Patents by Inventor Marduke Yousefpor
Marduke Yousefpor 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: 10664113Abstract: Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing a coarse scan (e.g., banked common mode scan) to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and the results of the coarse scan can be used to dynamically adjust the operation of the touch sensitive device to perform or not perform a fine scan (e.g., targeted active mode scan). In some examples, the results of the coarse scan can be used to program a touch controller for the next touch sensing frame to idle when no touch event is detected or to perform a fine scan when one or more touch events are detected. In some examples, the results of the coarse scan can be used to abort a scheduled fine scan during the current touch sensing frame when no touch event is detected.Type: GrantFiled: August 27, 2018Date of Patent: May 26, 2020Assignee: Apple Inc.Inventors: Shahrooz Shahparnia, Vivek Pant, Marduke Yousefpor, Christoph H. Krah
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Patent number: 10606418Abstract: An input device outfitted with one or more ultrasonic transducers can determine the location of one or more objects in contact with the input device. For example, the input device can include one or more transducers disposed in a ring around the circumference of the input device or in an array of rings along the length of the input device. The ultrasonic transducers can be used to detect the position of the one or more touching objects in at least one dimension, for example. In some examples, the one or more ultrasonic transducers can produce directional ultrasonic waves.Type: GrantFiled: March 16, 2018Date of Patent: March 31, 2020Assignee: Apple Inc.Inventors: Marduke Yousefpor, Aaron Scott Tucker, Brian Michael King, Ehsan Khajeh, Marcus Yip, Mohammad Yeke Yazdandoost, Wesley W. Zuber
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Patent number: 10558302Abstract: Coded integration of a self-capacitance array to improve signal-to-noise ratio (SNR) of self-capacitance measurements is disclosed. A composite measurement of the self-capacitance of a plurality of electrodes can be measured for a plurality of integration periods. The composite measurements can include weighted contributions of charge from the plurality of electrodes, the weighting corresponding to a code. In some examples, the weighted contribution can include positive contributions integrated by a first integrator circuit and negative contributions integrated by a second integrator circuit. The composite measurements of the self-capacitance for the plurality of integration periods can be decoded to extract the self-capacitance measurement for the electrodes. The SNR for the self-capacitance measurements can therefore be improved by increasing the number of samples during the total integration period without requiring dedicated sensing circuitry for the electrodes.Type: GrantFiled: May 23, 2014Date of Patent: February 11, 2020Assignee: Apple Inc.Inventors: Shahrooz Shahparnia, Marduke Yousefpor
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Patent number: 10402025Abstract: A concurrent touch and negative pixel scan performed at a touch panel is disclosed. The concurrent scan can include sensing an object proximate to the touch panel and sensing a negative pixel effect, based the object's grounding condition, at the touch panel, at the same time. As a result, sense signals indicative of the proximity of the object and coupling signals indicative of the negative pixel effect's magnitude can be captured concurrently. Because the negative pixel effect can cause errors or distortions in the sense signals, the coupling signals can be used to compensate the sense signals for the negative pixel effect.Type: GrantFiled: August 1, 2017Date of Patent: September 3, 2019Assignee: Apple Inc.Inventors: Christoph H. Krah, Marduke Yousefpor
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Patent number: 10365773Abstract: A touch controller for flexible scanning operation is disclosed. The touch controller can include circuitry configured to perform coarse detection scans, select a fine scan type based on results from the coarse detection scans, and perform a fine scan corresponding to the selected fine scan type. A fine mutual capacitance scan can be performed when conditions corresponding to a poorly grounded or ungrounded object or user are detected based on the coarse detection scans. A fine fully-bootstrapped self-capacitance scan can be performed when conditions corresponding to a well-grounded object or user are detected based on the coarse detection scans. A touch processor can be configured to sense touch events from the fine scan.Type: GrantFiled: March 31, 2016Date of Patent: July 30, 2019Assignee: Apple Inc.Inventors: Marduke Yousefpor, Shwetabh Verma
