Patents by Inventor Zahirudeen Premji
Zahirudeen Premji 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: 7260417Abstract: A storage enterprise comprising multiple storage enterprise components coupled to exchange signals via respective wireless interfaces. The signals exchanged may include power signals and/or information signals. Power signals may be exchanged by an inductive coupling (wireless) between a first component and a second component. Information signals may include command/status and data signals exchanged between a first component and a second component. Any of several hierarchies of the connections in a storage enterprise may utilize such wireless connections. Exemplary wireless connection may include: storage controller to storage device or storage enclosure, storage enclosure to storage device, SAN appliance to storage device or storage enclosure or storage controller, computing node to storage device or storage enclosure or storage controller or SAN appliance.Type: GrantFiled: May 4, 2004Date of Patent: August 21, 2007Assignee: LSI CorporationInventors: Mohamad H. El-Batal, Thomas E. Richardson, Zahirudeen Premji
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Patent number: 7260423Abstract: A circuit providing a wireless connection for receipt and/or transmission of electronic signals between a storage device and an external device such as a host system, a storage subsystem controller, or a storage subsystem. The wireless connection circuit may include a wireless data connection to provide wireless exchange of data signals between the storage device and the external device. The wireless connection circuit may also provide an inductive coupling for power supplied to the storage device. In one aspect hereof the wireless connectivity (data, power or both) may be provided as enhanced circuits on a controller circuit integrated with the storage device. In another aspect hereof, the wireless connectivity may be provided as an adapter or interface circuit coupled to an existing storage device interface to adapt wired connections of the storage device to an external device through a wireless signal exchange protocol.Type: GrantFiled: May 4, 2004Date of Patent: August 21, 2007Assignee: LSI CorporationInventors: Thomas E. Richardson, Zahirudeen Premji, Mohamad H. El-Batal
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Publication number: 20050250555Abstract: A circuit providing a wireless connection for receipt and/or transmission of electronic signals between a storage device and an external device such as a host system, a storage subsystem controller, or a storage subsystem. The wireless connection circuit may include a wireless data connection to provide wireless exchange of data signals between the storage device and the external device. The wireless connection circuit may also provide an inductive coupling for power supplied to the storage device. In one aspect hereof the wireless connectivity (data, power or both) may be provided as enhanced circuits on a controller circuit integrated with the storage device. In another aspect hereof, the wireless connectivity may be provided as an adapter or interface circuit coupled to an existing storage device interface to adapt wired connections of the storage device to an external device through a wireless signal exchange protocol.Type: ApplicationFiled: May 4, 2004Publication date: November 10, 2005Inventors: Thomas Richardson, Zahirudeen Premji, Mohamad El-Batal
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Publication number: 20050250533Abstract: A storage enterprise comprising multiple storage enterprise components coupled to exchange signals via respective wireless interfaces. The signals exchanged may include power signals and/or information signals. Power signals may be exchanged by an inductive coupling (wireless) between a first component and a second component. Information signals may include command/status and data signals exchanged between a first component and a second component. Any of several hierarchies of the connections in a storage enterprise may utilize such wireless connections. Exemplary wireless connection may include: storage controller to storage device or storage enclosure, storage enclosure to storage device, SAN appliance to storage device or storage enclosure or storage controller, computing node to storage device or storage enclosure or storage controller or SAN appliance.Type: ApplicationFiled: May 4, 2004Publication date: November 10, 2005Inventors: Mohamad El-Batal, Thomas Richardson, Zahirudeen Premji
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Patent number: 6363809Abstract: An XY stage for precision movement for use in aligning a wafer in a microlithography system. A main stage supporting the wafer straddles a movable beam that is magnetically driven in a first linear direction in the XY plane. A follower stage, mechanically independent of the main stage, also moves in the first linear (X) direction and its motion is electronically synchronized by a control system with the main stage motion in the X direction. Electromagnetic drive motors include magnetic tracks mounted on the follower stage which cooperate with motor coils mounted on the edges of the main stage to move the main stage in a second linear (Y) direction normal to the X direction. Thus the main stage is isolated from mechanical disturbances in the XY plane since there is no mechanical connections and is lightened by removing the weight of the magnetic tracks from the beam.Type: GrantFiled: September 7, 2000Date of Patent: April 2, 2002Assignee: Nikon Corporation, JapanInventors: W. Thomas Novak, Zahirudeen Premji, Uday G. Nayak, Akimitsu Ebihara
