Patents by Inventor Menachem Rafaelof
Menachem Rafaelof 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: 20220322022Abstract: A statistical audibility prediction (SAP) method for predicting the audibility of a signal over time at a listening location, the signal from a signal source in the presence of a concurrent masking sound or masker from a masker source. The method includes receiving, via a processor over a plurality of auditory channels, a specific loudness of the signal and masker at the listening location. The method includes calculating for each auditory channel a standard deviation of a distribution of the specific loudness of the signal and masker, and calculating, via the processor, corresponding channel-specific detectability indices (d?t,i) for each auditory channel as a function of their standard deviations. The corresponding channel-specific detectability indices are then summed to produce a total detectability index (d?t), which may be output as an electronic signal that indicates the predicted audibility vs. time, e.g., to a downstream process and/or system or offline.Type: ApplicationFiled: March 30, 2022Publication date: October 6, 2022Inventors: MENACHEM RAFAELOF, KYLE WENDLING, ANDREW W. CHRISTIAN
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Patent number: 7965589Abstract: A device comprises a recordable disc, a substrate adjacent to the recordable disc, and an actuation mechanism fixed to the substrate. The recordable disc includes a base layer and a recordable layer on the base layer. Additional electrodes or magnetic components may be placed on the base layer to provide electromagnetic or electrostatic forces to rotate the recordable disc when acted on by the actuation mechanism. As an example, the invention may utilize MEMS techniques in order to integrate a disc and motor of a disc drive as a common component.Type: GrantFiled: January 23, 2007Date of Patent: June 21, 2011Assignee: Seagate Technology LLCInventors: Roger Hipwell, Nurul Amin, John Pendray, Andrew White, Bradley Ver Meer, Hans Leuthold, Menachem Rafaelof, Wayne Bonin
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Patent number: 7957091Abstract: A device comprises a fluid bearing including a textured fluid bearing surface and a second surface and a recordable disc. The recordable disc includes a substrate, a recordable media layer on the substrate, and at least one of the textured fluid bearing surface and the second surface. The device may be manufactured using MEMS techniques. MEMS techniques provide the high precision necessary to create the textured fluid bearing surface. MEMS techniques also allow the recordable disc to be batch-fabricated with one or more additional recordable discs.Type: GrantFiled: January 23, 2007Date of Patent: June 7, 2011Assignee: Seagate Technology LLCInventors: Roger Hipwell, Nurul Amin, John Pendray, Andrew White, Bradley Ver Meer, Hans Leuthold, Menachem Rafaelof, Wayne Bonin
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Publication number: 20100118425Abstract: Vibration of a rotatable disc is sensed using a pressure sensor positioned adjacent to and spaced apart from a surface of the rotatable disc. The pressure sensor detects pressure variation caused by vibration of the rotatable disc.Type: ApplicationFiled: November 11, 2008Publication date: May 13, 2010Inventor: Menachem Rafaelof
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Publication number: 20080174915Abstract: A device comprises a fluid bearing including a textured fluid bearing surface and a second surface and a recordable disc. The recordable disc includes a substrate, a recordable media layer on the substrate, and at least one of the textured fluid bearing surface and the second surface. The device may be manufactured using MEMS techniques. MEMS techniques provide the high precision necessary to create the textured fluid bearing surface. MEMS techniques also allow the recordable disc to be batch-fabricated with one or more additional recordable discs.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Inventors: Roger L. Hipwell, Nurul Amin, John R. Pendray, Andrew D. White, Bradley J. Ver Meer, Hans L. Leuthold, Menachem Rafaelof, Wayne A. Bonin
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Publication number: 20080174899Abstract: A device comprises a recordable disc, a substrate adjacent to the recordable disc, and an actuation mechanism fixed to the substrate. The recordable disc includes a base layer and a recordable layer on the base layer. Additional electrodes or magnetic components may be placed on the base layer to provide electromagnetic or electrostatic forces to rotate the recordable disc when acted on by the actuation mechanism. As an example, the invention may utilize MEMS techniques in order to integrate a disc and motor of a disc drive as a common component.Type: ApplicationFiled: January 23, 2007Publication date: July 24, 2008Inventors: Roger L. Hipwell, Nurul Amin, John R. Pendray, Andrew D. White, Bradley J. Ver Meer, Hans L. Leuthold, Menachem Rafaelof, Wayne A. Bonin
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Patent number: 6989959Abstract: A flow control device for a data storage system to reduce flow induced vibration. The flow control device includes a plurality of streamline flow passages to reduce turbulent flow in a flow field along a disc surface. Thus, air flow induced by rotation of data discs is directed through the plurality of streamline flow passages to reduce turbulence to limit excitation or vibration of the head and suspension components.Type: GrantFiled: June 14, 2001Date of Patent: January 24, 2006Assignee: Seagate Technology LLCInventors: Yu-Li Chang, Bijoyendra Nath, Ram M. Rao, Scott E. Ryun, Zine-Eddine Boutaghou, Adam K. Himes, Markus E. Mangold, Kent J. Forbord, Su Xia, Menachem Rafaelof
