Patents by Inventor Shun S. Chan

Shun S. Chan 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).

  • Multiple item radio frequency tag identification protocol
    Patent number: 5550547
    Abstract: The present invention uses a novel adaptation of a tree splitting algorithm applied to Radio Frequency (RF) tagging technology to identify many tags in the RF field of a base station.The invention uses the tree splitting algorithm to identify a single tag in a field of a plurality of radio frequency tags. Once the single tag is identified, the identified tag is placed in a Data.sub.-- Exchange state where the base station can access data from the tag memory by using information that identifies the tag.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: August 27, 1996
    Assignee: International Business Machines Corporation
    Inventors: Shun S. Chan, Harley K. Heinrich, Dilip D. Kandlur, Arvind Krishna