Patents by Inventor Kishore Sundara-Rajan
Kishore Sundara-Rajan 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: 10162400Abstract: 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: GrantFiled: December 17, 2011Date of Patent: December 25, 2018Assignee: Wacom Co., Ltd.Inventors: Shahrooz Shahparnia, Trond Jarle Pedersen, John Logan, Vemund Kval Bakken, Kishore Sundara-Rajan
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Patent number: 10114484Abstract: 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: GrantFiled: March 20, 2017Date of Patent: October 30, 2018Assignee: Atmel CorporationInventors: Eivind Holsen, Shahrooz Shahparnia, Kishore Sundara-Rajan, Trond Jarle Pedersen, Vemund Kval Bakken, James D. Lyle
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Publication number: 20180299996Abstract: A method includes a processor of an electronic device receiving first input signals from a first sensor in response to user contact at a first edge of the device and second input signals from a second sensor in response to user contact at a second edge of the electronic device. The first and second sensors are covered by a housing of the device. The processor determines an external context of the device based on analysis of the first input signals and the second input signals. The determined external context indicates at least a position of the device relative to a user or an orientation of the device relative to a user. Responsive to determining the external context, the electronic device executes a particular user input action.Type: ApplicationFiled: April 18, 2017Publication date: October 18, 2018Inventors: Tyler Reed Kugler, Alexey Polyudov, Seungyon Lee, Yun-Ling Lee, Philip Quinn, Kishore Sundara-Rajan, Shumin Zhai, Debanjan Mukherjee, James B. Miller, Isaac William Reynolds
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Publication number: 20180300004Abstract: A method includes one or more processors of an electronic device receiving signals from multiple sensors located along an edge of the device. The signals are received in response to external contact being provided to the edge of the device. At least one processor determines a distribution of forces applied to the sensors based on the input signals. Based on the determined distribution of forces, the processor determines: i) a location of the external contact that is offset from a location of each of the multiple sensors, and ii) a magnitude of the force of the external contact. The processor detects whether sensing criteria has been satisfied based on an analysis of: i) the location of the external contact and ii) the magnitude of the force of the external contact. Responsive to detecting that sensing criteria has been satisfied, the processor executes a user input action.Type: ApplicationFiled: April 18, 2017Publication date: October 18, 2018Inventors: Tyler Reed Kugler, Stuart Murray Scott, Alexey Polyudov, Seungyon Lee, Philip Quinn, Kishore Sundara-Rajan, Shumin Zhai, Debanjan Mukherjee, James B. Miller
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Publication number: 20180292938Abstract: In general, this disclosure describes techniques for routing user inputs to an operating system or an application based on other inputs received at pressure sensors. In one example, computing device receives an indication of a first user input that is detected by pressure sensors of the computing device. The pressure sensors are positioned along two or more sides of a housing of the computing device. The computing device also receives an indication of a second user input, detected by a presence-sensitive display of the computing device. The computing device determines, based on the first user input, whether the second user input is associated with an application or an operating system executing at the computing device. Responsive to determining that the second user input is associated with the operating system, the computing device performs a system-level action.Type: ApplicationFiled: April 10, 2017Publication date: October 11, 2018Inventors: Thomas Ramon Karlo, Isaac Reynolds, Kishore Sundara-Rajan
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Publication number: 20180284906Abstract: An apparatus utilizes multiple strain gauge (“SG”) sensing units which are each disposed adjacent an inner surface of the device housing. Electrical voltage generated by the SGs is amplified by one or more amplifiers to maximize the resolution between a voltage output of an SG when in a non-pressed state and a voltage output of the SG when in a pressed state. Additionally, an electronic circuit is configured to identify a baseline voltage output for an SG over a period of time for comparing to a voltage output for the SG when the SG is in a pressed state such that the pressed state of the SG can be identified by the electronic circuit by comparing a current output voltage of the SG to the identified baseline voltage.Type: ApplicationFiled: May 29, 2018Publication date: October 4, 2018Inventors: Tyler Reed Kugler, Alexey Polyudov, Kishore Sundara-Rajan, Debanjan Mukherjee, James B. Miller, James Aaron Cooper, Kelvin Kwong, Philip Quinn
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Patent number: 10082889Abstract: In one embodiment, a device includes a stylus tip capable of communicating wirelessly with another device through a touch sensor of the other device. The stylus tip includes one or more surface areas, one or more substrates disposed along one or more of the surface areas of the stylus tip, and a plurality of electrodes disposed on or in the one or more substrates.Type: GrantFiled: December 21, 2011Date of Patent: September 25, 2018Assignee: Atmel CorporationInventors: Kishore Sundara-Rajan, Shahrooz Shahparnia
