Patents by Inventor Cong T. Nguyen

Cong T. Nguyen 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: 10048921
    Abstract: A multimedia device engaged in wireless transmission of content to a remote display may format graphical user interface content for the remote display. The device may also communicate with a human interface device such as a remote control. The remote control may send control information to the multimedia device to control the remote display.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: August 14, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Vijayalakshmi R. Raveendran, Yu A. Wang, Jae-Hee Choi, Cong T. Nguyen
  • Patent number: 9318801
    Abstract: A wireless device is described. The wireless device includes an antenna. The wireless device also includes a hybrid transformer. The wireless device further includes a frequency matching termination port. The frequency matching termination port provides impedance matching with the antenna at multiple frequencies. The frequency matching termination port may include multiple resistors, inductors and capacitors that can be switched in/out.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 19, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Bruce Judson, Cong T Nguyen, Peter D Heidmann, Joseph Patrick Burke, Vladimir Aparin
  • Patent number: 9252831
    Abstract: Exemplary embodiments are directed to systems, devices, and methods for mitigating effects of transmit signal leakage. A transceiver may include a transmitter and a receiver. The transceiver may further include a multi-tap analog adaptive filter coupled to each of the transmitter and the receiver and configured to generate an estimated transmit leakage signal based on at least a portion of a transmit signal from the transmitter and an error signal from the receiver.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: February 2, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Roberto Rimini, Cong T Nguyen, Peter D Heidmann, Joseph Patrick Burke, Vladimir Aparin
  • Publication number: 20140247757
    Abstract: Exemplary embodiments are directed to systems, devices, and methods for mitigating effects of transmit signal leakage. A transceiver may include a transmitter and a receiver. The transceiver may further include a multi-tap analog adaptive filter coupled to each of the transmitter and the receiver and configured to generate an estimated transmit leakage signal based on at least a portion of a transmit signal from the transmitter and an error signal from the receiver.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 4, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Roberto Rimini, Cong T. Nguyen, Peter D. Heidmann, Joseph Patrick Burke, Vladimir Aparin
  • Publication number: 20140170991
    Abstract: A method of performing interference cancellation in a communication device having a plurality of transceivers includes: detecting a co-existence issue between a first transceiver and a second transceiver of the plurality of transceivers; determining parameters of the co-existence issue; selecting the first transceiver for providing an input signal to an interference cancellation (IC) circuit; selecting the second transceiver for receiving an output signal from the IC circuit; configuring the IC circuit based on the parameters of the co-existence issue; and generating the output signal based on the input signal and the parameters to reduce interference caused by the first transceiver on the second transceiver.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 19, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Bongyong SONG, Samir Salib SOLIMAN, Cong T. NGUYEN
  • Patent number: 8693520
    Abstract: One feature provides a method for transmitting content to a receiving device, by establishing channel hopping sequence information with the receiving device via a first communication band. The channel hopping sequence information is associated with a plurality of traffic channels within a second communication band. Moreover, the method entails transmitting the content to the receiving device through the plurality of traffic channels via the second communication band using a channel hopping scheme implemented according to the channel hopping sequence information. In one embodiment, establishing the channel hopping sequence information with the receiving device via the first communication band further includes: obtaining a channel hopping sequence key; and transmitting the channel hopping sequence key to the receiving device within the first communication band.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: April 8, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yong Jin Kim, Cong T. Nguyen, Babak Aryan, Vijayalakshmi R. Raveendran
  • Publication number: 20140073281
    Abstract: A preselect circuit maintains the dynamic range of a received RF input signal during bandpass filtering of the received RF input signal. The preselect circuit includes a Q-deficient passive bandpass filter for coupling to an antenna to receive a received RF input signal. The preselect circuit further includes a Q-enhancement circuit coupled to the Q-deficient passive bandpass filter, wherein the Q-enhancement circuit increases a Q-value of the Q-deficient passive bandpass filter by compensating for resistive inductive losses in the bandpass filter.
    Type: Application
    Filed: November 12, 2013
    Publication date: March 13, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Bruce A. Judson, Cong T. Nguyen
  • Publication number: 20130335291
    Abstract: A wireless device is described. The wireless device includes an antenna. The wireless device also includes a hybrid transformer. The wireless device further includes a frequency matching termination port. The frequency matching termination port provides impedance matching with the antenna at multiple frequencies. The frequency matching termination port may include multiple resistors, inductors and capacitors that can be switched in/out.
