Chang Y Choo

This inventor holds 8 USPTO granted patents and 3 published patent applications. Top assignees: National Semiconductor Corporation, Altera Corporation, Electronics and Telecommunications Research Institute. Active years: 1996-2015.

USPTO Granted Patents = 8 (Patent Applications = 3)

% Patents Active = 75.0

Average Co-Inventor Count = 1.7

ph-index = 4

Forward Citations = 90(Granted Patents)

Company Filing History:

5 out of 4,791

National Semiconductor Corporation

Electronics and Telecommunications Research Institute

patents

Years Active: 1996-2015

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9025763 - Apparatus and method for cancelling wideband acoustic echo (2015-05-05),

2. 7124161 - Apparatus and method for implementing efficient arithmetic circuits in programmable logic devices (2006-10-17),

3. 7058675 - Apparatus and method for implementing efficient arithmetic circuits in programmable logic devices (2006-06-06),

4. 6621864 - Motion vector based frame insertion process for increasing the frame rate of moving images (2003-09-16),

5. 5991455 - Hashing-based vector quantization (1999-11-23),

6. 5943096 - Motion vector based frame insertion process for increasing the frame (1999-08-24),

7. 5832131 - Hashing-based vector quantization (1998-11-03),

8. 5587710 - Syntax based arithmetic coder and decoder (1996-12-24),

Title: Chang Y Choo: Innovator in Acoustic Echo Cancellation and Arithmetic Circuits

Introduction

Chang Y Choo is a prominent inventor based in San Jose, CA, known for his contributions to the fields of acoustic echo cancellation and efficient arithmetic circuits. With a total of 8 patents to his name, he has made significant advancements that have impacted various technological applications.

Latest Patents

One of his latest patents is an "Apparatus and method for cancelling wideband acoustic echo." This invention discloses a method that controls data flow transmitted and received using a central processing unit, while calculating data with a distinct calculation processing unit. Another notable patent is the "Apparatus and method for implementing efficient arithmetic circuits in programmable logic devices." This patent focuses on the efficient implementation of arithmetic circuits by utilizing Look-Up Tables (LUTs) to store pre-calculated values, thereby saving many logic elements at the expense of a few LUTs.

Career Highlights

Throughout his career, Chang Y Choo has worked with notable companies such as National Semiconductor Corporation and Altera Corporation. His work in these organizations has contributed to the development of innovative technologies that enhance performance in various applications.

Collaborations

Chang has collaborated with talented individuals in the field, including Xiaonong Ran and Asher Hazanchuk. These collaborations have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Chang Y Choo's contributions to the fields of acoustic echo cancellation and arithmetic circuits demonstrate his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving efficiency and performance in various applications.