Patents by Inventor Shahrooz Shahparnia
Shahrooz Shahparnia 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: 20130106715Abstract: In one embodiment, a method includes receiving at a stylus a receive signal from a device. The stylus includes one or more computer-readable media embodying logic, and the device includes a touch sensor. The receive signal is received at the stylus through the touch sensor of the device and one or more electrodes of the stylus. The method includes filtering the receive signal for processing by the logic and processing, by the logic, the receive signal as filtered.Type: ApplicationFiled: December 17, 2011Publication date: May 2, 2013Applicant: ATMEL CORPORATIONInventors: Shahrooz SHAHPARNIA, Kishore SUNDARA-RAJAN, Trond Jarle PEDERSEN, Vemund Kval BAKKEN, James D. LYLE
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Publication number: 20130106761Abstract: In one embodiment, a method includes detecting a touch or proximity input at a first location within a touch-sensitive area of a touch sensor and comparing the first location with an entry in a look-up table associated with the first location. The entry includes a pre-determined location within the touch-sensitive area of the touch sensor for the first location, and the pre-determined location is potentially different from the first location. The method also includes, based on the comparison, identifying the pre-determined location as being intended by the user for the touch or proximity input.Type: ApplicationFiled: December 15, 2011Publication date: May 2, 2013Applicant: ATMEL CORPORATIONInventors: Shahrooz Shahparnia, Kishore Sundara-Rajan
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Publication number: 20130106771Abstract: In one embodiment, an apparatus includes a stylus nib of a stylus. The stylus nib comprising a tapered end. The apparatus also includes a rolling-ball tip. At least a portion of the rolling-ball tip is housed within the tapered end of the stylus nib, and the rolling-ball tip includes an electrode configured to transmit a signal wirelessly to a device through a touch-sensor of the device.Type: ApplicationFiled: February 22, 2012Publication date: May 2, 2013Applicant: Atmel CorporationInventors: Vemund Kval Bakken, Esat Yilmaz, Shahrooz Shahparnia
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Publication number: 20130106714Abstract: In one embodiment, a stylus includes one or more electrodes and one or more computer-readable non-transitory storage media embodying first logic for transmitting signals wirelessly to a device through a touch-sensor of the device. The stylus has a first power mode in which components of the stylus for receiving signals from or transmitting signals to the device are powered off; a second power mode in which components of the stylus for receiving signals from the device are powered on at least periodically and components of the stylus for transmitting signals to the device are powered off; and a third power mode in which components of the stylus for transmitting signals to the device are powered on at least periodically. The media further embodies second logic for transitioning the stylus from one of the first, second, and third power modes to another one of the first, second, and third power modes.Type: ApplicationFiled: December 17, 2011Publication date: May 2, 2013Applicant: ATMEL CORPORATIONInventors: Shahrooz Shahparnia, Trond Jarle Pedersen, John Logan, Vemund Kval Bakken, Kishore Sundara-Rajan
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Publication number: 20120293190Abstract: A processing system for a capacitive input device is described. The capacitive input device includes a plurality of sensor electrodes configured to detect input objects in a sensing region. The processing system configured to transmit a signal on a transmitter sensor channel of the capacitive input device. The processing system is also configured to receive the signal on a receiver sensor channel of the capacitive input device, wherein the receiver sensor channel is coupled with an amplifier. The processing system is also configured to determine if a level of interference has been received by the receiver sensor channel in conjunction with receipt of the signal.Type: ApplicationFiled: July 30, 2012Publication date: November 22, 2012Applicant: SYNAPTICS INCORPORATEDInventors: Shahrooz SHAHPARNIA, Kirk HARGREAVES
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Publication number: 20120287077Abstract: A capacitive input device processing system comprises input signal correction circuitry. The input signal correction circuitry includes an amplifier, a correction signal generator, and a charge collection mechanism. The amplifier is configured to receive a combination signal. The combination signal comprises a resulting signal from a sensor element and a correction charge. The correction signal generator is configured to generate a correction signal. The charge collection mechanism is configured to accumulate the correction charge from the correction signal.Type: ApplicationFiled: May 13, 2011Publication date: November 15, 2012Inventors: Vivek Pant, Shahrooz Shahparnia, Adam Schwartz
