Patents by Inventor Geoffrey Foote
Geoffrey Foote 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: 8243033Abstract: A low-cost x-y digitizing system for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.Type: GrantFiled: March 3, 2009Date of Patent: August 14, 2012Assignee: Synaptics (UK) LimitedInventors: David T. E. Ely, Geoffrey Foote, Julian Haines, Gareth J. McCaughan
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Publication number: 20090184940Abstract: A low-cost x-y digitizing system for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.Type: ApplicationFiled: March 3, 2009Publication date: July 23, 2009Applicant: Synaptics (UK) LimitedInventors: Christopher J. Silk, David T.E. Ely, Andrew M. Errington, Ian Collins, Geoffrey Foote, Julian Haines, Robert Bolender, Gareth J. McCaughan
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Patent number: 7511705Abstract: A low cost x-y digitizing system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.Type: GrantFiled: May 21, 2002Date of Patent: March 31, 2009Assignee: Synaptics (UK) LimitedInventors: Christopher J. Silk, David T. E. Ely, Andrew Errington, Ian Collins, Geoffrey Foote, Julian Haines, Robert J. Bolender, Gareth J. McCaughan
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Patent number: 7406393Abstract: A low cost x-y digitising system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitiser includes a resonant stylus, an excitation winding for energising the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitiser windings and novel excitation and processing circuitry.Type: GrantFiled: November 22, 2002Date of Patent: July 29, 2008Assignee: Synaptics (UK) LimitedInventors: David Thomas Eliot Ely, Gareth John McCaughan, Geoffrey Foote
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Publication number: 20050171714Abstract: A low cost x-y digitising system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitiser includes a resonant stylus, an excitation winding for energising the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitiser windings and novel excitation and processing circuitry.Type: ApplicationFiled: November 22, 2002Publication date: August 4, 2005Applicant: SYNAPTICS (UK) LIMITEDInventors: David Ely, Gareth McCaughan, Geoffrey Foote
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Patent number: 6904570Abstract: A user interface of a smart compact device employs a combination comprising a display screen in combination with an activating object that is capable of reporting X and Y position information in a first state and a second state. Selected data is displayed or hidden depending on whether the first state or second state is detected.Type: GrantFiled: June 7, 2001Date of Patent: June 7, 2005Assignee: Synaptics, Inc.Inventors: Geoffrey Foote, David W. Gillespie
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Publication number: 20040233178Abstract: A low cost x-y digitising system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitiser includes a resonant stylus, an excitation winding for energising the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitiser windings and novel excitation and processing circuitry.Type: ApplicationFiled: May 6, 2004Publication date: November 25, 2004Inventors: Christopher J Silk, David T E Ely, Andrew Errington, Ian Collins, Geoffrey Foote, Julian Haines, Robert Bolender, Gareth J McCaughan
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Publication number: 20030160808Abstract: A user interface of a smart compact device employs a combination comprising a display screen in combination with an activating object that is capable of reporting X and Y position information in a first state and a second state. Selected data is displayed or hidden depending on whether the first state or second state is detected.Type: ApplicationFiled: June 7, 2001Publication date: August 28, 2003Applicant: Synaptics, Inc.Inventors: Geoffrey Foote, David W. Gillespie
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Patent number: 6304014Abstract: An electric motor is described in which a position sensor is provided which generates a plurality of output signals each dependent upon the relative position of the rotor and the stator. These signals are processed to generate a set of commutation control signals for controlling the commutation of the drive current to the stator coils. In one embodiment, a phase shift can be electronically applied to each of the position sensor coils to adjust the timing of the switching in accordance with the motor's current speed and load demands. In another embodiment, these signals are also used in a servo-control loop, in order to control, for example, the speed and/or output torque of the motor.Type: GrantFiled: June 8, 2000Date of Patent: October 16, 2001Assignee: Synaptics (UK) LimitedInventors: James M. C. England, Andrew N. Dames, David T. E. Ely, Malcolm Burwell, Geoffrey Foote
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Patent number: RE47676Abstract: A user interface of a smart compact device employs a combination comprising a display screen in combination with an activating object that is capable of reporting X and Y position information in a first state and a second state. Selected data is displayed or hidden depending on whether the first state or second state is detected.Type: GrantFiled: October 24, 2013Date of Patent: October 29, 2019Assignee: WACOM CO., LTD.Inventors: Geoffrey Foote, David W. Gillespie