Patents by Inventor Yiu Kwong Chan
Yiu Kwong Chan 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: 10867150Abstract: Low power input object settlement detection systems and methods for operating a capacitive sensor having a plurality, M, of transmitter electrodes and a plurality, N, of receiver electrodes, wherein N and M are integer values. A plurality of input object settlement scans are captured, when a presence of an input object is detected, or in response to a presence of an input object being detected, wherein capturing each input object settlement scan includes driving all or a portion of the plurality, M, of transmitter electrodes simultaneously and detecting receiver signals from at least a subset of the plurality, N, of receiver electrodes simultaneously. When a difference between subsequent input object settlement scans is below a threshold value, a full input object image is acquired.Type: GrantFiled: September 12, 2018Date of Patent: December 15, 2020Assignee: Synaptics IncorporatedInventors: Guozhong Shen, Ozan Ersan Erdogan, Syed Mahmud, Philip Yiu Kwong Chan, Nan Wang
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Patent number: 10380402Abstract: A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.Type: GrantFiled: November 7, 2017Date of Patent: August 13, 2019Assignee: Synaptics IncorporatedInventors: Erik Jonathon Thompson, Frank Schwab, Anthony P. Russo, Bjoren Davis, Charles Bellman, Gregory Lewis Dean, Philip Yiu Kwong Chan, Jaswinder Jandu
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Publication number: 20190080135Abstract: Low power input object settlement detection systems and methods for operating a capacitive sensor having a plurality, M, of transmitter electrodes and a plurality, N, of receiver electrodes, wherein N and M are integer values. A plurality of input object settlement scans are captured, when a presence of an input object is detected, or in response to a presence of an input object being detected, wherein capturing each input object settlement scan includes driving all or a portion of the plurality, M, of transmitter electrodes simultaneously and detecting receiver signals from at least a subset of the plurality, N, of receiver electrodes simultaneously. When a difference between subsequent input object settlement scans is below a threshold value, a full input object image is acquired.Type: ApplicationFiled: September 12, 2018Publication date: March 14, 2019Inventors: Guozhong Shen, Ozan Ersan Erdogan, Syed Mahmud, Philip Yiu Kwong Chan, Nan Wang
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Publication number: 20180068161Abstract: A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.Type: ApplicationFiled: November 7, 2017Publication date: March 8, 2018Inventors: Erik Jonathon Thompson, Frank Schwab, Anthony P. Russo, Bjoren Davis, Charles Bellman, Gregory Lewis Dean, Philip Yiu Kwong Chan, Jaswinder Jandu
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Patent number: 9836638Abstract: A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.Type: GrantFiled: December 1, 2015Date of Patent: December 5, 2017Assignee: Synaptics IncorporatedInventors: Erik Jonathon Thompson, Frank Schwab, Anthony P. Russo, Bjoren Davis, Charles Bellman, Gregory Lewis Dean, Philip Yiu Kwong Chan, Jaswinder Jandu
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Patent number: 9665762Abstract: A biometric authentication apparatus and method is disclosed which may comprise a biometric authentication unit which may comprise: a biometric object sensor comprising sensor elements and a sensor computing device; a wake-on-event logic controller maintaining the sensor computing device in one of a powered-off or powered down mode, and including a bulk biometric object detector configured to detect a biometric object on or in the vicinity of the sensor elements and to power-on or power-up the sensor computing device responsive to the detection of the biometric object on or in the vicinity of the sensor elements; the sensor computing device configured to analyze one or more lines of biometric object image comprising a partial biometric object image and determine if the partial biometric image belongs to a biometric object desired to be imaged to obtain a complete biometric object image, and to provide a power-on or power-up signal to a host electronic device computing device when the partial biometric image iType: GrantFiled: February 13, 2013Date of Patent: May 30, 2017Assignee: Synaptics IncorporatedInventors: Erik Jonathon Thompson, Charles Walter Bellman, Anthony P. Russo, Philip Yiu Kwong Chan, Bjoren Kurt Davis, Gregory Lewis Dean, Richard Alexander Erhart, Jaswinder Jandu, Ty Bao Lien, Frank Schwab
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Patent number: 9444145Abstract: An antenna, especially for use with a handheld RFID reader for scanning RFID tags oriented in different orientations, includes a feeding port located on an axis for supplying an RF signal to a primary antenna member for transmitting and receiving electromagnetic waves. A secondary antenna member is juxtaposed with the primary antenna member for re-radiating the electromagnetic waves propagated by the primary antenna member. Each antenna member includes one antenna element extending in a radial direction away from the axis and continuing along at least one turn in a turning direction at least partly about the axis, and another antenna element extending in an opposite radial direction away from the axis and continuing along at least one turn in the turning direction at least partly about the axis. The electromagnetic waves have congruent slant polarizations each having components in both of two mutually orthogonal planes to read the tags.Type: GrantFiled: March 4, 2014Date of Patent: September 13, 2016Assignee: Symbol Technologies, LLCInventor: Yiu Kwong Chan