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Patent number: 8306623Abstract: An implantable system acquires intracardiac impedance with an implantable lead system. In one implementation, the system generates frequency-rich, low energy, multi-phasic waveforms that provide a net-zero charge and a net-zero voltage. When applied to bodily tissues, current pulses or voltage pulses having the multi-phasic waveform provide increased specificity and sensitivity in probing tissue. The effects of the applied pulses are sensed as a corresponding waveform. The waveforms of the applied and sensed pulses can be integrated to obtain corresponding area values that represent the current and voltage across a spectrum of frequencies. These areas can be compared to obtain a reliable impedance value for the tissue. Frequency response, phase delay, and response to modulated pulse width can also be measured to determine a relative capacitance of the tissue, indicative of infarcted tissue, blood to tissue ratio, degree of edema, and other physiological parameters.Type: GrantFiled: May 31, 2011Date of Patent: November 6, 2012Assignee: Pacesetter, Inc.Inventors: Louis Wong, Cem Shaquer, Gene A. Bornzin, Euljoon Park, Andre Walker, Dorin Panescu, Jiong Xia, Shahrooz Shahparnia
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Patent number: 8258797Abstract: In a method of determining interference in a capacitance sensor, a signal is transmitted on a transmitter sensor channel of the capacitive sensor. The signal is received on a receiver sensor channel of the capacitive sensor, the receiver sensor channel being coupled with an amplifier. Behavior of the amplifier is examined for non-linearity to determine if a level of interference has been received by the receiver sensor channel in conjunction with receipt of the signal.Type: GrantFiled: June 24, 2009Date of Patent: September 4, 2012Assignee: Synaptics IncorporatedInventors: Shahrooz Shahparnia, Kirk Hargreaves
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Publication number: 20120207244Abstract: An input device comprises a processing system coupled with a plurality of receiver paths. The processing system comprises a first capacitor and a bypass switch. The first capacitor is configured to be selectively coupled with the plurality of receiver paths. The bypass switch is configured for bypassing the first capacitor. The processing system is configured to selectively couple a first receiver path of the plurality of receiver paths with the first capacitor; acquire a measurement of a first resulting signal from at least one of the first receiver path or a second receiver path of the plurality of receiver paths while the first receiver path is coupled with the first capacitor and while the bypass switch is not bypassing the first capacitor; and determine whether the first receiver path is ohmically coupled with the second receiver path based on the measurement of the first resulting signal.Type: ApplicationFiled: February 16, 2011Publication date: August 16, 2012Inventors: John Weinerth, Shahrooz Shahparnia, Vivek Pant, Joseph Kurth Reynolds
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Publication number: 20120206154Abstract: An interference determining circuit for a capacitive sensor device comprises an amplifier, absolute differential circuitry, and comparator circuitry. The amplifier is configured for receiving a reference voltage at a first input and for receiving a resulting signal at a second input. The resulting signal is from a sensor electrode of the capacitive sensor device. The absolute differential circuitry is coupled with an output of the amplifier and configured for outputting a difference signal. The difference signal represents an absolute differential between currents utilized in the amplifier. The comparator circuitry is coupled with the absolute differential circuitry and configured for generating a non-linearity indication based on a comparison of the difference signal with at least one reference signal.Type: ApplicationFiled: February 10, 2011Publication date: August 16, 2012Inventors: Vivek Pant, Farzaneh Shahrokhi, Shahrooz Shahparnia
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Publication number: 20120053470Abstract: An implantable system acquires intracardiac impedance with an implantable lead system. In one implementation, the system generates frequency-rich, low energy, multi-phasic waveforms that provide a net-zero charge and a net-zero voltage. When applied to bodily tissues, current pulses or voltage pulses having the multi-phasic waveform provide increased specificity and sensitivity in probing tissue. The effects of the applied pulses are sensed as a corresponding waveform. The waveforms of the applied and sensed pulses can be integrated to obtain corresponding area values that represent the current and voltage across a spectrum of frequencies. These areas can be compared to obtain a reliable impedance value for the tissue. Frequency response, phase delay, and response to modulated pulse width can also be measured to determine a relative capacitance of the tissue, indicative of infarcted tissue, blood to tissue ratio, degree of edema, and other physiological parameters.Type: ApplicationFiled: May 31, 2011Publication date: March 1, 2012Inventors: Louis Wong, Cem Shaquer, Gene A. Bornzin, Euljoon Park, Andre Walker, Dorin Panescu, Jiong Xia, Shahrooz Shahparnia
