Patents by Inventor Mark Casebolt
Mark Casebolt 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: 9437935Abstract: A dual band printed antenna pair operates simultaneously at both WLAN frequency bands (2.4 GHz/5 GHz). The antenna pair provides high isolation between both antennas while having an efficient over the air performance. The antenna pair achieve greater than 20 dB isolation at 2.4 GHz and 5 GHz band, while having antennas positioned in close proximity. The high isolation is accomplished using an orthogonal antenna configuration (exploiting orthogonal polarization) and a parasitic element to further enhance isolation at 2.4 GHz. The antenna pair and parasitic element are printed on a Printed Circuit Board (PCB) adding relatively little cost to the Radio Frequency (RF) interface. The PCB is then fixed on top of a metal chassis with the antenna keep out area overhanging a corner of the metal chassis to enhance performance.Type: GrantFiled: February 27, 2013Date of Patent: September 6, 2016Assignee: Microsoft Technology Licensing, LLCInventors: Javier R. DeLuis, Alireza Mahanfar, Benjamin Shewan, Mark Casebolt, Jeff Reents
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Patent number: 9433090Abstract: An edge plated printed circuit board (PCB) improves radiated emission performance by enhancing ground shielding on the PCB and improving the physical and electrical connection between the PCB and external EMI suppression components including an EMI chassis and gaskets. Inner ground layers within a multi-layer PCB are configured to physically extend to an edge of the PCB, which is plated using copper electroplating, so that copper ground strips disposed at the top and bottom surfaces of the PCB and the inner ground layers are all electrically coupled to the plated edge. In some embodiments, the ground strips can be made thinner compared to conventional arrangements, or be eliminated altogether as a result of the direct connection between the edge plated PCB and external EMI shields.Type: GrantFiled: March 25, 2014Date of Patent: August 30, 2016Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Peter Atkinson, Chee Fong, Mark Casebolt, Ying Liang
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Publication number: 20150282298Abstract: An edge plated printed circuit board (PCB) improves radiated emission performance by enhancing ground shielding on the PCB and improving the physical and electrical connection between the PCB and external EMI suppression components including an EMI chassis and gaskets. Inner ground layers within a multi-layer PCB are configured to physically extend to an edge of the PCB, which is plated using copper electroplating, so that copper ground strips disposed at the top and bottom surfaces of the PCB and the inner ground layers are all electrically coupled to the plated edge. In some embodiments, the ground strips can be made thinner compared to conventional arrangements, or be eliminated altogether as a result of the direct connection between the edge plated PCB and external EMI shields.Type: ApplicationFiled: March 25, 2014Publication date: October 1, 2015Applicant: Microsoft CorporationInventors: Peter Atkinson, Chee Fong, Mark Casebolt, Ying Liang
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Patent number: 9043875Abstract: An optical disc drive (ODD) includes a radio-frequency identification (RFID) reader. The reader includes a circuit and a coil antenna which has a rotational symmetry with respect to a rotation axis of a motor, shaft and turntable of the ODD. The coil antenna can be secured to a wall of a housing of the ODD or around the motor and/or shaft. The reader can read an RFID tag on an optical disc. The RFID tag includes a circuit and a coil antenna which has a rotational symmetry with respect to the disc. As a result, the RFID tag can be read while the disc is rotating. A magnetic insulating material such as a ferrite polymer composite film is used to magnetically insulate the coil antenna. An authentication code can be read from the RFID tag to control access to content of the optical disc.Type: GrantFiled: March 1, 2013Date of Patent: May 26, 2015Assignee: Microsoft Technology Licensing, LLCInventors: Alireza Mahanfar, Benjamin Shewan, Remy Carole, Mark Casebolt, Tse-Ching Yu, Jeffrey Griffis, Javier Rodriguez De Luis
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Publication number: 20140250495Abstract: An optical disc drive (ODD) includes a radio-frequency identification (RFID) reader. The reader includes a circuit and a coil antenna which has a rotational symmetry with respect to a rotation axis of a motor, shaft and turntable of the ODD. The coil antenna can be secured to a wall of a housing of the ODD or around the motor and/or shaft. The reader can read an RFID tag on an optical disc. The RFID tag includes a circuit and a coil antenna which has a rotational symmetry with respect to the disc. As a result, the RFID tag can be read while the disc is rotating. A magnetic insulating material such as a ferrite polymer composite film is used to magnetically insulate the coil antenna. An authentication code can be read from the RFID tag to control access to content of the optical disc.Type: ApplicationFiled: March 1, 2013Publication date: September 4, 2014Applicant: MICROSOFT CORPORATIONInventors: Alireza Mahanfar, Benjamin Shewan, Remy Carole, Mark Casebolt, Tse-Ching Yu, Jeffrey Griffis, Javier Rodriguez De Luis