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Publication number: 20160162725Abstract: A system and method is disclosed for comparing biometric image data to a stored enrollment template that may comprise collecting a set of biometric image data for a biometric object image from a biometric object imaging sensor; storing the biometric object image data in a memory as an enrollment template for further comparison to find a match with subsequently imaged biometric object image data; collecting a subsequent set of biometric image data for a biometric object image from the biometric object imaging sensor; updating the enrollment template; determining if a limited enrollment window remains open; and repeating the collecting of a subsequent set of biometric data step if the enrollment window remains open. Determining if the enrollment window remains open may be by determining the existence of one of a stability indicator and an instability indicator.Type: ApplicationFiled: February 4, 2016Publication date: June 9, 2016Inventors: Anthony P. Russo, Larry E. Hattery, Rohini Krishnapura, Phillip Yiu Kwong Chan
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Publication number: 20160104025Abstract: A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.Type: ApplicationFiled: December 1, 2015Publication date: April 14, 2016Inventors: Erik Jonathon Thompson, Frank Schwab, Anthony P. Russo, Bjoren Davis, Charles Bellman, Gregory Lewis Dean, Philip Yiu Kwong Chan, Jaswinder Jandu
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Patent number: 9268991Abstract: A system and method is disclosed for comparing biometric image data to a stored enrollment template that may comprise collecting a set of biometric image data for a biometric object image from a biometric object imaging sensor; storing the biometric object image data in a memory as an enrollment template for further comparison to find a match with subsequently imaged biometric object image data; collecting a subsequent set of biometric image data for a biometric object image from the biometric object imaging sensor; updating the enrollment template; determining if a limited enrollment window remains open; and repeating the collecting of a subsequent set of biometric data step if the enrollment window remains open. Determining if the enrollment window remains open may be by determining the existence of one of a stability indicator and an instability indicator.Type: GrantFiled: March 26, 2013Date of Patent: February 23, 2016Assignee: Synaptics IncorporatedInventors: Anthony P. Russo, Larry E. Hattery, Rohini Krishnapura, Philip Yiu Kwong Chan
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Patent number: 9208371Abstract: A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.Type: GrantFiled: September 26, 2013Date of Patent: December 8, 2015Assignee: Synaptics IncorporatedInventors: Erik Jonathon Thompson, Frank Schwab, Anthony P. Russo, Bjoren Davis, Charles Bellman, Gregory Lewis Dean, Philip Yiu Kwong Chan, Jaswinder Jandu
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Publication number: 20150255873Abstract: An antenna, especially for use with a handheld RFID reader for scanning RFID tags oriented in different orientations, includes a feeding port located on an axis for supplying an RF signal to a primary antenna member for transmitting and receiving electromagnetic waves. A secondary antenna member is juxtaposed with the primary antenna member for re-radiating the electromagnetic waves propagated by the primary antenna member. Each antenna member includes one antenna element extending in a radial direction away from the axis and continuing along at least one turn in a turning direction at least partly about the axis, and another antenna element extending in an opposite radial direction away from the axis and continuing along at least one turn in the turning direction at least partly about the axis. The electromagnetic waves have congruent slant polarizations each having components in both of two mutually orthogonal planes to read the tags.Type: ApplicationFiled: March 4, 2014Publication date: September 10, 2015Inventor: YIU KWONG CHAN
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Patent number: 9000894Abstract: A method and apparatus for improving reception of responsive RFID signals is provided. The method includes transmitting a plurality of interrogation signals each having a different polarization to activate one or more RFID tags. Responsive signals from the RFID tags are analyzed for receive symbol quality data to select a transmit polarization subset. These polarizations are then used for transmitting further interrogation signals to the RFID tags. The apparatus includes a dual element orthogonal radiator coupled to a transmitter and receiver. A processor controls the transmitter and receiver to transmit a series of RFID interrogation signals each having a different polarization, and receive a series of responsive signals from one or more RFID tags. The responsive signals are analyzed to select a particular a transmit polarization subset that will improve reception of future responsive signals from the RFID tags.Type: GrantFiled: July 31, 2012Date of Patent: April 7, 2015Assignee: Symbol Technologies, Inc.Inventors: Yiu Kwong Chan, Aviv Shacher
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Patent number: 8904495Abstract: A user transaction request is received at a client device. A web browser plug-in communicates the user transaction request to a server that determines whether the user transaction request is a secure transaction. Transaction data is received from the server via the web browser plug-in. If the received transaction data indicates a secure transaction, the user is prompted to provide biometric data, which is received from the user. The web browser plug-in then communicates a transaction confirmation to the server.Type: GrantFiled: March 31, 2010Date of Patent: December 2, 2014Assignee: Synaptics IncorporatedInventors: Davit Baghdasaryan, Ramesh Kesanupalli, Frank Schwab, Philip Yiu Kwong Chan, Larry Hattery