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Patent number: 10325136Abstract: An acoustic imaging system includes multiple acoustic transducers disposed to circumscribe a portion of imaging surface. An acoustic imaging system also includes a controller and an image resolver. The acoustic transducers convert electrical signals into mechanical energy and/or mechanical energy into electrical signals. The controller is adapted to apply an electrical signal to the acoustic transducers which, in response, induce a mechanical wave, such as a surface wave, into the circumscribed portion. The controller is also adapted to receive electrical signals from the acoustic transducers. The image resolver uses the electrical signals received by the controller in order to construct an image of an object in physical contact with the imaging surface.Type: GrantFiled: September 23, 2016Date of Patent: June 18, 2019Assignee: Apple Inc.Inventors: Mohammad Yeke Yazdandoost, Marduke Yousefpor, Brian Michael King, Ehsan Khajeh, Marcus Yip, Giovanni Gozzini, Aaron Tucker
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Publication number: 20190138152Abstract: A touch panel electrode structure for user grounding correction in a touch panel is disclosed. The electrode structure can include an array of electrodes for sensing a touch at the panel, and multiple jumpers for selectively coupling groups of the electrodes together to form electrode rows and columns that cross each other. In some examples, the array can have a linear configuration and can form the rows and columns by coupling diagonally adjacent electrodes using the jumpers in a zigzag pattern, or the array can have a diamond configuration and can form the rows and columns by coupling linearly adjacent electrodes using the jumpers in a linear pattern. In various examples, each electrode can have a solid structure with a square shape, a reduced area with an outer electrode and a physically separate center electrode, a hollow center, or a solid structure with a hexagonal shape.Type: ApplicationFiled: November 27, 2018Publication date: May 9, 2019Inventors: Marduke YOUSEFPOR, Shahrooz SHAHPARNIA
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Patent number: 10282026Abstract: Measuring an effect of body capacitance in a touch sensitive device is disclosed. This effect can be caused by poor grounding of a user or other objects touching the device or of the device itself. The device can operate in a stray capacitance mode to measure a body capacitance effect and in a normal mode to detect a touch on the device. During the stray capacitance mode, the device can obtain a body capacitance measurement from the device. During the normal mode, the device can obtain a touch measurement from the device. The device can calculate a body capacitance factor based on a ratio between the body capacitance measurement and the touch measurement and use the body capacitance factor to compensate for erroneous or distorted touch output values from the device. Various components of the device can be switchably configured according to the particular mode.Type: GrantFiled: September 9, 2016Date of Patent: May 7, 2019Assignee: Apple Inc.Inventors: Christoph H. Krah, Steven P. Hotelling, Marduke Yousefpor
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Patent number: 10275633Abstract: An acoustic imaging system includes multiple acoustic transducers disposed to circumscribe a portion of imaging surface. An acoustic imaging system also includes a controller and an image resolver. The acoustic transducers convert electrical signals into mechanical energy and/or mechanical energy into electrical signals. The controller is adapted to apply an electrical signal to the acoustic transducers which, in response, induce a mechanical wave, such as a surface wave, into the circumscribed portion. The controller is also adapted to receive electrical signals from the acoustic transducers. The image resolver uses the electrical signals received by the controller in order to construct an image of an object in physical contact with the imaging surface.Type: GrantFiled: September 23, 2016Date of Patent: April 30, 2019Assignee: Apple Inc.Inventors: Marduke Yousefpor, Mohammad Yeke Yazdandoost, Brian Michael King
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Patent number: 10275638Abstract: An acoustic imaging system includes multiple acoustic transducers disposed to circumscribe a portion of imaging surface. An acoustic imaging system also includes a controller and an image resolver. The acoustic transducers convert electrical signals into mechanical energy and/or mechanical energy into electrical signals. The controller is adapted to apply an electrical signal to the acoustic transducers which, in response, induce a mechanical wave, such as a surface wave, into the circumscribed portion. The controller is also adapted to receive electrical signals from the acoustic transducers. The image resolver uses the electrical signals received by the controller in order to construct an image of an object in physical contact with the imaging surface.Type: GrantFiled: September 23, 2016Date of Patent: April 30, 2019Assignee: Apple Inc.Inventors: Marduke Yousefpor, Mohammad Yeke Yazdandoost, Brian Michael King, Aaron Tucker, Marcus Yip, Ehsan Khajeh