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Publication number: 20140242903Abstract: A dual band printed antenna pair operates simultaneously at both WLAN frequency bands (2.4 GHz/5 GHz). The antenna pair provides high isolation between both antennas while having an efficient over the air performance. The antenna pair achieve greater than 20 dB isolation at 2.4 GHz and 5 GHz band, while having antennas positioned in close proximity. The high isolation is accomplished using an orthogonal antenna configuration (exploiting orthogonal polarization) and a parasitic element to further enhance isolation at 2.4 GHz. The antenna pair and parasitic element are printed on a Printed Circuit Board (PCB) adding relatively little cost to the Radio Frequency (RF) interface. The PCB is then fixed on top of a metal chassis with the antenna keep out area overhanging a corner of the metal chassis to enhance performance.Type: ApplicationFiled: February 27, 2013Publication date: August 28, 2014Applicant: MICROSOFT CORPORATIONInventors: Javier R. DeLuis, Alireza Mahanfar, Benjamin Shewan, Mark Casebolt, Jeff Reents
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Publication number: 20060282556Abstract: A peripheral device is connectable to a computer having one of a first interface and a second interface. The first interface communicates with the peripheral device over a differential data connection having a first data conductor and a second data conductor. The second interface communicates with the peripheral device over a clock conductor and a single ended data connection which includes a data conductor. The peripheral device has first and second communication conductors configured for connection to the first and second data conductors in the differential data connection when the computer includes the first interface and is configured for connection to the first data conductor in the single ended data connection and the clock conductor when the computer is provided with the second interface.Type: ApplicationFiled: August 18, 2006Publication date: December 14, 2006Applicant: Microsoft CorporationInventors: Mark Hanson, Nathan Sherman, Lord Featherston, Mark Casebolt, Victor Drake, Keith Mullins, David Holo, Terry Lipscomb
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Publication number: 20050240785Abstract: Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a “scoop” capacitor formed by a conductor and a surrounding ground plane. Charge is transferred between the “scoop” capacitor and a relatively large “bucket” capacitor, and a voltage of the bucket capacitor is applied to an input threshold switch. A state transition (e.g., from low to high, or high to low) of the input threshold switch is detected and a value (TouchVal) indicative of a number of cycles of charge transfer required to reach the state transition is determined. The presence or absence of an object or body portion in close proximity to or contact with a device can be determined by comparing TouchVal with a predetermined threshold value (TouchOff). In order to lessen the time required for detection, and/or improve the sensitivity thereof, the bucket capacitor may initially be charged to a repeatable non-zero reference level closer to the charge level that will cause a state transition.Type: ApplicationFiled: June 30, 2005Publication date: October 27, 2005Applicant: Microsoft CorporationInventors: Mark Casebolt, Gary Rensberger, Steven Bathiche, Mihai Albulet
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Publication number: 20050200603Abstract: A proximity sensor measures receptor output with an energy source deactivated. The sensor then measures receptor output with the energy source activated. The measurements with the energy source activated are compared to the measurements with the energy source deactivated to compensate for the effect of ambient conditions. A near condition is recognized if the change between the two groups of measurements exceeds a designated value. To compensate for receptor output that may decrease after reaching a peak value during approach of an object, a near condition can be maintained until the change between the two groups of measurements no longer exceeds a different designated value. Multiple sensors can be used to avoid false near conditions caused by, e.g., placing a device equipped with the sensors next to a stationary object. In one embodiment, a sensor comprises an infrared light emitting diode and a phototransistor.Type: ApplicationFiled: February 11, 2005Publication date: September 15, 2005Applicant: Microsoft CorporationInventors: Mark Casebolt, Mark Lee
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Publication number: 20050190158Abstract: A computer input device controller dynamically adjusts the rate at which an illumination source is activated, and may also adjust the rate at which other optical tracking system components are activated. As the velocity of optical tracking system movement relative to a tracked surface increases, the controller increases the activation rate(s). As the velocity of relative movement decreases, the controller decreases the activation rate(s). Future displacements of a tracking system relative to a tracked surface are also estimated. In particular, relative tracking system/tracked surface velocity is calculated based on a series of images. Relative displacement is then estimated based on the calculated velocity.Type: ApplicationFiled: March 1, 2004Publication date: September 1, 2005Applicant: Microsoft CorporationInventors: Mark Casebolt, Mark Lee, Jeremiah Pope, James Marshall
