/3925 , G11B5/3977 , G11B5/488
摘要： A multi-channel magnetoresistance effect type magnetic head has a short wavelength region magnetic head element and a relatively longer wavelength region magnetic head element. The two head elements are provided on a magnetic substrate with each having a magnetic circuit containing a magnetic gap facing a surface adjacent to and across from a magnetic recording medium. Each magnetic circuit has a discontinuity portion with a bridging magnetoresistance effect sensing element to magnetically connect the discontinuity portion. The longer wavelength magnetic head discontinuity portion is spaced at a greater distance from the adjacent surface than is the discontinuity portion of the shorter wavelength magnetic head element.
摘要翻译：多通道磁阻效应型磁头具有短波长区磁头元件和较长波长区磁头元件。两个头部元件设置在磁性基板上，每个磁性元件具有磁路，该磁路包含面向与磁记录介质相邻并与之相对的表面的磁隙。每个磁路具有具有桥接磁阻效应传感元件的不连续部分以磁连接不连续部分。较长波长的磁头不连续部分与相对于较短波长的磁头元件的不连续部分相距更远的距离。

4. 发明授权

US08416480B2 Hologram reproducing apparatus, hologram reproducing method, and phase modulating element 失效
标题翻译：全息图再现装置，全息图再现方法和相位调制元件
公开(公告)号：US08416480B2
公开(公告)日：2013-04-09
申请号：US12032536
申请日：2008-02-15
申请人： Tomiji Tanaka , Masaaki Hara , Kazutatsu Tokuyama , Satoru Seko , Shinji Yamada , Hitoshi Okada
发明人： Tomiji Tanaka , Masaaki Hara , Kazutatsu Tokuyama , Satoru Seko , Shinji Yamada , Hitoshi Okada
IPC分类号： G03H1/26 , G03H1/10
CPC分类号： G11B7/1362 , G03H1/22 , G03H1/265 , G03H2001/0441 , G03H2210/562 , G11B7/0065 , G11B7/1369
摘要： A hologram reproducing apparatus includes a first reference light path leading laser light from a laser light source so that a hologram recording medium is irradiated with first reference light; a diffracted light path leading diffracted light, generated from the hologram recording medium by irradiation with the first reference light, to a light receiving element having a plurality of pixels; and a second reference light path leading second reference light, having the same polarization direction as that of the diffracted light, from the laser light source to the light receiving element. The second reference light path is provided with a phase modulating element so that the phase difference between the diffracted light and the second reference light in a light receiving surface of the light receiving element is adjusted within a predetermined range.
摘要翻译：全息图再现装置包括：第一参考光路，其引导来自激光光源的激光，使得全息图记录介质用第一参考光照射; 通过照射第一参考光从全息图记录介质产生的衍射光的衍射光路到具有多个像素的光接收元件; 以及第二参考光路，其将具有与衍射光的偏振方向相同的偏振方向的第二参考光从激光光源引导到光接收元件。第二参考光路设置有相位调制元件，使得光接收元件的光接收表面中的衍射光和第二参考光之间的相位差被调节在预定范围内。

5. 发明授权

US08000205B2 Recording apparatus and recording method 失效
标题翻译：记录装置和记录方法
公开(公告)号：US08000205B2
公开(公告)日：2011-08-16
申请号：US12184870
申请日：2008-08-01
申请人： Tatsuo Hori , Satoru Seko
发明人： Tatsuo Hori , Satoru Seko
IPC分类号： G11B7/00
CPC分类号： G11B7/0065 , G03H1/18 , G03H1/182 , G11B7/00772 , G11B7/00781 , G11B7/083 , G11B7/1275 , G11B7/268
摘要： A recording apparatus for performing recording on a hologram recording medium includes a first light source configured to output first laser light having a first wavelength; a second light source configured to output second laser light having a second wavelength differing from the first wavelength; a recorder configured to perform data recording in units of hologram pages on the data recording layer of the hologram recording medium in such a manner that a recording data sequence is converted into a data pattern in units of hologram pages, the signal light is generated by performing space light modulation on the first laser light on the basis of the data pattern; a reflected light detector configured to irradiate the hologram recording medium with the second laser light; a position controller configured to perform position control; and a recording controller configured to perform control on the recorder.
摘要翻译：用于在全息图记录介质上执行记录的记录装置包括：第一光源，被配置为输出具有第一波长的第一激光; 第二光源，被配置为输出具有与所述第一波长不同的第二波长的第二激光; 配置为以全息图记录介质的数据记录层上的全息图单元为单位执行数据记录的记录器，使得记录数据序列以全息页为单位被转换成数据图形，通过执行信号光生成信号光基于数据模式对第一激光进行空间光调制; 反射光检测器，被配置为用全息图记录介质照射第二激光; 位置控制器，被配置为执行位置控制; 以及记录控制器，被配置为对所述记录器执行控制。

