Patents by Inventor Tuan Quoc Dao

Tuan Quoc Dao 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).

  • Patent number: 12166888
    Abstract: Systems and methods for encrypting data are described herein. For example, the system may receive, from an application associated with a provider system, a request for a delivery token. The request may include an address and an identifier of a distribution system. The system may determine a distributor key for decrypting delivery tokens for the distribution system. The system may also identify an encryption key for encrypts delivery tokens, where the encryption key corresponds to the distributor key. The system may generate the delivery token, including the address, using the encryption key. The system may then transmit the delivery token to the application associated with the provider system.
    Type: Grant
    Filed: May 10, 2024
    Date of Patent: December 10, 2024
    Assignee: Citibank, N.A.
    Inventors: Tuan Quoc Dao, Mayank Dinesh Shah
  • Publication number: 20160275393
    Abstract: The present disclosure is directed to a system and method for using magnetically coupled antennas to enhance receptivity and/or reading range of radio frequency (RF) transaction devices. In some implementations, a method for boosting RF signals includes wirelessly receiving an RF signal from a transaction terminal at a passive antenna. The passive antenna is magnetically coupled to the antenna of a transaction card. The transaction card is inserted in a mobile host device and configured to execute a payment application using user credentials in response to at least a transaction request and transmits at least one transaction response to the transaction terminal based, at least in part, on the executed transaction application and using the antenna either standalone or through the coupled antenna configuration. The RF signal is transmitted to the transaction card using the inductive coupling with the terminal.
    Type: Application
    Filed: March 23, 2016
    Publication date: September 22, 2016
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 9418362
    Abstract: The present disclosure is directed to a system and method for amplifying Radio Frequency (RF) signals. In some implementations, a system includes a first interface, a second interface, secure memory, a user-interface module, a processing module, and am amplification module. The first interface connects to a microSD slot of a mobile host device. The second interface includes an internal antenna for wirelessly communicating with retail terminals. The secure memory stores user credentials and a payment application used to execute financial transactions with the retail terminals. The processing module executes the payment application using the user credentials in response to at least a transaction request received by the RF module and transmits at least one transaction response to the retail terminal based, at least in part, on the executed payment application. The amplification module connected to a lead of the antenna and is configured to amplify at least received RF signals.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: August 16, 2016
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Publication number: 20160148188
    Abstract: The present disclosure is directed to a system and method for switching between internal and external antennas. In some implementations, a system includes an antenna, a connector, and a housing. The antenna is configured to communicate wirelessly transactions with transaction terminals. The connector is connected to the antenna and configured to connect a transaction card to the antenna in response to at least insertion in the housing. The housing enclosing at least a portion of the antenna and at least a portion of the connector and including one or more elements that form an opening for receiving the transaction card. In addition, the housing is substantially rectangular and includes a first portion with a first thickness and a second portion with a second thickness different from the first thickness and at least the thickness of the transaction card.
    Type: Application
    Filed: November 23, 2015
    Publication date: May 26, 2016
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 9311766
    Abstract: The present disclosure is directed to a system and method for wirelessly communicating Radio Frequency (RF) signals. In some implementations, a microSD payment system includes an antenna element and a card element. The antenna element affixes to a surface of a mobile device and includes antenna for wireless communicating RF signals with retail terminals and a connection to a microSD card element. The card element includes a shape and dimensions approximately equal to a standard microSD card and wirelessly executes transactions with the retail terminals using the antenna of the antenna element.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: April 12, 2016
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao, Amitaabh Malhotra
  • Publication number: 20160098627
    Abstract: The present disclosure is directed to a system and method for switching between internal and external antennas. In some implementations, a system includes an antenna, a connector, and a housing. The antenna is configured to communicate wirelessly transactions with transaction terminals. The connector is connected to the antenna and configured to connect a transaction card to the antenna in response to at least insertion in the housing. The housing enclosing at least a portion of the antenna and at least a portion of the connector and including one or more elements that form an opening for receiving the transaction card. In addition, the housing is substantially rectangular and includes a first portion with a first thickness and a second portion with a second thickness different from the first thickness and at least the thickness of the transaction card.
