专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明专利

JP2008287836A Servo signal recording apparatus 有权
标题翻译：伺服信号记录装置
公开(公告)号：JP2008287836A
公开(公告)日：2008-11-27
申请号：JP2007134038
申请日：2007-05-21
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KAWAKAMI SHINJI , KAWAKITA TOSHIO
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： PROBLEM TO BE SOLVED: To provide a servo signal recording apparatus which writes a servo signal to conduct a tracking servo at high speed and very accurately, onto a magnetic tape.
SOLUTION: The apparatus is provided with: a tape fluctuation measuring portion 5 which measures a position fluctuation in a width direction of the magnetic tape 3 and outputs a tape fluctuation information; a signal processor 20 which generates the servo signal including the tape fluctuation information to be outputted from the tape fluctuation measuring portion 5; and a servo signal recording head 4 which records the servo signal generated in the signal processor 20 onto the magnetic tape 3. Prior to a timing when the servo signal is recorded in a prescribed position of the magnetic tape 3 by the servo signal recording head 4, the tape fluctuation measuring portion 5 measures the tape fluctuation in the prescribed position and records the servo signal including the tape fluctuation information.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种伺服信号记录装置，其将伺服信号写入高速且非常准确地进行跟踪伺服的磁带上。解决方案：该装置设有：带状波动测量部分5，其测量磁带3的宽度方向上的位置波动并输出波段波动信息; 信号处理器20，其产生包括要从带变动测量部分5输出的带变动信息的伺服信号; 以及伺服信号记录头4，其将在信号处理器20中产生的伺服信号记录在磁带3上。在通过伺服信号记录头4将伺服信号记录在磁带3的规定位置的定时之前胶带变形测量部分5测量规定位置的胶带波动并记录包括胶带变形信息的伺服信号。版权所有（C）2009，JPO＆INPIT

32. 发明专利

JP2008217976A Head tracking servo method, recording and playback device, magnetic tape, and magnetic tape cartridge 有权
标题翻译：头跟踪服务方法，记录和回放装置，磁带和磁带盒
公开(公告)号：JP2008217976A
公开(公告)日：2008-09-18
申请号：JP2008099513
申请日：2008-04-07
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： KAWAKAMI SHINJI , KAWAKITA TOSHIO
IPC分类号： G11B5/584 , G11B23/30
CPC分类号： G11B5/584
摘要： PROBLEM TO BE SOLVED: To provide a head tracking servo method which allows a magnetic head to quickly and accurately follow a recording track, even when a recording track width is narrowed and the tape speed is increased.
SOLUTION: A magnetic tape cartridge 23 is used which comprises a cartridge 20 and a magnetic tape 21 and in which LTM frequency information obtained by frequency conversion of tape variance information being information of variations of positions in a magnetic tape width direction with respect to respective positions in a lengthwise direction of the magnetic tape 21 preliminarily obtained by measurement is recorded, and the LTM frequency information is read out from the magnetic tape cartridge 23, and a servo signal recorded in a servo track is read out by the magnetic head, and information of a head position relative to the magnetic tape 21 is extracted to calculate an off-track amount, and control data of the magnetic head is calculated from the LTM frequency information and the off-track amount, and the magnetic head is moved in the width direction of the magnetic tape on the basis of the calculated control data.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使当记录磁道宽度变窄并且磁带速度增加时，提供允许磁头快速且准确地跟随记录磁道的磁头跟踪伺服方法。解决方案：使用包括盒20和磁带21的磁带盒23，其中通过磁带方差信息的频率转换获得的LTM频率信息是关于磁带宽度方向上的位置变化的信息，记录通过测量预先获得的磁带21的长度方向上的各位置，从磁带盒23读出LTM频率信息，并且由磁头读出记录在伺服磁道中的伺服信号，并且提取相对于磁带21的磁头位置的信息以计算偏离磁道量，并且根据LTM频率信息和偏离磁道量计算磁头的控制数据，并且磁头移动根据计算出的控制数据在磁带的宽度方向上。版权所有（C）2008，JPO＆INPIT

33. 发明专利

JP2007279023A Spacing measuring instrument and measuring method 有权
标题翻译：间隔测量仪器和测量方法
公开(公告)号：JP2007279023A
公开(公告)日：2007-10-25
申请号：JP2007054625
申请日：2007-03-05
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： FUJITA MASAO , KAWAKITA TOSHIO , KAWAKAMI SHINJI , KUZE SADAMU
IPC分类号： G01B11/14
摘要： PROBLEM TO BE SOLVED: To provide a spacing measuring instrument and measuring method capable of measuring, for example, 10nm or smaller of fine spacings. SOLUTION: This spacing measuring instrument, made to oppose a transparent member 4 on a surface of a measured object T to emit a light toward the measured object T via the transparent member 4, and for calculating the spacing between the surface of the measured object T and the transparent member 4, based on the intensity of interference light, generated in the opposed portion of the surface of the measured object T to the transparent member 4, is provided with a light source 1 for emitting the light; a modulating means 2 for modulating the intensity of the emitted light by a prescribed frequency of modulated wave; a sensing means 7 for the light intensity of the reference light into an electrical signal; and a synchronization detection means 8 for synchronization-detecting the electrical signal, by using the modulated wave as the reference wave. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够测量例如10nm或更小的精细间隔的间隔测量仪器和测量方法。＆lt; P＆gt;解决方案：该间隔测量仪器与被测量物体T的表面上的透明构件4相对，经由透明构件4朝测量对象T发射光，并且用于计算测量对象T和透明构件4基于在测量对象T的表面的相对部分中产生的干涉光的强度到透明构件4设置有用于发射光的光源1; 调制装置2，用于调制经调制波的规定频率的发射光的强度; 用于将参考光的光强度转换为电信号的感测装置7; 以及通过使用调制波作为参考波来同步检测电信号的同步检测装置8。版权所有（C）2008，JPO＆INPIT