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Publication number: 20190095006Abstract: Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing a coarse scan (e.g., banked common mode scan) to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and the results of the coarse scan can be used to dynamically adjust the operation of the touch sensitive device to perform or not perform a fine scan (e.g., targeted active mode scan). In some examples, the results of the coarse scan can be used to program a touch controller for the next touch sensing frame to idle when no touch event is detected or to perform a fine scan when one or more touch events are detected. In some examples, the results of the coarse scan can be used to abort a scheduled fine scan during the current touch sensing frame when no touch event is detected.Type: ApplicationFiled: August 27, 2018Publication date: March 28, 2019Inventors: Shahrooz SHAHPARNIA, Christopher Tenzin MULLENS, Martin Paul GRUNTHANER, Adam GEBOFF, Vivek PANT, Marduke YOUSEFPOR, Christoph H. KRAH, Shwetabh VERMA, Sumant RANGANATHAN
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Publication number: 20190087051Abstract: A self-capacitive touch sensor panel configured to have a portion of both the touch and display functionality integrated into a common layer is provided. The touch sensor panel includes a layer with circuit elements that can switchably operate as both touch circuitry and display circuitry such that during a touch mode of the device the circuit elements operate as touch circuitry and during a display mode of the device the circuit elements operate as display circuitry. The touch mode and display mode can be time multiplexed. By integrating the touch hardware and display hardware into common layers, savings in power, weight and thickness of the device can be realized.Type: ApplicationFiled: November 15, 2018Publication date: March 21, 2019Inventors: Weijun YAO, Wei Hsin YAO, Yingxuan LI, Bingrui YANG, Marduke YOUSEFPOR, Abbas JAMSHIDI-ROUDBARI, Ahmad AL-DAHLE
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Patent number: 10209813Abstract: A self-capacitive touch sensor panel configured to have a portion of both the touch and display functionality integrated into a common layer is provided. The touch sensor panel includes a layer with circuit elements that can switchably operate as both touch circuitry and display circuitry such that during a touch mode of the device the circuit elements operate as touch circuitry and during a display mode of the device the circuit elements operate as display circuitry. The touch mode and display mode can be time multiplexed. By integrating the touch hardware and display hardware into common layers, savings in power, weight and thickness of the device can be realized.Type: GrantFiled: September 30, 2014Date of Patent: February 19, 2019Assignee: APPLE INC.Inventors: Weijun Yao, Wei Hsin Yao, Yingxuan Li, Bingrui Yang, Marduke Yousefpor, Abbas Jamshidi-Roudbari, Ahmad Al-Dahle
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Patent number: 10198610Abstract: An acoustic imaging system includes multiple acoustic transducers disposed to circumscribe a portion of imaging surface. An acoustic imaging system also includes a controller and an image resolver. The acoustic transducers convert electrical signals into mechanical energy and/or mechanical energy into electrical signals. The controller is adapted to apply an electrical signal to the acoustic transducers which, in response, induce a mechanical wave, such as a surface wave, into the circumscribed portion. The controller is also adapted to receive electrical signals from the acoustic transducers. The image resolver uses the electrical signals received by the controller in order to construct an image of an object in physical contact with the imaging surface.Type: GrantFiled: September 23, 2016Date of Patent: February 5, 2019Assignee: Apple Inc.Inventors: Marduke Yousefpor, Mohammad Yeke Yazdandoost, Brian Michael King, Marcus Yip, Ehsan Khajeh, Aaron Tucker
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Publication number: 20180341347Abstract: Acoustic touch and/or force sensing system architectures and methods for acoustic touch and/or force sensing can be used to detect a position of an object touching a surface and an amount of force applied to the surface by the object. The position and/or an applied force can be determined using time-of-flight (TOF) techniques, for example. Acoustic touch sensing can utilize transducers (e.g., piezoelectric) to simultaneously transmit ultrasonic waves along a surface and through a thickness of a deformable material. The location of the object and the applied force can be determined based on the amount of time elapsing between the transmission of the waves and receipt of the reflected waves. In some examples, an acoustic touch sensing system can be insensitive to water contact on the device surface, and thus acoustic touch sensing can be used for touch sensing in devices that may become wet or fully submerged in water.Type: ApplicationFiled: May 24, 2018Publication date: November 29, 2018Inventors: Marduke YOUSEFPOR, Mohammad YEKE YAZDANDOOST, Aaron Scott TUCKER, Marcus YIP, Ehsan KHAJEH, Brian Michael KING, Giovanni GOZZINI
