Chang-Ki Lee

Title: Chang-Ki Lee: Camera-Based Distance Measurement and Wireless Speaker Design.

Introduction

Chang-Ki Lee is an inventor based in Seoul, South Korea, whose patent work addresses camera-based distance measurement and antenna performance in wireless portable terminals. His listed portfolio includes 2 patents, and he is associated with Samsung Electronics Co., Ltd.

Latest Patents

Lee’s patent, “Method for Measuring Distance Using a Camera Module,” describes calculating the distance between a user and an object with an existing camera. The method uses zooming and focusing to determine optical measurements, including focal length and the distance between the lens and image device, then applies the lens equation to calculate and display the object’s distance. By relying on camera functions already available in the device, the approach can avoid the need for a separate distance-measuring component.

His patent, “Speaker Device for Improving Antenna Property in a Wireless Portable Terminal,” concerns a speaker module installed in a terminal’s earpiece. The design places an inductor at the speaker coil’s feeding portion to help prevent resonance at radio frequencies, with the aim of improving antenna performance.

Career Highlights

Lee’s listed inventions bring together optical measurement and wireless-device engineering. One applies camera-module functions to estimate distance, while the other addresses radio-frequency behavior in a compact speaker assembly.

Collaborations

Lee’s listed coworkers include Jin-Sun Woo and Kyeong-Jun Kim. His work is associated with Samsung Electronics Co., Ltd.

Conclusion

Chang-Ki Lee’s patents reflect practical approaches to integrating measurement and antenna-related functions into portable electronics.