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Patent number: 6961208Abstract: A top cover formed from a metal matrix composite material for use on a data storage device is disclosed. The metal matrix composite material includes a porous matrix material combined with an inclusion material constrained within the pores of the porous matrix material. The porous matrix material is substantially aluminum while the inclusion material is a ceramic such as silicon hexaboride or aluminum boron carbide capable of wetting molten aluminum. The ceramic inclusion material is selected to have a specific modulus greater than the specific modulus of the porous metal matrix such that the entire volume of porous matrix material provides acoustical dampening during operation of the data storage device.Type: GrantFiled: June 26, 2002Date of Patent: November 1, 2005Assignee: Seagate Technology LLCInventors: Rishi Kant, Menachem Rafaelof
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Publication number: 20050099734Abstract: According to one embodiment, a data storage device has a base deck and a cover mounted on the base deck. A Voice Coil Motor (VCM) is mounted on the base deck below the cover. The VCM has a lower magnetic plate mounted on bosses extending from the base deck and an upper magnetic plate mounted on the lower magnetic plate. A damper is positioned between the upper magnetic plate of the VCM and the cover. The damper comprises a plurality of contact points distributed across the upper magnetic plate. The contact points extend between the upper magnetic plate of the VCM and the cover. Alternatively, a damper is positioned between the lower magnetic plate of the VCM and the base deck. The damper comprises a plurality of contact points distributed across the lower magnetic plate. The contact points extend between the lower magnetic plate of the VCM and the base deck.Type: ApplicationFiled: November 6, 2003Publication date: May 12, 2005Inventor: Menachem Rafaelof
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Patent number: 6768229Abstract: A coil construction for a voice coil motor is disclosed. The coil construction includes a series of stacked planar coils disposed on a substrate material. Each planar coil is separated from its neighboring coil or coils by a viscoelastic material to reduce vibration of the coil construction. The coil construction is attached to an actuator arm. Control circuitry creates a current in the coil construction to position a head on the actuator arm. Also disclosed is a method for making a coil for a voice coil motor. The method includes the steps of masking a substrate having a conductive layer with a photoresist, exposing the mask to create a pattern of planar coils, developing the photoresist, and etching the conductive layer to create a planar coil.Type: GrantFiled: July 1, 2002Date of Patent: July 27, 2004Assignee: Seagate Technology LLCInventors: Menachem Rafaelof, Ted Randal McDonald
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Patent number: 6760195Abstract: A method and system for positionally displacing a transducer, or multiple transducers, over a location on a data storage medium is disclosed. An actuator assembly containing at least one actuator arm supporting at least one transducer is used to access a desired location on the data storage medium. The actuator arm contains an intrinsically excitable element, such as piezoelectric material, responsive to a control signal to produce an excitement. The excitement in the element generates a movement of the element that is magnified by a flexure to positionally displace the transducer, which is attached to the flexure. The transducer is displaced from a current, or origination, location to the desired location.Type: GrantFiled: April 17, 2001Date of Patent: July 6, 2004Assignee: Seagate Technology LLCInventor: Menachem Rafaelof
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Patent number: 6724566Abstract: A disc drive device includes a base plate, a voice coil motor operably attached to the base plate, a top cover attached to the base plate with at least two perimeter fasteners and at least one interior fastener, wherein the two perimeter fasteners and the interior fastener form a triangular portion of the top cover therebetween, a pressure seal sealing the top cover and the base plate, and an acoustic damper contacting the voice coil motor and the triangular portion of the top cover for damping vibrations occurring in the voice coil motor and the top cover. The acoustic damper is made of the same material as the pressure seal. In this manner, vibrationally induced acoustical emissions from the disc drive device are reduced.Type: GrantFiled: March 21, 2002Date of Patent: April 20, 2004Assignee: Seagate Technology LLCInventors: Rishi Kant, Menachem Rafaelof, Michael Alan Maiers
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Publication number: 20030179488Abstract: A top cover formed from a metal matrix composite material for use on a data storage device is disclosed. The metal matrix composite material includes a porous matrix material combined with an inclusion material constrained within the pores of the porous matrix material. The porous matrix material is substantially aluminum while the inclusion material is a ceramic such as silicon hexaboride or aluminum boron carbide capable of wetting molten aluminum. The ceramic inclusion material is selected to have a specific modulus greater than the specific modulus of the porous metal matrix such that the entire volume of porous matrix material provides acoustical dampening during operation of the data storage device.Type: ApplicationFiled: June 26, 2002Publication date: September 25, 2003Applicant: Seagate Technology LLCInventors: Rishi Kant, Menachem Rafaelof
