Patents by Inventor Dian Song
Dian Song 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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Publication number: 20120201346Abstract: The present disclosure provides a convertor for X-ray radiography and its manufacturing method and an X-ray detector, wherein the surface of the scintillator facing the X-ray is covered with photonic crystals of a two-dimensional or three-dimensional spatial structure capable of reflecting the visible light facing the photonic crystals generated by the scintillator to increase the intensity of the output light of the scintillator by more than 100%, thus enhancing the image brightness and improving the image resolution, in addition to reducing to a certain extent the interference between pixels due to the ability of the photonic crystals to control the direction of the light being reflected, for example, by controlling the reflecting direction so as to be vertical to the surface of the scintillator, and the manufacturing method and material for the photonic crystals are low in cost without toxicity, enabling it to be used more widely.Type: ApplicationFiled: September 16, 2010Publication date: August 9, 2012Inventors: Dian Song Cao, Lei Cao, Guang Wei Du, Li Rong Ren, Xiao Dong Xu
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Patent number: 7795984Abstract: Apparatus to generate signals with multiple phases are described. The apparatus includes a fixed multilayer stack providing a varying magnetic field and at least two sensors adjacent the fixed multilayer stack to sense the varying magnetic field and generate at least two output signals. The frequency of the output signals can be tuned by an input current.Type: GrantFiled: June 4, 2008Date of Patent: September 14, 2010Assignee: Seagate Technology, LLCInventors: Haiwen Xi, Dian Song, Song S. Xue
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Publication number: 20090302953Abstract: Apparatus to generate signals with multiple phases are described. The apparatus includes a fixed multilayer stack providing a varying magnetic field and at least two sensors adjacent the fixed multilayer stack to sense the varying magnetic field and generate at least two output signals. The frequency of the output signals can be tuned by an input current.Type: ApplicationFiled: June 4, 2008Publication date: December 10, 2009Applicant: SEAGATE TECHNOLOGY LLCInventors: Haiwen Xi, Dian Song, Song S. Xue
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Publication number: 20090262460Abstract: A head or slider having a sensor element to detect changes in head-media spacing is disclosed. In illustrated embodiments the sensor element includes a piezoelectric sensor layer or similar layer that provides acoustic emission or vibration responsive to changes in head-media spacing. In illustrated embodiments, the sensor element is located proximate to the close point of the head and slider. In embodiments described in the specification, output from the sensor element is utilized to energize a heating element or microactuator to control pole tip protrusion or actuation of transducer elements responsive to changes in head-media spacing.Type: ApplicationFiled: June 25, 2009Publication date: October 22, 2009Applicant: Seagate Technology LLCInventors: Jorge Vicente Hanchi, Dian Song, John Stuart Wright, Andrew D. White
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Publication number: 20090251821Abstract: A transducing head for use with a storage medium rotatable about an axis includes first and second writers for writing to the storage medium. The first writer is configured for dedicated writing to a first radial region of the storage medium, and the second writer is configured for dedicated writing to a second radial region of the storage medium. The second radial region is located radially outward from the first radial region.Type: ApplicationFiled: April 4, 2008Publication date: October 8, 2009Applicant: SEAGATE TECHNOLOGY LLCInventors: Dian Song, Huaqing Yin, Ralph William Cross
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Patent number: 7564649Abstract: A head assembly having a sensor element on the head assembly. Embodiments of the sensor element are configured to detect non-contact induced head-media interface instability, “onset of contact” or low level interference. The non-contact head-media instability or interference is detected based upon sensor feedback relating to excitation of the air bearing resonance modes of the slider body. In embodiments of the present invention, the sensor head assembly includes a microactuator which is energizable to microactuate the head or transducer elements on the head assembly.Type: GrantFiled: April 27, 2005Date of Patent: July 21, 2009Assignee: Seagate Technology LLCInventors: Jorge Vicente Hanchi, Dian Song, John Stuart Wright, Andrew D. White
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Patent number: 7522380Abstract: A transducer for magnetically reading and writing information is disclosed. The present invention eases the intricate process of wafer thin film deposition and bar lapping by proposing a transducer including a first and second member, both of which perform the reading and writing function of the transducer. The present invention provides a transducer with greatly improved magnetic efficiency by probing the media magnetization directly. The structure is inherently stable due to shape anisotropy of the members and the closure of magnetic flux at the ends of each member.Type: GrantFiled: June 14, 2005Date of Patent: April 21, 2009Assignee: Seagate Technology LLCInventor: Dian Song
