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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Patent number: 9898121Abstract: 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: GrantFiled: April 30, 2010Date of Patent: February 20, 2018Assignee: Synaptics IncorporatedInventors: Shahrooz Shahparnia, Imre Knausz, Joseph Kurth Reynolds
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Publication number: 20180042556Abstract: This relates to a monitoring system capable of measuring a plurality of vital signs. The monitoring system can include a plurality of sensors including, but not limited to, electrodes, piezoelectric sensors, temperature sensors, and accelerometers. The monitoring system can be capable of operating in one or more operation modes such as, for example: capacitance measurement mode, electrical measurement mode, piezoelectric measurement mode, temperature measurement mode, acceleration measurement mode, impedance measurement mode, and standby mode. Based on the measured values, the monitoring system can analyze the user's sleep, provide feedback and suggestions to the user, and/or can adjust or control the environmental conditions to improve the user's sleep. The monitoring system can further be capable of analyzing the sleep of the user(s) without directly contacting or attaching uncomfortable probes to the user(s) and without having to analyze the sleep in an unknown environment (e.g., a medical facility).Type: ApplicationFiled: August 11, 2017Publication date: February 15, 2018Inventors: Shahrooz SHAHPARNIA, Erno H. KLAASSEN
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Patent number: 9880664Abstract: Noise in sensor panel measurements can be reduced using a common pixel correction algorithm. Noise can be introduced into touch or force sensor panel measurements, for example, by circuitry of a transmit (Tx) section or a receive (Rx) section coupled to one or more sensing nodes of a sensor panel. For example, a digital-to-analog converter in the transmit section or an analog-to-digital converter in the receive section can introduce low-frequency correlated noise. Additionally, transmit and receive sections can introduce uncorrelated noise into the system. Reference nodes, coupled between Tx and Rx sections, can sense correlated and uncorrelated noise from the Tx and Rx sections. The noise measured at reference nodes can be subtract from signals measured at other sensing nodes coupled to the same Rx channel. The measurement at the reference node can be scaled using a scaling parameter to account for differences between reference nodes and sensing nodes.Type: GrantFiled: September 24, 2015Date of Patent: January 30, 2018Assignee: Apple Inc.Inventors: Manu Agarwal, Jason C. Hu, Dhaval Patel, Shahrooz Shahparnia, Sumant Ranganathan
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Patent number: 9857921Abstract: 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: GrantFiled: May 13, 2011Date of Patent: January 2, 2018Assignee: Synaptics IncorporatedInventors: Vivek Pant, Shahrooz Shahparnia, Adam Schwartz
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Patent number: 9848069Abstract: Time synchronization between a central wireless communication device and a peripheral wireless communication device is described. Events associated with an application are time stamped at the central wireless communication device, and one or more link layer messages are sent to the peripheral wireless communication device to provide time stamp information to replicate the event timing at the peripheral wireless communication device. A first link layer message includes information about an internal Bluetooth clock to calibrate a corresponding internal clock value at the peripheral wireless communication device. A second link layer message includes information about a current value for the Bluetooth clock and also a value for an offset that provides a time position at a finer granularity than the Bluetooth clock within a timeslot specified by the Bluetooth clock value.Type: GrantFiled: September 25, 2014Date of Patent: December 19, 2017Assignee: Apple Inc.Inventors: Adam Geboff, Sriram Hariharan, Joakim Linde, Li-Quan Tan, Shahrooz Shahparnia
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Publication number: 20170344174Abstract: Position-based sensing methods and systems can be used to transmit data from an input device to a touch-sensitive device. For example, the touch sensing system may perform one or more coarse input device sub-scans to determine a coarse location of the input device. The coarse location can be used to select one or more touch sensors (or sensor channels) to sample for decoding data encoded in the stimulation signals from the input device. During one or more fine input device sub-scans, the touch sensing system can determine a fine location of the input device and decode the data from the input device sampled from the selected touch sensors (or sensor channels).Type: ApplicationFiled: May 31, 2016Publication date: November 30, 2017Inventors: Vivek PANT, Moshe MALKIN, Shahrooz SHAHPARNIA
