Patents by Inventor Prabhakar Tadepalli

Prabhakar Tadepalli 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).

  • Dual coil transaction card
    Patent number: 9715650
    Abstract: A secure transaction card does not interact with an interrogating radio frequency field without user interaction. The user interaction may include pressing on the card to cause a smartcard chip to connect to a coil on the card. The user interaction may also include exposing the card to light, motion, touch, or the like. Control of the secure transaction card may be active or passive.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: July 25, 2017
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Donald Allen Bloodworth, Prabhakar Tadepalli
  • Device with current carrying conductor to produce time-varying magnetic field
    Patent number: 9715649
    Abstract: An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electronic transaction card may have magnetic field producing circuitry compatible with magnetic card readers, smartcard circuitry, other point-of-sale interfaces, or any combination thereof.
    Type: Grant
    Filed: November 22, 2015
    Date of Patent: July 25, 2017
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Thomas N. Spitzer, Prabhakar Tadepalli
  • Personal digital identity device with near field and non near field radios for access control
    Patent number: 9659295
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: May 23, 2017
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • Provisioning mobile device with time-varying magnetic field
    Patent number: 9626611
    Abstract: An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electronic transaction card may have magnetic field producing circuitry compatible with magnetic card readers, smartcard circuitry, other point-of-sale interfaces, or any combination thereof.
    Type: Grant
    Filed: October 31, 2015
    Date of Patent: April 18, 2017
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Thomas N. Spitzer, Prabhakar Tadepalli
  • Configurable personal digital identity card with motion sensor responsive to user interaction
    Patent number: 9576281
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: February 21, 2017
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • DUAL COIL TRANSACTION CARD
    Publication number: 20170046608
    Abstract: A secure transaction card does not interact with an interrogating radio frequency field without user interaction. The user interaction may include pressing on the card to cause a smartcard chip to connect to a coil on the card. The user interaction may also include exposing the card to light, motion, touch, or the like. Control of the secure transaction card may be active or passive.
    Type: Application
    Filed: October 28, 2016
    Publication date: February 16, 2017
    Applicant: Tyfone, Inc.
    Inventors: Siva G. Narendra, Donald Allen Bloodworth, Prabhakar Tadepalli
  • COMPUTING DEVICE WITH NFC AND ACTIVE LOAD MODULATION
    Publication number: 20170046609
    Abstract: An RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in the form factor of a memory card or SIM card. Enhancement circuits enhance the usable read and write distance of the RFID card.
    Type: Application
    Filed: October 30, 2016
    Publication date: February 16, 2017
    Applicant: Tyfone, Inc.
    Inventors: Siva G. Narendra, Saurav Chakraborty, Prabhakar Tadepalli
  • Personal digital identity card with motion sensor responsive to user interaction
    Patent number: 9563892
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: February 7, 2017
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • PERSONAL DIGITAL IDENTITY DEVICE WITH NEAR FIELD AND NON NEAR FIELD RADIOS FOR ACCESS CONTROL
    Publication number: 20160366591
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Application
    Filed: August 26, 2016
    Publication date: December 15, 2016
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • MicroUSB lightning device with offset circuit board
    Patent number: 9520684
    Abstract: A Lightning connector compatible accessory device includes circuitry that is completely enveloped by a mobile device when the accessory device is inserted in a Lightning connector. The accessory device may include a microUSB connector on one end of a printed circuit board. The printed circuit board may be offset in a housing.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 13, 2016
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty
  • PERSONAL DIGITAL IDENTITY CARD WITH MOTION SENSOR RESPONSIVE TO USER INTERACTION
    Publication number: 20160358166
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Application
    Filed: August 15, 2016
    Publication date: December 8, 2016
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • CONFIGURABLE PERSONAL DIGITAL IDENTITY CARD WITH MOTION SENSOR RESPONSIVE TO USER INTERACTION
    Publication number: 20160358148
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Application
    Filed: August 16, 2016
    Publication date: December 8, 2016
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • Amplifier and transmission solution for 13.56MHz radio coupled to smartmx smartcard controller
    Patent number: 9489608
    Abstract: An RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in the form factor of a memory card or SIM card. Enhancement circuits enhance the usable read and write distance of the RFID card.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: November 8, 2016
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Saurav Chakraborty, Prabhakar Tadepalli
  • Amplifier and transmission solution for 13.56MHz radio coupled to smartcard controller
    Patent number: 9483722
    Abstract: An RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in the form factor of a memory card or SIM card. Enhancement circuits enhance the usable read and write distance of the RFID card.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: November 1, 2016
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Saurav Chakraborty, Prabhakar Tadepalli
  • Passive control secure transaction card
    Patent number: 9483723
    Abstract: A secure transaction card does not interact with an interrogating radio frequency field without user interaction. The user interaction may include pressing on the card to cause a smartcard chip to connect to a coil on the card. The user interaction may also include exposing the card to light, motion, touch, or the like. Control of the secure transaction card may be active or passive.
    Type: Grant
    Filed: October 6, 2013
    Date of Patent: November 1, 2016
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Donald Allen Bloodworth, Prabhakar Tadepalli
  • Configurable personal digital identity device with motion sensor responsive to user interaction
    Patent number: 9448543
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 20, 2016
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • Personal digital identity device with motion sensor responsive to user interaction
    Patent number: 9436165
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 6, 2016
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • Mobile device with a contactless smartcard device and active load modulation
    Patent number: 9390359
    Abstract: An RFID card includes a smartcard controller that receives power from a host device. The RFID card also includes a small inductive device capable of inductive coupling with an RFID reader. The small inductive device is small enough to fit in the form factor of a memory card or SIM card. Enhancement circuits enhance the usable read and write distance of the RFID card.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: July 12, 2016
    Assignee: Tyfone, Inc.
    Inventors: Siva G. Narendra, Saurav Chakraborty, Prabhakar Tadepalli
  • PERSONAL DIGITAL IDENTITY DEVICE WITH FINGERPRINT SENSOR AND CHALLENGE-RESPONSE KEY
    Publication number: 20160197727
    Abstract: A personal digital ID device provides a digital identifier to a service for a predetermined duration in response to user interaction. The user interaction may include a button press. The personal digital ID device may be in the form of a bracelet, a key fob, or other form factor. The service may be provided by a mobile device, in the cloud, or elsewhere.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty, Donald Allen Bloodworth
  • MICROUSB LIGHTNING DEVICE WITH OFFSET CIRCUIT BOARD
    Publication number: 20160181737
    Abstract: A Lightning connector compatible accessory device includes circuitry that is completely enveloped by a mobile device when the accessory device is inserted in a Lightning connector. The accessory device may include a microUSB connector on one end of a printed circuit board. The printed circuit board may be offset in a housing.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 23, 2016
    Inventors: Siva G. Narendra, Prabhakar Tadepalli, Saurav Chakraborty