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Patent number: 8799666Abstract: An apparatus includes a biometric sensor capable of identifying biometric information associated with a user. A storage device coupled to the biometric sensor stores user information. A biometric service is coupled to the biometric sensor and capable of communicating with the biometric sensor. A web browser application having a biometric extension communicates with the biometric sensor via the biometric service. The web browser's biometric extension is capable of communicating with multiple web servers.Type: GrantFiled: March 24, 2010Date of Patent: August 5, 2014Assignee: Synaptics IncorporatedInventors: Ramesh Kesanupalli, Davit Baghdasaryan, Frank Schwab, Philip Yiu Kwong Chan, Larry Hattery
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Publication number: 20140198960Abstract: A biometric authentication apparatus and method is disclosed which may comprise a biometric authentication unit which may comprise: a biometric object sensor comprising sensor elements and a sensor computing device; a wake-on-event logic controller maintaining the sensor computing device in one of a powered-off or powered down mode, and including a bulk biometric object detector configured to detect a biometric object on or in the vicinity of the sensor elements and to power-on or power-up the sensor computing device responsive to the detection of the biometric object on or in the vicinity of the sensor elements; the sensor computing device configured to analyze one or more lines of biometric object image comprising a partial biometric object image and determine if the partial biometric image belongs to a biometric object desired to be imaged to obtain a complete biometric object image, and to provide a power-on or power-up signal to a host electronic device computing device when the partial biometric image iType: ApplicationFiled: February 13, 2013Publication date: July 17, 2014Applicant: Synaptics IncorporatedInventors: Erik Jonathon THOMPSON, Charles Walter BELLMAN, Anthony P. Russo, Philip Yiu Kwong CHAN, Bjoren Kurt DAVIS, Gregory Lewis DEAN, Richard Alexander ERHART, Jaswinder JANDU, Ty Bao LIEN, Frank SCHWAB
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Publication number: 20140093143Abstract: A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.Type: ApplicationFiled: September 26, 2013Publication date: April 3, 2014Applicant: Validity Sensors, Inc.Inventors: Erik Jonathon THOMPSON, Frank SCHWAB, Anthony P. RUSSO, Bjoren DAVIS, Charles BELLMAN, Gregory Lewis DEAN, Philip Yiu Kwong CHAN, Jaswinder JANDU
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Publication number: 20140035731Abstract: A method and apparatus for improving reception of responsive RFID signals is provided. The method includes transmitting a plurality of interrogation signals each having a different polarization to activate one or more RFID tags. Responsive signals from the RFID tags are analyzed for receive symbol quality data to select a transmit polarization subset. These polarizations are then used for transmitting further interrogation signals to the RFID tags. The apparatus includes a dual element orthogonal radiator coupled to a transmitter and receiver. A processor controls the transmitter and receiver to transmit a series of RFID interrogation signals each having a different polarization, and receive a series of responsive signals from one or more RFID tags. The responsive signals are analyzed to select a particular a transmit polarization subset that will improve reception of future responsive signals from the RFID tags.Type: ApplicationFiled: July 31, 2012Publication date: February 6, 2014Applicant: MOTOROLA SOLUTIONS, INC.Inventors: Yiu Kwong CHAN, Aviv SHACHER
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Publication number: 20130259330Abstract: A system and method is disclosed for comparing biometric image data to a stored enrollment template that may comprise collecting a set of biometric image data for a biometric object image from a biometric object imaging sensor; storing the biometric object image data in a memory as an enrollment template for further comparison to find a match with subsequently imaged biometric object image data; collecting a subsequent set of biometric image data for a biometric object image from the biometric object imaging sensor; updating the enrollment template; determining if a limited enrollment window remains open; and repeating the collecting of a subsequent set of biometric data step if the enrollment window remains open. Determining if the enrollment window remains open may be by determining the existence of one of a stability indicator and an instability indicator.Type: ApplicationFiled: March 26, 2013Publication date: October 3, 2013Applicant: Validity Sensors, Inc.Inventors: Anthony P. RUSSO, Larry E. HATTERY, Rohini KRISHNAPURA, Philip Yiu Kwong CHAN
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Patent number: 8204281Abstract: A method and device for removing common artifacts, such as stiction, from fingerprint scans created by partial fingerprint scanners. The partial fingerprint scanner data is assessed to determine if successive partial fingerprint images are overly similar to each other, which can occur during stiction. If this similarity exceeds a preset threshold, then at least some of the overly similar partial images will be removed (redacted) from the overall image dataset. The complete overall image is generated from the redacted data set. This method is particularly useful for creating “intelligent” low-cost, low power partial fingerprint scanners and scanner driver chips that can pre-process the partial fingerprint data that is generated during the course of a finger swipe, and remove stiction artifacts on a real-time or near-real time basis using relatively simple and low power on-chip processing circuits, and then send the corrected data to more sophisticated processors for subsequent fingerprint analysis.Type: GrantFiled: December 14, 2007Date of Patent: June 19, 2012Assignee: Validity Sensors, Inc.Inventors: Pallavi Satyan, Philip Yiu Kwong Chan