Research

Intelligent Mobile SoC 

Research Highlights

ECC optimizations for storages 

Y. Lee, H. Yoo, I. Yoo, and I.-C. Park, “6.4Gb/s multi-threaded BCH encoder and decoder for multi-channel SSD controllers,” IEEE International Solid-State Circuits Conference (ISSCC), Feb. 2012, pp. 426-427.

  • The firstly reported over 6Gbps encoding and decoding architecture.
  • 32b/1KB correctable BCH ECC solution for mobile storages.
  • Low-complexity HW optimization algorithms for massive parallel BCH decoders.
  • Multi-threaded ONFI control processor for multi-channel NAND flash memories.
 Block-concatenated parallel BCH decoder 

Y. Lee, H. Yoo, J. Jung, J. Jo, and I.-C. Park, “A 2.74-pJ/bit, 17.7-Gb/s iterative concatenated-BCH decoder in 65-nm CMOS for NAND flash memory,” IEEE Journal of Solid-State Circuits, vol. 48, no. 10, pp. 2531-2540, Oct. 2013.

  • The state-of-the-art hard-decision ECC solution for storages.
  • Attractive ECC performance with iterative decoding scheme.
  • Energy-efficient two-dimensional syndrome updating algorithm.


Core-A 2G embedded processor

J. Song, Y. Lee, B. Kim, and I.-C. Park, "8-pipeline-stage 32-bit embedded processor using dual clock domain," IEEE International SoC Design Conference (ISOCC) CDC, 2011. (Best Design Award)

  • 1GHz 8-stage pipelined embedded processor.
  • Programmable delay slots for compact program size.
  • Energy-efficient clock gating schemes.


Area-efficient search tree for the first two minima

Y. Lee, B. Kim, J. Jung, and I.-C. Park, “Low-complexity tree architecture for finding the first two minima,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 62, no. 1, pp. 61-64, Jan. 2015.

  • Low-complexity hierarchical search tree architecture.
  • Using the minimum number of comparison operations.


CSE sharing for cost-effective matrix operations

Y. Lee, H. Yoo, and I.-C. Park, “Low-complexity parallel Chien search structure using two-dimensional optimization,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 58, no. 8, pp. 522-526, Aug. 2011.

  • Matrix reformulating for maximizing the search area.
  • Fan-out-limiting XOR-sharing algorithm.

 

On-going Funded Projects
  • [2017/09~2019/08] 초저전력 지능형 모바일 시스템을 위한 자율 정확도 스케일링 (삼성전자 미래기술육성사업)
  • [2016/06~2019/05] 차세대 모바일 스토리지를 위한 초저전력 오류정정 시스템 (미래창조과학부 신진연구지원사업)
 
Previous Funded Projects
  • [2015/07~2016/06] Development of near-threshold VLSI platform for ultra-low-power applications (정보통신기술진흥센터 IT명품인재양성사업)
  • [2015/08~2016/05] Core-A on-chip debugger 검증 및 개선 (다이나릿시스템 장기자문)
  • [2016/01~2016/05] LFSR 병렬처리를 활용한 텔레그램 디코딩 연산 속도 개선 연구 (한국철도기술연구원 장기자문)
 
Research Awards

제 24회 한국반도체학술대회 (2017)

  • System LSI Design Session Award
    • Area-efficient SC FFT with CORDIC-based approximations
    • 황석하, 이영주
  • Best Poster Award
    • 실시간 차선 검출을 위한 카메라 왜곡 보정의 최적화
    • 안중근, 이영주


Altera Design Contest (2016)

  • Excellence Award
    • Low-complexity curvature-lane recognition hardware for advanced driver assistance systems
    • 박윤호, 안중근, 권종혁, 김재관, 금규대, 이영주


IEEE ISOCC (2016)

  • Samsung Electronics Award
    • Sharpness-aware real-time haze removal for advanced driver assistance systems
    • Joonggeun Ahn, Jihoon Kim, and Youngjoo Lee


Altera Design Contest (2015)

  • Excellence Award
    • 개선된 차선인식 알고리즘을 이용한 차선 이탈 경고 시스템
    • 김진수, 장익환, 나상현, 박상현, 이영주


IEEE ISOCC (2013)

  • Best Demo Award
    • Energy-efficient high-throughput iterative concatenated-BCH decoder for MLC flash memory
    • Youngjoo Lee, Hoyoung Yoo, Jaehwan Jung, Jihyuck Jo, and In-Cheol Park


Qualcomm Korea Innovation Contest (2013)

  • Innovation Award
    • Energy-scalable low-complexity 4KB LDPC decoding architecture for solid-state drives
    • Youngjoo Lee and In-Cheol Park


IEEE ISOCC (2011)

  • Best Design Award
    • 8-pipeline-stage 32-bit embedded processor using dual clock domain
    • Jinook Song, Youngjoo Lee, Bongjin Kim, and In-Cheol Park


제 12회 대한민국 반도체 설계대전 (2011)

  • Special Award
    • 오류에 강인한 다채널 대용량 MLC SSD 컨트롤러의 설계
    • 이영주, 유호영, 유인재


제 9회 대한민국 반도체 설계대전 (2008)

  • Bronze Medal
    • Scalable sound synthesis system
    • 김태환, 이영주