34. 发明专利

JP2007250119A Magnetic recording medium, magnetic recording/reproducing device, and magnetic recording method 审中-公开
标题翻译：磁记录介质，磁记录/再现装置和磁记录方法
公开(公告)号：JP2007250119A
公开(公告)日：2007-09-27
申请号：JP2006074365
申请日：2006-03-17
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： FUNABASHI MASAYA , TANAKA KENJI , KAWAKAMI SHINJI , KUZE SADAMU
IPC分类号： G11B5/09 , G11B5/02 , G11B5/65
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium wherein the number of errors caused by the change of a boundary face between a magnetic layer and a lower layer is small.
SOLUTION: The magnetic recording medium usable for the magnetic recording/reproducing device equipped with a waveform equalizing part capable of modulating input long wavelength data to a plurality of short wavelength data and having a magnetic layer 2 arranged on a nonmagnetic layer 1 is constructed in such a manner that the thickness of the magnetic layer 2 is larger than half of the shortest recording wavelength of data output from the waveform equalizing part and smaller than 4 times.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种磁记录介质，其中由磁层和下层之间的边界面的变化引起的误差数量小。解决方案：可用于具有能够将输入长波长数据调制为多个短波长数据并具有布置在非磁性层1上的磁性层2的波形均衡部分的磁记录/再现装置的磁记录介质是以使得磁性层2的厚度大于从波形均衡部输出的数据的最短记录波长的一半小于4倍的方式构成。版权所有（C）2007，JPO＆INPIT

35. 发明专利

JP2003257011A MAGNETIC RECORDING MEDIUM 审中-公开
公开(公告)号：JP2003257011A
公开(公告)日：2003-09-12
申请号：JP2002052298
申请日：2002-02-27
申请人： HITACHI MAXELL
发明人： ITO FUMIO , KAWAKAMI SHINJI , MIURA MOTOYA
IPC分类号： B24B1/00 , G11B5/70 , G11B5/735 , G11B5/738
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium capable of improving an output, suppressing output fluctuation, improving the wear resistance of an MR head, and correcting head staining. SOLUTION: This magnetic recording medium is constituted in such a manner that at least one substrate coating layer and a magnetic layer are formed in this order on one surface of a nonmagnetic support, and a backcoat layer is formed on the opposite surface. In a state where the magnetic recording medium is brought into contact, at a winding angle 9°, with a cylindrical test piece which has a dimater 5 mm and center ling average surface roughness Ra set to 10 nm±1 nm, and slid at a relative speed 4.0 m/sec., and traveling tension 0.92 N (0.094 kgf) (1/2 inch tape), a dynamic friction coefficient μ for the test piece is 0.01≤μ≤0.035. COPYRIGHT: (C)2003,JPO

36. 发明专利

JPH0757412A MAGNETIC DISK 失效
公开(公告)号：JPH0757412A
公开(公告)日：1995-03-03
申请号：JP22523493
申请日：1993-08-18
申请人： HITACHI MAXELL
发明人： KAWAKAMI SHINJI , UMEBAYASHI NOBUHIRO
IPC分类号： G11B5/82 , C09D5/23 , G11B5/73 , G11B13/04 , G11B21/10
摘要： PURPOSE:To obtain sufficient reproduced outputs in spite of an increase in capacity by specifying the recording wavelength of the magnetic disk, the thickness of a magnetic layer and the ratio of the height of the build-ups at the peripheral edges of the respective recesses within recess groups which irregularly reflect incident light and the recording wavelength to specific values or below. CONSTITUTION:The magnetic disk 1 is provided with the many recess groups 3 on the surface of the magnetic layer 2 and regularly reflects light when the light is made incident on the surface of the layer 2. The disk irregularly reflects the light and optical tracking servo is performed when the light is made incident on the recess groups 3. The recording wavelength of the disk 1 is specified to

