Patents by Inventor Francis K. King
Francis K. King 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: 20080267047Abstract: A method of producing data storage card for storage of machine-readable information includes an optical memory area subjected to optical information recording and reproduction, comprising, a card-like card body, an optical recording portion provided on the card body. A method of combining a file access system with a write once optical data card produces a secure portable database system.Type: ApplicationFiled: April 26, 2007Publication date: October 30, 2008Inventors: Francis K. King, Jeffrey F. Liu
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Patent number: 7334733Abstract: This invention discloses a data card that has a plurality of data arcs and also a linear data track, e.g., a magnetic or optical data strip, disposed on a flat data storage medium. The data card may be employed as a credit card or ID card with conventional magnetic strip for storing conventional data operable with conventional card reader. The data arc segments may be employed to store additional information for authenticating cardholder's personal biometrics information to prevent credit card or ID card frauds. In one embodiment, the data tracks further include at least one full circle data track provided with data for conveniently determining a central position of the data card in a data drive system. The data stored in the full circle data track can also be conveniently used to obtain a measurement of average signal amplitude to calibrate the signal measurements from the data card. The dynamic head loading and unloading configuration and a card insertion lock.Type: GrantFiled: April 28, 2003Date of Patent: February 26, 2008Assignee: Dcard, Inc.Inventors: Francis K. King, Jeffrey Liu
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Patent number: 7336569Abstract: The invention pertains to an improvement for a tracking and focusing servo and defect management circuit that controls the tracking and focusing of an optical head on an optical media in an apparatus for reproducing a data, sound or image recorded on the optical media. The invention characterizes by the provision of a circuit for managing modulation of an RF signal from the optical pickup head caused when the optical pickup head encounters a non-continuous track in segment arrangement or a very long extended defect such as a extended flaw in the disc resulted discontinuous track segment thereon, and an adjusting circuit which manages the loop gain of the tracking servo circuit per the track arrangement of defect detection and a tracking profile, whereby the responsiveness of the optical pickup head is improved and track skipping prevented or recovered.Type: GrantFiled: July 9, 2004Date of Patent: February 26, 2008Assignee: Dcard, Inc.Inventors: Francis K. King, Jeffrey Liu
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Patent number: 7185814Abstract: This invention discloses an optical memory strip and a data card that has at least an optical memory strip as a cutoff piece bonding and attaching to the data card for storing data accessible with an optical read/write head. The data card can further includes at least a magnetic data track for storing data accessible with a magnetic data read/write head. In another data card of this invention, it further includes a semiconductor data storage card for storing data that is accessible by using a semiconductor chip data read/write device.Type: GrantFiled: February 17, 2004Date of Patent: March 6, 2007Assignee: Dcard, Inc.Inventors: Jeffrey Liu, Francis K. King
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Patent number: 6934098Abstract: This invention discloses a flat data storage medium that includes a plurality of substantially parallel data arc-segments. The data arcs further include at least one full circle data track provided for obtaining a measurement of an average amplitude of data signals over the full circle data track for calibrating a pickup head implemented for reading data from the data arc-segments. This invention further discloses a data storage system for accessing data stored in a data storage medium. The data storage system includes dynamic head loading/unloading system that includes a handle for pushing a linkage connected to the handle for loading and unloading the data storage medium to an engaged and disengaged positions relative to a pickup head for accessing data disposed on the data storage medium. The dynamic head loading/unloading system further includes a locking mechanism for automatically locking the data storage medium inside the data storage system when the linkage is disposed at an engaged-position.Type: GrantFiled: October 1, 2001Date of Patent: August 23, 2005Assignee: DCARD, Inc.Inventors: Francis K. King, Jeffrey F. Liu, Shand-Ling Mao
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Publication number: 20040218518Abstract: A multiple layer data storage card for storage of machine-readable information includes an optical memory area subjected to optical information recording and reproduction, comprising, a card-like card body, an optical recording portion provided on said card body, and optionally a conventional magnetic data stripe area, and a smart card IC area. The optical memory area including an optionally pre-recorded data area and a recordable area all with pre-grooved track segment arrangement for logical data recording and retrieving.Type: ApplicationFiled: June 7, 2004Publication date: November 4, 2004Applicant: DCARD, INC.Inventors: Jeffrey Liu, Francis K. King
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Publication number: 20040159707Abstract: This invention discloses an optical memory strip and a data card that has at least an optical memory strip as a cutoff piece bonding and attaching to the data card for storing data accessible with an optical read/write head. The data card can further includes at least a magnetic data track for storing data accessible with a magnetic data read/write head.Type: ApplicationFiled: February 17, 2004Publication date: August 19, 2004Applicant: DCARD, INC.Inventors: Jeffrey Liu, Francis K. King
