Patents by Inventor Denis Langlois

Denis Langlois 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).

  • Publication number: 20160058058
    Abstract: The present invention relates to a process for processing liquid egg in order to obtain a ready to eat processed egg product hermetically contained into a container.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 3, 2016
    Inventors: Sylvain Perron, Denis Langlois
  • Patent number: 7359160
    Abstract: In general, the invention provides a magnetic head device and linear tape drive that increase the resonant frequency and the range of a servo system. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic head elements that is a structural part of the fine positioning system which allows the magnetic head elements follow the data tracks on the linear magnetic tape. Consequently, weight is reduced thereby increasing the resonant frequency and servo bandwidth. In another embodiment, the invention provides a magnetic head comprising bimodal actuators that are formed into an S shape and displaced by applying voltage where the polarization direction is opposite from one end to the other. In particular, the head chip may remain stable and may be driven dynamically thereby allowing the mechanical resonance of the bimodal actuator (including the head chip) to increase to 1 kHz or higher.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: April 15, 2008
    Assignees: Imation Corp., Sony Corporation
    Inventors: Hirohisa Koga, Takashi Abe, Yoshihiko Ito, James S. Anderson, Denis Langlois
  • Publication number: 20080055776
    Abstract: Techniques are described for reselling and/or refurbishing data tape media. The techniques may involve determining life information associated with a data tape medium and reselling the data tape medium when a remaining life of the data tape medium is larger than a pre-defined threshold. In this manner, the quality of resold magnetic tape can be improved, and the media can possibly marketed or warranted to the buyer based on the remaining life. In addition, refurbishing techniques are described that include degaussing of servo written data tape media, followed by the creation of new servo patterns on the degaussed media.
    Type: Application
    Filed: October 25, 2007
    Publication date: March 6, 2008
    Inventors: Brian Findlay, Denis Langlois
  • Patent number: 7339768
    Abstract: In general, the invention provides a magnetic head device and linear tape drive that widen the high frequency side of the servo range. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic elements arranged for recording or playback of multiple tracks and a fine positioning structure that uses a bimodal construction that may widen the high frequency side of the servo range by increasing the resonant frequency of the magnetic head chip including the tracking structure and lowering the Q value of the resonance point. In addition, the invention includes a damping structure suitable for the fine positioning structure that improves high speed response by widening the range in which the magnetic head device can be used for a servo. The magnetic head device may use a linear tape drive method.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: March 4, 2008
    Assignees: Imation Corp., Sony Corporation
    Inventors: Yoshihiko Ito, Hirohisa Koga, Takashi Abe, James S. Anderson, Denis Langlois
  • Publication number: 20070223126
    Abstract: In an embodiment, a data storage tape includes a first side including recorded data and a second side including recorded error correcting code data for the recorded data on the first side. In another embodiment, a data storage tape comprises a first side including recorded data and a second side including a copy of the recorded data. Embodiments of the invention may distribute related data across both sides of a data storage tape and as a result may reduce the probability that a location-dependent error in the data storage tape will result in irretrievable data loss. Embodiments of the invention may be particularly useful for systems that can simultaneously retrieve or record data on both sides of a dual-sided data storage tape.
    Type: Application
    Filed: March 27, 2006
    Publication date: September 27, 2007
    Inventors: Larold Olson, Brian Findlay, C. Jennings, Douglas Johnson, Denis Langlois, Richard Molstad
  • Publication number: 20070094058
    Abstract: Techniques are described for reselling and/or refurbishing data tape media. The techniques may involve determining life information associated with a data tape medium and reselling the data tape medium when a remaining life of the data tape medium is larger than a pre-defined threshold. In this manner, the quality of resold magnetic tape can be improved, and the media can possibly marketed or warranted to the buyer based on the remaining life. In addition, refurbishing techniques are described that include degaussing of servo written data tape media, followed by the creation of new servo patterns on the degaussed media.