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Publication number: 20050168438Abstract: Capacitive proximity sensing is carried out by detecting a relative change in the capacitance of a “scoop” capacitor formed by a conductor and a surrounding ground plane. The conductor may be a plate provided in the form of an adhesive label printed with conductive ink. Charge is transferred between the “scoop” capacitor and a relatively large “bucket” capacitor, and a voltage of the bucket capacitor is applied to an input threshold switch. A state transition (e.g., from low to high, or high to low) of the input threshold switch is detected and a value (TouchVal) indicative of a number of cycles of charge transfer required to reach the state transition is determined. The presence or absence of an object or body portion in close proximity to or contact with a device can be determined by comparing TouchVal with a predetermined threshold value (TouchOff). TouchOff can be adjusted to take into account environmentally induced (non-touch related) changes in the capacitance of the scoop capacitor.Type: ApplicationFiled: November 5, 2004Publication date: August 4, 2005Applicant: Microsoft CorporationInventors: Mark Casebolt, Gino Garcia
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Publication number: 20050146499Abstract: A proximity sensor measures receptor output with an energy source deactivated. The sensor then measures receptor output with the energy source activated. The measurements with the energy source activated are compared to the measurements with the energy source deactivated to compensate for the effect of ambient conditions. A near condition is recognized if the change between the two groups of measurements exceeds a designated value. To compensate for receptor output that may decrease after reaching a peak value during approach of an object, a near condition can be maintained until the change between the two groups of measurements no longer exceeds a different designated value. Multiple sensors can be used to avoid false near conditions caused by, e.g., placing a device equipped with the sensors next to a stationary object. In one embodiment, a sensor comprises an infrared light emitting diode and a phototransistor.Type: ApplicationFiled: February 11, 2005Publication date: July 7, 2005Applicant: Microsoft CorporationInventors: Mark Casebolt, Mark Lee
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Publication number: 20050078085Abstract: Power management is provided in a user operated data input device utilizing proximity sensing and switching between three or more power states. Switching between the power states occurs based upon the presence or absence of input activity, and an operation instrumentality (e.g., a hand) in close proximity to or contact with the device. Capacitive proximity sensing is carried out be detecting a relative change in the capacitance of a “scoop” capacitor formed by a conductor and a surrounding ground plane. In an optical surface tracking cursor control device embodiment, switching to and from a BEACON state, which provides a reduced flash rate of a surface illuminating light source, is carried out based upon a detected presence or absence of a trackable surface.Type: ApplicationFiled: November 5, 2004Publication date: April 14, 2005Applicant: Microsoft CorporationInventors: Mark Casebolt, Gary Rensberger, Sean Gorman
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Publication number: 20050076171Abstract: A peripheral device is connectable to a computer having one of a first interface and a second interface. The first interface communicates with the peripheral device over a differential data connection having a first data conductor and a second data conductor. The second interface communicates with the peripheral device over a clock conductor and a single ended data connection which includes a data conductor. The peripheral device has first and second communication conductors configured for connection to the first and second data conductors in the differential data connection when the computer includes the first interface and is configured for connection to the first data conductor in the single ended data connection and the clock conductor when the computer is provided with the second interface.Type: ApplicationFiled: May 20, 2004Publication date: April 7, 2005Inventors: Mark Hanson, Nathan Sherman, Lord Featherston, Mark Casebolt, Victor Drake, Keith Mullins, David Holo, Terry Lipscomb
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Patent number: 5515083Abstract: A touch screen assembly including a molded cover and base is described. A mounting board is sandwiched between the cover and the base and supports a plurality of LEDs and detectors. Cylindrical guides corresponding to each of the LEDs and detectors are formed in the base when the base and cover are attached. The guides at the LEDs limit beam spreading and guides at the detectors prevent off-axis light from being detected. Support pedestals formed in the base, together with the cylindrical guides help align and support the LEDs and detectors to prevent misalignment and problems associated with fatigue. The cover is attached to the base by catch hooks which may be reached without disassembly of the CRT. Access to the mounting board is thereby facilitated.Type: GrantFiled: February 17, 1994Date of Patent: May 7, 1996Assignee: Spacelabs Medical, Inc.Inventors: Mark Casebolt, James M. Dahl