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Publication number: 20080253021Abstract: A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable beyond the external contact surface. The contact member surrounds at least a portion of the extendable writer portion.Type: ApplicationFiled: April 12, 2007Publication date: October 16, 2008Applicant: Seagate Technology LLCInventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang
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Patent number: 7247627Abstract: The invention relates to non-hygroscopic salts of 5-[(Z)-(5-fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl]-N-[(2S)-2-hydroxy-3-morpholin-4-ylpropyl]-2,4-dimethyl-1H-pyrrole-3-carboxamide, such as maleate salts, and to crystalline polymorphs of these salts. The invention further relates to pharmaceutical compositions of 5-[(Z)-(5-fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl]-N-[(2S)-2-hydroxy-3-morpholin-4-ylpropyl]-2,4-dimethyl-1H-pyrrole-3-carboxamide salts, and methods of treating disorders such as cancer using such compositions.Type: GrantFiled: September 30, 2004Date of Patent: July 24, 2007Assignee: Pharmacia & Upjohn CompanyInventors: Andrei Blasko, Qingwu Jin, Qun Lu, Michael A. Mauragis, Dian Song, Brenda S. Vonderwell
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Publication number: 20060279877Abstract: A transducer for magnetically reading and writing information is disclosed. The present invention eases the intricate process of wafer thin film deposition and bar lapping by proposing a transducer including a first and second member, both of which perform the reading and writing function of the transducer. The present invention provides a transducer with greatly improved magnetic efficiency by probing the media magnetization directly. The structure is inherently stable due to shape anisotropy of the members and the closure of magnetic flux at the ends of each member.Type: ApplicationFiled: June 14, 2005Publication date: December 14, 2006Inventor: Dian Song
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Publication number: 20060245110Abstract: A head assembly having a sensor element on the head assembly. Embodiments of the sensor element are configured to detect non-contact induced head-media interface instability, “onset of contact” or low level interference. The non-contact head-media instability or interference is detected based upon sensor feedback relating to excitation of the air bearing resonance modes of the slider body. In embodiments of the present invention, the sensor head assembly includes a microactuator which is energizable to microactuate the head or transducer elements on the head assembly.Type: ApplicationFiled: April 27, 2005Publication date: November 2, 2006Applicant: Seagate Technology LLCInventors: Jorge Hanchi, Dian Song, John Wright, Andrew White
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Patent number: 6985326Abstract: In an electrostatic actuator used to control fly height between a magnetic disc and a read/write head of a disc drive, a multi-layer electrode device is used. The multi-layer electrode device includes alternating insulating layers and conductive electrode layers. By controlling the material properties of each layer of the electrode device, problems associated with leakage current, field emission discharge, tunneling current, and slow actuator response time can be controlled.Type: GrantFiled: November 17, 2003Date of Patent: January 10, 2006Assignee: Seagate Technology LLCInventors: Jianxin Zhu, Joel W. Hoehn, Dian Song
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Publication number: 20050118255Abstract: The invention relates to non-hygroscopic salts of 5-[(Z)-(5-fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl]-N-[(2S)-2-hydroxy-3-morpholin-4-ylpropyl]-2,4-dimethyl-1H-pyrrole-3-carboxamide, such as maleate salts, and to crystalline polymorphs of these salts. The invention further relates to pharmaceutical compositions of 5-[(Z)-(5-fluoro-2-oxo-1,2-dihydro-3H-indol-3-ylidene)methyl]-N-[(2S)-2-hydroxy-3-morpholin-4-ylpropyl]-2,4-dimethyl-1H-pyrrole-3-carboxamide salts, and methods of treating disorders such as cancer using such compositions.Type: ApplicationFiled: September 30, 2004Publication date: June 2, 2005Inventors: Andrei Blasko, Qingwu Jin, Qun Lu, Michael Mauragis, Dian Song, Brenda Vonderwell
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Publication number: 20050105203Abstract: In an electrostatic actuator used to control fly height between a magnetic disc and a read/write head of a disc drive, a multi-layer electrode device is used. The multi-layer electrode device includes alternating insulating layers and conductive electrode layers. By controlling the material properties of each layer of the electrode device, problems associated with leakage current, field emission discharge, tunneling current, and slow actuator response time can be controlled.Type: ApplicationFiled: November 17, 2003Publication date: May 19, 2005Inventors: Jianxin Zhu, Joel Hoehn, Dian Song