    Type: Application
    Filed: October 20, 2005
    Publication date: April 26, 2007
    Inventors: Brian Findlay, Denis Langlois
  • Publication number: 20070002487
    Abstract: The invention is directed to a servo frame that includes servo windows written with different frequencies to provide redundant positioning information. The servo frame includes a set of first servo windows recorded at a first frequency and a set of second servo windows recorded at a second frequency arranged in a checkerboard-like pattern. The different frequencies of the servo windows allow the servo frame to achieve improved positioning information redundancy. A servo track may include a plurality of the servo frames described herein to accurately position data read/write heads adjacent corresponding data tracks. The redundancy built into each of the servo frames substantially minimizes errors in the positioning information.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 4, 2007
    Inventors: Denis Langlois, Douglas Johnson
  • Publication number: 20060274446
    Abstract: The invention is directed to a data storage medium that includes a plurality of servo bands distributed across the data storage medium and a plurality of data tracks positioned between each of the plurality of distributed servo bands. The data storage medium comprises a servo band pitch of less than 200 micrometers. The large number of servo bands distributed across the data storage medium with a relatively small servo band pitch reduces the influence of media dimensional instability. In this way, the invention may substantially increase data read head positioning accuracy, especially in the case of narrow track widths. A read head array arranged in a two-dimensional matrix that includes a first servo read head, a second servo read head, and a plurality of data read heads positioned between the first and second servo read heads may be applied to a data storage medium as described herein.
    Type: Application
    Filed: June 3, 2005
    Publication date: December 7, 2006
    Inventors: Douglas Johnson, James Anderson, David Gobran, Denis Langlois
  • Publication number: 20060186756
    Abstract: The invention provides techniques for adjusting for actuator non-linearities in a data storage system. The invention is particularly useful for piezoelectric actuators, such as actuators that implement a bimorph piezoelectric crystal structure or a laminate piezoelectric crystal structure, although other actuators may present similar non-linearity issues. In one embodiment, the invention provides a method comprising applying a signal to an actuator of a data storage system, the actuator having a non-linear response, wherein the signal includes a linear drive component and a non-linear adjustment component, and positioning a data storage head with respect to a data storage medium via the actuator.
    Type: Application
    Filed: February 18, 2005
    Publication date: August 24, 2006
    Inventors: Denis Langlois, James Anderson
  • Publication number: 20060171060
    Abstract: The invention proposes the use of a piezoelectric crystal element as an actuator for data storage systems. In particular, the piezoelectric crystal element mechanically positions a head with respect to a data storage medium. More specifically, the invention may use a piezoelectric laminate crystal structure as a fine positioning actuator in a magnetic tape system in order to precisely position one or more heads with respect to tracks of the magnetic tape. Furthermore, in order to address hysteresis in the piezoelectric crystal element, the invention proposes the introduction of a high frequency periodic signal as part of the input to the piezoelectric crystal element.
    Type: Application
    Filed: February 3, 2005
    Publication date: August 3, 2006
    Inventors: James Anderson, Denis Langlois, Mark Weber
  • Publication number: 20060126212
    Abstract: The invention provides a read-while-write recording system for a linear data storage medium, such as magnetic tape or other data storage medium in which data is stored on parallel data tracks that extend along a length of the medium. The invention makes use of separate sliders for the read and write elements, and separate actuators to control the positioning of the sliders. Each of the sliders may also include servo elements to read servo marks. In this manner, the write elements of a first slider can be positioned independently from the read elements of a second slider in order to achieve improved head positioning with respect to data tracks on the linear data storage medium.
    Type: Application
    Filed: December 14, 2004
    Publication date: June 15, 2006
    Inventors: James Anderson, Denis Langlois
  • Publication number: 20060126207
    Abstract: A servo pattern is described that facilitates high resolution and wide dynamic range to accurately pinpoint servo track centerlines on a magnetic tape. The servo pattern provides both absolute positioning information over an entire servo band and absolute positioning information relative to the centerline of each servo track included in the servo band. Therefore, the servo pattern includes implicit servo track identification in a single servo band, eliminating the need for conventional track identification marks. In other words, the servo pattern, itself, can distinguish one servo track from another servo track in the single servo band as well as provide highly accurate positioning information relative to each of the servo track centerlines.
