Patents by Inventor Kostadin Dimitrov Djordjev
Kostadin Dimitrov Djordjev 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: 20240046691Abstract: Methods, devices and systems for providing extended reality effects are disclosed. In some examples, a control system may control a structure to provide extended reality effects and also may control an ultrasound-based haptic system to create haptic effects via transmitted ultrasonic waves. The ultrasound-based haptic system may include one or more arrays of ultrasonic transducers, such as piezoelectric micromachined ultrasonic transducers (PMUTs), mounted in or on the structure. The haptic effects may be created via air-coupled ultrasonic waves.Type: ApplicationFiled: August 3, 2022Publication date: February 8, 2024Inventors: Yipeng LU, Hrishikesh Vijaykumar PANCHAWAGH, Kostadin Dimitrov DJORDJEV
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Publication number: 20240037979Abstract: An apparatus may include an ultrasonic sensor stack, a foldable display stack and a transmission enhancement layer. The foldable display stack may include a display stiffener and display stack layers. The display stack layers may form one or more display stack resonators configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in a first ultrasonic frequency range. In some implementations, a transmission enhancement resonator may include the display stiffener and the transmission enhancement layer. In some examples, the transmission enhancement resonator may include at least a portion of the ultrasonic sensor stack. The transmission enhancement resonator may be configured to enhance the ultrasonic waves transmitted by the ultrasonic sensor stack in the first ultrasonic frequency range.Type: ApplicationFiled: October 13, 2023Publication date: February 1, 2024Inventors: Shiang-Chi LIN, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Yipeng LU, Chin-Jen TSENG, Kostadin Dimitrov DJORDJEV, Min-Lun YANG, Chia-Wei YANG
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Patent number: 11823483Abstract: Some disclosed implementations include an ultrasonic sensor stack and an acoustic resonator. The acoustic resonator may be configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in an ultrasonic frequency range that is suitable for ultrasonic fingerprint sensors. In some examples, the acoustic resonator may include one or more low-impedance layers residing between a first higher-impedance layer and a second higher-impedance layer. Each of the one or more low-impedance layers may have a lower acoustic impedance than an acoustic impedance of the first higher-impedance layer or an acoustic impedance of the second higher-impedance layer. At least one low-impedance layer may have a thickness corresponding to a multiple of a half wavelength at a peak frequency of the acoustic resonator. The peak frequency may be within a frequency range from 1 MHz. to 20 MHz.Type: GrantFiled: September 17, 2021Date of Patent: November 21, 2023Assignee: QUALCOMM IncorporatedInventors: Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh, Nai-Kuei Kuo, Yipeng Lu, Ali Lopez, Kostadin Dimitrov Djordjev
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Patent number: 11798307Abstract: An apparatus may include an ultrasonic sensor stack, a foldable display stack and a transmission enhancement layer. The foldable display stack may include a display stiffener and display stack layers. The display stack layers may form one or more display stack resonators configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in a first ultrasonic frequency range. In some implementations, a transmission enhancement resonator may include the display stiffener and the transmission enhancement layer. In some examples, the transmission enhancement resonator may include at least a portion of the ultrasonic sensor stack. The transmission enhancement resonator may be configured to enhance the ultrasonic waves transmitted by the ultrasonic sensor stack in the first ultrasonic frequency range.Type: GrantFiled: August 30, 2021Date of Patent: October 24, 2023Assignee: QUALCOMM IncorporatedInventors: Shiang-Chi Lin, Hrishikesh Vijaykumar Panchawagh, Jessica Liu Strohmann, Yipeng Lu, Chin-Jen Tseng, Kostadin Dimitrov Djordjev, Min-Lun Yang, Chia-Wei Yang
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Patent number: 11798308Abstract: Some disclosed implementations include an ultrasonic sensor stack and an acoustic resonator. The acoustic resonator may be configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in an ultrasonic frequency range that is suitable for ultrasonic fingerprint sensors. In some examples, the acoustic resonator may include one or more low-impedance layers residing between a first higher-impedance layer and a second higher-impedance layer. Each of the one or more low-impedance layers may have a lower acoustic impedance than an acoustic impedance of the first higher-impedance layer or an acoustic impedance of the second higher-impedance layer. At least one low-impedance layer may have a thickness corresponding to a multiple of a half wavelength at a peak frequency of the acoustic resonator. The peak frequency may be within a frequency range from 1 MHz. to 20 MHz.Type: GrantFiled: September 17, 2021Date of Patent: October 24, 2023Assignee: QUALCOMM IncorporatedInventors: Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh, Nai-Kuei Kuo, Yipeng Lu, Ali Lopez, Kostadin Dimitrov Djordjev
