Patents by Inventor Edward Charles Gage
Edward Charles Gage has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8804272Abstract: A transducer is configured to interact with a magnetic storage medium, a first channel comprises a first sensor and first circuitry configured to adjust a plurality of first channel parameters, and a second channel comprises a second sensor and second circuitry configured to adjust a plurality of second channel parameters. The first and second channel parameters are independently adjustable by the first and second circuitry, respectively. A detector is coupled to the first and second channels, and configured to detect a head-medium interface event.Type: GrantFiled: July 1, 2013Date of Patent: August 12, 2014Assignee: Seagate Technology LLCInventors: Housan Dakroub, Edward Charles Gage, Tim Rausch
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Publication number: 20140177407Abstract: A light delivery system in a slider includes a channel waveguide, a solid immersion mirror, a near field transducer, and a planar waveguide assembly. The solid immersion mirror focuses light to the near field transducer. In one implementation, the slider includes a first reflective element and a second reflective element formed in the slider to induce an offset between a light source and the near field transducer. The reflective elements redirect light received from a light source between the reflective elements to a focusing element (e.g., a solid immersion mirror) focused on a near field transducer. The reflective elements translate the light in accordance with the offset between the light source and the near field transducer.Type: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Chubing Peng, Edward Charles Gage
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Patent number: 8755254Abstract: An apparatus and associated method for a head gimbal assembly for data transduction in a data storage device with a heat assist laser. Various embodiments of the present invention are generally directed to a slider supporting at least a transducing element on an air bearing surface (ABS) and a laser assembly directly attached to a top side of the slider opposite the ABS. The laser assembly is positioned on the top side with no portion of the laser assembly extending past a longitudinal centerline of the slider.Type: GrantFiled: June 13, 2011Date of Patent: June 17, 2014Assignee: Seagate Technology LLCInventors: Michael Allen Seigler, Edward Charles Gage, Bradley Jay Ver Meer
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Patent number: 8750081Abstract: A light delivery system in a slider includes a channel waveguide, a solid immersion mirror, a near field transducer, and a planar waveguide assembly. The solid immersion mirror focuses light to the near field transducer. In one implementation, the slider includes a first reflective element and a second reflective element formed in the slider to induce an offset between a light source and the near field transducer. The reflective elements redirect light received from a light source between the reflective elements to a focusing element (e.g., a solid immersion mirror) focused on a near field transducer. The reflective elements translate the light in accordance with the offset between the light source and the near field transducer.Type: GrantFiled: December 20, 2012Date of Patent: June 10, 2014Assignee: Seagate Technology LLCInventors: Chubing Peng, Edward Charles Gage
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Patent number: 8730780Abstract: A light source and a waveguide are mounted on a recording head slider. Light rays are emitted from the light source into the waveguide. The waveguide may include two core layers for light ray transmission. The first core layer enhances light coupling efficiency from the light source to the second core layer. The second core layer transforms a profile of the light. The waveguide may include a tapered portion with a narrow opening near the light source and a wider opening near the tapered portion exit. The light rays passing through the waveguide may be directed toward a collimating mirror. The collimating mirror makes the light rays parallel or nearly parallel and re-directs the light rays to a focusing mirror. The focusing mirror focuses the collimated light rays to a spot on a magnetic media disc.Type: GrantFiled: February 22, 2013Date of Patent: May 20, 2014Assignee: Seagate TechnologyInventors: Chubing Peng, Edward Charles Gage, Kalman Pelhos