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Publication number: 20030127915Abstract: A coil construction for a voice coil motor is disclosed. The coil construction includes a series of stacked planar coils disposed on a substrate material. Each planar coil is separated from its neighboring coil or coils by a viscoelastic material to reduce vibration of the coil construction. The coil construction is attached to an actuator arm. Control circuitry creates a current in the coil construction to position a head on the actuator arm. Also disclosed is a method for making a coil for a voice coil motor. The method includes the steps of masking a substrate having a conductive layer with a photoresist, exposing the mask to create a pattern of planar coils, developing the photoresist, and etching the conductive layer to create a planar coil.Type: ApplicationFiled: July 1, 2002Publication date: July 10, 2003Applicant: Seagate Technology LLCInventors: Menachem Rafaelof, Ted Randal McDonald
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Publication number: 20030058572Abstract: A disc drive device includes a base plate, a voice coil motor operably attached to the base plate, a top cover attached to the base plate with at least two perimeter fasteners and at least one interior fastener, wherein the two perimeter fasteners and the interior fastener form a triangular portion of the top cover therebetween, a pressure seal sealing the top cover and the base plate, and an acoustic damper contacting the voice coil motor and the triangular portion of the top cover for damping vibrations occurring in the voice coil motor and the top cover. The acoustic damper is made of the same material as the pressure seal. In this manner, vibrationally induced acoustical emissions from the disc drive device are reduced.Type: ApplicationFiled: March 21, 2002Publication date: March 27, 2003Applicant: Seagate Technology LLCInventors: Rishi Nmn Kant, Menachem Rafaelof, Michael Alan Maiers
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Patent number: 6534890Abstract: A disc drive spindle motor for reducing the idle noise of a disc drive includes a stator having a first cylindrical surface for contacting a motor mount of the spindle motor. The motor mount includes a second cylindrical surface for contacting only a portion of the first cylindrical surface of the stator to reduce the transmission of vibrations from the stator to a base plate of the disc drive. The motor mount may be attached to a base plate of the disc drive when the spindle motor is formed separately from the disc drive. Alternatively, the motor mount may be formed integrally with the base plate of the disc drive.Type: GrantFiled: September 25, 2001Date of Patent: March 18, 2003Assignee: Seagate Technology LLCInventor: Menachem Rafaelof
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Publication number: 20020163281Abstract: Apparatus for an electrostatic spindle motor is disclosed. More particularly, a stator having a first plurality of surface electrodes is spaced apart from a rotor having a second plurality of surface electrodes for capacitive coupling. At least one of the first plurality of surface electrodes and the second plurality of surface electrodes is configured to conduct electrical charge. A source is configured to provide electrical charge to the at least one of the first plurality of surface electrodes and the second plurality of surface electrodes and to alternate electrical polarity. The rotor and the stator may comprise bearing surfaces to provide a fluid dynamic bearing.Type: ApplicationFiled: December 13, 2001Publication date: November 7, 2002Inventor: Menachem Rafaelof
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Publication number: 20020110026Abstract: A head suspension assembly including fins. The fins are coupled to the suspension assembly and supported along the air flow path or in the flow field to provide operating stability. In one embodiment, the gimbal or suspension includes a fin having a height extending outwardly from one of the opposed surfaces of the gimbal or suspension assembly. In another embodiment, fins include a fin span extending outwardly from opposed sides of the gimbal or suspension assembly.Type: ApplicationFiled: September 12, 2001Publication date: August 15, 2002Inventor: Menachem Rafaelof
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Publication number: 20020075591Abstract: A flow control device for a data storage system to reduce flow induced vibration. The flow control device includes a plurality of streamline flow passages to reduce turbulent flow in a flow field along a disc surface. Thus, air flow induced by rotation of data discs is directed through the plurality of streamline flow passages to reduce turbulence to limit excitation or vibration of the head and suspension components.Type: ApplicationFiled: June 14, 2001Publication date: June 20, 2002Inventors: Yu-Li Chang, Bijoyendra Nath, Ram M. Rao, Scott E. Ryun, Zine-Eddine Boutaghou, Adam K. Himes, Markus E. Mangold, Kent J. Forbord, Su Xia, Menachem Rafaelof
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Publication number: 20020060501Abstract: A disc drive spindle motor for reducing the idle noise of a disc drive includes a stator having a first cylindrical surface for contacting a motor mount of the spindle motor. The motor mount includes a second cylindrical surface for contacting only a portion of the first cylindrical surface of the stator to reduce the transmission of vibrations from the stator to a base plate of the disc drive. The motor mount may be attached to a base plate of the disc drive when the spindle motor is formed separately from the disc drive. Alternatively, the motor mount may be formed integrally with the base plate of the disc drive.Type: ApplicationFiled: September 26, 2001Publication date: May 23, 2002Applicant: Seagate Technology, LLCInventor: Menachem Rafaelof