    Type: Application
    Filed: June 2, 2004
    Publication date: June 15, 2006
    Inventors: Douglas Johnson, Denis Langlois, Richard Molstad, Yung Yip
  • Publication number: 20050201017
    Abstract: In general, the invention provides a magnetic head device and linear tape drive that increase the resonant frequency and the range of a servo system. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic head elements that is a structural part of the fine positioning system which allows the magnetic head elements follow the data tracks on the linear magnetic tape. Consequently, weight is reduced thereby increasing the resonant frequency and servo bandwidth. In another embodiment, the invention provides a magnetic head comprising bimodal actuators that are formed into an S shape and displaced by applying voltage where the polarization direction is opposite from one end to the other. In particular, the head chip may remain stable and may be driven dynamically thereby allowing the mechanical resonance of the bimodal actuator (including the head chip) to increase to 1 kHz or higher.
    Type: Application
    Filed: January 24, 2005
    Publication date: September 15, 2005
    Inventors: Hirohisa Koga, Takashi Abe, Yoshihiko Ito, James Anderson, Denis Langlois
  • Publication number: 20050185344
    Abstract: In general, the invention provides a magnetic head device and linear tape drive that widen the high frequency side of the servo range. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic elements arranged for recording or playback of multiple tracks and a fine positioning structure that uses a bimodal construction that may widen the high frequency side of the servo range by increasing the resonant frequency of the magnetic head chip including the tracking structure and lowering the Q value of the resonance point. In addition, the invention includes a damping structure suitable for the fine positioning structure that improves high speed response by widening the range in which the magnetic head device can be used for a servo. The magnetic head device may use a linear tape drive method.
    Type: Application
    Filed: January 24, 2005
    Publication date: August 25, 2005
    Inventors: Yoshihiko Ito, Hirohisa Koga, Takashi Abe, James Anderson, Denis Langlois
  • Publication number: 20050152067
    Abstract: The invention provides a system comprising a non-linear array of magnetoresistive (MR) heads arranged in a two-dimensional matrix for reading information stored on magnetic media. The non-linear array of MR heads may comprise a planar array formed by a plurality of linear arrays of MR heads stacked to define a plurality of layers. Each of the linear arrays may share at least one shield element with another linear array of the non-linear array. In general, each layer is offset by one written track pitch and the number of layers of the invention is equal to the number of written track pitches in a channel pitch. The invention can also be used in a system for reading and writing information to magnetic media at improved track pitches relative to conventional read/write systems. Accordingly, the invention can facilitate increased storage densities on magnetic media and may have advantages in terms of quality of readout and ease of manufacture relative to magneto-optical read heads or other read heads.
    Type: Application
    Filed: December 14, 2004
    Publication date: July 14, 2005
    Inventors: Yung Yip, James Anderson, Douglas Johnson, Denis Langlois, Richard Molstad
  • Publication number: 20030166511
    Abstract: A cardioprotective composition for protecting heart against oxidative stress and methods for using and preparing the same. More particularly, the cardioprotective composition of the invention comprises a mixture of pyruvate, antioxidant, fatty acids and ceruloplasmin. The cardioprotective composition could be used for the treatment of heart attack/failure, the treatment of ischemic cardiopathy, the conservation of heart before and during transplantation, and the treatment heart oxidative stress related conditions.
    Type: Application
    Filed: November 5, 2001
    Publication date: September 4, 2003
    Applicant: GESTILAB INC.
    Inventors: Mircea Alexandru Mateescu, Joanne Paquin, Denis Langlois, Mhamed Aouffen
  • Publication number: 20020123525
    Abstract: A cardioprotective composition for protecting heart against oxidative stress and methods for using and preparing the same. More particularly, the cardioprotective composition of the invention comprises a mixture of pyruvate, antioxidant, and lipid(s) such as fatty acids. The cardioprotective composition could be used for the treatment of heart attack/failure, the treatment of ischemic cardiopathy, the conservation of heart before and during transplantation, and the treatment heart oxidative stress related conditions.
    Type: Application
    Filed: November 5, 2001
    Publication date: September 5, 2002
    Applicant: GESTILAB INC.
    Inventors: Mircea Alexandru Mateescu, Joanne Paquin, Denis Langlois, Xintao Wang, Mhamed Aouffen