Patents by Inventor Keith R. Bloss
Keith R. Bloss 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: 9547609Abstract: A data interface is provided for point-to-point communications between two devices, such as a read channel and a disk controller in an HDD system. An interface for communications from a transmitting device to a receiving device comprises a data bus configured to communicate m bits of data and a corresponding n bit data tag, wherein a given n bit data tag identifies a data type of a corresponding m bits of data on the data bus. An acknowledge signal from the receiving device optionally indicates that data on the data bus has been received and that the data on the data bus can be changed to a new value. A valid flag optionally indicates when a new predefined m-bit data value and corresponding n-bit tag value are on the data bus.Type: GrantFiled: October 31, 2013Date of Patent: January 17, 2017Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Edward J. D'Avignon, Keith R. Bloss, Semere T. Menghis
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Publication number: 20150120981Abstract: A data interface is provided for point-to-point communications between two devices, such as a read channel and a disk controller in an HDD system. An interface for communications from a transmitting device to a receiving device comprises a data bus configured to communicate m bits of data and a corresponding n bit data tag, wherein a given n bit data tag identifies a data type of a corresponding m bits of data on the data bus. An acknowledge signal from the receiving device optionally indicates that data on the data bus has been received and that the data on the data bus can be changed to a new value. A valid flag optionally indicates when a new predefined m-bit data value and corresponding n-bit tag value are on the data bus.Type: ApplicationFiled: October 31, 2013Publication date: April 30, 2015Applicant: LSI CorporationInventors: Edward J. D'Avignon, Keith R. Bloss, Semere T. Menghis
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Patent number: 8526131Abstract: Various embodiments of the present invention provide systems and methods for determining head polarity. As an example, a head polarity detection circuit includes: a first computation circuit, a second computation circuit, and an inversion determination circuit. The first computation circuit is operable to sum an absolute value of each sample of a first subset of a series of data samples corresponding to a first phase of an analog input to yield a first sum, and the second computation circuit is operable to sum an absolute value of each sample of a second subset of the series of data samples corresponding to a second phase of the analog input to yield a second sum. The first phase is more than ninety degrees offset from the second phase.Type: GrantFiled: November 29, 2010Date of Patent: September 3, 2013Assignee: LSI CorporationInventors: Viswanath Annampedu, Jeffrey P. Grundvig, Keith R. Bloss, Vishal Narielwala
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Patent number: 8498072Abstract: Various embodiments of the present invention provide systems and methods for determining a location of a spiral pattern. As an example, a location detection circuits is discussed that includes: a pattern detection circuit, a computation circuit, and a center determination circuit. The pattern detection circuit is operable to identify a subset of a series of data samples corresponding to a defined pattern, and to indicate a location of the identified subset of the series of data samples. The series of data samples corresponds to a spiral pattern. The computation circuit operable to sum an absolute value of each sample of the subset of the series of data samples to yield a sum. The center determination circuit operable to identify a location of the spiral pattern using the sum.Type: GrantFiled: November 29, 2010Date of Patent: July 30, 2013Assignee: LSI CorporationInventors: Viswanath Annampedu, Jeffrey P. Grundvig, Keith R. Bloss, Vishal Narielwala
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Publication number: 20120134043Abstract: Various embodiments of the present invention provide systems and methods for determining a location of a spiral pattern. As an example, a location detection circuits is discussed that includes: a pattern detection circuit, a computation circuit, and a center determination circuit. The pattern detection circuit is operable to identify a subset of a series of data samples corresponding to a defined pattern, and to indicate a location of the identified subset of the series of data samples. The series of data samples corresponds to a spiral pattern. The computation circuit operable to sum an absolute value of each sample of the subset of the series of data samples to yield a sum. The center determination circuit operable to identify a location of the spiral pattern using the sum.Type: ApplicationFiled: November 29, 2010Publication date: May 31, 2012Inventors: Viswanath Annampedu, Jeffrey P. Grundvig, Keith R. Bloss, Vishal Narielwala
