Patents by Inventor James Dahlberg
James Dahlberg 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: 20060177835Abstract: The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.Type: ApplicationFiled: July 15, 2005Publication date: August 10, 2006Inventors: James Prudent, Jeff Hall, Victor Lyamichev, Mary Brow, James Dahlberg
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Publication number: 20060154269Abstract: The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.Type: ApplicationFiled: July 15, 2005Publication date: July 13, 2006Inventors: James Prudent, Jeff Hall, Victor Lyamichev, Mary Ann Brow, James Dahlberg
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Patent number: 7068460Abstract: A disk drive emergency retract architecture for providing power to a voice coil motor (VCM) to retract a transducing head from a surface of a recordable medium during loss of power from an external power supply. The disk drive emergency retract architecture comprises a spindle motor, having an internal inductance and an internal resistance, for spinning the recordable medium. The spinning recordable medium creates a back electromotive force (BEMF) in the spindle motor. A boost circuit transfers the back electromotive force located in the spindle motor to a capacitor which stores and supplies power to the VCM. The capacitor is connected to a power switch circuit, which supplies power from the capacitor to the VCM when the power switch circuit is in a conducting state and prevents power from being supplied to by the capacitor to the VCM when the power switch circuit is in a non-conducting state.Type: GrantFiled: September 30, 2004Date of Patent: June 27, 2006Assignee: Agere Systems Inc.Inventors: Jason P. Brenden, James A. Dahlberg
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Publication number: 20060110750Abstract: The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.Type: ApplicationFiled: September 9, 2005Publication date: May 25, 2006Inventors: James Prudent, Jeff Hall, Victor Lyamichev, Mary Brow, James Dahlberg
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Patent number: 7042672Abstract: A control circuit controls current through a voice coil motor (VCM) during retraction of a transducing head from the surface of a recordable medium. The transducing head is carried on movable member actuated by the VCM. The control circuit includes a measuring circuit for measuring a back electromotive force (back EMF) from the VCM. The control circuit also includes a driver circuit connected to terminals of the VCM for providing the VCM with a drive current having a magnitude based on the back EMF from the VCM. The control circuit further includes a chop clock to alternate between measuring the back EMF from the VCM and providing the VCM with the drive current at a random frequency within a range of frequencies around a median frequency.Type: GrantFiled: September 30, 2004Date of Patent: May 9, 2006Assignee: Agere Systems Inc.Inventors: Jason P. Brenden, James A. Dahlberg
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Publication number: 20060066980Abstract: A control apparatus controls retraction of a device carried on a moveable member actuated by an electric motor after a sudden power loss. The control apparatus includes a measuring circuit for measuring a back electromotive force (back EMF) from the electric motor during a measuring phase. The control apparatus also includes a controller which receives the actual velocity and provides a command signal for controlling a magnitude of the drive current based on a commanded velocity and the actual velocity of the moveable member. The control apparatus further comprises a current control loop for providing a command current signal based on the current provided to the electric motor and the command signal, and for providing the electric motor with the drive current during a driving phase based on the command current signal.Type: ApplicationFiled: September 30, 2004Publication date: March 30, 2006Applicant: Agere Systems Inc.Inventors: Jason Brenden, James Dahlberg
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Publication number: 20060066281Abstract: A control apparatus controls retraction of a device carried on a moveable member actuated by an electric motor. The control apparatus includes a measuring circuit with an output during a measuring phase including a back electromotive force (back EMF) from the electric motor plus a measuring circuit offset voltage. The control apparatus also includes an offset removing circuit connected to the output of the measuring circuit. The back EMF from the electric motor is provided at the output of the offset removing circuit. A driver circuit is connected to terminals of the electric motor for providing the electric motor with a drive current during a driving phase with a magnitude based on the back EMF from the electric motor.Type: ApplicationFiled: September 30, 2004Publication date: March 30, 2006Applicant: Agere Systems Inc.Inventors: Jason Brenden, James Dahlberg
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Publication number: 20060066279Abstract: A motor controller provides pulse width modulated drive signals to a motor. A digital demand code for controlling motor speed is input to the motor controller. A dither generator generates a digital dither value, which an adder adds to the demand code to generate a dithered demand code. A position determining circuit determines a rotational position of the motor. A pulse width modulation controller generates pulse width modulated drive signals with duty cycles controlled as a function of a stored set of waveform coefficients, the dithered demand code, and the rotational position of the motor.Type: ApplicationFiled: September 30, 2004Publication date: March 30, 2006Applicant: Agere Systems Inc.Inventors: Jason Brenden, James Dahlberg, Jaydip Bhaumik
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Publication number: 20060066981Abstract: A control circuit controls current through a voice coil motor (VCM) during retraction of a transducing head from the surface of a recordable medium. The transducing head is carried on movable member actuated by the VCM. The control circuit includes a measuring circuit for measuring a back electromotive force (back EMF) from the VCM. The control circuit also includes a driver circuit connected to terminals of the VCM for providing the VCM with a drive current having a magnitude based on the back EMF from the VCM. The control circuit further includes a chop clock to alternate between measuring the back EMF from the VCM and providing the VCM with the drive current at a random frequency within a range of frequencies around a median frequency.Type: ApplicationFiled: September 30, 2004Publication date: March 30, 2006Applicant: Agere Systems Inc.Inventors: Jason Brenden, James Dahlberg