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Publication number: 20180217699Abstract: In one embodiment, a method includes detecting a touch of an object on a device. The method further includes predicting an area of the device to which the detected touch will move. Predicting the area of the device to which the detected touch will move is based at least in part on the following: a size of a footprint of the object, a speed of travel of the object, a latency associated with the object, a drive line pitch of a touch sensor of the device, and a frame rate.Type: ApplicationFiled: March 21, 2018Publication date: August 2, 2018Inventor: Kishore Sundara-Rajan
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Publication number: 20180188855Abstract: In one general aspect, a method can include identifying contact with a surface of a touch-sensitive input device, identifying a location of the contact on the surface of the touch-sensitive input device, and calculating a change in a mutual capacitance between a first electrode and a second electrode included in a sensor module disposed below the surface of the touch-sensitive input device. The first electrode can be adjacent to the second electrode. The first electrode and the second electrode can be located approximate to the identified location of the contact on the surface of the touch-sensitive input device. The method can include estimating a contact-coupled capacitance based on the calculated change in a mutual capacitance between the first electrode and the second electrode, and calculating a force applied to the surface of the touch-sensitive input device at the identified location.Type: ApplicationFiled: February 13, 2018Publication date: July 5, 2018Inventor: Kishore Sundara-Rajan
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Patent number: 10013081Abstract: An apparatus utilizes multiple strain gauge (“SG”) sensing units which are each disposed adjacent an inner surface of the device housing. Electrical voltage generated by the SGs is amplified by one or more amplifiers to maximize the resolution between a voltage output of an SG when in a non-pressed state and a voltage output of the SG when in a pressed state. Additionally, an electronic circuit is configured to identify a baseline voltage output for an SG over a period of time for comparing to a voltage output for the SG when the SG is in a pressed state such that the pressed state of the SG can be identified by the electronic circuit by comparing a current output voltage of the SG to the identified baseline voltage.Type: GrantFiled: April 4, 2017Date of Patent: July 3, 2018Assignee: Google LLCInventors: Tyler Reed Kugler, Alexey Polyudov, Kishore Sundara-Rajan, Debanjan Mukherjee, James B. Miller, James Aaron Cooper, Kelvin Kwong, Philip Quinn
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Patent number: 9965107Abstract: In one embodiment, a stylus includes electrodes operable to transmit signals wirelessly to a device through a touch sensor of the device. The stylus also includes one or more computer-readable non-transitory storage media within the stylus and embodying logic that is operable when executed to access first data representing a gesture made with the stylus by a user, such as a sequence of manipulations of the stylus. The logic is further operable to access second data representing a pre-defined authentication sequence and compare the first data with the second data. This comparison may authenticate the user to the stylus or the device, authenticate the stylus to the device or the user, or authenticate the device to the stylus or the user.Type: GrantFiled: July 24, 2012Date of Patent: May 8, 2018Assignee: Atmel CorporationInventors: Esat Yilmaz, John Logan, Vemund Kval Bakken, Kishore Sundara-Rajan
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Patent number: 9939965Abstract: In one embodiment, a method includes detecting a touch of an object on a device. The method also includes predicting an area of the device that the detected touch will move to. The method further includes sending a first set of drive signals to one or more drive lines within the predicted area, the first set of drive signals each having a first number of pulses. The method further includes sending a second set of drive signals to one or more drive lines outside the predicted area, the second set of drive signals each having a second number of pulses. Furthermore, the first number of pulses is greater than the second number of pulses.Type: GrantFiled: December 11, 2012Date of Patent: April 10, 2018Assignee: Atmel CorporationInventor: Kishore Sundara-Rajan
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Patent number: 9933866Abstract: In certain embodiments, a stylus includes one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for transmitting signals wirelessly to a device through a touch sensor of the device. At least some of the signals are high-voltage signals generated by a relatively large potential difference compared to a voltage within a voltage range of approximately 1 to approximately 3 volts. The stylus includes a stylus tip, and one or more of the one or more electrodes are disposed at the stylus tip.Type: GrantFiled: October 17, 2014Date of Patent: April 3, 2018Assignee: Atmel CorporationInventors: Shahrooz Shahparnia, Kishore Sundara-Rajan, Yassar Ali, Izhar Bentov