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Publication number: 20230252816Abstract: An apparatus may include an ultrasonic sensor stack, a foldable display stack and a transmission enhancement layer. The foldable display stack may include a display stiffener and display stack layers. The display stack layers may form one or more display stack resonators configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in a first ultrasonic frequency range. In some implementations, a transmission enhancement resonator may include the display stiffener and the transmission enhancement layer. In some examples, the transmission enhancement resonator may include at least a portion of the ultrasonic sensor stack. The transmission enhancement resonator may be configured to enhance the ultrasonic waves transmitted by the ultrasonic sensor stack in the first ultrasonic frequency range.Type: ApplicationFiled: April 18, 2023Publication date: August 10, 2023Inventors: Shiang-Chi LIN, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Yipeng LU, Chin-Jen TSENG, Kostadin Dimitrov DJORDJEV, Min-Lun YANG, Chia-Wei YANG
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Patent number: 11716566Abstract: Some disclosed devices may include a display stack, a cover layer proximate a first side of the display stack and a segmented transducer array proximate a second side of the display stack. The segmented transducer array may include a plurality of separate transducer segments. Each of the separate transducer segments may include a piezoelectric layer and a thin-film transistor (TFT) layer. The separate transducer segments may include transmitter transducer segments and receiver transducer segments. In some examples, a spacing between at least a first plurality of the transmitter transducer segments may correspond to a display stack and cover layer oscillation mode frequency in a range from 20 Hz to 20 kHz, from 15 kHz to 200 kHz or from 20 kHz to 400 kHz.Type: GrantFiled: March 23, 2021Date of Patent: August 1, 2023Assignee: QUALCOMM IncorporatedInventors: Bernard Herrera, Jessica Liu Strohmann, Changting Xu, Hrishikesh Vijaykumar Panchawagh, Kostadin Dimitrov Djordjev
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Patent number: 11703578Abstract: Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.Type: GrantFiled: May 13, 2022Date of Patent: July 18, 2023Assignee: QUALCOMM IncorporatedInventors: Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Jessica Liu Strohmann, Kostadin Dimitrov Djordjev
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Patent number: 11695865Abstract: Various aspects of the present disclosure generally relate to control of a user device under a wet condition. In some aspects, a user device may determine whether the user device is operating under a wet condition; select, based at least in part on whether the user device is operating under the wet condition, a set of input components to control the user device, wherein the set of input components is selected from a plurality of different sets of input components; and configure a user interface of the user device according to the set of input components. Numerous other aspects are provided.Type: GrantFiled: July 18, 2022Date of Patent: July 4, 2023Assignee: QUALCOMM IncorporatedInventors: Sandeep Louis D'Souza, Vadim Winebrand, Mohamed Ahmed, Syed Fawad Ahmad, Nathan Felix Altman, Suhail Jalil, Livingstone Song, Raj Kumar, David Chandler, Masoud Roham, Xin Fan, Lennart Karl-Axel Mathe, Kostadin Dimitrov Djordjev, Deep Bhatia
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Publication number: 20230177863Abstract: Disclosed are methods, devices, apparatuses, and systems for an under-display ultrasonic fingerprint sensor. A display device may include a platen, a display underlying the platen, and an ultrasonic fingerprint sensor underlying the display, where the ultrasonic fingerprint sensor is configured to transmit and receive ultrasonic waves via an acoustic path through the platen and the display. A light-blocking layer and/or an electrical shielding layer may be provided between the ultrasonic fingerprint sensor and the display, where the light-blocking layer and/or the electrical shielding layer are in the acoustic path. A mechanical stress isolation layer may be provided between the ultrasonic fingerprint sensor and the display, where the mechanical stress isolation layer is in the acoustic path.Type: ApplicationFiled: January 30, 2023Publication date: June 8, 2023Inventors: Hrishikesh Vijaykumar Panchawagh, IIa Ravindra Badge, Yipeng LU, Kostadin Dimitrov Djordjev, Suryaprakash Ganti, Chin-Jen Tseng, Nicholas Ian Buchan, Tsongming Kao, Leonard Eugene Fennell, Firas Sammoura, Jessica Liu Strohmann, David William Burns