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Patent number: 6134981Abstract: An XY stage for precision movement for use in aligning a wafer in a microlithography system. A main stage supporting the wafer straddles a movable beam that is magnetically driven in a first linear direction in the XY plane. A follower stage, mechanically independent of the main stage, also moves in the first linear (X) direction and its motion is electronically synchronized by a control system with the main stage motion in the X direction. Electromagnetic drive motors include magnetic tracks mounted on the follower stage which cooperate with motor coils mounted on the edges of the main stage to move the main stage in a second linear (Y) direction normal to the X direction. Thus the main stage is isolated from mechanical disturbances in the XY plane since there is no mechanical connections and is lightened by removing the weight of the magnetic tracks from the beam.Type: GrantFiled: December 3, 1999Date of Patent: October 24, 2000Assignee: Nikon Research Corporation of AmericaInventors: W. Thomas Novak, Zahirudeen Premji, Uday G. Nayak, Akimitsu Ebihara
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Patent number: 5996437Abstract: An XY stage for precision movement for use in aligning a wafer in a microlithography system. A main stage supporting the wafer straddles a movable beam that is magnetically driven in a first linear direction in the XY plane. A follower stage, mechanically independent of the main stage, also moves in the first linear (X) difection and its motion is electronically synchronized by a control system with the main stage motion in the X direction. Electromagnetic drive motors include magnetic tracks mounted on the follower stage which cooperate with motor coils mounted on the edges of the main stage to move the main stage in a second linear (Y) direction normal to the X direction. Thus the main stage is isolated from mechanical disturbances in the XY plane since there is no mechanical connections and is lightened by removing the weight of the magnetic tracks from the beam.Type: GrantFiled: February 11, 1997Date of Patent: December 7, 1999Assignee: Nikon CorporationInventors: W. Thomas Novak, Zahirudeen Premji, Uday G. Nayak, Akimitsu Ebihara
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Patent number: 5623853Abstract: An XY stage for precision movement for use in aligning a wafer in a microlithography system. A main stage supporting the wafer straddles a movable beam that is magnetically driven in a first linear direction in the XY plane. A follower stage, mechanically independent of the main stage, also moves in the first linear (X) direction and its motion is electronically synchronized by a control system with the main stage motion in the X direction. Electromagnetic drive motors include magnetic tracks mounted on the follower stage which cooperate with motor coils mounted on the edges of the main stage to move the main stage in a second linear (Y) direction normal to the X direction. Thus the main stage is isolated from mechanical disturbances in the XY plane since there is no mechanical connections and is lightened by removing the weight of the magnetic tracks from the beam.Type: GrantFiled: October 19, 1994Date of Patent: April 29, 1997Assignee: Nikon Precision Inc.Inventors: W. Thomas Novak, Zahirudeen Premji, Uday G. Nayak, Akimitsu Ebihara
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Patent number: 5105076Abstract: An objective lens having chromatic aberration is disposed in an optical system for focusing recording and/or reproducing light beams upon a surface of an optical disc, and two detecting light beams having different wavelengths are passed through the lens. When the surface of the optical disc is positioned at a focal point of one of the beams, the other beam is not focused on the optical disc. When the surface of the disc is positioned midway between the focal points of the two beams, two light spots formed on the optical disc by the two beams have equal intensity. The light intensity of the two spots is detected, so that focusing errors can be determined based on the difference between the detected intensities.Type: GrantFiled: August 8, 1990Date of Patent: April 14, 1992Assignee: Nikon CorporationInventor: Zahirudeen Premji
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Patent number: 4991160Abstract: An integrated optical device for magneto-optical recording and/or reading employs elements that may be fabricated on a substrate using semiconductor manufacturing technology. Such elements include, but are not limited to, a system of waveguides for transmitting light energy beams from lasers to end portions of the waveguides exposed to the outside of the substrate, and from those end portions to detectors, so that reading, writing, focusing, and tracking operations may be performed. The waveguide systems include, e.g., polarization controllers and mode splitters.Type: GrantFiled: February 20, 1990Date of Patent: February 5, 1991Assignee: Nikon Precision Inc.Inventor: Zahirudeen Premji
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Patent number: 4609105Abstract: A protective cartridge assembly for protecting the sensitive recording surface of an information recording disk, said assembly being comprised of a cartridge housing having a pair of cartridge stand-offs attached to the inner upper surface of the cartridge housing, a cartridge tray for supporting the disk placed therein, and a disk spacer ring attached to the disk. The cartridge housing has an opening in its side in which the cartridge insert tray is slidably mounted. The cartridge housing has a protruding lip which cooperates with a recess in the exterior portion of the cartridge tray to sealably close the cartridge assembly thereby preventing contamination from entering the cartridge interior. The cartridge housing stand-offs and the disk spacer rings cooperate to prevent the disk recording surface from contacting the interior surface of the cartridge housing.Type: GrantFiled: September 27, 1984Date of Patent: September 2, 1986Assignee: Storage Technology Partners IIInventors: Kenneth Manes, Zahirudeen Premji, Edward White