Patents by Inventor Jimmie Ray Shaver
Jimmie Ray Shaver 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: 8972631Abstract: The defined architecture allows for format-efficient data storage on bit-patterned media, while allowing for typical variations in the drive, such as reader to writer gap variations. The defined BPM architecture relaxes some timing requirements on real-time signaling from the formatter to the channel, while enabling bit-accurate alignment between data accesses and the media.Type: GrantFiled: March 15, 2013Date of Patent: March 3, 2015Assignee: Seagate Technology LLCInventors: Jimmie Ray Shaver, Barmeshwar Vikramaditya
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Patent number: 8867158Abstract: Data format that allows for format-efficient data storage, particularly on bit-patterned media. The data format allows for variations in the data storage device, such as reader-to-writer gap variations. A medium can also have at least a pair of a synchronization field and a quiet field with a length greater than a length of the synchronization field. These can be implemented in a bit patterned media system.Type: GrantFiled: March 15, 2013Date of Patent: October 21, 2014Assignee: Seagate Technology LLCInventors: Jimmie Ray Shaver, Barmeshwar Vikramaditya
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Patent number: 8861117Abstract: A data format that allows for format-efficient data storage, particularly on bit-patterned media. The data format uses an intersector gap that is dimensioned relative to a physical dimension of a transducer. Further described is a data storage medium comprising transducer overhead, such as an intersector gap, interleaved with fragment overhead. Also described is a storage medium comprising intersector gaps that each include a write splice and extra symbols.Type: GrantFiled: March 15, 2013Date of Patent: October 14, 2014Assignee: Seagate Technology LLCInventors: Jimmie Ray Shaver, Barmeshwar Vikramaditya
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Publication number: 20140268395Abstract: Data format that allows for format-efficient data storage, particularly on bit-patterned media. The data format allows for variations in the data storage device, such as reader-to-writer gap variations. A medium can also have at least a pair of a synchronization field and a quiet field with a length greater than a length of the synchronization field. These can be implemented in a bit patterned media system.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventors: Jimmie Ray Shaver, Barmeshwar Vikramaditya
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Publication number: 20140281061Abstract: The defined architecture allows for format-efficient data storage on bit-patterned media, while allowing for typical variations in the drive, such as reader to writer gap variations. The defined BPM architecture relaxes some timing requirements on real-time signaling from the formatter to the channel, while enabling bit-accurate alignment between data accesses and the media.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventors: Jimmie Ray Shaver, Barmeshwar Vikramaditya
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Publication number: 20140268396Abstract: A data format that allows for format-efficient data storage, particularly on bit-patterned media. The data format uses an intersector gap that is dimensioned relative to a physical dimension of a transducer. Further described is a data storage medium comprising transducer overhead, such as an intersector gap, interleaved with fragment overhead. Also described is a storage medium comprising intersector gaps that each include a write splice and extra symbols.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Jimmie Ray Shaver, Barmeshwar Vikramaditya
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Patent number: 7679852Abstract: Apparatus and methods are disclosed that adjust the phase of a read/write clock signal. The read/write clock signal may be used in a data storage apparatus to regulate reading/writing on a data storage media. An apparatus includes an adjustment circuit that adjusts phase of an edge of a read/write clock signal based on the timing of information that is read from a data storage media. Another apparatus includes a servo circuit and a read/write channel circuit. The servo circuit generates a leading edge transition of a servo gate signal in response to a signal indicating that a read/write transducer is approaching a start of a servo wedge. The read/write channel circuit generates a trailing edge transition of the servo gate signal in response to occurrence of a defined time delay following the transducer reading a servo address mark from the servo wedge.Type: GrantFiled: June 28, 2007Date of Patent: March 16, 2010Assignee: Seagate Technology LLCInventors: Jimmie Ray Shaver, Robert William Warren, Jr.
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Publication number: 20090002866Abstract: Apparatus and methods are disclosed that adjust the phase of a read/write clock signal. The read/write clock signal may be used in a data storage apparatus to regulate reading/writing on a data storage media. An apparatus includes an adjustment circuit that adjusts phase of an edge of a read/write clock signal based on the timing of information that is read from a data storage media. Another apparatus includes a servo circuit and a read/write channel circuit. The servo circuit generates a leading edge transition of a servo gate signal in response to a signal indicating that a read/write transducer is approaching a start of a servo wedge. The read/write channel circuit generates a trailing edge transition of the servo gate signal in response to occurrence of a defined time delay following the transducer reading a servo address mark from the servo wedge.Type: ApplicationFiled: June 28, 2007Publication date: January 1, 2009Inventors: Jimmie Ray Shaver, Robert William Warren, JR.