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Publication number: 20180341359Abstract: Acoustic touch and/or force sensing system architectures and methods for acoustic touch and/or force sensing can be used to detect a position of an object touching a surface and an amount of force applied to the surface by the object. The position and/or an applied force can be determined using time-of-flight (TOF) techniques, for example. Acoustic touch sensing can utilize transducers (e.g., piezoelectric) to simultaneously transmit ultrasonic waves along a surface and through a thickness of a deformable material. The location of the object and the applied force can be determined based on the amount of time elapsing between the transmission of the waves and receipt of the reflected waves. In some examples, an acoustic touch sensing system can be insensitive to water contact on the device surface, and thus acoustic touch sensing can be used for touch sensing in devices that may become wet or fully submerged in water.Type: ApplicationFiled: May 24, 2018Publication date: November 29, 2018Inventors: Ehsan KHAJEH, Brian Michael KING, Mohammad YEKE YAZDANDOOST, Marcus YIP, Aaron Scott TUCKER, Marduke YOUSEFPOR, Peter Jon KARDASSAKIS, Giovanni GOZZINI, Supratik DATTA, Asif HUSSAIN
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Patent number: 10126850Abstract: An integrated touch sensitive display is provided. The integrated touch sensitive display can include rows and columns of touch electrodes. Various modulation techniques can be applied to one or more of the touch electrodes to allow sense circuitry to individually measure a capacitance associated with each of the touch electrodes. The capacitances can be used to determine a location and/or amount of touch or hover events at or near the integrated touch sensitive display.Type: GrantFiled: December 13, 2013Date of Patent: November 13, 2018Assignee: APPLE INC.Inventor: Marduke Yousefpor
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Publication number: 20180284946Abstract: An input device outfitted with one or more ultrasonic transducers can determine the location of one or more objects in contact with the input device. For example, the input device can include one or more transducers disposed in a ring around the circumference of the input device or in an array of rings along the length of the input device. The ultrasonic transducers can be used to detect the position of the one or more touching objects in at least one dimension, for example. In some examples, the one or more ultrasonic transducers can produce directional ultrasonic waves.Type: ApplicationFiled: March 16, 2018Publication date: October 4, 2018Inventors: Marduke Yousefpor, Aaron Scott Tucker, Brian Michael King, Ehsan Khajeh, Marcus Yip, Mohammad Yeke Yazdandoost, Wesley W. Zuber
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Publication number: 20180284947Abstract: The present disclosure relates to one or more intermediate layers located on a surface of a cover material of an acoustic touch screen. In some examples, the one or more layers can include one or more intermediate layers. The one or more intermediate layers can include a first layer including a plurality of features and a second layer located between the first layer and the cover material. In a touch condition, the touch object can apply a force to the top surface of the acoustic touch sensor. The applied force can create one or more local bends causing the plurality of features to move closer to the cover material and causing one or more surface discontinuities in the cover material. The acoustic waves can undergo reflections (e.g., causing the signal to be attenuated) due to the discontinuities located in the path of the wave propagation.Type: ApplicationFiled: March 31, 2017Publication date: October 4, 2018Inventors: Ehsan KHAJEH, Brian Michael KING, Marcus YIP, Aaron Scott TUCKER, Mohammad YEKE YAZDANDOOST, Marduke YOUSEFPOR, Giovanni GOZZINI
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Publication number: 20180275824Abstract: A touch sensor panel is disclosed. In some examples, the touch sensor panel comprises a plurality of touch node electrodes. In some examples, the touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully bootstrapped touch image, drive and sense the plurality of touch node electrodes in a second configuration, different from the fully bootstrapped configuration, to obtain a second touch image, the second touch image including an effect of water on the touch sensor panel, and determine a final touch image based on the fully bootstrapped touch image and the second touch image, the final touch image not including the effect of the water on the touch sensor panel. In some examples, the second configuration comprises a mutual capacitance configuration. In some examples, the second configuration comprises a partially bootstrapped configuration.Type: ApplicationFiled: October 27, 2015Publication date: September 27, 2018Inventors: Yingxuan LI, Weijun YAO, Vivek PANT, Martin Paul GRUNTHANER, Marduke YOUSEFPOR, Sumant RANGANATHAN