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1. 发明专利

JPS6320701A METHOD FOR DETECTING DEGREE OF DETERIORATION OF FILE STORAGE DEVICE 失效
公开(公告)号：JPS6320701A
公开(公告)日：1988-01-28
申请号：JP16458586
申请日：1986-07-15
申请人： NIPPON TELEGRAPH & TELEPHONE , FUJITSU LTD
发明人： HIRONO TADASHI , NISHIMURA KAZUTOSHI , HAYAKAWA AKIHIRO , MATSUURA MICHIO
IPC分类号： G06F3/06 , G11B5/00 , G11B20/18 , G11B33/10
摘要： PURPOSE:To early detect the degrees of deterioration of a file storage device and a volume to give previous maintenance to them, by storing the statistic information in response to combination of the file storage device and the volume and checking the significance between the storage device and the volume based on the statistic information. CONSTITUTION:The volume processing is carried out by a file storage device 1 and the statistic information on the device 1 is read every time the volume is demounted. Thus the data corresponding to a device Um of a table and a volume Vn set in a statistic information log file 3 are replaced. In such a way, the replacement data on both device and volume stored in the file 3 are read out properly. Then the significance is checked by a significance checking device for the device and the volume. Thus the presence or absence of said significance is decided. If the presence of significance is confirmed, the device is discriminated from the volume and at the same time the information on the degree of deterioration is extracted by a maintenance message output device 6. Then the device and the volume are maintained.

2. 发明专利

JPS62204461A MAGNETIC TAPE LOADING METHOD FOR MAGNETIC TAPE DEVICE 失效
公开(公告)号：JPS62204461A
公开(公告)日：1987-09-09
申请号：JP4708986
申请日：1986-03-04
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUURA MICHIO , NISHIMURA KAZUTOSHI , TANABE TAKANARI
IPC分类号： G11B15/665
摘要： PURPOSE:To complete a tape loading operation even when a loose winding is generated in a magnetic tape, and to regulate the tension of a traveling path, by performing the rewinding operation of the magnetic tape, when a tape tension mechanism detects a tape tension abnormality after the tape loading operation. CONSTITUTION:When the tape tension is not in a normal condition, a load retry is executed. In other words, a control circuit 60 sends an arm close command ADS to arm driving circuits 61 and 62, and makes rotate arm motors 36 and 37, then closing arms 30 and 31. Furthermore, the control circuit 60 supplies a tension giving command to a reel motor driving circuit 63, and makes rotate reel motors 22 and 23 in a reverse direction with each other, and makes pull a magnetic tape 12 between reels 10 and 11, thereby giving the tension on the magnetic tape 12. The control circuit 60, when discriminating the tape loading operations for three times, decides that the tension of the magnetic tape 12 is not regulated by three times of tape load operations, and the loose winding is generated in the magnetic tape 12, then it executes a rewinding routine.