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Patent number: 9811178Abstract: A touch input device configured to detect stylus signals generated by an external stylus is provided. The touch input device includes a plurality of stylus signal detectors that can receive the stylus signal and estimate the start and end time of the stylus signal in order to facilitate windowed demodulation of signal. The start and end times are then used to facilitate a windowed demodulation of the stylus signal.Type: GrantFiled: March 14, 2013Date of Patent: November 7, 2017Assignee: Apple Inc.Inventor: Shahrooz Shahparnia
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Patent number: 9805692Abstract: 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: GrantFiled: February 24, 2011Date of Patent: October 31, 2017Assignee: Synaptics IncorporatedInventors: Joseph Kurth Reynolds, Shahrooz Shahparnia, Adam Schwartz, Joel Jordan
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Patent number: 9804213Abstract: 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: GrantFiled: May 12, 2010Date of Patent: October 31, 2017Assignee: Synaptics IncorporatedInventors: Joseph Kurth Reynolds, Kirk Hargreaves, Shahrooz Shahparnia, Phillip Acker
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Publication number: 20170293372Abstract: In one aspect, the present disclosure relates to a method including determining which sense lines are potentially corrupted based on touch image information, measuring a sense signal on each sense line, and applying a trained best compensation factor to the measured sense signal on potentially corrupted sense lines in order to produce a corrected sense signal. The corrected sense signal eliminates active stylus signal that has cross-coupled to a touch contact (e.g., a finger or conductive stylus) and thereby mitigates errors in stylus location due to cross-coupled signal.Type: ApplicationFiled: April 12, 2017Publication date: October 12, 2017Applicant: Apple Inc.Inventors: Leah GUM, Wayne C. WESTERMAN, Seyed Mohammad NAVIDPOUR, Shahrooz SHAHPARNIA
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Patent number: 9786254Abstract: 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: GrantFiled: February 24, 2011Date of Patent: October 10, 2017Assignee: Synaptics IncorporatedInventors: Joseph Kurth Reynolds, Shahrooz Shahparnia, Adam Schwartz, Joel Jordan
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Patent number: 9762234Abstract: 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: GrantFiled: February 10, 2011Date of Patent: September 12, 2017Assignee: Synaptics IncorporatedInventors: Vivek Pant, Farzaneh Shahrokhi, Shahrooz Shahparnia
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Publication number: 20170192540Abstract: In one embodiment, an active stylus includes a transmitter configured to transmit electrical signals to a device through a touch sensor of the device. The active stylus also includes a receiver configured to receive electrical signals from the device through the touch sensor of the device. Furthermore, the active stylus includes a controller configured to determine a strength of an electrical signal received by the receiver from the touch sensor of the device and instruct the transmitter to transmit electrical signals to the device at a voltage based at least on the determined strength of the electrical signal received by the receiver.Type: ApplicationFiled: March 20, 2017Publication date: July 6, 2017Inventors: Eivind Holsen, Shahrooz Shahparnia, Kishore Sundara-Rajan, Trond Jarle Pedersen, Vemund Kval Bakken, James D. Lyle
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Patent number: 9690431Abstract: In one embodiment, a system comprises a touch sensor and a stylus. The touch sensor comprises drive lines and sense lines arranged such that intersections of the drive lines and sense lines form capacitive nodes. The drive lines transmits a first signal having an identification portion. The stylus comprises a sense unit and a drive unit. The sense unit senses the first signal from the drive lines, compares the identification portion to criteria stored in the stylus, and authorizes the drive unit to transmit a second signal based on the first signal if the identification portion satisfies the criteria stored in the stylus. The drive unit transmits the second signal to the sense lines such that transmission of the second signal changes capacitance of the capacitive nodes.Type: GrantFiled: December 16, 2011Date of Patent: June 27, 2017Assignee: Atmel CorporationInventors: Shahrooz Shahparnia, Sherif Hanna
