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This paper introduces the Service Personalized Bundling service System (SPBS) which minimizes interferences between the individual services, meets the service conditions and the habits and preferences of individual subscribers, and intelligently controls the mutual relationship between the services. By integrating Calendar service, VoIP service, IM (Instant Messaging) services and streaming services,...
Interactive voice response (IVR) is an automated telephony that interacts with callers by means of voice and touch tones, gathers information, provides responses in the form of voice, and routes calls to the appropriate recipient. Due to automated attendant, 24-hour operation, etc, IVR systems have been widely used in the field of telebanking, order, reservation, telemarketing, adult entertainment,...
This paper presents a low-power coherent receiver for UWB pulsed radar for motion detection. Due to accuracy of the radar motion detection, coherent detection scheme is adopted in the receiver. To relax the stringent requirement of timing synchronization, sliding correlation detection is proposed. The clocking step which determines detection resolution is determined by 2 ns which is half of a pulse...
In future mobile systems, various access networks will be used and the usability of a mobile node (MN) with the access networks will be higher. When a MN is connected to several access networks simultaneously, it may hand over from one access network to the other according to the connectivity to the access network. In order to keep communications even during handover, the mobility of MNs and the continuous...
Backlight unit (BLU) is one of essential components constituting liquid crystal display (LCD). It can be fabricated with several different methods. Cold cathode fluorescent lamp (CCFL) can be made with a low cost process and has high quality of color reproducibility. But it cannot provide a high quality of brightness & contrast and can raise environmental issue since Hg is used as a law material...
In this study, the package named Bumpless Ball Grid Array (BBGA) was developed. In BBGA package, chips were buried in the cavities made with solder resist materials. For BBGA package development, epoxy based photo-patternable solder resist was used as an encapsulation material because of cost effectiveness and process simplicity. This solder resist film was laminated on the Cu plate and cavities were...
In this paper, we propose an adaptive sub-band exclusion (ASE) scheme as a means of intercell interference coordination (ICIC) technique to improve the performance of wireless cellular systems in a decentralized manner. Since ICIC is performed at each mobile station (MS), the proposed ASE scheme can be classified as a decentralized ICIC scheme. Compared to conventional centralized ICIC schemes, our...
We demonstrate that the nonlinear optical performance of periodically poled crystals can be exactly predicted by observing the far-field diffraction pattern. The diffraction pattern is shown to be equivalent to the second-harmonic generation tuning curve.
The tactile effects of a sound-specific vibration interface is presented in this paper. The sound-specific vibration interface generates a vibration according to a sound stream using 16 oscillators arranged in 4 times 4 array. By setting time frame, we were able to generate various patterns of vibrations. So, the main purpose of this paper is to analyze the effectiveness the sound- specific vibration...
In this paper, we present the tactile effects of a sound-specific vibration interface. The sound-specific vibration interface generates vibration patterns with varying frequencies of sound by activating 16 oscillators in a 4times4 array within a set time frame. The main purpose of this paper is to analyze the effectiveness of this vibration interface depending on the position of the body to which...
Gate-all-around (GAA) MOSFET with single silicon nanowire is fabricated and applied to SONOS memory as a cell transistor for NAND flash string. Driving current over 1 uA, which is sufficient to NAND string, is obtained with single nanowire of ~7 nm width. Using FN tunneling conditions, VTH window of 4.5 V and fast program/erase (P/E) speed of ~10 us are obtained, respectively. The smaller nanowire...
Mobile and wireless technologies have evolved rapidly in recent years, especially the development of hardware devices, such as PDA and Smartphone. Telecommunication service providers, manufacturers and other developers have launched different kinds of services and applications in these mobile devices. Mobile Geographic Information and Location Based Service appear recently to help people to establish...
This paper discusses the design and implementation of a geocomputing platform for the development of location-based services(LBS) focusing mobile mapping. During the analysis, design, and implementation of the geocomputing platform, an effective method was identified for the real-time processing of geographic information acquired by a camera attached to a PDA. This combines location information given...
In this paper, we present a geometrical compensation method for a calibrated multi-view video that is captured by the one-dimensional (1-D) parallel or arc camera array. Since the multi-view video may include geometical errors, we define a compensating transformation based on a two-dimensional (2-D) homography. After we apply the compensating transformation, we obtain all the image planes which are...
A flexible monopole antenna for UWB systems is proposed. The proposed antenna has good performance over the entire UWB bandwidth, and it enhanced the impedance bandwidth by using the stepped CPW feed line. It can be easily mounted on conformal shape, because it is fabricated on PET film having the flexible characteristic. It has a band-notch function of 5 GHz WLAN band using two slits. From the results,...
Steganography is a technique to hide secret information in some other data (we call it a vessel) without leaving any apparent evidence of data alteration. All of the traditional steganographic techniques have limited information-hiding capacity. In this paper, we proposed a new method of the adaptive steganography using complexity on bit planes of color image. Applying fixing threshold and variable...
In this paper, we mathematically analyze the performance of four different relaying schemes in cellular systems. We assume a downlink cellular system with fixed relays and a mobile station is either directly connected to a base station and/or connected to a relay station. We consider four different downlink data relaying schemes: a direct scheme, a relay scheme, a selection scheme, and a cooperative...
The mobile mapping system using the vehicle equipped the GPS, IMU, CCD Camera is the effective system for the management of the road facilities, update of the digital map, and etc. If the geographic information which is acquired by the mobile mapping system can be transmitted in real-time, users can process what they want using latest data. We have developed a prototype image recognition system capable...
A flexible monopole antenna fabricated on PET film for UWB systems is proposed and the effects of the various kinds of the attached materials is analyzed. The proposed antenna has good performance over the entire UWB bandwidth, and it can be mounted on various kinds of conformal materials meeting the UWB bandwidth by using the stepped CPW feed line and the beveled ground plane. From the results, it...
This paper presents a technique to integrate energy efficient ubiquitous sensors to work in a network for optimum control. This optimization technique can reduce power consumption by using wireless communicating sensors with a supervisor control. This supervisory control of the sensors gives it an advantage of being controllable from any embedded, desktop or Internet platform. Sensors for different...
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