3. 发明专利

JP2007122185A Data storage method and data storage device 审中-公开
标题翻译：数据存储方法和数据存储设备
公开(公告)号：JP2007122185A
公开(公告)日：2007-05-17
申请号：JP2005310406
申请日：2005-10-25
申请人： Fujitsu Ltd , 富士通株式会社
发明人： TAGUCHI MASAKAZU , MATSUURA MICHIO
IPC分类号： G06F3/06
CPC分类号： G11B20/1833 , G06F11/1092
摘要： PROBLEM TO BE SOLVED: To achieve a data storage device for maintaining initial reliability over a long period of time.
SOLUTION: This data storage method comprises: a step for dividing data to be stored into a plurality of divided data; a step for generating parity data corresponding to the divided data; a step for distributing the divided data and the parity data to a plurality of storage units for making those storage units store those data; a step for responding to such a fact that any of those plurality of storage units is made inaccessible, and for restoring the data stored in the inaccessible storage unit before the storage unit is made inaccessible on the basis of the data stored by the residual storage units; a step for dividing the restored data into a plurality of divided restored data; a step for generating the parity data corresponding to the divided restored data; and a step for distributing the divided restored data and the parity data corresponding to the data to the plurality of accessible storage media for making those storage media store those data.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：实现用于在长时间内保持初始可靠性的数据存储装置。解决方案：该数据存储方法包括：将要存储的数据分割成多个分割数据的步骤; 用于产生与分割数据相对应的奇偶校验数据的步骤; 将分割数据和奇偶校验数据分配给多个存储单元以使这些存储单元存储这些数据的步骤; 响应于这样的事实的步骤：使得这些多个存储单元中的任何一个成为不可访问的，并且用于在存储单元根据由剩余存储单元存储的数据不可访问之前恢复存储在不可访问的存储单元中的数据 ; 将恢复的数据分割成多个分割的还原数据的步骤; 用于产生对应于所分割的还原数据的奇偶校验数据的步骤; 以及将分割的还原数据和与数据相对应的奇偶校验数据分配给多个可访问存储介质以使这些存储介质存储这些数据的步骤。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2004253107A Method of manufacturing magneto-optical recording medium, and magneto optical recording medium 审中-公开
公开(公告)号：JP2004253107A
公开(公告)日：2004-09-09
申请号：JP2003118174
申请日：2003-04-23
申请人： Fujitsu Ltd , 富士通株式会社
发明人： MORIBE MINEO , UMADA TAKAHIRO , KAMIMURA TAKUYA , MATSUURA MICHIO
IPC分类号： G11B11/105
摘要： PROBLEM TO BE SOLVED: To provide a front illumination-type magneto-optical recording medium which is provided with: a magnetic part having a land groove of high dimensional accuracy; and a light transmitting protection film being sufficiently thin and disposed on a light incident side of the magnetic part.
SOLUTION: This method of manufacturing a magneto-optical recording medium X1 comprises: a process in which, after a resin material film is formed on a pre-groove forming plane of a stamper, the resin material is cured, and a light transmitting protection film 10 having a pre-groove plane 10a and a flat plane 10b to which a rugged shape of the pre-groove forming plane has been transferred is formed; a process in which an auxiliary substrate is adhered to the flat plane 10b through an adhesive; a process in which the protection film 10 and the stamper are separated; a process in which a material film structure part 20 including a recording and reproducing function part is formed by forming a film of the material on the pre-groove plane 10a of the protecting plane 10; a process in which a substrate S is jointed to the structure part 20 through the adhesive 30; a process in which adhesiveness of the adhesive is reduced; and a process in which the protecting film 10 and the auxiliary substrate are separated.
COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2001023262A WINDING STRUCTURE AND DRIVING CIRCUIT OF MAGNETIC HEAD 失效
公开(公告)号：JP2001023262A
公开(公告)日：2001-01-26
申请号：JP19739399
申请日：1999-07-12
申请人： FUJITSU LTD
发明人： MATSUURA MICHIO
IPC分类号： G11B5/127 , G11B5/02 , G11B5/09 , G11B5/17 , G11B11/105 , H03K17/66
摘要： PROBLEM TO BE SOLVED: To reduce the power consumption of a driving circuit of a magnetic head used for a magnetic field modulated magneto-optical disk device. SOLUTION: A magnetization control signal MAGCH becomes H-level in the case of no magnetizing inverison during the period of the specified number of clock and becomes L-level in the case the magnetizing inverison exists. When the magnetization control signal MAGCH is on the L-level, a high voltage VH is impressed on an intermediate tap of a bifilar winding 31 of the magnetic head through a transistor 39, and since transistors 40, 41 or transistors 42, 43 are turned on in accordance with write data signals DATA, *DATA, the exciting current flows into any one of the windings 31a or 31b. When the magnetization control signal MAGCH is on the H-level, since the transistors 46, 41 or transistors 48, 43 are turned on in accordance with the write data signals DATA, *DATA, the exciting current flows into both of the windings 31a and 31b from the side of low voltage VL.

6. 发明专利

JPH0935415A TRANSIENT SUPPRESSION CIRCUIT 失效
公开(公告)号：JPH0935415A
公开(公告)日：1997-02-07
申请号：JP18190195
申请日：1995-07-18
申请人： FUJITSU LTD
发明人： MATSUURA MICHIO
IPC分类号： G11B20/10 , G11B11/10 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To suppress the transient by confining the head and bottom parts of a reproduced waveform appearing at the output of a capacitor, connected between the stages of an amplifier for amplifying a signal read out from a recording medium having different reproduction level, within a predetermined voltage range. SOLUTION: An amplifier 10 amplifies a polarization angle variation (MO signal) read out from a recording medium having different reproduction level. Output of the amplifier 10 is connected with a butter 11 having a low output impedance. The butter 11 is connected, at the output thereof, with a capacitor C1 having output terminal connected with clamp circuits Qa, Qb for confining the head and bottom parts in the waveform of reproduction signal within a predetermined voltage range. This circuitry suppresses the residual transient of MO signal contained in a reproduction signal read out from a recording medium having different signal reproduction level.

