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91. 发明专利

JP2001176038A MAGNETIC TAPE DRIVE ASSEMBLY AND CLEANING METHOD OF MAGNETIC HEAD 失效
公开(公告)号：JP2001176038A
公开(公告)日：2001-06-29
申请号：JP35135999
申请日：1999-12-10
申请人： SONY CORP
发明人： NAGAI NOBUYUKI , OSUE TADASHI
IPC分类号： G11B5/41 , G11B15/43
摘要： PROBLEM TO BE SOLVED: To prevent the wear of a magnetic head which is small in tolerance of wear of a MR head, etc., and to remove soiling of the head, such as stain, effectively. SOLUTION: The magnetic tape drive assembly 1 which subjects a magnetic tape 5 to recording and reproducing by magnetic heads 3 and 3 for recording and reproducing which are arranged on a head drum 2 and move on a circular locus has a tape tension regulating means capable of controlling tape tension during traveling of the magnetic tape. The tape tension is temporarily increased by the tape tension adjusting means, and the contact pressure of the magnetic tape with the magnetic heads is increased and soiling, such as stain, is removed.

92. 发明专利

JP2001176036A MAGNETIC TAPE DRIVE DEVICE, AND CLEANING METHOD OF MAGNETIC HEAD 失效
公开(公告)号：JP2001176036A
公开(公告)日：2001-06-29
申请号：JP35136099
申请日：1999-12-10
申请人： SONY CORP
发明人： NAGAI NOBUYUKI , OSUE TADASHI
IPC分类号： G11B5/41 , G11B5/53 , G11B15/087
摘要： PROBLEM TO BE SOLVED: To prevent the wear of a recording/reproducing head having a small weal allowable amount in MR head or the like, and to effectively eliminate stains on the head caused by stain deposition or the like. SOLUTION: This magnetic tape driving device 1 where data are recorded/ reproduced on/from a magnetic tape 5 by recording/reproducing magnetic heads 3 and 3 moved on a circular locus and disposed on a head drum 2, is provided with a cleaning means 7 for cleaning a magnetic head by eliminating dusts, such as stain, stuck to the same, an error rate detecting means 15 for detecting the error rate of the magnetic tape during data recording or reproducing on or from the magnetic tape, and an error rate storing means 16 for storing the error rate detected by the error rate detecting means. When an error rate detected by the error rate detecting means is increased by a specified rate with respect to the error rate detected and stored at a given time, the magnetic head is cleaned by the cleaning means.

93. 发明专利

JP2001167413A MAGNETIC TAPE DRIVING DEVICE 失效
公开(公告)号：JP2001167413A
公开(公告)日：2001-06-22
申请号：JP34722299
申请日：1999-12-07
申请人： SONY CORP
发明人： NAGAI NOBUYUKI , OSUE TADASHI
IPC分类号： G11B5/39 , G11B5/41
摘要： PROBLEM TO BE SOLVED: To improve wear resistance of an MR head and also to easily remove the dirt of the head such as stains. SOLUTION: In the magnetic tape driving device 1 which performs recording/ reproducing to/from a magnetic tape 5 by recording/reproducing magnetic heads 3, 3 which are arranged on a head drum 2 and are moved on a circular locus, the head, in the magnetic sensitive part of which a magnetoresistance effect element is used is used for the magnetic heads, a cleaning means 7 which performs cleaning by coming into contact with the magnetic heads is provided, a projected quantity B of the magnetic head from the outer periphery 2a of the head drum is set to 5-20 μm and also the tape tension of the magnetic tape is set to 2-6 g.

94. 发明专利

JP2001167412A CLEANING MEANS FOR RECORDING/REPRODUCING MAGNETIC HEAD AND MAGNETIC TAPE DRIVING DEVICE 失效
公开(公告)号：JP2001167412A
公开(公告)日：2001-06-22
申请号：JP34722199
申请日：1999-12-07
申请人： SONY CORP
发明人： NAGAI NOBUYUKI , OSUE TADASHI
IPC分类号： G11B5/41
摘要： PROBLEM TO BE SOLVED: To provide a compact cleaning means for recording/reproducing magnetic head not consuming excess electric power. SOLUTION: In the cleaning means 7 for recording/reproducing magnetic head, which performs cleaning by coming into contact with the recording/ reproducing magnetic heads 3, 3 which are arranged on a head drum 2 and are moved on the circular locus, a contact member 8 directly coming into contact with the magnetic heads and a contact/uncontact means 12 which comes into contact with and is separated from the contact member to and from the magnetic heads are provided. In the contact/uncontact means, a dynamic lift is generated by the flow of air generated by the rotation of the head drum to separate the contact member from the magnetic heads.

95. 发明专利

JP2001134915A ROTARY DRUM, AND MAGNETIC TAPE RECORDING/REPRODUCING DEVICE USING SAME 失效
公开(公告)号：JP2001134915A
公开(公告)日：2001-05-18
申请号：JP31230699
申请日：1999-11-02
申请人： SONY CORP
发明人： OSUE TADASHI , SHIRAI TOSHIO
IPC分类号： G11B5/008 , G11B5/53 , G11B7/00
摘要： PROBLEM TO BE SOLVED: To increase the recording density of a magnetic tape by changing tape/head relative speed, and to increase recording density by solving a problem due to the increase of the tape/head relative speed. SOLUTION: This device is provided with a pair of recording heads 4A and 4B having different azimuth angles and arranged apart with a center angle of 180 deg., and a second recording head 5A arranged on the same position as that of one recording head 4B of the pair of recording heads in a peripheral direction separated by 5.5 μm in the height direction of a rotary drum 1, and having an azimuth angle different from that of one recording head 4B. A first mode is formed by the pair of recording heads separated from each other with the center angle of 180 deg., and a second mode is formed by the two recording heads on the same position in the peripheral direction.