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Patent number: 6775080Abstract: This invention discloses a data access system for access data stored on a flat medium. The data access system includes a pickup head rotating over the flat medium. The data access system further includes at least one stepping motor for discretely moving the flat medium substantially along at least one lateral direction perpendicular to a rotational axis of the pickup head. The data access system further includes a closed loop control mechanism for controlling the stepping motor for allowing the pickup head to read data from a servo segment on the flat medium. The controller further includes an open loop control mechanism for rotating the pickup head for reading data from and writing data to a data segment disposed right next to the servo segment on the flat medium.Type: GrantFiled: January 29, 2001Date of Patent: August 10, 2004Assignee: DCARD, Inc.Inventors: Francis K. King, Jeffrey F. Liu
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Patent number: 6728059Abstract: This invention discloses a magnetic servo writer. The magnetic servo writer includes a magnetic pickup head for rotationally moving over and writing servo data in a magnetic flat data-storage medium. The magnetic servo writer further includes a clock head for providing clock signals to the pickup head and to write clock signals in the clock disk. The magnetic servo writer further includes a control circuit for controlling the magnetic pickup head for writing the servo data on the magnetic flat data-storage medium. The magnetic servo writer further includes a servo pattern layout circuit for controlling the magnetic pickup head for writing the servo data on the magnetic flat data-storage medium with predefined servo patterns. The magnetic servo writer further includes a derived index control circuit for deriving indices from a fixed index provided on the magnetic flat data-storage medium.Type: GrantFiled: July 8, 2002Date of Patent: April 27, 2004Assignee: Dcard, Inc.Inventors: Jeffrey F. Liu, Francis K. King
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Publication number: 20040076105Abstract: This invention discloses a data card that has a plurality of data arcs and also a linear data track, e.g., a magnetic or optical data strip, disposed on a flat data storage medium. The data card may be employed as a credit card or ID card with conventional magnetic strip for storing conventional data operable with conventional card reader. The data arc segments may be employed to store additional information for authenticating cardholder's personal biometrics information to prevent credit card or ID card frauds. In one embodiment, the data tracks further include at least one full circle data track provided with data for conveniently determining a central position of the data card in a data drive system. The data stored in the full circle data track can also be conveniently used to obtain a measurement of average signal amplitude to calibrate the signal measurements from the data card. The dynamic head loading and unloading configuration and a card insertion lock.Type: ApplicationFiled: April 28, 2003Publication date: April 22, 2004Applicant: DCARD, INC.Inventors: Francis K. King, Jeffrey Liu
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Patent number: 6588671Abstract: This invention is a data storage system for accessing data stored in a data storage medium. The data storage system includes a motor-head assembly controlled to activate a vertical movement for loading and unloading at least a pickup head supported thereon to access the data medium in the data storage medium. For a specific data-storage system configuration, the motor-head assembly further includes a rotating motor for rotating the pickup head when the pickup head is loaded onto the data storage medium. In another system configuration, the data storage system implemented with a motor to move the data storage medium in at least one linear direction or for rotating the data storage medium. The motor-head assembly further includes a vertical-position locking hook for automatically pulling away the pickup head from the data storage media when the motor-head assembly is unloaded from the data storage medium.Type: GrantFiled: August 3, 2001Date of Patent: July 8, 2003Assignee: Dcard, Inc.Inventors: Francis K. King, Jeffrey Liu, Shand-Ling Mao
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Patent number: 6545831Abstract: This invention discloses a plurality of substantially parallel data arcs disposed on a flat data storage medium. The data arcs include at least two linearly aligned servo-data fields disposed in an inner data arc and an outer data arc with an inter-arc distance. The servo data field disposed on the outer data arc is disposed with an offset from an identical radial-angle position projected from a radial center to the servo data field of the inner data arc. The offset is substantially proportional to the inter-arc distance and substantially proportional to SIN (&thgr;) where &thgr; is an angle between the identical radial-angle position and a linear-alignment direction between the two linearly aligned servo-data fields. Furthermore, the servo-data field on the outer data arc is disposed at a location with the offset from the identical radial-angle position in a direction toward a smaller radial angle projected from the radial center to the servo data field of the inner data arc.Type: GrantFiled: October 11, 2000Date of Patent: April 8, 2003Assignee: DCARD, Inc.Inventor: Francis K. King
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Patent number: 6502755Abstract: The optical data-storage card includes an optical data-storage medium layer supported on the card. The data-storage medium layer includes a plurality of data storage tracks for storing data therein. Each of the tracks having at least an arc-segment wherein each of the data storage tracks being substantially parallel to a neighboring track.Type: GrantFiled: April 9, 1999Date of Patent: January 7, 2003Assignee: DCARD, Inc.Inventors: Jeffrey F. Liu, Francis K. King
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Patent number: 6499659Abstract: This invention discloses a data storage drive system. The system includes a pickup head for performing data access functions connected to a secondary winding of a transformer. The transformer further includes a primary winding connected to a driver controller provided with a pre-amplifier for generating a data writing pulse. The secondary winding further having an pulse decay-constant adjustment capacitor and a pulse decay-constant adjustment inductor for adjusting a pulse decay constant for generating less than ten-percent sag for the data writing pulse whereby the writing pulse can overwrite an entire bit-length onto a data track In a preferred embodiment, the pickup head and the secondary winding are configured as a removable and replaceable module. In a preferred embodiment, the pickup head is provided with signal reading and writing head for a magnetic or optical flat data-storage medium.Type: GrantFiled: November 3, 1999Date of Patent: December 31, 2002Assignee: DCARD, Inc.Inventors: Francis K. King, Ranvir Koshal
