15 issued US patents

The record

Every issued US patent, with its number and date, plus the career it came out of. Pending applications are not listed. Each number here is a granted patent and can be checked against the public record.

Patent Issued Title Assignee
US 5,771,338 1998-06-23 Error diffusion architecture with simultaneous print and store data paths for converting a scanned image into multiple copies of a printed image Hewlett-Packard
US 5,848,224 1998-12-08 Optimally pipelined error diffusion architecture for converting scanned image into four-color printed image Hewlett-Packard
US 6,381,371 2002-04-30 Method and apparatus for processing image files Hewlett-Packard
US 6,741,746 2004-05-25 Method and apparatus for processing image files HP Development Company
US 7,079,657 2006-07-18 System and method of performing digital multi-channel audio signal decoding Broadcom
US 7,409,339 2008-08-05 Methods and systems for sample rate conversion Broadcom
US 7,457,420 2008-11-25 Method and system for detecting signal modes in a broadcast audio transmission Broadcom
US 7,489,362 2009-02-10 Television functionality on a chip Broadcom
US 7,558,549 2009-07-07 Method and system for rejecting single-sided leakage into an amplitude modulated (AM) channel Broadcom
US 7,912,153 2011-03-22 System and method of performing digital multi-channel audio signal decoding Broadcom
US 7,961,255 2011-06-14 Television functionality on a chip Broadcom
US 8,005,667 2011-08-23 Methods and systems for sample rate conversion Broadcom
US 8,854,545 2014-10-07 Television functionality on a chip Broadcom
US 9,959,242 2018-05-01 Keys and sensors for daily consumer activities Hoang Nhu
US 9,980,082 2018-05-22 System and method for tracking locations and activities KoolTechs Inc

Career

  1. 2025 to present

    UC Irvine, Samueli School of Engineering

    Dean's Leadership Council

  2. 2013 to present

    NousLogic Telehealth Inc.

    Founder and Chief Executive Officer

    Irvine, California

  3. 2013 to 2024

    DeviceLab Inc.

    Chief System Architect

    Tustin, California

  4. 2000 to 2013

    Broadcom

    SoC ASIC Chip Team Lead

    Irvine, California

  5. 1994 to 2000

    Hewlett-Packard, Home Imaging Division

    SoC ASIC Chip Lead

    Rancho Bernardo, California

  6. 1992 to 1994

    Applied Signal Technology

    System Engineer

    Sunnyvale, California

  7. 1984 to 1992

    Hewlett-Packard, Instruments Division

    R&D Engineer

    Lake Stevens, Washington

Education

  • Undergraduate Bachelor of Science in Electrical Engineering, California Polytechnic University, Pomona. Summa Cum Laude.
  • Graduate Master of Science in Electrical Engineering, University of Washington. Hewlett-Packard Fellowship Award.

Honors and recognition

  • Winner, Silicon Labs 2015 IoT Contest Silicon Labs and DigiKey . August 2015 . the KoolTechs IoT platform
  • Startup of the Year, Smart City category StartupCity
  • Selected into the inaugural connected health accelerator cohorts LG in Silicon Valley and Upward Labs in Hartford, Connecticut
  • Dean's Leadership Council Samueli School of Engineering . November 2025