Patents by Inventor Kyung Tek Lee

Kyung Tek Lee 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: 6594679
    Abstract: A leading-zero anticipator having an independent sign bit determination module is disclosed. An apparatus for anticipating leading zeros for an adder within a floating-point processor includes a leading-zero anticipator and a sign determination module. The leading-zero anticipator generates a leading zeros string and a leading ones string by examining carry propagates, generates, and kills of two adjacent bits of two input operands of the adder. The leading zeros string is intended for a positive sum, and the leading ones string is intended for a negative sum. Independent of the leading-zero anticipator, the sign determination module determines a sign of the output of the adder in concurrence with the operations within the leading-zero anticipator.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: July 15, 2003
    Assignee: International Business Machines Corporation
    Inventors: Kyung Tek Lee, Kevin John Nowka, Sang Hoo Dhong
  • Patent number: 6360238
    Abstract: A zero/one anticipator having an integrated sign selector is disclosed. A leading zeros string and a leading ones string are generated by examining carry propagates, generates, and kills of two adjacent bits of two input operands to an adder within a floating-point processor. The leading zeros string is for a positive sum, and the leading ones string is for a negative sum. A normalization shift amount is then determined from the leading zeros string and the leading ones string. A sign of a sum of the two input operands is then determined separately but concurrently with the normalization shift amount determination process. The sign is then utilized to select either the positive sum or the negative sum for a proper normalization shift amount.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: March 19, 2002
    Assignee: International Business Machines Corporation
    Inventors: Sang Hoo Dhong, Kyung Tek Lee, Hung Cai Ngo, Kevin John Nowka
  • Patent number: 6060759
    Abstract: The present invention relates, in general, to a method and apparatus for creating improved inductors which can be adapted for use with electronic oscillators. The method includes at least the following: forming a first coil; forming a second coil, such that the second coil is proximate to the first coil and such that a magnetic flux from the formed outer coil will link with a magnetic flux of the formed second coil; and connecting the first coil to the second coil in electrical parallel. The apparatus includes at least the following: a substrate; and a composite inductor having at least a first coil with an associated inductance and resistance and a second coil with an associated inductance and resistance, with the first coil and the second coil connected in electrical parallel but formed in the substrate such that said composite inductor has resistance substantially less than the combined resistances associated with the first coil and the second coil.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: May 9, 2000
    Assignee: International Business Machines Corporation
    Inventors: Sang Hoo Dhong, Uttam Shymalindu Ghoshal, Kyung Tek Lee