Tsan-Jieh Chen

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In this paper, an 8-channel closed-loop neural-prosthetic SoC is presented for real-time intracranial EEG (iEEG) acquisition, epileptic seizure detection, and adaptive feedback stimulation control. The SoC is composed of 8 energy-efficient analog front-end amplifiers (AFEAs), a 10b delta-modulated SAR ADC (DMSAR ADC), a configurable bio-signal processor(More)
As the number of iterations increases, the soft inputs and outputs of a turbo decoder gradually become more reliable. To take the effect into account, this paper presents an efficient adaptive scaling scheme for turbo decoding that extends the sign difference ratio (SDR) technique. Unlike the conventional approach using a fixed set of scaling factors, it(More)
Epilepsy is one of the most common neurological disorders. Around 1% of the world’s population is affected, and nearly 25% of the patients cannot be treated by available therapies. Recently, seizure-triggered feedback electrical stimulation has been proved to effectively suppress pathological brain activities [1], but devices with accurate detection and(More)
Independent component analysis (ICA) is a key signal processing technique to improve the detection accuracy of epileptic seizures. It separate artifacts and epileptic signals, which facilitates the succeeding signal processing for seizure detection. FastICA is an efficient algorithm to compute ICA through proper pre-processing. In the preprocessing stage of(More)
Ventilator-associated pneumonia (VAP) still lacks a rapid diagnostic strategy. This study proposes installing a nose-on-a-chip at the proximal end of an expiratory circuit of a ventilator to monitor and to detect metabolite of pneumonia in the early stage. The nose-on-a-chip was designed and fabricated in a 90-nm 1P9M CMOS technology in order to downsize(More)
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