37. 发明专利

JPH0729137A MAGNETIC DISC 失效
公开(公告)号：JPH0729137A
公开(公告)日：1995-01-31
申请号：JP19691593
申请日：1993-07-13
申请人： HITACHI MAXELL
发明人： KAWAKAMI SHINJI , UMEBAYASHI NOBUHIRO
IPC分类号： G11B5/596 , C09D5/23 , G11B5/73 , G11B5/82 , G11B13/04 , G11B21/10
摘要： PURPOSE:To obtain a reproducing output necessary for a magnetic disc which has the track density increased to have a large capacity. CONSTITUTION:A magnetic layer including magnetic powders is provided on a substrate. Many recesses 3 are formed a predetermined distance on the surface of the magnetic layer to irregularly reflect the incident light along tracks where information signals are recorded. When the recording wavelength lambda is not larger than 2mum and the thickness of the magnetic layer is not larger than 0.5mum, the ratio of the height H of a projecting peripheral edge of each recessed part 4 in the recess 3 and the recording wavelength lambda satisfies H/lambda=0.025 or smaller. In this constitution, the decrease of reproducing outputs caused by the projecting peripheral edge of the recessed part in the recess is restricted.

38. 发明专利

JPH05151566A WORKING METHOD AND DEVICE FOR MAGNETIC TAPE SURFACE FINISH 失效
公开(公告)号：JPH05151566A
公开(公告)日：1993-06-18
申请号：JP33991791
申请日：1991-11-27
申请人： HITACHI MAXELL
发明人： KAWAKAMI SHINJI
IPC分类号： G11B5/78 , G11B5/84
摘要： PURPOSE:To efficiently and uniformly finish working the surface of a magnetic tape by vibrating the edge of an impulse member at a preset and prescribed vibrating frequency and impulse contacting the surface of a magnetic tape which generates dropouts. CONSTITUTION:The surface of a tape 4 is finished by impulse contacting and running it over an edge 18 of an impulse member 17 consisting of the adjacent surface which contacts the tape within the angle of larger than zero and less than 180 degrees. Prior to the tape 4 contacting the edge 18 of the member 17, a recording and a reproducing are performed by impulse contacting a recording head 10 and a reproducing head 11 to the tape 4 successively so as to detect the size of the dropout of the reproduced signals from the reproducing head 11. In accordance with the size of the dropout, the edge 18 of the member 17 is vibrated with a prescribed vibrating frequency, the edge is impulse contacted to the surface of the tape 4 on which a dropout is generated, a projection or a foreign object located on the surface of the tape 4 are efficiently eliminated and re-adhesion of these removed foreign objects to the surface of the tape 4 is prevented.

39. 发明专利

JPH04254941A MAGNETIC TAPE DEVICE 失效
公开(公告)号：JPH04254941A
公开(公告)日：1992-09-10
申请号：JP2943591
申请日：1991-01-29
申请人： HITACHI MAXELL
发明人： KAWAKAMI SHINJI
IPC分类号： G11B15/43 , G11B15/61
摘要： PURPOSE:To obtain an excellent output regardless of the thickness of a magnetic tape by controlling the tension of the tape so that a value obtained by subtracting the tape thickness from the position on the back face of the magnetic tape can be within a set range. CONSTITUTION:Displacement obtained by subtracting the thickness of a magnetic tape 4 from the position on the back face of the tape is stored in a controller CR22 so that the displacement can be within the preset range, and when the displacement becomes outside the preset range, an adjusting lever 23 connected to the CR22 is oscillated. The lever 23 is connected with a brake band 24 the base end of which is fixed and wound with a supply roll 5 via a spring 25, and by oscillating the lever with the instruction of the CR22, the tension of the tape 4 can be increased or decreased to adjust the tension. Even when the thickness of the tape 4 is different, the position on the back face is detected with a photosensor 21, the tension in the running is adjusted so that the displacement on the back face can be within the set range and spacing loss can be prevented from occurring between the tape 4 and a recording and reproducing head 2 near the contact with the head 2, and thus, the excellent and stabilized reproducing output can be obtained all time.

40. 发明专利

JPH01122019A SIGNALED MAGNETIC TAPE 失效
公开(公告)号：JPH01122019A
公开(公告)日：1989-05-15
申请号：JP28129387
申请日：1987-11-06
申请人： HITACHI MAXELL
发明人： KAWAKAMI SHINJI , KUSUMOTO MASAHIDE , KISHIMOTO MIKIO
IPC分类号： G11B5/86 , C09D5/23 , C09D7/12 , G11B5/62 , G11B5/706
摘要： PURPOSE:To increase the magnetic transferral efficiency at high density record ing time and to increase a reproducing output by impressing a transferal bias magnetic field from the vertical direction on the magnetic tape whose residual magnetic flux density in the thickness direction is specified. CONSTITUTION:The tape contg. the magnetic powder with a hexagonal ferrite (example: Ba ferrite) particle as the main body and having the magnetic layer whose residual magnetic flux density in the tape thickness direction is >=750G is used as a soft tape. This tape is then superposed on a master tape, the bias magnetic field for transfer is impressed, the signal of the master tape is recorded by transferring it and the title tape is manufactured. Now, the transfer bias magnetic field transfers by impressing in the direction within + or -15 deg. for the vertical direction of the soft tape. The residual magnetic flux density in the longitudinal face inner direction of the title tape is preferably at

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式