7. 发明专利

JPH05166295A CLOCK GENERATION CIRCUIT 失效
公开(公告)号：JPH05166295A
公开(公告)日：1993-07-02
申请号：JP36121491
申请日：1991-12-13
申请人： COPAL CO LTD , FUJITSU LTD
发明人： MATSUURA MICHIO
IPC分类号： B41J2/44 , G11B19/247 , G11B19/28
摘要： PURPOSE:To perform the frequency-division of non-integer with pure logic circuit configuration. CONSTITUTION:A high speed clock signal HCLK and a low speed clock signal LCLK reduced in speed in the ratio of a prescribed non-integer are generated by a clock generation circuit 1. These clock signals are used for individual driving control reference while holding respectively the relative speed ratio of a pair of a high-speed device 2 and a low speed device 3. This circuit is provided with a non-integer frequency divider circuit 6 containing an upward integer frequency divider 7 operating in the ratio of an integer exceeding the non-integer and a downward integer frequency divider 8 operating in the ratio of the integer falling below the non-integer. The high speed clock signal HCLK is frequency-divided continuously by switching these a pair of the integer frequency dividers 7 and 8 successively and the low speed clock signal LCLK frequency-divided in the ratio of the non-integer viewing averagely is generated.

8. 发明专利

JPH03160627A POSITION ERROR SIGNAL CIRCUIT IN OPTICAL RECORDING DEVICE 失效
公开(公告)号：JPH03160627A
公开(公告)日：1991-07-10
申请号：JP29907089
申请日：1989-11-17
申请人： COPAL CO LTD , FUJITSU LTD
发明人： MATSUURA MICHIO
IPC分类号： G11B7/09
摘要： PURPOSE:To output a position error signal which is not affected by means of the intensity fluctuation of reflected light by respectively current/voltage- converting a pair of signal currents, setting them as logarithmic voltages and differentially processing them. CONSTITUTION:The signal currents I1 and I2 outputted from first and second light-receiving elements are caused to flow in current/voltage logarithmic converters 10 and 11 where diodes having prescribed current/voltage logarithmic conversion characteristics are connected in serial by N-value. Then, a differential amplifier 12 differentially processes voltages V1 and V2 and a position error signal voltage corresponding to a difference ( V) is outputted. The difference V is decided by the relative difference of a light quantity which a pair of light-receiving elements receive and the influence of the energy fluctuation of reflected light is not given. It is preferable that the non-linearity of said signal voltage is compensated by a non-linear compensator 13.

9. 发明专利

JPS63298702A INFORMATION RECORDING METHOD FOR MAGNETIC TAPE DEVICE 失效
公开(公告)号：JPS63298702A
公开(公告)日：1988-12-06
申请号：JP13305987
申请日：1987-05-28
申请人： FUJITSU LTD
发明人： MATSUURA MICHIO
IPC分类号： G11B5/09
摘要： PURPOSE:To attain write of a new data on a magnetic tape with a data recorded thereupon by low recording density in a magnetic tape device recording the data with high recording density by using a suitable magnetic head in accordance with purpose. CONSTITUTION:The title device consists of a 1st write head 5 writing a data onto a magnetic tape 4 at low recording density, a 2nd write head 6 writing a data to the magnetic tape 4 at high recording density, and a read head 7 reading the data written on the magnetic tape 4. The write head 5 records a data on the magnetic tape 4 at a low recording density and erases the old data of the magnetic tape 4 by AC degaussing in erasing the old data of the magnetic tape 4, and recording a data on the magnetic tape 4 at a high recording density, then it is possible for the write head 6 to write a new data on the magnetic tape 4 at a high recording density. Thus, the magnetic tape device writes a data on the magnetic tape 4 by either or the low recording density and the high recording density.

10. 发明专利

JPS63204808A CIRCUIT DIAGNOSTIC SYSTEM 失效
公开(公告)号：JPS63204808A
公开(公告)日：1988-08-24
申请号：JP3632687
申请日：1987-02-19
申请人： FUJITSU LTD
发明人： MATSUURA MICHIO
IPC分类号： G06F3/06 , G01R31/316 , G11B20/18 , H03G3/20
摘要： PURPOSE:To attain more accurate margin diagnosis with a simple method by injecting an amplitude level of a pseudo data signal to be injected for circuit diagnosis while being switched in multi-stage. CONSTITUTION:The titled system consists of a read circuit system 2, an amplitude detection section 3, a control section 4 and an amplitude switching means (amplitude changeover section) 50 selecting and outputting an amplitude level of a multi-stage pseudo data signal. That is, the amplitude switching means (amplitude switching section) 50 injecting a pseudo data signal to be injected for the circuit diagnosis while switching the amplitude level of the pseudo data signal is provided and the amplitude level of the multi-stage pseudo data signal inputted to the amplitude switching means (amplitude switching section) 50 is switched and selected by using a level switching control signal from the control section 4. Thus, more accurate various kinds of margin diagnosis are attained with the simple method.

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