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Patent number: 8065005Abstract: An implantable system acquires intracardiac impedance with an implantable lead system. In one implementation, the system generates frequency-rich, low energy, multi-phasic waveforms that provide a net-zero charge and a net-zero voltage. When applied to bodily tissues, current pulses or voltage pulses having the multi-phasic waveform provide increased specificity and sensitivity in probing tissue. The effects of the applied pulses are sensed as a corresponding waveform. The waveforms of the applied and sensed pulses can be integrated to obtain corresponding area values that represent the current and voltage across a spectrum of frequencies. These areas can be compared to obtain a reliable impedance value for the tissue. Frequency response, phase delay, and response to modulated pulse width can also be measured to determine a relative capacitance of the tissue, indicative of infarcted tissue, blood to tissue ratio, degree of edema, and other physiological parameters.Type: GrantFiled: March 12, 2007Date of Patent: November 22, 2011Assignee: Pacesetter, Inc.Inventors: Louis Wong, Cem Shaquer, Gene A. Bornzin, Euljoon Park, Andre Walker, Dorin Panescu, Jiong Xia, Shahrooz Shahparnia
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Publication number: 20110267305Abstract: A display device having an integrated capacitive proximity sensor comprises a plurality of sensor electrodes disposed as part of a display element of the display device. The plurality of sensor electrodes is configured for performing both sensor and display functions of the display device. The display device also comprises a sensor drive mechanism coupled with the plurality of sensor electrodes and configured for driving a first electrical signal on a first at least one sensor electrode of the plurality of sensor electrodes. The sensor drive mechanism comprises at least one memory element that is configured for selecting drive excitation information for the first at least one sensor electrode. The display device also comprises a display drive mechanism coupled with the plurality of sensor electrodes and configured for driving a second electrical signal on a second least one sensor electrode of the plurality of sensor electrodes.Type: ApplicationFiled: April 30, 2010Publication date: November 3, 2011Inventors: Shahrooz Shahparnia, Imre Knausz, Joseph Kurth Reynolds
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Patent number: 8026770Abstract: The relaxation oscillator includes a comparator and a latch. The comparator includes a comparator output and a comparator input that is configured to receive a first input signal in response to a first signal and configured to receive a second input signal in response to a second signal. The latch includes a latch-set input that is configured to be coupled to the comparator output in response to a third signal, a latch-reset input that is configured to be coupled to the comparator output in response to a fourth signal and a latch output that is configured to output the second signal. The relaxation oscillator is configured to achieve an approximately fifty percent duty cycle without requiring the use of a second comparator.Type: GrantFiled: July 1, 2009Date of Patent: September 27, 2011Assignee: Synaptics, Inc.Inventor: Shahrooz Shahparnia
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Publication number: 20110210941Abstract: In a method of capacitive sensing using an integrated capacitive sensor device and display device, a transmitter signal is transmitted with a combination electrode of the integrated capacitive sensor device and display device. The combination electrode is configured for both capacitive sensing and display updating. The transmitter signal transitions at least twice during a non-display update time period associated with row update of the display device. A display of the display device is updated during an update time period. A resulting signal is received with a receiver electrode of the integrated capacitive sensor device and display device during the non-display update time period. The resulting signal corresponds to the transmitter signal.Type: ApplicationFiled: February 24, 2011Publication date: September 1, 2011Inventors: Joseph Kurth Reynolds, Shahrooz Shahparnia, Adam Schwartz, Joel Jordan