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Publication number: 20170090668Abstract: Noise in sensor panel measurements can be reduced using a common pixel correction algorithm. Noise can be introduced into touch or force sensor panel measurements, for example, by circuitry of a transmit (Tx) section or a receive (Rx) section coupled to one or more sensing nodes of a sensor panel. For example, a digital-to-analog converter in the transmit section or an analog-to-digital converter in the receive section can introduce low-frequency correlated noise. Additionally, transmit and receive sections can introduce uncorrelated noise into the system. Reference nodes, coupled between Tx and Rx sections, can sense correlated and uncorrelated noise from the Tx and Rx sections. The noise measured at reference nodes can be subtract from signals measured at other sensing nodes coupled to the same Rx channel. The measurement at the reference node can be scaled using a scaling parameter to account for differences between reference nodes and sensing nodes.Type: ApplicationFiled: September 24, 2015Publication date: March 30, 2017Inventors: Manu AGARWAL, Jason C. HU, Dhaval PATEL, Shahrooz SHAHPARNIA, Sumant RANGANATHAN
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Patent number: 9582105Abstract: A method for receiving data from an input device to a computing device through a touch interface. The method includes detecting an input device, synchronizing with the input device by receiving a position signal and activating an input device scan of the touch interface, receiving a data signal from the input device through at least one of a sense line or a drive line of the touch interface, and scanning the touch interface for a touch input by applying a stimulation signal to the at least one drive line and analyzing the at least one sense line.Type: GrantFiled: February 29, 2016Date of Patent: February 28, 2017Assignee: Apple Inc.Inventors: Christoph H. Krah, Shahrooz Shahparnia, Steven P. Hotelling
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Patent number: 9557845Abstract: A computing device configured to receive data from a peripheral device, such as a stylus. The computing device includes a processor, a touch interface, such as a touch screen, in communication with the processor and configured to detect an input corresponding to an object approaching or contacting a surface. The computing device further includes a touch filter in communication with the touch interface and a peripheral filter in communication with the touch interface. The touch filter is configured to reject a peripheral frequency corresponding to a peripheral signal of the peripheral device and the peripheral filter is configured to reject a touch frequency component corresponding to a touch signal corresponding to a touch input.Type: GrantFiled: July 27, 2012Date of Patent: January 31, 2017Assignee: Apple Inc.Inventor: Shahrooz Shahparnia
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Patent number: 9557868Abstract: A touch sensor may overlap a display. A transparent shield layer that is grounded around its edges may be interposed between the display and the touch sensor to help prevent noise from display data lines from reaching the touch sensor. The data lines may extend along a first dimension. The touch sensor may have first elongated electrodes that extend along the first dimension and second elongated electrodes that extend along a second dimension that is perpendicular to the first dimension. The second electrodes may be interposed between the first electrodes and the data lines. Pen present electrodes may be used to gather pen present data associated with a stylus on the touch sensor. Adjacent noise sensors may collect noise data that is removed from the pen present data.Type: GrantFiled: November 21, 2014Date of Patent: January 31, 2017Assignee: Apple Inc.Inventors: Manu Agarwal, Shahrooz Shahparnia, Vivek Pant
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Publication number: 20170010699Abstract: 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: January 28, 2016Publication date: January 12, 2017Inventors: Shahrooz Shahparnia, Kishore Sundara-Rajan, Trond Jarle Pedersen, Vemund Kval Bakken, James D. Lyle
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Publication number: 20160378208Abstract: Active styli, methods and non-transitory computer readable storage media can be used for mitigating noise coupling from an active stylus to a touch sensing system. An active stylus can include a force sensor that can be used to detect stylus touch-down and lift-off events. Based on a touch-down and lift-off events, the stylus can generate stimulation signals and ramp up or ramp down the amplitude of the stimulation signals. Additionally or alternatively, an active stylus can receive information to synchronize the active stylus with a touch-sensitive device. Based on the information, the stylus can synchronize generation of stimulation signals with the stylus scan performed by the touch-sensitive device. The stimulation signals can be ramped up during a guard band period before a stylus scan and can be ramped down during a guard band period after the stylus scan.Type: ApplicationFiled: June 25, 2015Publication date: December 29, 2016Inventors: Shahrooz SHAHPARNIA, Vivek PANT