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Patent number: 8699307Abstract: An apparatus includes a waveguide core having an elongated edge parallel to a substrate plane of the apparatus. An output end of the waveguide core faces a media-facing surface of the apparatus. A plate-like portion of a plasmonic material has a major surface facing the elongated edge of the waveguide core, and the major surface has a narrowed output end facing the media-facing surface. An elongated ridge of the plasmonic material is disposed on at least part of the plate-like portion between an input end and the narrowed output end.Type: GrantFiled: March 7, 2013Date of Patent: April 15, 2014Assignee: Seagate Technology LLCInventors: Chubing Peng, Edward Charles Gage, Yongjun Zhao
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Publication number: 20140036646Abstract: An apparatus includes a waveguide core having an elongated edge parallel to a substrate plane of the apparatus. An output end of the waveguide core faces a media-facing surface of the apparatus. A plate-like portion of a plasmonic material has a major surface facing the elongated edge of the waveguide core, and the major surface has a narrowed output end facing the media-facing surface. An elongated ridge of the plasmonic material is disposed on at least part of the plate-like portion between an input end and the narrowed output end.Type: ApplicationFiled: March 7, 2013Publication date: February 6, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Chubing Peng, Edward Charles Gage, Yongjun Zhao
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Publication number: 20140029396Abstract: An apparatus includes a write element configured to apply a magnetic field to write data on a portion of a heat-assisted magnetic recording media in response to an energizing current. An energy source is configured to heat the portion of the media being magnetized by the write element. A preheat energizing current is applied to the write element during an interval before writing the data to the portion of the media. The preheat energizing current does not cause data to be written to the media and brings at least one of the write element and driver circuitry into thermal equilibrium prior to writing the data on the portion.Type: ApplicationFiled: March 14, 2013Publication date: January 30, 2014Applicant: Seagate Technology LLCInventors: Tim Rausch, Jon D. Trantham, John West Dykes, Housan Dakroub, Charles Paul Henry, Edward Charles Gage, Raul Horacio Andruet, James Gary Wessel, James Dillon Kiely, Bruce Douglas Buch, Barmeshwar Vikramaditya
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Publication number: 20130294207Abstract: Apparatus and method for light source power control during the writing of data to a storage medium. In accordance with various embodiments, a data recording head is provided having a magnetic transducer and a light source. The light source is driven at a first power level to irradiate an adjacent storage medium prior to the writing if data to the medium using the magnetic transducer. The first power level is insufficient to alter a magnetization state of the medium. The light source is subsequently transitioned to a higher, second power level to irradiate the storage medium during the writing of data to said medium using the magnetic transducer, the second power level being sufficient to alter said magnetization state of the medium.Type: ApplicationFiled: July 1, 2013Publication date: November 7, 2013Inventors: Mehmet Fatih Erden, Edward Charles Gage, Darren W. Karns, Yimin Niu, Kaizhong Gao
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Patent number: 8576672Abstract: A layer configured for use in a magnetic stack has electrical resistivity greater than about 5×10?8 ?m and thermal conductivity greater than about 1 W/mK. In some arrangements, the magnetic stack includes a substrate with the layer disposed over the substrate, a magnetic recording layer disposed over the layer, and a thermal resist layer disposed between the layer and the magnetic recording layer. In some arrangements, the layer is configured to function as a heat sink and a soft under layer. A system that incorporates the layer can include a magnetic write pole, a near field transducer (NFT) positioned proximate the write pole that radiates energy.Type: GrantFiled: May 25, 2012Date of Patent: November 5, 2013Assignee: Seagate Technology LLCInventors: Chubing Peng, Edward Charles Gage, Ganping Ju, Jan-Ulrich Thiele, Kaizhong Gao
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Patent number: 8559127Abstract: An apparatus includes a transducer assembly including a waveguide and a grating structured to couple electromagnetic radiation into the waveguide; and a body including an extended cavity vertical cavity surface emitting laser diode, and having an air bearing surface, wherein the transducer assembly is positioned adjacent to the body and the laser diode directs electromagnetic radiation onto the grating. A method of making the apparatus is also included.Type: GrantFiled: December 22, 2010Date of Patent: October 15, 2013Assignee: Seagate Technology LLCInventors: Edward Charles Gage, Michael Lee Covault, Roger Lee Hipwell, Jr.