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Publication number: 20020186495Abstract: This invention discloses a magnetic servo writer. The magnetic servo writer includes a magnetic pickup head for rotationally moving over and writing servo data in a magnetic flat data-storage medium. The magnetic servo writer further includes a clock head for providing clock signals to the pickup head and to write clock signals in the clock disk. The magnetic servo writer further includes a control circuit for controlling the magnetic pickup head for writing the servo data on the magnetic flat data-storage medium. The magnetic servo writer further includes a servo pattern layout circuit for controlling the magnetic pickup head for writing the servo data on the magnetic flat data-storage medium with predefined servo patterns. The magnetic servo writer further includes a derived index control circuit for deriving indices from a fixed index provided on the magnetic flat data-storage medium.Type: ApplicationFiled: July 8, 2002Publication date: December 12, 2002Applicant: DCARD, INC.Inventors: Jeffrey F. Liu, Francis K. King
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Publication number: 20020138808Abstract: This invention discloses a flat data storage medium that includes a plurality of substantially parallel data arc-segments. The data arcs further include at least one full circle data track provided for obtaining a measurement of an average amplitude of data signals over the full circle data track for calibrating a pickup head implemented for reading data from the data arc-segments. This invention further discloses a data storage system for accessing data stored in a data storage medium. The data storage system includes dynamic head loading/unloading system that includes a handle for pushing a linkage connected to the handle for loading and unloading the data storage medium to an engaged and disengaged positions relative to a pickup head for accessing data disposed on the data storage medium. The dynamic head loading/unloading system further includes a locking means for automatically locking the data storage medium inside the data storage system when the linkage is disposed at an engaged-position.Type: ApplicationFiled: October 1, 2001Publication date: September 26, 2002Applicant: DCARD, INC.Inventors: Francis K. King, Jeffrey F. Liu, Shand-Ling Mao
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Publication number: 20020104882Abstract: This invention discloses an optical data-card drive system. The drive system includes an optical pickup head for rotationally moving over and accessing data stored in the optical data-card. The optical pickup head is provided for reading data from and writing data to the optical data card. The optical pickup head may be applied for accessing data over substantially one-half of the rotational movement. In another preferred embodiment, the optical pickup head is applied for accessing data over several arc-segments during the rotational movement. The optical pickup head may be design for rotating in a single rotational direction, or for rotating in clockwise and counterclockwise directions. Furthermore, the optical pickup head may be designed for rotating over arc segment having radius smaller than half-width of the optical data card, or for rotating over an arc segment having a radius greater than half-width of the optical data card.Type: ApplicationFiled: April 9, 1999Publication date: August 8, 2002Inventors: JEFFREY F. LIU, FRANCIS K. KING
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Patent number: 6417980Abstract: This invention discloses a magnetic servo writer. The magnetic servo writer includes a magnetic pickup head for rotationally moving over and writing servo data in a magnetic flat data-storage medium. The magnetic servo writer further includes a clock head for providing clock signals to the pickup head and to write clock signals in the clock disk. The magnetic servo writer further includes a control circuit for controlling the magnetic pickup head for writing the servo data on the magnetic flat data-storage medium. The magnetic servo writer further includes a servo pattern layout circuit for controlling the magnetic pickup head for writing the servo data on the magnetic flat data-storage medium with predefined servo patterns. The magnetic servo writer further includes a derived index control circuit for deriving indices from a fixed index provided on the magnetic flat data-storage medium.Type: GrantFiled: April 9, 1999Date of Patent: July 9, 2002Assignee: Dcard, Inc.Inventors: Jeffrey F. Liu, Francis K. King
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Publication number: 20020014534Abstract: An optical data-card is disclosed in this invention. The optical data-storage card includes an optical data-storage medium layer supported on the card. The data-storage medium layer includes a plurality of data storage tracks for storing data therein. Each of the tracks comprising at least an arc-segment wherein each of the data storage tracks being substantially parallel to a neighboring track.Type: ApplicationFiled: April 9, 1999Publication date: February 7, 2002Inventors: JEFFREY F. LIU, FRANCIS K. KING
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Publication number: 20020005432Abstract: This invention discloses a data storage system for accessing data stored in a data storage medium. The data storage system includes a motor-head assembly controlled to activate a vertical movement for loading and unloading at least a pickup head supported thereon to access the data medium in the data storage medium. For a specific data-storage system configuration, the motor-head assembly further includes a rotating motor for rotating the pickup head when the pickup head is loaded onto the data storage medium. In another system configuration, the data storage system implemented with a motor to move the data storage medium in at least one linear direction or for rotating the data storage medium. The motor-head assembly further includes a vertical-position locking hook for automatically pulling away the pickup head from the data storage media when the motor-head assembly is unloaded from the data storage medium.Type: ApplicationFiled: August 3, 2001Publication date: January 17, 2002Applicant: DCARD, INC.Inventors: Francis K. King, Jeffrey Liu, Shand-Ling Mao