Company Filing History:

18 out of 20,290

Motorola Corporation

patents

3 out of 5,491

Freescale Semiconductor,inc.

patents

1 out of 37

General Dynamics Decision Systems, Inc.

patents

Years Active: 1992-2006

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22 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7142665 - Automatic gain control for an adaptive finite impulse response and method therefore (2006-11-28),

2. 7065207 - Controlling attenuation during echo suppression (2006-06-20),

3. 6928409 - Speech recognition using polynomial expansion and hidden markov models (2005-08-09),

4. 6799062 - Full-duplex hands-free transparency circuit and method therefor (2004-09-28),

5. 6707912 - Method and apparatus for setting a step size for an adaptive filter coefficient of an echo canceller (2004-03-16),

6. 6658112 - Voice decoder and method for detecting channel errors using spectral energy evolution (2003-12-02),

7. 6415029 - Echo canceler and double-talk detector for use in a communications unit (2002-07-02),

8. 6104726 - Simultaneous transfer of voice and data information using multi-rate (2000-08-15),

9. 6084967 - Radio telecommunication device and method of authenticating a user with (2000-07-04),

10. 5926756 - Method and system for programming a cellular phone (1999-07-20),

11. 5896452 - Multi-channel echo canceler and method using convolution of two training (1999-04-20),

12. 5856970 - Multi-channel echo cancellation method and apparatus (1999-01-05),

13. 5815020 - Balance differential receiver (1998-09-29),

14. 5812942 - Balanced differential radio receiver and method of operation (1998-09-22),

15. 5751718 - Simultaneous transfer of voice and data information using multi-rate (1998-05-12),

Title: Innovations of William Chunhung Yip: A Pioneer in Echo Cancellation Technology

Introduction

William Chunhung Yip, based in Scottsdale, AZ, is an accomplished inventor known for his significant contributions to the field of echo cancellation technology. With an impressive portfolio of 22 patents, Yip has made remarkable strides in enhancing audio signal processing, particularly in environments where audio clarity is critical.

Latest Patents

Among his latest innovations is the patent titled "Automatic Gain Control for an Adaptive Finite Impulse Response and Method Therefore". This invention involves methods and apparatus for an echo cancellation system that integrates an automatic gain control (AGC), scalars, a signal summing stage, and an adaptive filter. The AGC responds to signals from both a reference path and a near-end path, ensuring precise echo signal management. Another noteworthy patent, "Controlling Attenuation During Echo Suppression", addresses audio signal transmission and reception between far- and near-end locations. It effectively manages echo and attenuation during single and double talk scenarios, using ERLE to optimize performance.

Career Highlights

William Chunhung Yip has had a distinguished career, having worked with renowned companies such as Motorola Corporation and Freescale Semiconductor. His work has greatly influenced advancements in audio technology, providing solutions that significantly improve communication clarity in various applications.

Collaborations

Throughout his career, Yip has collaborated with several esteemed professionals, including David L. Barron and James Brian Piket. These partnerships have contributed to the development and enhancement of innovative technologies in his field.

Conclusion

William Chunhung Yip continues to be a driving force in the realm of inventions related to echo cancellation and audio signal processing. His 22 patents reflect a dedication to innovation and excellence, offering solutions that are integral to modern communication technologies. Yip's work not only showcases his talent but also highlights the importance of proactive inventions in improving everyday sound experiences.

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