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Publication number: 20130265860Abstract: A data storage media may have at least a multi-layer recording lamination with a predetermined coercivity. The multi-layer recording lamination can be configured to record at least one servo format mark for a plurality of data tracks with a solid immersion mirror and program a data bit on the multi-layer recording lamination with a near field transducer.Type: ApplicationFiled: April 9, 2012Publication date: October 10, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Edward Charles Gage, Jan-Ulrich Thiele
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Publication number: 20130230279Abstract: A light source and a waveguide are mounted on a recording head slider. Light rays are emitted from the light source into the waveguide. The waveguide may include two core layers for light ray transmission. The first core layer enhances light coupling efficiency from the light source to the second core layer. The second core layer transforms a profile of the light. The waveguide may include a tapered portion with a narrow opening near the light source and a wider opening near the tapered portion exit. The light rays passing through the waveguide may be directed toward a collimating mirror. The collimating mirror makes the light rays parallel or nearly parallel and re-directs the light rays to a focusing mirror. The focusing mirror focuses the collimated light rays to a spot on a magnetic media disc.Type: ApplicationFiled: February 22, 2013Publication date: September 5, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Chubing Peng, Edward Charles Gage, Kalman Pelhos
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Patent number: 8477569Abstract: Apparatus and method for light source power control during the writing of data to a storage medium. In accordance with various embodiments, a data recording head is provided having a magnetic transducer and a light source. The light source is driven at a first power level to irradiate an adjacent storage medium prior to the writing if data to the medium using the magnetic transducer. The first power level is insufficient to alter a magnetization state of the medium. The light source is subsequently transitioned to a higher, second power level to irradiate the storage medium during the writing of data to said medium using the magnetic transducer, the second power level being sufficient to alter said magnetization state of the medium.Type: GrantFiled: February 23, 2011Date of Patent: July 2, 2013Assignee: Seagate Technology LLCInventors: Mehmet Fatih Erden, Edward Charles Gage, Darren W. Karns, Yimin Niu, Kaizhong Gao
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Patent number: 8391107Abstract: An apparatus includes a slider including an air bearing surface and a waveguide configured to receive light from a light source, a sensor positioned to receive a portion of light emitted by the light source prior to the light exiting the slider at the air bearing surface, and a controller controlling the light source power in response to a characteristic of the sensor.Type: GrantFiled: March 21, 2011Date of Patent: March 5, 2013Assignee: Seagate Technology LLCInventors: Edward Charles Gage, Lifu Zhou, Michael Allen Seigler, William Albert Challener
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Patent number: 8385183Abstract: A light source and a waveguide are mounted on a recording head slider. Light rays are emitted from the light source into the waveguide. The waveguide may include two core layers for light ray transmission. The first core layer enhances light coupling efficiency from the light source to the second core layer. The second core layer transforms a profile of the light. The waveguide may include a tapered portion with a narrow opening near the light source and a wider opening near the tapered portion exit. The light rays passing through the waveguide may be directed toward a collimating mirror. The collimating mirror makes the light rays parallel or nearly parallel and re-directs the light rays to a focusing mirror. The focusing mirror focuses the collimated light rays to a spot on a magnetic media disc.Type: GrantFiled: November 5, 2009Date of Patent: February 26, 2013Assignee: Seagate Technology, LLCInventors: Chubing Peng, Edward Charles Gage, Kalman Pelhos
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Patent number: 8339905Abstract: An apparatus comprises an optical transducer positioned adjacent to a storage medium and including a waveguide and a grating for coupling light into the waveguide, a light source transmitting light to the grating, and a detector for detecting a portion of the light, wherein the detected portion of the light has a magnitude that varies in response to the amount of light coupled into the waveguide.Type: GrantFiled: April 13, 2005Date of Patent: December 25, 2012Assignee: Seagate Technology LLCInventors: Tim Rausch, William Albert Challener, Edward Charles Gage, Christophe Daniel Mihalcea, Chubing Peng, Patrick Breckow Chu, Kevin Arthur Gomez
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Publication number: 20120314548Abstract: An apparatus and associated method for a head gimbal assembly for data transduction in a data storage device with a heat assist laser. Various embodiments of the present invention are generally directed to a slider supporting at least a transducing element on an air bearing surface (ABS) and a laser assembly directly attached to a top side of the slider opposite the ABS. The laser assembly is positioned on the top side with no portion of the laser assembly extending past a longitudinal centerline of the slider.Type: ApplicationFiled: June 13, 2011Publication date: December 13, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Michael Allen Seigler, Edward Charles Gage, Bradley Jay Ver Meer
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Patent number: 8228779Abstract: In a particular embodiment, a recording head includes a tapered waveguide adapted to propagate light from a light source a slider adjacent to a surface of a storage medium. The tapered waveguide is adapted to output an elliptical beam to a grating coupler on a slider. The recording head further includes a slider waveguide extending substantially normal to a surface of the storage medium and a grating adapted to couple the elliptical beam into the slider waveguide.Type: GrantFiled: September 22, 2008Date of Patent: July 24, 2012Assignee: Seagate Technology LLCInventors: Chubing Peng, Edward Charles Gage
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Patent number: 8223459Abstract: A recording head includes a magnetic write pole having an end positioned adjacent to an air bearing surface, a first waveguide having an end positioned adjacent to the air bearing surface, a laser, and a coupler for coupling light from the laser to the waveguide. The coupler can include a grating positioned in or adjacent to a lasing cavity of the laser.Type: GrantFiled: June 12, 2008Date of Patent: July 17, 2012Assignee: Seagate Technology LLCInventors: Edward Charles Gage, Michael Allen Seigler