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Patent number: 9898153Abstract: In one general aspect, a method can include identifying contact with a surface of a touch-sensitive input device, identifying a location of the contact on the surface of the touch-sensitive input device, and calculating a change in a mutual capacitance between a first electrode and a second electrode included in a sensor module disposed below the surface of the touch-sensitive input device. The first electrode can be adjacent to the second electrode. The first electrode and the second electrode can be located approximate to the identified location of the contact on the surface of the touch-sensitive input device. The method can include estimating a contact-coupled capacitance based on the calculated change in a mutual capacitance between the first electrode and the second electrode, and calculating a force applied to the surface of the touch-sensitive input device at the identified location.Type: GrantFiled: March 2, 2016Date of Patent: February 20, 2018Assignee: GOOGLE LLCInventor: Kishore Sundara-Rajan
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Patent number: 9891723Abstract: In one embodiment, a stylus has one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for transmitting signals wirelessly to a device through a touch-sensor of the device. The stylus also has an electronic circuit operable to provide an input that changes a property of one or more materials located on the body of the stylus or on the stylus tip.Type: GrantFiled: October 6, 2015Date of Patent: February 13, 2018Assignee: Atmel CorporationInventors: Trond Jarle Pedersen, Esat Yilmaz, Kishore Sundara-Rajan
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Publication number: 20170255293Abstract: In one general aspect, a method can include identifying contact with a surface of a touch-sensitive input device, identifying a location of the contact on the surface of the touch-sensitive input device, and calculating a change in a mutual capacitance between a first electrode and a second electrode included in a sensor module disposed below the surface of the touch-sensitive input device. The first electrode can be adjacent to the second electrode. The first electrode and the second electrode can be located approximate to the identified location of the contact on the surface of the touch-sensitive input device. The method can include estimating a contact-coupled capacitance based on the calculated change in a mutual capacitance between the first electrode and the second electrode, and calculating a force applied to the surface of the touch-sensitive input device at the identified location.Type: ApplicationFiled: March 2, 2016Publication date: September 7, 2017Inventor: Kishore SUNDARA-RAJAN
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Patent number: 9740313Abstract: Systems, methods, and devices for monitoring use of a tip of a stylus, determining an amount of wear of or life remaining in the tip, and notifying a user when to replace the tip are disclosed. The tip should be replaced to avoid an abrasive material of the tip from being exposed and contacting a touch screen or other surface of a computing device to avoid scratching or otherwise damaging the touch screen or other surface of the computing device. The computing device or the stylus device may perform one or more of the monitoring, determining, or prompting steps.Type: GrantFiled: January 25, 2016Date of Patent: August 22, 2017Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Kishore Sundara-Rajan, Zachary Lawrence Brand, Piotr Pawel Blaszczak, Ann Yuhui Yun, Timothy Michael Vanderet, Miguel Angel Morales
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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: 9632597Abstract: A stylus device is disclosed that is capable of changing its output so that it can communicate and function with a multitude of touch controllers of a computing device. In an aspect, the stylus device receives a message including the configuration information from the computing device. The configuration information may include an encoding scheme corresponding to a format for encoding data to be sent to the computing device and an operating frequency. The stylus configures itself in the encoding scheme, and communicates with the computing device using the encoding scheme. For example, the stylus device may encode data using the encoding scheme and send the data at the operating frequency.Type: GrantFiled: June 12, 2014Date of Patent: April 25, 2017Assignee: AMAZON TECHNOLOGIES, INC.Inventors: Kishore Sundara-Rajan, Lakshman Rathnam
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Patent number: 9632598Abstract: A stylus device is disclosed that is adapted to change its operating frequency to accommodate for a changing noise environment. In an aspect, the stylus may communicate with a computing device using a first frequency. However, when a different frequency having a better signal to noise ration than the first frequency is available, the computing device may send a message to the stylus device to switch to a second frequency. For example, the stylus device may receive a message from the computing device including an indication to communicate with the computing device on the second frequency. The stylus device may configure itself to operate at the second frequency and communicate with the computing device using the second frequency.Type: GrantFiled: June 12, 2014Date of Patent: April 25, 2017Assignee: AMAZON TECHNOLOGIES, INC.Inventor: Kishore Sundara-Rajan