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Publication number: 20230086418Abstract: Some disclosed implementations include an ultrasonic sensor stack and an acoustic resonator. The acoustic resonator may be configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in an ultrasonic frequency range that is suitable for ultrasonic fingerprint sensors. In some examples, the acoustic resonator may include one or more low-impedance layers residing between a first higher-impedance layer and a second higher-impedance layer. Each of the one or more low-impedance layers may have a lower acoustic impedance than an acoustic impedance of the first higher-impedance layer or an acoustic impedance of the second higher-impedance layer. At least one low-impedance layer may have a thickness corresponding to a multiple of a half wavelength at a peak frequency of the acoustic resonator. The peak frequency may be within a frequency range from 1 MHz. to 20 MHz.Type: ApplicationFiled: September 17, 2021Publication date: March 23, 2023Inventors: Jessica Liu STROHMANN, Hrishikesh Vijaykumar PANCHAWAGH, Nai-Kuei KUO, Yipeng LU, Ali LOPEZ, Kostadin Dimitrov DJORDJEV
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Publication number: 20230088820Abstract: Some disclosed implementations include an ultrasonic sensor stack and an acoustic resonator. The acoustic resonator may be configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in an ultrasonic frequency range that is suitable for ultrasonic fingerprint sensors. In some examples, the acoustic resonator may include one or more low-impedance layers residing between a first higher-impedance layer and a second higher-impedance layer. Each of the one or more low-impedance layers may have a lower acoustic impedance than an acoustic impedance of the first higher-impedance layer or an acoustic impedance of the second higher-impedance layer. At least one low-impedance layer may have a thickness corresponding to a multiple of a half wavelength at a peak frequency of the acoustic resonator. The peak frequency may be within a frequency range from 1 MHz. to 20 MHz.Type: ApplicationFiled: September 17, 2021Publication date: March 23, 2023Inventors: Jessica Liu STROHMANN, Hrishikesh Vijaykumar PANCHAWAGH, Nai-Kuei KUO, Yipeng LU, Ali LOPEZ, Kostadin Dimitrov DJORDJEV
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Publication number: 20230063693Abstract: An apparatus may include an ultrasonic sensor stack, a foldable display stack and a transmission enhancement layer. The foldable display stack may include a display stiffener and display stack layers. The display stack layers may form one or more display stack resonators configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in a first ultrasonic frequency range. In some implementations, a transmission enhancement resonator may include the display stiffener and the transmission enhancement layer. In some examples, the transmission enhancement resonator may include at least a portion of the ultrasonic sensor stack. The transmission enhancement resonator may be configured to enhance the ultrasonic waves transmitted by the ultrasonic sensor stack in the first ultrasonic frequency range.Type: ApplicationFiled: August 30, 2021Publication date: March 2, 2023Inventors: Shiang-Chi LIN, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Yipeng LU, Chin-Jen TSENG, Kostadin Dimitrov DJORDJEV, Min-Lun YANG, Chia-Wei YANG
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Publication number: 20220353360Abstract: Various aspects of the present disclosure generally relate to control of a user device under a wet condition. In some aspects, a user device may determine whether the user device is operating under a wet condition; select, based at least in part on whether the user device is operating under the wet condition, a set of input components to control the user device, wherein the set of input components is selected from a plurality of different sets of input components; and configure a user interface of the user device according to the set of input components. Numerous other aspects are provided.Type: ApplicationFiled: July 18, 2022Publication date: November 3, 2022Inventors: Sandeep Louis D'SOUZA, Vadim WINEBRAND, Mohamed AHMED, Syed Fawad AHMAD, Nathan Felix ALTMAN, Suhail JALIL, Livingstone SONG, Raj KUMAR, David CHANDLER, Masoud ROHAM, Xin FAN, Lennart Karl-Axel MATHE, Kostadin Dimitrov DJORDJEV, Deep BHATIA
