Patents by Inventor Roger Chi-yee Cheung

Roger Chi-yee Cheung 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).

  • Reducing power consumption of wireless devices
    Patent number: 8571600
    Abstract: Described in example embodiments herein are techniques that combine at least two network (communication) technologies (such as protocols, signaling methods, etc.) and limit when a wireless device employs one of the technologies. In an example embodiment, a passive technology, such as a Radio Frequency Identification (RFID) technology, can be employed to determine whether a certain network technology is available.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: October 29, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Shantanu Sarkar, Roger Chi-yee Cheung, Morris J. Katz
  • Reducing power consumption of wireless devices
    Patent number: 8515411
    Abstract: Described in example embodiments herein are techniques that combine at least two network (communication) technologies (such as protocols, signaling methods, etc.) and limit when a wireless device employs one of the technologies. In an example embodiment, a passive technology, such as a Radio Frequency Identification (RFID) technology, can be employed to determine whether a certain network technology is available.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 20, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Shantanu Sarkar, Roger Chi-yee Cheung, Morris J. Katz
  • REDUCING POWER CONSUMPTION OF WIRELESS DEVICES
    Publication number: 20130023261
    Abstract: Described in example embodiments herein are techniques that combine at least two network (communication) technologies (such as protocols, signaling methods, etc.) and limit when a wireless device employs one of the technologies. In an example embodiment, a passive technology, such as a Radio Frequency Identification (RFID) technology, can be employed to determine whether a certain network technology is available.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 24, 2013
    Inventors: Shantanu SARKAR, Roger Chi-yee Cheung, Morris J. Katz
  • REDUCING POWER CONSUMPTION OF WIRELESS DEVICES
    Publication number: 20110212746
    Abstract: Described in example embodiments herein are techniques that combine at least two network (communication) technologies (such as protocols, signaling methods, etc.) and limit when a wireless device employs one of the technologies. In an example embodiment, a passive technology, such as a Radio Frequency Identification (RFID) technology, can be employed to determine whether a certain network technology is available.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Inventors: Shantanu SARKAR, Roger Chi-yee Cheung, Morris J. Katz