96. 发明专利

JP2001043587A ROTARY DRUM AND RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JP2001043587A
公开(公告)日：2001-02-16
申请号：JP21564099
申请日：1999-07-29
申请人： SONY CORP
发明人： KABAYA YOSHITERU , OSUE TADASHI
IPC分类号： G11B5/52 , G11B15/61
摘要： PROBLEM TO BE SOLVED: To perform highly accurate tracking control. SOLUTION: A lead pin 14 and a piezoelectric actuator are provided on a rotary drum 10, the piezoelectric actuator being adapted for driving the lead pin in a direction roughly perpendicular to the traveling direction of a tape recording medium. By driving the lead pin 14 according to a servo signal detected by a second head 13b, the tracking position of a recording/reproducing head 13 with respect to the tape recording medium is adjusted.

97. 发明专利

JPH11259834A ROTARY DRUM DEVICE AND MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH11259834A
公开(公告)日：1999-09-24
申请号：JP6168998
申请日：1998-03-12
申请人： SONY CORP
发明人： OSUE TADASHI , SHIRAI TOSHIO , KABAYA YOSHITERU
IPC分类号： G11B5/39 , G11B5/008 , G11B5/53 , G11B15/61
摘要： PROBLEM TO BE SOLVED: To provide a rotary drum device and the magnetic recording and reproducing device of a helical scanning system using an MR (magnetoresistive effect) head as a magnetic head for reproduction. SOLUTION: This rotary drum device 1 is provided with a cylindrical rotary drum 3, an inductive magnetic head 5 mounted on the rotary drum so as to project at least a part from the outer peripheral part of the rotary drum and a magnetoresistive effect magnetic head 6 mounted on the rotary drum so as to project at least a part from the outer peripheral part of the rotary drum. Then, the projection amount of the magnetoresistive effect magnetic head 6 from the outer peripheral part of the rotary drum is smaller than the projection amount of the inductive type magnetic head 5 from the outer peripheral part of the rotary drum.

98. 发明专利

JPH10334433A MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH10334433A
公开(公告)日：1998-12-18
申请号：JP14279997
申请日：1997-05-30
申请人： SONY CORP
发明人： OSUE TADASHI
IPC分类号： G11B5/008 , G11B5/53 , G11B15/12 , H04N9/797
摘要： PROBLEM TO BE SOLVED: To make a two-channel recording mode and a multiple channel recording mode compatible in one set of a device by using recording heads of the multiple of two. SOLUTION: This device is provided with a head drum 11, one pair of magnetic heads W1+, W2- which are provided adjacently with each other along the rotational direction of the head drum 11 and have a head width Hw and one pair of magnetic heads W1-, W2+ which are provided adjacently to the recording head W2- and have a head width Hw/2 and the recording heads W1+, W2-, W1-, W2+ are arranged on a common line La supposed along the rotational direction of the head drum 11 so that the upper edge of the recording head W1+, the upper edge of the recording head W1- are respectively lined up with the lower edge of the recording head W2- and the lower edge of the recording head W2+. Then, information by the recording heads W1-, W2+ are overlappingly recorded on both sides of the boundary line of recording tracks precedingly recorded on a tape by the recording heads W1+, W2-.

99. 发明专利

JPH10233013A NON-CONTACT TYPE TRANSMISSION DEVICE AND ROTARY MAGNETIC HEAD DEVICE EQUIPPED WITH THE SAME 失效
公开(公告)号：JPH10233013A
公开(公告)日：1998-09-02
申请号：JP10950697
申请日：1997-04-25
申请人： SONY CORP
发明人： OSUE TADASHI , SHIRAI TOSHIO , IKEGAMI TOMOHIRO
IPC分类号： G11B5/52 , H01F38/14
摘要： PROBLEM TO BE SOLVED: To enhance the reliability of a signal system and non-contact transmission of a power source by equipping a rotor core cross talk preventing part between rotor core power source wiring part and rotor core signal wiring part and a stator core cross talk preventing part between the rotor core power source wiring part and a stator core signal wiring part, a stator core power source wiring part and the stator core signal wiring part and also the stator core power source wiring part and the stator core signal wiring part. SOLUTION: Two areas of a power source area of a power transmission ring PR and a signal area of a regenerative signal transmission ring RR and a write signal transmission ring WR are separately provided in a rotary transformer T. These two areas are separated by an area of the cross talk preventing part 100 of a short ring SR. This short ring SR is applied to the cross talk preventing part of the rotor core 30 and the cross talk preventing part of the stator core 20 respectively for preventing cross talk between their respective two areas of the power source area of the power transmission ring PR and the signal area of the regenerative signal transmission ring RR and the write signal transmission ring WR.

100. 发明专利

JPH09237485A TAPE CASSETTE AND RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JPH09237485A
公开(公告)日：1997-09-09
申请号：JP6751696
申请日：1996-02-29
申请人： SONY CORP
发明人： OSUE TADASHI
IPC分类号： G11B27/00 , G11C5/00
摘要： PROBLEM TO BE SOLVED: To improve the reliability as a recording/reproducing system by eliminating the error of data read out from a nonvolatile memory which is provided on a tape cassette. SOLUTION: The correct data are fetched to the side of recording/reproducing device by constituting in such a manner that the data are read out again from the nonvolatile memory (F101-F105) in the case the error of code is detected in accordance with the error detecting code, which is added to the data to be housed in the nonvolatile memory, at the time when the data of the nonvolatile memory are read out by the recording/reproducing device.

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