Seong-Ik Cho

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Methods to Detect Road Features for Video-Based InVehicle Navigation Systems Kyoung-Ho Choi a , Soon-Young Park a , Seong-Hoon Kim b , Ki-Sung Lee c , Jeong-Ho Park d , Seong-Ik Cho d & Jong-Hyun Park d a Mokpo National University , Mokpo, Korea b Eyenix Co., Ltd. , Suwon, Korea c Korea University, College of Health Science , Seoul, Korea d Electronics(More)
This paper proposes a new bandgap reference (BGR) circuit which adopts a cascode current mirror biasing for reducing the reference voltage variation and a novel sizing method for reducing the PNP BJT area. The proposed BGR was designed and fabricated using 0.18 lm triple-well CMOS process which provides only normal VTH transistors. The reference voltage(More)
This paper proposes an architecture of 3 rd order SDM(Sigma-Delta Modulator) with delayed feedforward path in order to reduce power consumption and area. The proposed SDM improve the architecture of conventional 3 rd order SDM which consists of two integrators. In the proposed architecture, the coefficient values of the first stage are doubled by inserting(More)
This paper presents the design of a clock and data recovery circuit (CDR) without a reference clock. It has a phase and frequency detector (PD and FD), which incorporates a half-rate bang-bang type oversampling PD and a half-rate digital quadricorrelator frequency detector (DQFD) that can achieve low-jitter operation and improve pull-in range. It also has a(More)
Old mobile devices were less powerful and did not support various functions. Therefore complex data visualization with different structure was impossible with old devices. Recent mobile are more powerful having high resolution, more colors, large screen, fast connectivity, various tools than old one, but still visualization on mobile devices has remained a(More)
A DLL(Delay Locked Loop) with DCC(Duty Cycle Correction) has become an essential block in high speed memory and digital circuits. An SMD(Synchronous Mirror Delay) structure is widely used both for skew reduction and for DCC. In this paper, an area-efficient DLL structure based on the merged dual SMD is proposed. The merged structure allows the forward delay(More)
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