Patents by Inventor Joon-Lae Kim

Joon-Lae Kim 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: 6353603
    Abstract: An apparatus and method for providing a soft handoff between base stations using different operating frequencies. The apparatus includes a RAKE receiver having a plurality of main paths and an extra path, a first local oscillator for the main paths and a second local oscillator for the extra path. When the apparatus is located between two base stations using the different frequencies, both the first and second local oscillators are enabled and communication with the target base station is established using a demodulation signal output from the extra path. Thereafter, as the apparatus moves into coverage of a target base station, the oscillation frequency of the first local oscillator is adjusted for the frequency of the target base station. Upon stabilization of the first local oscillator, the extra path is disabled and communication with the target base station is established using modulation signals output from the main paths of the RAKE receiver.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: March 5, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joon-Lae Kim