6. 发明授权

US5196970A Magnetic disc apparatus 失效
标题翻译：磁碟设备
公开(公告)号：US5196970A
公开(公告)日：1993-03-23
申请号：US427260
申请日：1989-10-25
申请人： Satoru Seko , Yoshiyuki Kunito , Takayasu Muto , Tomoki Kawabata
发明人： Satoru Seko , Yoshiyuki Kunito , Takayasu Muto , Tomoki Kawabata
IPC分类号： G11B5/55
CPC分类号： G11B5/5556
摘要： A magnetic disc apparatus having at least one magnetic disc having a plurality of track groups thereon at different distances from the center of the disc each of which groups comprises plural data tracks having plural data sectors, each of the track groups having a different number of the data sectors therein in such a manner that the outer track group has more data sectors, a transducer head for reading and writing data signals from and on the data tracks, an actuator for positioning the transducer head over a desired one of the data tracks, a position sensor for sensing the position of the transducer head relative to the magnetic disc, and for generating at least two periodic position signals each of which is out of phase with each other, and a controller for controlling the actuator according to the periodic position signals so that the transducer head is positioned over the desired one of the data tracks.

7. 发明授权

US6144516A Head displacement measuring method and apparatus and data recording/reproducing method and apparatus 失效
标题翻译：头位移测量方法和装置以及数据记录/再现方法和装置
公开(公告)号：US6144516A
公开(公告)日：2000-11-07
申请号：US828388
申请日：1997-03-28
申请人： Toru Takeda , Satoru Seko , Takehisa Ishida
发明人： Toru Takeda , Satoru Seko , Takehisa Ishida
IPC分类号： G11B5/012 , G11B5/55 , G11B5/596 , G11B20/10 , G11B27/36 , G11B21/02
CPC分类号： G11B5/59633 , G11B27/36 , G11B5/012 , G11B5/5534 , G11B20/10009 , G11B2220/20
摘要： In a head displacement measuring method, prior to actual data recording or data reproduction, either one of the recording head and the reproducing head is wobbled, and the test data is recorded in the disk-shaped recording medium by the recording head. Then, the test data is reproduced from the test data by the reproducing head, and displacement between the recording head and the reproducing head is detected on the basis of the reproduced test data. Thus, the displacement may be detected more easily with higher precision than with the conventional optical detecting method.
摘要翻译：在头位移测量方法中，在实际数据记录或数据再现之前，记录头和再现头中的任一个是摆动的，并且测试数据被记录头记录在盘形记录介质中。然后，通过再现头从测试数据再现测试数据，并且基于再现的测试数据检测记录头和再现头之间的位移。因此，与常规光学检测方法相比，可以以更高的精度更容易地检测位移。

8. 发明授权

US5905705A Disc device having eccentricity measurement and clock correction 失效
标题翻译：具有偏心测量和时钟校正的光盘设备
公开(公告)号：US5905705A
公开(公告)日：1999-05-18
申请号：US821329
申请日：1997-03-21
申请人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
发明人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
IPC分类号： G11B5/48 , G11B7/095 , G11B21/10 , G11B27/30
CPC分类号： G11B5/4826 , G11B21/106 , G11B7/0953
摘要： A magnetic or optical disc device which can correctly follow the eccentricity of an eccentrically chucked disk and which can immediately follow the eccentricity of the new disk face when there is a changeover of the disc being accessed operates with a disc having data tracks provided with uniformly spaced clock marks for providing a timing standard and includes a reproduction circuit for reproducing data from the disc, a clock sampling circuit for extracting a first clock signal output by the reproduction circuit, an eccentricity magnitude memory section for storing a signal corresponding to the eccentricity of the data tracks with respect to the axis of rotation of the disc; a clock correction section. The device further includes a voltage control oscillator operating according to the signal corresponding to the eccentricity for causing a second clock signal output by the voltage control oscillator to follow the first clock signal by changing the phase or the frequency of the second clock signal and an eccentricity magnitude measuring section for measuring the signal corresponding to the eccentricity from the first clock signal and the output signal of the reproduction circuit and supplying it to the eccentricity magnitude memory section.
摘要翻译：一种磁盘或光盘装置，其可以正确地跟随偏心卡盘的偏心，并且当存在正在被访问的盘的切换时，可以立即跟随新的盘面的偏心，操作具有数据轨道的盘，该盘具有均匀间隔的数据轨道用于提供定时标准的时钟标记，并且包括用于再现来自盘的数据的再现电路，用于提取由再现电路输出的第一时钟信号的时钟采样电路;偏心量值存储部分，用于存储对应于相对于盘的旋转轴的数据轨道; 时钟校正部。该装置还包括电压控制振荡器，该电压控制振荡器根据对应于偏心率的信号进行工作，以使由压控振荡器输出的第二时钟信号通过改变第二时钟信号的相位或频率来跟随第一时钟信号，幅度测量部分，用于测量来自第一时钟信号的对应于偏心率的信号和再现电路的输出信号，并将其提供给偏心量值存储部分。

