U.S. PATENTS

Patent Number: 5,911,082
Date of Patent: June 8, 1999
Inventors: Jean Monroe; Dion Messer
Title: “PARALLEL PROCESSING BUILDING BLOCK CHIP"

Patent Number: 5,410,595
Date of Patent: April 25, 1995
Inventors: Sangil Park; Dion Messer
Title: “APPARATUS AND METHOD FOR NOISE REDUCTION FOR
A FULL-DUPLEX SPEAKERPHONE OR THE LIKE”

Patent Number: 5,392,348
Date of Patent: February 21, 1995
Inventors: Sangil Park; Dion Messer
Title: “DTMF DETECTION HAVING SAMPLE RATE DECIMATION
AND ADAPTIVE TONE DETECTION”

Patent Number: 5,387,913
Date of Patent: February 7, 1994
Inventors: Sangil Park; Dion D. Messer
Title: “RECEIVER WITH DIGITAL TUNING AND METHOD
THEREFOR”

Patent Number: 5,309,484
Date of Patent: May 3, 1994
Inventors: Peter J. McLane; Sangil Park; Dion Messer
Title: “METHOD AND APPARATUS FOR ASYNCHRONOUS
TIMING RECOVERY USING INTERPOLATION
FILTER”

Patent Number: 5,291,525
Date of Patent: March 1, 1994
Inventors: Dion Messer; Sangil Park; Peter J. McLane
Title: “SYMMETRICALLY BALANCED PHASE AND AMPLITUDE
BASE BAND PROCESSOR FOR A QUADRATIC
RECEIVER”

Patent Number: 5,249,204
Date of Patent: September 28, 1993
Inventors: Dion Messer; Sangil Park; Garth D. Hillman
Title: “CIRCUIT AND METHOD FOR PHASE ERROR
CORRECTION IN A DIGITAL RECEIVER”

Patent Number: 5,113,189
Date of Patent: May 12, 1992
Inventors: Dion D. Messer; Sangil Park; Charles D. Thompson
Title: “FREQUENCY TRANSLATING COHERENT ANALOG TO
DIGITAL CONVERSION SYSTEM FOR MODULATED
SIGNAL”