    Type: Application
    Filed: October 5, 2015
    Publication date: April 7, 2016
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 9304555
    Abstract: The present disclosure is directed to a system and method for using magnetically coupled antennas to enhance receptivity and/or reading range of radio frequency (RF) transaction devices. In some implementations, a method for boosting RF signals includes wirelessly receiving an RF signal from a transaction terminal at a passive antenna. The passive antenna is magnetically coupled to the antenna of a transaction card. The transaction card is inserted in a mobile host device and configured to execute a payment application using user credentials in response to at least a transaction request and transmits at least one transaction response to the transaction terminal based, at least in part, on the executed transaction application and using the antenna either standalone or through the coupled antenna configuration. The RF signal is transmitted to the transaction card using the inductive coupling with the terminal.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: April 5, 2016
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 9195931
    Abstract: The present disclosure is directed to a system and method for switching between internal and external antennas. In some implementations, a system includes an antenna, a connector, and a housing. The antenna is configured to communicate wirelessly transactions with transaction terminals. The connector is connected to the antenna and configured to connect a transaction card to the antenna in response to at least insertion in the housing. The housing enclosing at least a portion of the antenna and at least a portion of the connector and including one or more elements that form an opening for receiving the transaction card. In addition, the housing is substantially rectangular and includes a first portion with a first thickness and a second portion with a second thickness different from the first thickness and at least the thickness of the transaction card.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: November 24, 2015
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 9152911
    Abstract: The present disclosure is directed to a system and method for switching between internal and external antennas. In some implementations, a system includes an antenna, a connector, and a housing. The antenna is configured to communicate wirelessly transactions with transaction terminals. The connector is connected to the antenna and configured to connect a transaction card to the antenna in response to at least insertion in the housing. The housing enclosing at least a portion of the antenna and at least a portion of the connector and including one or more elements that form an opening for receiving the transaction card. In addition, the housing is substantially rectangular and includes a first portion with a first thickness and a second portion with a second thickness different from the first thickness and at least the thickness of the transaction card.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: October 6, 2015
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Publication number: 20150066760
    Abstract: The present disclosure is directed to a system and method for amplifying Radio Frequency (RF) signals. In some implementations, a system includes a first interface, a second interface, secure memory, a user-interface module, a processing module, and am amplification module. The first interface connects to a microSD slot of a mobile host device. The second interface includes an internal antenna for wirelessly communicating with retail terminals. The secure memory stores user credentials and a payment application used to execute financial transactions with the retail terminals. The processing module executes the payment application using the user credentials in response to at least a transaction request received by the RF module and transmits at least one transaction response to the retail terminal based, at least in part, on the executed payment application. The amplification module connected to a lead of the antenna and is configured to amplify at least received RF signals.
    Type: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 8925827
    Abstract: The present disclosure is directed to a system and method for amplifying Radio Frequency (RF) signals. In some implementations, a system includes a first interface, a second interface, secure memory, a user-interface module, a processing module, and am amplification module. The first interface connects to a microSD slot of a mobile host device. The second interface includes an internal antenna for wirelessly communicating with retail terminals. The secure memory stores user credentials and a payment application used to execute financial transactions with the retail terminals. The processing module executes the payment application using the user credentials in response to at least a transaction request received by the RF module and transmits at least one transaction response to the retail terminal based, at least in part, on the executed payment application. The amplification module connected to a lead of the antenna and is configured to amplify at least received RF signals.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: January 6, 2015
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 8915447
    Abstract: The present disclosure is directed to a system and method for amplifying Radio Frequency (RF) signals. In some implementations, a system includes a first interface, a second interface, secure memory, a user-interface module, a processing module, and am amplification module. The first interface connects to a microSD slot of a mobile host device. The second interface includes an internal antenna for wirelessly communicating with retail terminals. The secure memory stores user credentials and a payment application used to execute financial transactions with the retail terminals. The processing module executes the payment application using the user credentials in response to at least a transaction request received by the RF module and transmits at least one transaction response to the retail terminal based, at least in part, on the executed payment application. The amplification module connected to a lead of the antenna and is configured to amplify at least received RF signals.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: December 23, 2014
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Publication number: 20140129356
    Abstract: The present disclosure is directed to a system and method for updating mobile devices with additional elements. In some implementations, a cover for a mobile device includes side surfaces, a rear surface, a physical interface, and a circuit. The side surfaces and the rear surface are configured to be adjacent at least a portion one or more side surfaces of the mobile phone. The side surfaces and the rear surface form an opening that receives at least a portion of the mobile device. A first portion of at least one of the surfaces includes a connector for connecting to a port of the mobile phone. The physical interface includes in at least one of the surfaces that receives a memory device external to the mobile device. The circuit connects the physical interface to the connector.