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Patent number: 6690524Abstract: An apparatus and method are disclosed for improving data recovery operations in a disc drive employing a redundant sync data block format. The disc drive includes a rotatable disc and a controllably positionable head which is used to store user data in a plurality of data blocks on tracks of the disc. Each data block includes a user data field to store user data, a first sync field and a redundant, second sync field, the sync fields storing first and second sync words, respectively, which establish symbol boundaries used by a read channel of the disc drive. User data are recovered from a selected data block by initiating a delay of selected duration during which a first portion of the selected data block passes proximate the head, allowing the second, remaining portion of the selected data block to be read at the completion of the delay.Type: GrantFiled: July 20, 2000Date of Patent: February 10, 2004Assignee: Seagate Technology LLCInventors: Shawn Alan Wakefield, Jimmie Ray Shaver, Brett Alan Sloan
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Patent number: 6594096Abstract: Embodiments of the present invention illustrate various configurations of a channel-to-controller interface. In one embodiment, width of symbols crossing the interface is fixed, as is the clock rate. In other embodiments, the symbol width is variable, and the clock rate is also varied based upon the size of the interface symbol width and the operation of the channel.Type: GrantFiled: June 28, 2001Date of Patent: July 15, 2003Assignee: Seagate Technology LLCInventors: Kenneth R. Burns, Srinivas Maddali, Jimmie Ray Shaver, Bernardo Rub, Peter I. Vasiliev, Wuping Chen, Kavi Alptekin, Gary W. Reininga, Robert D. Cronch, Clifton J. Williamson
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Publication number: 20020021516Abstract: Embodiments of the present invention illustrate various configurations of a channel-to-controller interface. In one embodiment, width of symbols crossing the interface is fixed, as is the clock rate. In other embodiments, the symbol width is variable, and the clock rate is also varied based upon the size of the interface symbol width and the operation of the channel.Type: ApplicationFiled: June 28, 2001Publication date: February 21, 2002Inventors: Kenneth R. Burns, Srinivas Maddali, Jimmie Ray Shaver, Bernardo Rub, Peter I. Vasiliev, Wuping Chen, Kavi Alptekin, Gary W. Reininga, Robert D. Cronch, Clifton J. Williamson
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Patent number: 6097561Abstract: An apparatus and method are disclosed for improving data recovery operations in a disc drive employing a redundant sync data block format. The disc drive includes a rotatable disc and a controllably positionable head which is used to store user data in a plurality of data blocks on tracks of the disc. Each data block includes a user data field to store user data, a first sync field and a redundant, second sync field, the sync fields storing first and second sync words, respectively, which establish symbol boundaries used by a read channel of the disc drive. User data are recovered from a selected data block by initiating a delay of selected duration during which a first portion of the selected data block passes proximate the head, allowing the second, remaining portion of the selected data block to be read at the completion of the delay.Type: GrantFiled: March 9, 1998Date of Patent: August 1, 2000Assignee: Seagate Technology, Inc.Inventors: Shawn Alan Wakefield, Jimmie Ray Shaver, Brett Alan Sloan
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Patent number: 5983309Abstract: An address translation unit is provided for logical to physical address conversion. In particular, apparatus and method are described for receiving a logical cylinder head sector for a logical block address and converting it into a physical cylinder head sector. If a logical block address is received, it is converted to a physical block address and then the physical block address is converted into a physical cylinder head sector. If a logical cylinder head sector is first received, it is converted into a logical block address, and then the conversion takes place just as it would for an initially received logical block address.Type: GrantFiled: August 20, 1997Date of Patent: November 9, 1999Assignee: Seagate Technology, Inc.Inventors: Sean R. Atsatt, Pervez Edul Virjee, Prafulla Bollampalli Reddy, Mark Hubert Groo, Timothy Verne Gates, William Kent Weberg, Jimmie Ray Shaver