Patents by Inventor Gallen Ka Leung Tsui

Gallen Ka Leung Tsui 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).

  • Systems and methods for proximity control of a barrier
    Patent number: 7205908
    Abstract: A system and method for proximity control of a barrier comprises a stationary wireless signal receiving device and a mobile transmitting device. The wireless signal receiving device may monitor at least one transmitting device within a predetermined coverage area and may be a radio frequency receiver or a spread spectrum receiver located near the barrier. In one embodiment, the transmitter device emits a control signal that is received by the receiving device when the transmitter is within a reception range. In one embodiment, the control signal includes transmitter identification information, directional information and position information. In another embodiment, the barrier is closed only after a predetermined delay has lapsed.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: April 17, 2007
    Inventors: Gallen Ka Leung Tsui, Philip Y. W. Tsui
  • Systems and methods for proximity control of a barrier
    Patent number: 7170426
    Abstract: A system and method for proximity control of a barrier comprises a stationary wireless signal receiving device and a mobile transmitting device. The wireless signal receiving device may monitor at least one transmitting device within a predetermined coverage area and may be a radio frequency receiver or a spread spectrum receiver located near the barrier. In one embodiment, the transmitter device emits a control signal that is received by the receiving device when the transmitter is within a reception range. In one embodiment, the control signal includes transmitter identification information, directional information and position information. In another embodiment, the barrier is closed only after a predetermined delay has lapsed.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: January 30, 2007
    Inventors: Gallen Ka Leung Tsui, Philip Y. W. Tsui
  • Systems and methods for operating a barrier
    Patent number: 7170248
    Abstract: Disclosed are systems and methods for operating a barrier. In one embodiment, a door operator can be opened or closed by triggering either an internal device (e.g., wall button) or an external device. In one embodiment, if an obstacle is detected when the door is opening or closing, the door will either stop or swing in the reverse direction. In yet a further embodiment, the door operator is implemented using an alternating current (AC) synchronous motor.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: January 30, 2007
    Inventors: Gallen Ka Leung Tsui, Philip Y. W. Tsui
  • Systems and methods for proximity control of a barrier
    Patent number: 7088265
    Abstract: A system and method for proximity control of a barrier comprise a stationary wireless signal receiving device and a mobile transmitting device. The wireless signal receiving device may monitor at least one transmitting device within a predetermined coverage area and may be a radio frequency receiver or a spread spectrum receiver located near the barrier. In one embodiment, the transmitter device emits a control signal that is received by the receiving device when the transmitter is within a reception range. In one embodiment, the control signal includes transmitter identification information, directional information and position information.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: August 8, 2006
    Inventors: Gallen Ka Leung Tsui, Philip Y. W. Tsui
  • Garage door monitoring system
    Patent number: 6597291
    Abstract: A system and method for monitoring a garage door position from a remote location. A local sensor detects the position of a garage door and provides this information to a local transmitter. The transmitter is capable of generating a signal indicating the garage door position, where the signal can be detected by a remote receiver. In one embodiment, infrared sensors are used to detect the garage door position, while in another embodiment trigger switches detect the direction in which the garage door is moving.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: July 22, 2003
    Inventor: Gallen Ka Leung Tsui
  • Garage door monitoring system
    Publication number: 20030076235
    Abstract: A system and method for monitoring a garage door position from a remote location. A local sensor detects the position of a garage door and provides this information to a local transmitter. The transmitter is capable of generating a signal indicating the garage door position, where the signal can be detected by a remote receiver. In one embodiment, infrared sensors are used to detect the garage door position, while in another embodiment trigger switches detect the direction in which the garage door is moving.
    Type: Application
    Filed: December 6, 2002
    Publication date: April 24, 2003
    Inventor: Gallen Ka Leung Tsui
  • GARAGE DOOR MONITORING SYSTEM
    Publication number: 20030067394
    Abstract: A system and method for monitoring a garage door position from a remote location. A local sensor detects the position of a garage door and provides this information to a local transmitter. The transmitter is capable of generating a signal indicating the garage door position, where the signal can be detected by a remote receiver. In one embodiment, infrared sensors are used to detect the garage door position, while in another embodiment trigger switches detect the direction in which the garage door is moving.
    Type: Application
    Filed: October 10, 2001
    Publication date: April 10, 2003
    Inventor: Gallen Ka Leung Tsui