| Patent Number |
Title Of Patent |
Date Issued |
| 7604880 |
Information recording medium |
October 20, 2009 |
| In an information recording medium where respective concave parts of a magnetic layer, which is formed on at least one side e of a substrate and in which a predetermined convex/concave pattern has been formed, are filled with non-magnetic material and non-magnetic layers are formed by |
| 7597972 |
Magnetic recording medium including a patterned intermediate layer and a non-patterned soft magn |
October 6, 2009 |
| A magnetic recording medium is provided which has good recording/reproducing characteristics with a recording layer divided in a number of recording elements by a predetermined concavo-convex pattern, and a manufacturing method that enables efficient manufacture of such a magnetic re |
| 7554768 |
Information recording medium with concave/convex servo pattern having decreasing unit convex par |
June 30, 2009 |
| On an information recording medium, a data track pattern and a servo pattern composed of a concave/convex pattern including a plurality of convex parts are formed on at least one surface of a substrate and respective concave parts in the concave/convex pattern are filled with non-mag |
| 7548388 |
Magnetic recording medium, recording/reproducing apparatus, and stamper |
June 16, 2009 |
| On a magnetic recording medium, M sets of burst patterns are formed along a direction of rotation of a substrate in each burst pattern region, where M is a natural number of two or higher. Each burst pattern is formed so as to include two types of burst signal units that are position |
| 7532423 |
Magnetic recording medium, recording/reproducing apparatus, and stamper |
May 12, 2009 |
| On a magnetic recording medium, M sets of burst patterns are formed along a direction of rotation of a substrate in each burst pattern region, where M is a natural number of two or higher. Each burst pattern is formed so as to include two types of burst signal units that are position |
| 7505220 |
Magnetic recording medium, recording/reproducing apparatus, and stamper |
March 17, 2009 |
| On a magnetic recording medium, a servo pattern is formed in a servo pattern region on at least one surface of a substrate by a concave/convex pattern including a convex part, at least protruding end part of which is formed of magnetic material, and a concave part. The servo pattern regi |
| 7480924 |
Magnetic recording and reproducing device and magnetic recording medium |
January 20, 2009 |
| A magnetic recording and reproducing device includes: a magnetic recording medium in which a magnetic recording layer is formed in a concavo-convex pattern so that tracks are formed by convex portions of a predetermined track width and arranged in parallel in the track width direction; a |
| 7477485 |
Information recording medium, recording/reproducing apparatus, and stamper |
January 13, 2009 |
| On an information recording medium, a data track pattern and a servo pattern composed of a concave/convex pattern including a plurality of convex parts are formed on at least one surface side of a substrate and respective concave parts in the concave/convex pattern are filled with no |
| 7474506 |
Magnetic recording medium, recording/reproducing apparatus, and stamper |
January 6, 2009 |
| In a magnetic recording medium including a servo pattern region having a servo pattern formed of a concave/convex pattern having convex portions and concave portions and a data recording region, the region having a data track pattern, the concave portions are formed in an address pattern |
| 7457082 |
Magnetic head for recording/reproduction, magnetic recording medium, and recording/reproduction |
November 25, 2008 |
| A magnetic recording medium constructed as a discrete track-type medium. The magnetic recording medium is constructed so that a track width of data recording tracks is equal to or smaller than a width produced by subtracting twice an off-track width of a magnetic head with respect to |
| 7443622 |
Magnetic recording medium, magnetic recording/reproducing apparatus, and stamper for manufacturi |
October 28, 2008 |
| A reliable magnetic recording medium is provided which comprises a servo signal unit portions formed in a concavo-convex shape, easily produced, and resistant to tracking error. Also provided are a magnetic recording/reproducing apparatus which incorporates the magnetic recording med |
| 7403355 |
Information recording medium, recording/reproducing apparatus, and stamper |
July 22, 2008 |
| On an information recording medium, a data track pattern and a servo pattern composed of a concave/convex pattern including a plurality of convex parts are formed on at least one surface of a substrate and respective concave parts in the concave/convex pattern are filled with non-mag |
| 7368184 |
Magnetic recording medium and magnetic recording device |
May 6, 2008 |
| A magnetic recording medium which has a high areal density and reduced power consumption for recording operations, and a magnetic recording device incorporating the magnetic recording medium. The magnetic recording medium has an upper soft magnetic layer formed uniformly along a plan |
| 7333289 |
Magnetic recording and reproducing apparatus, method of controlling the same, magnetic recording |
February 19, 2008 |
| A magnetic recording and reproducing apparatus and a method of controlling the same, capable of increasing the output of a position control signal and performing a precise positioning control of a magnetic head. The magnetic recording and reproducing apparatus has: a magnetic recording |
| 7307808 |
Magnetic recording and reproducing apparatus and control method thereof, magnetic recording medi |
December 11, 2007 |
| A magnetic recording and reproducing apparatus has a magnetic recording medium onto which servo information including position information is recorded by a concavo-convex pattern formed by a magnetic layer and a signal processing circuit that generates position control signal of a ma |
| 7251101 |
Magnetic head for recording/reproduction, magnetic recording medium, and recording/reproduction |
July 31, 2007 |
| Both a magnetic recording width and a magnetic reproduction width of a magnetic head are equal to or larger than a combined width of a track width of tracks and double an off-track width of the magnetic head with respect to tracks on a magnetic recording medium during recording and r |
| 7218472 |
Magnetic recording and reproducing apparatus and control method for the same |
May 15, 2007 |
| A magnetic recording and reproducing apparatus includes: a magnetic recording medium onto which servo information including position information is recorded by a plurality of concavo-convex patterns formed by a magnetic layer; a gate circuit that extracts a part of a reproducing sign |
| 7203025 |
Magnetic recording medium, magnetic head, and magnetic recording and reproducing device |
April 10, 2007 |
| The magnetic recording and reproducing device has a magnetic recording medium, a recording head for writing magnetic data on the magnetic recording medium, and a reproducing head for reading magnetic data from the magnetic recording medium. In the magnetic recording medium, each trac |
| 7161765 |
Write/read head supporting mechanism, and write/read system |
January 9, 2007 |
| An object of the invention is to provide a write/read head supporting mechanism for a magnetic disk system or optical disk system having a microactuator for effecting a micro-displacement of a slider, wherein any electrostatic breakdown of an electromagnetic transducer element or an |
| 7158340 |
Magnetic recording and reproducing apparatus and magnetic recording medium |
January 2, 2007 |
| The burst pattern shape in a discrete medium is set to a shape (truncated quadrangular pyramid shape) having substantially trapezoidal shapes in a track width direction and in a track circumferential direction, respectively, and a predetermined relationship is satisfied among W1, W2, |
| 6744603 |
Write/read head supporting mechanism, and write/read system |
June 1, 2004 |
| The object of the present invention is to provide a write/read head supporting mechanism for a magnetic or optical disk system having a micro-displacement actuator, by which any impediment to the displacement capability of the actuator is eliminated. A write/read head supporting mech |
| 6621661 |
Write/read head supporting mechanism including a microactuator and a slider connected to a groun |
September 16, 2003 |
| A write/read head supporting mechanism including a slider having an electromagnetic transducer element or an optical module, a suspension for supporting the slider and including a ground region, and a microactuator disposed between the slider and the suspension for displacing said slider |
| 6381104 |
Write/read head supporting mechanism, and write/read system |
April 30, 2002 |
| The object of the invention is to provide a write/read head supporting mechanism for a magnetic or optical disk system having a micro-displacement actuator, by which any impediment to the displacement capability of the actuator is eliminated to achieve reliability improvements. The w |
