Patents by Inventor Aihua E. Li

Aihua E. Li 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: 8223732
    Abstract: Apparatus and methods are provided for balancing a load across access devices in a wireless network. A method comprises receiving an association request at a first access device of a plurality of access devices, and determining, in response to the association request, if the first access device is the least-loaded access device among the plurality of access devices. The method further comprises granting the association request if the first access device is the least-loaded access device. If the first access device is not the least-loaded access device, the method may further comprise denying the association request.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: July 17, 2012
    Assignee: Symbol Technologies, Inc.
    Inventor: Aihua E. Li
  • Publication number: 20090318160
    Abstract: Apparatus and methods are provided for balancing a load across access devices in a wireless network. A method comprises receiving an association request at a first access device of a plurality of access devices, and determining, in response to the association request, if the first access device is the least-loaded access device among the plurality of access devices. The method further comprises granting the association request if the first access device is the least-loaded access device. If the first access device is not the least-loaded access device, the method may further comprise denying the association request.
    Type: Application
    Filed: June 18, 2008
    Publication date: December 24, 2009
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventor: Aihua E. LI
  • Patent number: 6604223
    Abstract: A system and method for correcting interference errors in data encoded on storage media comprising position marks disposed on a storage medium, the position marks being configured to encode a plurality of track addresses and at least four track types. A correction module detects and corrects errors in the track addresses by combining each of the track addresses with one of the track types and then recognizing incorrect addresses. The correction module replaces incorrect addresses with correct addresses using a look-up table, wherein each incorrect address is not identical to one of the correct addresses. The plurality of position marks that encode the track types are also used to generate a position error signal for position correction of a head device.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: August 5, 2003
    Assignee: Seagate Technology LLC
    Inventors: Karl A. Belser, Aihua E. Li
  • Patent number: 6570732
    Abstract: A method and apparatus for a settling check based on a single time point is described. A settling criterion for head oscillations in a disc drive is calculated using head position data. The settling criterion is used to determine when the head position data remains within a predetermined limit based on head position data values at a single point in time. The apparatus includes an actuator in a disc drive system including a head coupled to the actuator to generate a head position signal and a servo controller to receive the head position signal to determine when the head position signal remains within a threshold. The settling criterion could either be an elliptical settling criterion in one embodiment, or a triangular settling criterion in another embodiment.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: May 27, 2003
    Assignee: Seagate Technology LLC
    Inventor: Aihua E. Li