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Publication number: 20220312115Abstract: Some disclosed devices may include a display stack, a cover layer proximate a first side of the display stack and a segmented transducer array proximate a second side of the display stack. The segmented transducer array may include a plurality of separate transducer segments. Each of the separate transducer segments may include a piezoelectric layer and a thin-film transistor (TFT) layer. The separate transducer segments may include transmitter transducer segments and receiver transducer segments. In some examples, a spacing between at least a first plurality of the transmitter transducer segments may correspond to a display stack and cover layer oscillation mode frequency in a range from 20 Hz to 20 kHz, from 15 kHz to 200 kHz or from 20 kHz to 400 kHz.Type: ApplicationFiled: March 23, 2021Publication date: September 29, 2022Inventors: Bernard HERRERA, Jessica Liu STROHMANN, Changting XU, Hrishikesh Vijaykumar PANCHAWAGH, Kostadin Dimitrov DJORDJEV
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Patent number: 11436857Abstract: An apparatus may include an ultrasonic sensor system having an ultrasonic transceiver layer, a thin-film transistor (TFT) layer and a frequency-differentiating layer. In some examples, the frequency-differentiating layer may include a first frequency-differentiating layer area corresponding to a lower-frequency area of the ultrasonic sensor system. The first frequency-differentiating layer area may include a first material having a first acoustic impedance. In some such examples, the frequency-differentiating layer may include a second frequency-differentiating layer area corresponding to a higher-frequency area of the ultrasonic sensor system. The second frequency-differentiating layer area may include a second material having a second acoustic impedance. The first acoustic impedance may, for example, be higher than the second acoustic impedance.Type: GrantFiled: August 30, 2021Date of Patent: September 6, 2022Assignee: QUALCOMM IncorporatedInventors: Jessica Liu Strohmann, Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Kostadin Dimitrov Djordjev
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Patent number: 11430249Abstract: An acoustic receiver system may be configured for receiving dynamic friction acoustic waves produced via relative motion between an outer surface of an apparatus and a target object in contact with the outer surface. A control system may be configured for receiving acoustic signals from the acoustic receiver system. The acoustic signals may correspond to a first instance of the dynamic friction acoustic waves. The control system may be configured for extracting target object features from the first acoustic signals and for performing an authentication process based, at least in part, on the target object features.Type: GrantFiled: May 30, 2019Date of Patent: August 30, 2022Assignee: QUALCOMM IncorporatedInventors: Soon Joon Yoon, Hrishikesh Vijaykumar Panchawagh, Jessica Liu Strohmann, Kostadin Dimitrov Djordjev
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Publication number: 20220268906Abstract: Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.Type: ApplicationFiled: May 13, 2022Publication date: August 25, 2022Inventors: Yipeng LU, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Kostadin Dimitrov DJORDJEV
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Patent number: 11393239Abstract: An ultrasonic sensor system may include an ultrasonic transceiver layer, a thin-film transistor (TFT) layer proximate a first side of the ultrasonic transceiver layer, a frequency-splitting layer proximate a second side of the ultrasonic transceiver layer and a high-impedance layer proximate the frequency-splitting layer. The frequency-splitting layer may reside between the ultrasonic transceiver layer and the high-impedance layer. The high-impedance layer may have a higher acoustic impedance than the frequency-splitting layer.Type: GrantFiled: July 1, 2020Date of Patent: July 19, 2022Assignee: QUALCOMM IncorporatedInventors: Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh, Nicholas Ian Buchan, Yipeng Lu, Kostadin Dimitrov Djordjev
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Patent number: 11394819Abstract: Various aspects of the present disclosure generally relate to control of a user device under a wet condition. In some aspects, a user device may determine whether the user device is operating under a wet condition; select, based at least in part on whether the user device is operating under the wet condition, a set of input components to control the user device, wherein the set of input components is selected from a plurality of different sets of input components; and configure a user interface of the user device according to the set of input components. Numerous other aspects are provided.Type: GrantFiled: January 13, 2020Date of Patent: July 19, 2022Assignee: QUALCOMM IncorporatedInventors: Sandeep Louis D'Souza, Vadim Winebrand, Mohamed Ahmed, Syed Fawad Ahmad, Nathan Felix Altman, Suhail Jalil, Livingstone Song, Raj Kumar, David Chandler, Masoud Roham, Xin Fan, Lennart Karl-Axel Mathe, Kostadin Dimitrov Djordjev, Deep Bhatia