Ji-Yong Um

15 papers Journal 9Unranked 6
YearRankTypeTitle / Venue / Authors
2026 J jnl
Ultrasound Scanner ASIC With 1-D CNN-Based Echo Pattern Recognition for Arterial Distension Monitoring.
IEEE Trans. Biomed. Circuits Syst.
Doo-Hyeon Ko, Min-Hyeong Son, Dae-Il Kim, Ji-Yong Um
2025 J jnl
Design and HDL Implementation of Pulse-Arrival-Time Estimation Using XGBoost Regression With Tree-Recycling Architecture.
IEEE Access
Hyo-Jeong Choi, Ji-Yong Um
2024 J jnl
Arterial Distension Monitoring Scheme Using FPGA-Based Inference Machine in Ultrasound Scanner Circuit System.
IEEE Trans. Biomed. Circuits Syst.
Young-Chan Lee, Doo-Hyeon Ko, Min-Hyeong Son, Se-Hwan Yang, Ji-Yong Um
2023 J jnl
Center Frequency Tracking Scheme to Optimize Pulse-Echo Response of Ultrasonic A-mode Scanner Circuit System.
IEEE Access
Doo-Hyeon Ko, Young-Chan Lee, Ji-Yong Um
2023 — conf
Design and implementation of autonomous collaboration service between IoT using distributed platform.
ICUFN
Chang-Su Lee, Ji-Yong Um, Mi-Hyang Jeon
2022 J jnl
A Compact Variable Gain Amplifier With Continuous Time-Gain Compensation Using Systematic Predistorted Gain Control.
IEEE Trans. Circuits Syst. II Express Briefs
Ji-Yong Um
2022 — conf
A Programmable Gain Amplifier with Fast Transient Response for Medical Ultrasound System.
ISOCC
Min-Hyeong Son, Young-Chan Lee, Hyun-Min Baek, Hyo-Jeong Choi, Ji-Yong Um
2017 J jnl
A Single-Chip 64-Channel Ultrasound RX-Beamformer Including Analog Front-End and an LUT for Non-Uniform ADC-Sample-Clock Generation.
IEEE Trans. Biomed. Circuits Syst.
Yoon-Jee Kim, Sung-Eun Cho, Ji-Yong Um, Min-Kyun Chae, Jihoon Bang, Jongkeun Song, Taeho Jeon, Byungsub Kim, Jae-Yoon Sim, Hong-June Park
2015 J jnl
A Single-Chip 32-Channel Analog Beamformer With 4-ns Delay Resolution and 768-ns Maximum Delay Range for Ultrasound Medical Imaging With a Linear Array Transducer.
IEEE Trans. Biomed. Circuits Syst.
Ji-Yong Um, Yoon-Jee Kim, Seong-Eun Cho, Min-Kyun Chae, Byungsub Kim, Jae-Yoon Sim, Hong-June Park
2015 — conf
Power noise rejection and device noise analysis at the reference level of ramp ADC.
IMSE
Peter Ahn, Ji-Yong Um, EunJung Choi, Hyunmook Park, Jaseung Gou, Kwangjun Cho, Kangbong Seo, Sangdong Yoo
2014 — conf
24.8 An analog-digital-hybrid single-chip RX beamformer with non-uniform sampling for 2D-CMUT ultrasound imaging to achieve wide dynamic range of delay and small chip area.
ISSCC
Ji-Yong Um, Eun-Woo Song, Yoon-Jee Kim, Seong-Eun Cho, Min-Kyun Chae, Jongkeun Song, Bae-Hyung Kim, Seunghun Lee, Jihoon Bang, Youngil Kim, Kyungil Cho, Byungsub Kim, Jae-Yoon Sim, Hong-June Park
2014 J jnl
An Analog-Digital Hybrid RX Beamformer Chip With Non-Uniform Sampling for Ultrasound Medical Imaging With 2D CMUT Array.
IEEE Trans. Biomed. Circuits Syst.
Ji-Yong Um, Yoon-Jee Kim, Seong-Eun Cho, Min-Kyun Chae, Jongkeun Song, Bae-Hyung Kim, Seung-Hun Lee, Jihoon Bang, Youngil Kim, Kyungil Cho, Byungsub Kim, Jae-Yoon Sim, Hong-June Park
2013 J jnl
A Digital-Domain Calibration of Split-Capacitor DAC for a Differential SAR ADC Without Additional Analog Circuits.
IEEE Trans. Circuits Syst. I Regul. Pap.
Ji-Yong Um, Yoon-Jee Kim, Eun-Woo Song, Jae-Yoon Sim, Hong-June Park
2011 — conf
Digital-domain calibration of split-capacitor DAC with no extra calibration DAC for a differential-type SAR ADC.
A-SSCC
Ji-Yong Um, Jae-Hwan Kim, Jae-Yoon Sim, Hong-June Park
2011 — conf
Time-interleaved sample clock generator for ultrasound beamformer application.
ISOCC
Jae-Hwan Kim, Ji-Yong Um, Jae-Yoon Sim, Hong-June Park