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Patent number: 6795280Abstract: A method and apparatus for a recording head using a spin-dependent tunneling (SDT) junction. The SDT junction utilizes an aluminum oxide tunnel barrier. The tunnel barrier can be formed to a thickness comparable with a typical Cu spacer layer on a spin valve. With the SDT junction, current is applied perpendicular to the plane of the film. The SDT junctions can have high magneto-resistance up to 40%. The magnetoresistive qualities of a head design incorporating the SDT junction are not directly related to head resistance, head geometry, bias current and film thickness. The method can include forming a spin tunnel barrier by fashioning a stack into a bottom electrode, defining a junction, depositing a layer of insulator, performing a photoprocess, depositing an upper electrode layer and lifting off the top electrode layer to define the electrode. The stack can include a pinned layer, a barrier layer and a free layer. The pinned layer can include NiFe. The barrier layer can include AlOx.Type: GrantFiled: November 17, 1999Date of Patent: September 21, 2004Assignee: Seagate Technology LLCInventors: Dian Song, Nurul Amin, Sining Mao
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Publication number: 20030048584Abstract: A transducing head has an air bearing surface and includes a top shield, a bottom shield, a read sensor, and a first flux guide. The top shield has both a substantially rectangular non-recessed portion and a substantially rectangular recessed portion. The non-recessed portion of the top shield extends from the air bearing surface to the recessed portion of the top shield and has a thickness greater than a thickness of the recessed portion of the top shield. The bottom shield has both a substantially rectangular non-recessed portion and a substantially rectangular recessed portion. The non-recessed portion of the bottom shield extends from the air bearing surface to the recessed portion of the bottom shield and has a thickness greater than a thickness of the recessed portion of the bottom shield. A length of the non-recessed portion of the top shield is substantially equal to a length of the non-recessed portion of the bottom shield.Type: ApplicationFiled: October 24, 2002Publication date: March 13, 2003Applicant: Seagate Technology, Inc.Inventors: Dian Song, Nurul Amin
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Patent number: 6510030Abstract: A method for forming a transducing head first requires the deposition of a bottom shield, a bottom thick gap, a bottom thin gap, a sensor, a first flux guide, a top thin gap, a top thick gap, and a top shield. After each of the layers is deposited, an air bearing portion of both the top and bottom thick gaps is removed, such that a length of the air bearing portion of the top thick gap is substantially equal to a length of the air bearing portion of the bottom thick gap. Next, an air bearing shield is deposited over the air bearing surface, the air bearing shield being in contact with the top and bottom shields, the top and bottom thick gaps, the top and bottom thin gaps, and the flux guide. Finally, the air bearing surface of the transducing head is planarized, resulting in the top and bottom thin gaps and the first flux guide each being exposed at the air bearing surface.Type: GrantFiled: March 17, 2000Date of Patent: January 21, 2003Assignee: Seagate Technology, LLCInventors: Dian Song, Nurul Amin
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Patent number: 6411478Abstract: A spin tunnel junction magnetoresistive head in accordance with the invention includes a pinned ferromagnetic layer, a free ferromagnetic layer and a spin tunnel barrier material positioned relative to the pinned and free ferromagnetic layers such that current flowing through the free ferromagnetic layer is in the plane of the free ferromagnetic layer. The spin tunnel barrier material forms first and second edge junctions. Using the edge junctions, the free ferromagnetic material, the pinned ferromagnetic and the edge junctions can all be formed at least partially in plane with each other, reducing shield-to-shield spacing for the head.Type: GrantFiled: February 8, 2000Date of Patent: June 25, 2002Assignee: Seagate Technology LLCInventors: Sining Mao, Dian Song
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Patent number: 6396668Abstract: A planar spin valve read head comprises a top and a bottom shield, and a first and a second gap layer. The first gap layer is positioned adjacent to the bottom shield. The second gap layer is positioned adjacent to the top shield. The read head includes a planar sensor structure positioned between the first and the second gap layers for sensing a magnetic field from a magnetic medium.Type: GrantFiled: July 24, 2000Date of Patent: May 28, 2002Assignee: Seagate Technology LLCInventors: Sining Mao, Dian Song
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Patent number: 5491411Abstract: A magnetic flux microscope that measures the magnetic field about a sample surface. The apparatus uses a thin-film superconducting quantum interference device (SQUID) as the scanning device. Magnetic shielding is provided about the SQUID and is held stationary relative to the SQUID. The apparatus and method provides a very high magnetic image of the sample with a very high spatial and field resolution.Type: GrantFiled: May 14, 1993Date of Patent: February 13, 1996Assignee: University of MarylandInventors: Frederick C. Wellstood, Anna Mathai, Dian Song, Randall C. Black