https://scholar.dgist.ac.kr/handle/20.500.11750/10178 Sun, 05 Apr 2026 15:09:07 GMT 2026-04-05T15:09:07Z https://scholar.dgist.ac.kr/handle/20.500.11750/59016 Title: An Implantable Neural Recording IC with In-Situ Spike Detection and Preservation Author(s): Kim, Seong-Jin; Liu, Lei; Yao, Lei; Gao, Yuan; Je, Min Kyu Abstract: We present an implantable neural recording IC with a unique scheme for detecting spike signals and preserving their waveform in real-time. Each channel in the proposed device has a delta modulator that stores a series of consecutive subtracted signal values. The delta modulation doesn't only allow low-voltage operation by reducing the signal dynamic range, but also detects only the spike signal by extracting its two key features, frequency and amplitude, in analog domain. The full waveform of the detected spike signal is accurately conserved and transmitted to outside. A prototype recording IC with 16 channels has been fabricated using 1P6M 0.18-mu m CMOS and demonstrates to record the spike signal successfully. It only consumes 0.88 mu W/channel at 0.5 V supply and its spike detection technique can save much more power in the overall system by compressing the neural signal to be transferred. Sun, 01 Nov 2015 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/59016 2015-11-01T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/47625 Title: A scheme improving fast PMIPv6-based network mobility by eliminating tunneling overload for ITS Author(s): Ryu, Seonggeun; Choi, Ji-Woong; Park, Kyung-Joon Abstract: NEtwork MObility Basic Support (NEMO BS) protocol has been investigated to provide Internet connectivity of a group of nodes, which is suitable for Intelligent Transportation Systems (ITS) applications. Since NEMO BS is based on Mobile IPv6 (MIPv6), it often increases traffic load and handover latency due to the handover procedure. Thus, schemes combining Proxy MIPv6 (PMIPv6) with NEMO (P-NEMO) have emerged to solve these problems. However, they still suffer from packet loss and long handover latency during the handover. To prevent packet loss and reduce the handover latency, Fast P-NEMO (FP-NEMO) has emerged. Although FP-NEMO accelerates the handover procedure through tunneling, it may cause a serious burden of the tunnel between Mobile Access Gateways (MAGs). This is because all packets destined for Mobile Network Nodes (MNNs) are forwarded to a New MAG (NMAG) through the tunnel between MAGs. This problem becomes more critical, as the number of MNNs is large and there exists heavy traffic between MAGs. Therefore, we propose a scheme Improving FP-NEMO (IFP-NEMO) to eliminate that tunneling burden. IFP-NEMO performs the registration prior to the layer 2 handover. When the registration is completed, packets are forwarded to the NMAG directly, so that the tunnel between MAGs is not used during the handover. IFP-NEMO is analyzed and compared with FP-NEMO through performance evaluations. We show that IFP-NEMO outperforms FP-NEMO in numerical results. Mon, 04 Jun 2012 15:00:00 GMT https://scholar.dgist.ac.kr/handle/20.500.11750/47625 2012-06-04T15:00:00Z