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Publication number: 20120134042Abstract: Various embodiments of the present invention provide systems and methods for determining head polarity. As an example, a head polarity detection circuit includes: a first computation circuit, a second computation circuit, and an inversion determination circuit. The first computation circuit is operable to sum an absolute value of each sample of a first subset of a series of data samples corresponding to a first phase of an analog input to yield a first sum, and the second computation circuit is operable to sum an absolute value of each sample of a second subset of the series of data samples corresponding to a second phase of the analog input to yield a second sum. The first phase is more than ninety degrees offset from the second phase.Type: ApplicationFiled: November 29, 2010Publication date: May 31, 2012Inventors: Viswanath Annampedu, Jeffrey P. Grundvig, Keith R. Bloss, Vishal Narielwala
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Patent number: 8059349Abstract: Various systems and methods for peak signal detection. As one example, a method for peak signal detection that includes receiving a signal is disclosed. The received signal includes a signal region where the signal is increasing in amplitude, another signal region where the signal is decreasing in amplitude, and a transitional signal region coupling the first two signal regions. In some cases, the transitional region is of zero duration and the signal transitions directly from the increasing region to the decreasing region. The method further include calculating a distance between the signal region of increasing amplitude and the signal region of decreasing amplitude, and determining a peak of the received signal that is one half the distance from the signal region of increasing amplitude.Type: GrantFiled: April 30, 2010Date of Patent: November 15, 2011Assignee: Agere Systems Inc.Inventors: Viswanath Annampedu, Keith R. Bloss, Tianyang Ding, Jeffrey P. Grundvig, Roy S. Neville
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Publication number: 20100232046Abstract: Various systems and methods for peak signal detection. As one example, a method for peak signal detection that includes receiving a signal is disclosed. The received signal includes a signal region where the signal is increasing in amplitude, another signal region where the signal is decreasing in amplitude, and a transitional signal region coupling the first two signal regions. In some cases, the transitional region is of zero duration and the signal transitions directly from the increasing region to the decreasing region. The method further include calculating a distance between the signal region of increasing amplitude and the signal region of decreasing amplitude, and determining a peak of the received signal that is one half the distance from the signal region of increasing amplitude.Type: ApplicationFiled: April 30, 2010Publication date: September 16, 2010Inventors: Viswanath Annampedu, Keith R. Bloss, Tianyang Ding, Jeffrey P. Grundvig, Roy S. Neville
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Patent number: 7738200Abstract: Various systems and methods for peak signal detection. As one example, a method for peak signal detection that includes receiving a signal is disclosed. The received signal includes a signal region where the signal is increasing in amplitude, another signal region where the signal is decreasing in amplitude, and a transitional signal region coupling the first two signal regions. In some cases, the transitional region is of zero duration and the signal transitions directly from the increasing region to the decreasing region. The method further include calculating a distance between the signal region of increasing amplitude and the signal region of decreasing amplitude, and determining a peak of the received signal that is one half the distance from the signal region of increasing amplitude.Type: GrantFiled: May 1, 2006Date of Patent: June 15, 2010Assignee: Agere Systems Inc.Inventors: Viswanath Annampedu, Keith R. Bloss, Tianyang Ding, Jeffrey P. Grundvig, Roy S. Neville
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Patent number: 7423827Abstract: Various systems and methods for accessing data via a variable polarity head assembly are disclosed herein. As one example, a method for accessing data is disclosed that includes receiving a data set, and sampling the data set using positive synchronization to create one data set and negative synchronization to create another data set. A respective sync mark is identified in each of the data sets, and the identified sync marks are compared. Based at least in part on the comparison of the sync marks, a polarity of the data set is identified. Based on the determined polarity of the data set, the data set may be delivered in a known polarity.Type: GrantFiled: April 20, 2006Date of Patent: September 9, 2008Assignee: Agere Systems Inc.Inventors: Roy S. Neville, Viswanath Annampedu, Keith R. Bloss, Vishal Narielwala