9. 发明授权

US5745455A Disc device having eccentricity measurement and clock correction 失效
公开(公告)号：US5745455A
公开(公告)日：1998-04-28
申请号：US821330
申请日：1997-03-21
申请人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
发明人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
IPC分类号： G11B5/48 , G11B7/095 , G11B21/10 , G11B27/30
CPC分类号： G11B5/4826 , G11B21/106 , G11B7/0953
摘要： A magnetic or optical disc device which can correctly follow the eccentricity of an eccentrically chucked disk and which can immediately follow the eccentricity of the new disk face when there is a changeover of the disc being accessed operates with a disc having data tracks provided with uniformly spaced clock marks for providing a timing standard and includes a reproduction circuit for reproducing data from the disc, a clock sampling circuit for extracting a first clock signal output by the reproduction circuit, an eccentricity magnitude memory section for storing a signal corresponding to the eccentricity of the data tracks with respect to the axis of rotation of the disc; a clock correction section. The device further includes a voltage control oscillator operating according to the signal corresponding to the eccentricity for causing a second clock signal output by the voltage control oscillator to follow the first clock signal by changing the phase or the frequency of the second clock signal and an eccentricity magnitude measuring section for measuring the signal corresponding to the eccentricity from the first clock signal and the output signal of the reproduction circuit and supplying it to the eccentricity magnitude memory section.

10. 发明授权

US5615191A Disc device having eccentricity measurement and clock correction 失效
标题翻译：具有偏心测量和时钟校正的光盘设备
公开(公告)号：US5615191A
公开(公告)日：1997-03-25
申请号：US555542
申请日：1995-11-09
申请人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
发明人： Toru Takeda , Satoru Seko , Hideaki Ishioka , Itaru Tomisaki
IPC分类号： G11B5/48 , G11B7/095 , G11B21/10 , G11B27/30
CPC分类号： G11B5/4826 , G11B21/106 , G11B7/0953
摘要： A magnetic or optical disc device which can correctly follow the eccentricity of an eccentrically chucked disk and Which can immediately follow the eccentricity of the new disk face when there is a changeover of the disc being accessed operates with a disc having data tracks provided with uniformly spaced clock marks for providing a timing standard and includes a reproduction circuit for reproducing data from the disc, a clock sampling circuit for extracting a first clock signal output by the reproduciton circuit, an eccentricity magnitude memory section for storing a signal corresponding to the eccentricity of the data tracks with respect to the axis of rotation of the disc; a clock correction section. The device further includes a voltage control oscillator operating according to the signal corresponding to the eccentricity for causing a second clock signal output by the voltage control oscillator to follow the first clock signal by changing the phase of the second clock signal or the frequency of the second clock signal and an eccentricity magnitude measuring section for measuring the signal corresponding to the eccentricity from the first clock signal and the output signal of the reproduciton circuit and supplying it to the eccentricity magnitude memory section. The eccentricity magnitude measuring section measures the signal corresponding to the eccentricity by calculating the number of tracks which the reproduction head crosses or by using the non-uniformity of spacing observed in a string of clock pulses reproduced from the uniformly spaced clock marks on the disc.
摘要翻译：一种磁盘或光盘装置，其可以正确地跟随偏心卡盘的偏心，并且当存在被访问的盘的切换时，其可以立即跟随新的盘面的偏心，利用具有均匀间隔的数据轨道的盘来操作用于提供定时标准的时钟标记，并且包括用于再现来自盘的数据的再现电路，用于提取再现电路输出的第一时钟信号的时钟采样电路，用于存储对应于相对于盘的旋转轴的数据轨道; 时钟校正部。该装置还包括电压控制振荡器，该电压控制振荡器根据对应于偏心率的信号进行工作，以使由压控振荡器输出的第二时钟信号通过改变第二时钟信号的相位或第二时钟信号的频率来跟随第一时钟信号时钟信号和偏心量值测量部分，用于测量与第一时钟信号和再现电路的输出信号相对应的偏心度的信号并将其提供给偏心量值存储器部分。偏心量值测量部通过计算再现头交叉的轨道的数量或通过使用从盘上均匀间隔的时钟标记再现的一串时钟脉冲中观察到的间隔的不均匀性来测量与偏心度相对应的信号。

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