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Publication number: 20110210939Abstract: In a method of interference avoidance for a capacitive sensor device, a transmitter signal is transmitted with a transmitter electrode of the capacitive sensor device. A resulting signal is received with a receiver electrode of the capacitive sensor device. The resulting signal corresponds to the transmitter signal. A first demodulated output is acquired by demodulating the resulting signal in a first way. A second demodulated output is acquired by demodulating the resulting signal in a second way, where the second way and the first way differ. A shift is made from using the first demodulated output for determining positional information to using the second demodulated output for determining positional information. The shift is based at least in part upon an amount of interference.Type: ApplicationFiled: February 24, 2011Publication date: September 1, 2011Inventors: Joseph Kurth REYNOLDS, Shahrooz SHAHPARNIA, Adam SCHWARTZ, Joel JORDAN
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Patent number: 8010196Abstract: An implantable system acquires intracardiac impedance with an implantable lead system. In one implementation, the system generates frequency-rich, low energy, multi-phasic waveforms that provide a net-zero charge and a net-zero voltage. When applied to bodily tissues, current pulses or voltage pulses having the multi-phasic waveform provide increased specificity and sensitivity in probing tissue. The effects of the applied pulses are sensed as a corresponding waveform. The waveforms of the applied and sensed pulses can be integrated to obtain corresponding area values that represent the current and voltage across a spectrum of frequencies. These areas can be compared to obtain a reliable impedance value for the tissue. Frequency response, phase delay, and response to modulated pulse width can also be measured to determine a relative capacitance of the tissue, indicative of infarcted tissue, blood to tissue ratio, degree of edema, and other physiological parameters.Type: GrantFiled: March 12, 2007Date of Patent: August 30, 2011Assignee: Pacesetter, Inc.Inventors: Louis Wong, Cem Shaquer, Gene A. Bornzin, Euljoon Park, Andre Walker, Dorin Panescu, Jiong Xia, Shahrooz Shahparnia
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Publication number: 20110001572Abstract: A relaxation oscillator. The relaxation oscillator includes a comparator and a latch. The comparator includes a comparator output and a comparator input that is configured to receive a first input signal in response to a first signal and configured to receive a second input signal in response to a second signal. The latch includes a latch-set input that is configured to be coupled to the comparator output in response to a third signal, a latch-reset input that is configured to be coupled to the comparator output in response to a fourth signal and a latch output that is configured to output the second signal. The relaxation oscillator is configured to achieve an approximately fifty percent duty cycle without requiring the use of a second comparator.Type: ApplicationFiled: July 1, 2009Publication date: January 6, 2011Inventor: Shahrooz Shahparnia
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Publication number: 20100327882Abstract: In a method of determining interference in a capacitance sensor, a signal is transmitted on a transmitter sensor channel of the capacitive sensor. The signal is received on a receiver sensor channel of the capacitive sensor, the receiver sensor channel being coupled with an amplifier. Behavior of the amplifier is examined for non-linearity to determine if a level of interference has been received by the receiver sensor channel in conjunction with receipt of the signal.Type: ApplicationFiled: June 24, 2009Publication date: December 30, 2010Inventors: Shahrooz Shahparnia, Kirk Hargreaves
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Publication number: 20100292945Abstract: A capacitive sensor device comprises a first sensor electrode, a second sensor electrode, and a processing system coupled to the first sensor electrode and the second sensor electrode. The processing system is configured to acquire a first capacitive measurement by emitting and receiving a first electrical signal with the first sensor electrode. The processing system is configured to acquire a second capacitive measurement by emitting and receiving a second electrical signal, wherein one of the first and second sensor electrodes performs the emitting and the other of the first and second sensor electrodes performs the receiving, and wherein the first and second capacitive measurements are non-degenerate. The processing system is configured to determine positional information using the first and second capacitive measurements.Type: ApplicationFiled: May 12, 2010Publication date: November 18, 2010Inventors: Joseph Kurth Reynolds, Kirk Hargreaves, Shahrooz Shahparnia, Phillip Acker