    Type: Application
    Filed: September 27, 2013
    Publication date: May 8, 2014
    Applicant: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 8548540
    Abstract: The present disclosure is directed to a system and method for updating mobile devices with additional elements. In some implementations, a cover for a mobile device includes side surfaces, a rear surface, a physical interface, and a circuit. The side surfaces and the rear surface are configured to be adjacent at least a portion one or more side surfaces of the mobile phone. The side surfaces and the rear surface form an opening that receives at least a portion of the mobile device. A first portion of at least one of the surfaces includes a connector for connecting to a port of the mobile phone. The physical interface includes in at least one of the surfaces that receives a memory device external to the mobile device. The circuit connects the physical interface to the connector.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: October 1, 2013
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 8380259
    Abstract: The present disclosure is directed to a system and method for wirelessly accessing broadband services using intelligent covers. In some implementations, a cover for a consumer device includes side surfaces, a rear surface, a physical interface, a circuit, and a broadband service card. The side surfaces and a rear surface form an opening that receives at least a portion of a consumer device. A first portion of at least one of the surfaces includes a connector for connecting to a port of the consumer device. The circuit connects the physical interface to the connector. The broadband service card connected to the physical interface and accesses a service foreign through the wireless broadband network independent of the consumer device.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: February 19, 2013
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Publication number: 20120267437
    Abstract: The present disclosure is directed to a system and method for amplifying Radio Frequency (RF) signals. In some implementations, a system includes a first interface, a second interface, secure memory, a user-interface module, a processing module, and am amplification module. The first interface connects to a microSD slot of a mobile host device. The second interface includes an internal antenna for wirelessly communicating with retail terminals. The secure memory stores user credentials and a payment application used to execute financial transactions with the retail terminals. The processing module executes the payment application using the user credentials in response to at least a transaction request received by the RF module and transmits at least one transaction response to the retail terminal based, at least in part, on the executed payment application. The amplification module connected to a lead of the antenna and is configured to amplify at least received RF signals.
    Type: Application
    Filed: October 16, 2009
    Publication date: October 25, 2012
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Publication number: 20120231766
    Abstract: The present disclosure is directed to a system and method for wirelessly accessing broadband services using intelligent covers. In some implementations, a cover for a consumer device includes side surfaces, a rear surface, a physical interface, a circuit, and a broadband service card. The side surfaces and a rear surface form an opening that receives at least a portion of a consumer device. A first portion of at least one of the surfaces includes a connector for connecting to a port of the consumer device. The circuit connects the physical interface to the connector. The broadband service card connected to the physical interface and accesses a service foreign through the wireless broadband network independent of the consumer device.
    Type: Application
    Filed: May 25, 2012
    Publication date: September 13, 2012
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Patent number: 8190221
    Abstract: The present disclosure is directed to a system and method for wirelessly accessing broadband services using intelligent covers. In some implementations, a cover for a consumer device includes side surfaces, a rear surface, a physical interface, a circuit, and a broadband service card. The side surfaces and a rear surface form an opening that receives at least a portion of a consumer device. A first portion of at least one of the surfaces includes a connector for connecting to a port of the consumer device. The circuit connects the physical interface to the connector. The broadband service card connected to the physical interface and accesses a service foreign through the wireless broadband network independent of the consumer device.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: May 29, 2012
    Assignee: DeviceFidelity, Inc.
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Publication number: 20120074231
    Abstract: The present disclosure is directed to a system and method for switching between internal and external antennas. In some implementations, a system includes an antenna, a connector, and a housing. The antenna is configured to communicate wirelessly transactions with transaction terminals. The connector is connected to the antenna and configured to connect a transaction card to the antenna in response to at least insertion in the housing. The housing enclosing at least a portion of the antenna and at least a portion of the connector and including one or more elements that form an opening for receiving the transaction card. In addition, the housing is substantially rectangular and includes a first portion with a first thickness and a second portion with a second thickness different from the first thickness and at least the thickness of the transaction card.
    Type: Application
    Filed: November 29, 2011
    Publication date: March 29, 2012
    Inventors: Deepak Jain, Tuan Quoc Dao
  • Publication number: 20120061466
    Abstract: The present disclosure is directed to a system and method for switching between internal and external antennas. In some implementations, a system includes an antenna, a connector, and a housing. The antenna is configured to communicate wirelessly transactions with transaction terminals. The connector is connected to the antenna and configured to connect a transaction card to the antenna in response to at least insertion in the housing. The housing enclosing at least a portion of the antenna and at least a portion of the connector and including one or more elements that form an opening for receiving the transaction card. In addition, the housing is substantially rectangular and includes a first portion with a first thickness and a second portion with a second thickness different from the first thickness and at least the thickness of the transaction card.
    Type: Application
    Filed: November 22, 2011
    Publication date: March 15, 2012
    Inventors: Deepak Jain, Tuan Quoc Dao