Patents by Inventor David Caesar

David Caesar 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: 7557770
    Abstract: Method and apparatus for selectively connecting one of an internal and an external antenna to an RF signal component of a wireless modem use a sensor mounted on the circuit board of the wireless modem. The sensor senses the presence of a connector of the external antenna, and issues a corresponding sensor output signal to a controller that controls a switch in order to alternatively connect one of the internal and external antennas to the RF signal component.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: July 7, 2009
    Assignee: Sierra Wireless, Inc.
    Inventor: David Caesar
  • Patent number: 7397781
    Abstract: A solution is provided wherein the mobile device selects a multislot class based on the profile of the traffic to be utilized by the mobile device. This may be performed manually by a user, or may be performed automatically where an application or driver software automatically and dynamically determines the best multislot class for the applications being used. This can be accomplished, for example, by looking at the classification of the transport control protocol (TCP) port numbers used, by examining the data sent and received by the network, and/or looking up a profile for the user or device. If the user changes applications or some other event occurs on the mobile device that might cause a change in the profile of the traffic, the mobile device may terminate its current multislot class assignment and re-announce itself, allowing the system to transfer the mobile device to a new multislot class.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: July 8, 2008
    Assignee: Sierra Wireless, Inc.
    Inventors: Steven Lawrence Gielty, David Caesar, Riley Steven Hoyt
  • Patent number: 7345636
    Abstract: An apparatus and method for providing a broadband antenna is disclosed. For one embodiment of the invention, a molded antenna structure is provided having a gap between electrical components on the printed circuit assembly (PCA) and an overmolding of the antenna structure. One embodiment of the invention substantially reduces the degradation of the antenna performance in wideband modes of operation compared with prior art overmolding schemes. For one embodiment of the invention, the gap between the electrical components and the overmolding is formed by implementing a “cap” (covering) over the components on the PCA such that they are substantially surrounded by air between the cap and the PCA surface.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: March 18, 2008
    Assignee: Sierra Wireless, Inc.
    Inventors: Behrouz Pourseyed, Dan Florescu, David Caesar
  • Publication number: 20080036681
    Abstract: Method and apparatus for selectively connecting one of an internal and an external antenna to an RF signal component of a wireless modem use a sensor mounted on the circuit board of the wireless modem. The sensor senses the presence of a connector of the external antenna, and issues a corresponding sensor output signal to a controller that controls a switch in order to alternatively connect one of the internal and external antennas to the RF signal component.
    Type: Application
    Filed: October 4, 2007
    Publication date: February 14, 2008
    Applicant: Sierra Wireless, Inc.
    Inventor: David Caesar
  • Patent number: 7295171
    Abstract: Method and apparatus for selectively connecting one of an internal and an external antenna to an RF signal component of a wireless modem use a sensor mounted on the circuit board of the wireless modem. The sensor senses the presence of a connector of the external antenna, and issues a corresponding sensor output signal to a controller that controls a switch in order to alternatively connect one of the internal and external antennas to the RF signal component.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: November 13, 2007
    Assignee: Sierra Wireless, Inc.
    Inventor: David Caesar
  • Publication number: 20070085748
    Abstract: Method and apparatus for selectively connecting one of an internal and an external antenna to an RF signal component of a wireless modem use a sensor mounted on the circuit board of the wireless modem. The sensor senses the presence of a connector of the external antenna, and issues a corresponding sensor output signal to a controller that controls a switch in order to alternatively connect one of the internal and external antennas to the RF signal component.
    Type: Application
    Filed: October 17, 2005
    Publication date: April 19, 2007
    Inventor: David Caesar
  • Publication number: 20060256032
    Abstract: An apparatus and method for providing a broadband antenna is disclosed. For one embodiment of the invention, a molded antenna structure is provided having a gap between electrical components on the printed circuit assembly (PCA) and an overmolding of the antenna structure. One embodiment of the invention substantially reduces the degradation of the antenna performance in wideband modes of operation compared with prior art overmolding schemes. For one embodiment of the invention, the gap between the electrical components and the overmolding is formed by implementing a “cap” (covering) over the components on the PCA such that they are substantially surrounded by air between the cap and the PCA surface.
    Type: Application
    Filed: April 12, 2006
    Publication date: November 16, 2006
    Inventors: Behrouz Pourseyed, Dan Florescu, David Caesar