    Type: Application
    Filed: March 14, 2013
    Publication date: December 19, 2013
    Applicant: QUALCOMM INCORPORATED
    Inventors: Bruce Judson, Cong T Nguyen, Peter D. Heidmann, Joseph Patrick Burke, Vladimir Aparin
  • Patent number: 8606211
    Abstract: A preselect circuit maintains the dynamic range of a received RF input signal during bandpass filtering of the received RF input signal. The preselect circuit includes a Q-deficient passive bandpass filter for coupling to an antenna to receive a received RF input signal. The preselect circuit further includes a Q-enhancement circuit coupled to the Q-deficient passive bandpass filter, wherein the Q-enhancement circuit increases a Q-value of the Q-deficient passive bandpass filter by compensating for resistive inductive losses in the bandpass filter.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: December 10, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Bruce A. Judson, Cong T. Nguyen
  • Patent number: 8577377
    Abstract: Methods and apparatus for providing a wireless expansion network. In an aspect, an apparatus includes an expansion circuit configured to identify at least one of a selected uplink (UL) channel and a selected downlink (DL) channel that are provided by one of a primary network and an expansion network, and a processing circuit configured to switch to the at least one of the selected UL and DL channels. An apparatus includes means for obtaining link parameters associated with a primary network and an expansion network, means for identifying clients that are assigned transmission channels on both the primary network and the expansion network based on the link parameters, and means for transmitting messages to the clients to indicate the assigned transmission channels.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: November 5, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Stephen J. Shellhammer, Ahmed K. Sadek, Cong T. Nguyen
  • Patent number: 8538367
    Abstract: A filter circuit enhances a deficient Q-value in a filter stage and buffers the filter stage from subsequent filter stages using a common active device. A filter circuit includes a first buffered filtering stage including a first Q-deficient filter stage to receive an input signal and a first Q-enhancement buffer stage. The first Q-enhancement buffer stage is coupled to the first Q-deficient filter stage, wherein the first Q-enhancement buffer stage includes a single active device to increase a Q-value of the first Q-deficient filter stage and isolate the first Q-deficient filter stage from any subsequent filter stage. A filtering method includes filtering an input signal in a first Q-deficient filter stage and enhancing a deficient Q-value of the first Q-deficient filter stage with an active device. The method further includes buffering the first Q-deficient filter stage from any subsequent filter stage with the active device.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: September 17, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Bruce A. Judson, Cong T. Nguyen
  • Publication number: 20110219420
    Abstract: A multimedia device engaged in wireless transmission of content to a remote display may format graphical user interface content for the remote display. The device may also communicate with a human interface device such as a remote control. The remote control may send control information to the multimedia device to control the remote display.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 8, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Vijayalakshmi R. Raveendran, Yu A. Wang, Jae-Hee Choi, Cong T. Nguyen
  • Publication number: 20110080935
    Abstract: One feature provides a method for transmitting content to a receiving device, by establishing channel hopping sequence information with the receiving device via a first communication band. The channel hopping sequence information is associated with a plurality of traffic channels within a second communication band. Moreover, the method entails transmitting the content to the receiving device through the plurality of traffic channels via the second communication band using a channel hopping scheme implemented according to the channel hopping sequence information. In one embodiment, establishing the channel hopping sequence information with the receiving device via the first communication band further includes: obtaining a channel hopping sequence key; and transmitting the channel hopping sequence key to the receiving device within the first communication band.
    Type: Application
    Filed: September 30, 2010
    Publication date: April 7, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Yong Jin Kim, Cong T. Nguyen, Babak Aryan, Vijayalakshmi R. Raveendran
  • Publication number: 20100330948
    Abstract: A filter circuit enhances a deficient Q-value in a filter stage and buffers the filter stage from subsequent filter stages using a common active device. A filter circuit includes a first buffered filtering stage including a first Q-deficient filter stage to receive an input signal and a first Q-enhancement buffer stage. The first Q-enhancement buffer stage is coupled to the first Q-deficient filter stage, wherein the first Q-enhancement buffer stage includes a single active device to increase a Q-value of the first Q-deficient filter stage and isolate the first Q-deficient filter stage from any subsequent filter stage. A filtering method includes filtering an input signal in a first Q-deficient filter stage and enhancing a deficient Q-value of the first Q-deficient filter stage with an active device. The method further includes buffering the first Q-deficient filter stage from any subsequent filter stage with the active device.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Bruce Judson, Cong T. Nguyen
  • Publication number: 20100323654
    Abstract: A preselect circuit maintains the dynamic range of a received RF input signal during bandpass filtering of the received RF input signal. The preselect circuit includes a Q-deficient passive bandpass filter for coupling to an antenna to receive a received RF input signal. The preselect circuit further includes a Q-enhancement circuit coupled to the Q-deficient passive bandpass filter, wherein the Q-enhancement circuit increases a Q-value of the Q-deficient passive bandpass filter by compensating for resistive inductive losses in the bandpass filter.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Bruce A. Judson, Cong T. Nguyen
  • Publication number: 20100184435
    Abstract: Methods and apparatus for providing a wireless expansion network. In an aspect, an apparatus includes an expansion circuit configured to identify at least one of a selected uplink (UL) channel and a selected downlink (DL) channel that are provided by one of a primary network and an expansion network, and a processing circuit configured to switch to the at least one of the selected UL and DL channels. An apparatus includes means for obtaining link parameters associated with a primary network and an expansion network, means for identifying clients that are assigned transmission channels on both the primary network and the expansion network based on the link parameters, and means for transmitting messages to the clients to indicate the assigned transmission channels.
    Type: Application
    Filed: January 22, 2009
    Publication date: July 22, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Stephen J. Shellhammer, Ahmed K. Sadek, Cong T. Nguyen