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Publication number: 20060068383Abstract: The present invention relates to means for cleaving a nucleic acid cleavage structure in a site-specific manner. Enzymes, including 5? nucleases and 3? exonucleases, are used to detect and identify nucleic acids derived from microorganisms. Methods are provided which allow for the detection and identification of bacterial and viral pathogens in a sample.Type: ApplicationFiled: August 28, 2001Publication date: March 30, 2006Inventors: James Dahlberg, Mary Brow, Victor Lyamichev
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Patent number: 7012396Abstract: A motor controller provides pulse width modulated drive signals to a motor. A digital demand code for controlling motor speed is input to the motor controller. A dither generator generates a digital dither value, which an adder adds to the demand code to generate a dithered demand code. A position determining circuit determines a rotational position of the motor. A pulse width modulation controller generates pulse width modulated drive signals with duty cycles controlled as a function of a stored set of waveform coefficients, the dithered demand code, and the rotational position of the motor.Type: GrantFiled: September 30, 2004Date of Patent: March 14, 2006Assignee: Agere Systems Inc.Inventors: Jason P. Brenden, James A. Dahlberg, Jaydip Bhaumik
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Publication number: 20060040299Abstract: The present invention relates to means for cleaving a nucleic acid cleavage structure in a site-specific manner. Enzymes, including 5? nucleases and 3? exonucleases, are used to detect and identify nucleic acids derived from microorganisms. Methods are provided which allow for the detection and identification of bacterial and viral pathogens in a sample.Type: ApplicationFiled: August 5, 2005Publication date: February 23, 2006Inventors: James Dahlberg, Mary Ann Brow, Victor Lyamichev
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Publication number: 20060040294Abstract: The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.Type: ApplicationFiled: July 15, 2005Publication date: February 23, 2006Inventors: James Prudent, Jeff Hall, Victor Lyamichev, Mary Brow, James Dahlberg
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Publication number: 20060035256Abstract: The present invention relates to means for cleaving a nucleic acid cleavage structure in a site-specific manner. Enzymes, including 5? nucleases and 3? exonucleases, are used to detect and identify nucleic acids derived from microorganisms. Methods are provided which allow for the detection and identification of bacterial and viral pathogens in a sample.Type: ApplicationFiled: August 5, 2005Publication date: February 16, 2006Inventors: James Dahlberg, Mary Ann Brow, Victor Lyamichev
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Publication number: 20060035257Abstract: The present invention relates to means for cleaving a nucleic acid cleavage structure in a site-specific manner. Enzymes, including 5? nucleases and 3? exonucleases, are used to detect and identify nucleic acids derived from microorganisms. Methods are provided which allow for the detection and identification of bacterial and viral pathogens in a sample.Type: ApplicationFiled: August 5, 2005Publication date: February 16, 2006Inventors: James Dahlberg, Mary Brow, Victor Lyamichev
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Publication number: 20060007581Abstract: A disk drive emergency retract architecture for providing power to a voice coil motor (VCM) to retract a transducing head from a surface of a recordable medium during loss of power from an external power supply. The disk drive emergency retract architecture comprises a spindle motor, having an internal inductance and an internal resistance, for spinning the recordable medium. The spinning recordable medium creates a back electromotive force (BEMF) in the spindle motor. A boost circuit transfers the back electromotive force located in the spindle motor to a capacitor which stores and supplies power to the VCM. The capacitor is connected to a power switch circuit, which supplies power from the capacitor to the VCM when the power switch circuit is in a conducting state and prevents power from being supplied to by the capacitor to the VCM when the power switch circuit is in a non-conducting state.Type: ApplicationFiled: September 30, 2004Publication date: January 12, 2006Applicant: Agere Systems Inc.Inventors: Jason Brenden, James Dahlberg
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Patent number: 6940768Abstract: A double data rate (DDR) synchronous dynamic RAM (SDRAM), or DDR-SDRAM, memory controller employing a delay locked loop (DLL) circuit to delay an SDRAM data strobe (DQS) signal to the center, or ‘eye’ of the read data window. However, in distinction from conventional techniques, the initial delay determined by the DLL is fine tuned with an offset determined by a memory test. Moreover, in an additional embodiment, the delay may be further adjusted during operation to compensate for environmental conditions by a PVT (process, value, temperature) circuit.Type: GrantFiled: November 4, 2003Date of Patent: September 6, 2005Assignee: Agere Systems Inc.Inventors: James A. Dahlberg, Obed Duardo
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Publication number: 20050181435Abstract: The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.Type: ApplicationFiled: April 12, 2005Publication date: August 18, 2005Applicant: Third Wave Technologies, Inc.Inventors: James Prudent, Jeff Hall, Victor Lyamichev, Mary Brow, James Dahlberg
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Publication number: 20050158716Abstract: The present invention relates to means for cleaving a nucleic acid cleavage structure in a site-specific manner. Enzymes, including 5? nucleases and 3? exonucleases, are used to detect and identify nucleic acids derived from microorganisms. Methods are provided which allow for the detection and identification of bacterial and viral pathogens in a sample.Type: ApplicationFiled: April 8, 2003Publication date: July 21, 2005Applicant: Third Wave Technologies, Inc.Inventors: James Dahlberg, Mary Brow, Victor Lyamichev
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Publication number: 20050105349Abstract: A double data rate (DDR) synchronous dynamic RAM (SDRAM), or DDR-SDRAM, memory controller employing a delay locked loop (DLL) circuit to delay an SDRAM data strobe (DQS) signal to the center, or ‘eye’ of the read data window. However, in distinction from conventional techniques, the initial delay determined by the DLL is fine tuned with an offset determined by a memory test. Moreover, in an additional embodiment, the delay may be further adjusted during operation to compensate for environmental conditions by a PVT (process, value, temperature) circuit.Type: ApplicationFiled: November 4, 2003Publication date: May 19, 2005Inventors: James Dahlberg, Obed Duardo