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Present electronic ballast with dimming controls all share one disadvantage, the stability of the lamps changes as the dimming level changes. Therefore, a dimming stabilization method using both frequency modulation and voltage modulation is proposed here to remedy the aforementioned shortcoming. This technology makes the dimming range of gas-discharge lamp wider and lets the lamp maintain a stable...
In this paper, a color-based recognition approach is proposed to recognize and track the trajectory of moving object and use this approach for the examining of sports fitness to construct an automatic examining system. The quantity for the specific movements will be measured and counted by this system to substitute for traditional method to eliminate the error due to subjective evaluation. This automatic...
The location of emergency call has been developed in embedded PXA310 platform by showing the location on the LCD screen through the technique of GPS, GSM and GIS. The friendly navigation interface is designed by using Microsoft Visual Studio program from the feedback GPS data. The formats of receiving GPS data are longitude, latitude and time etc. The best route (the shortest distance) algorithm...
A cost effective and user-friendly indoor air quality (IAQ) monitoring system based on ZigBee wireless sensor network implemented with the TI CC2430 ZigBee chip is described. In this proposed system, a temperature and relative humidity sensing module and a carbon dioxide sensing module were integrated in each ensor node which was placed in different indoor environment to monitor the IAQ parameters...
In this paper, a CMOS temperature sensor using cascaded PNP transistors was designed and measured. The commonly used band gap reference current source, which used bipolar junction transistors (BJTs) to implement output current components with negative and positive temperature coefficients, was adopted to generate a temperature-insensitive reference current source. The base-emitter voltage (VEB), i...
MECS, the multimedia environmental control system, is a Windows-based tool for connection management. It carries out as an application interface to a wireless network packet communication system, in which it is used to provide local and remote audio and video control, and to interact with the other RS232/infrared-oriented devices that support shared controlling processes. In this paper we document...
The purpose of the study is to design an embedded USB host/slave broadcasing system for computer assisted learning system (CALS).The embedded USB host/slave switching module(EUHSSM) is developed in the embedded USB host/slave broadcasting system,consisting with a USB host chip, a USB slave chip and the USB device driver are embedded to extend the usability-"one-to-multiple","one-to-one"...
We design a program for trajectory recognition and tracking processing on a moving limb, and use this program for the examining of sports fitness to construct an automatic examining system. The quantity for the specific movements will be measured and counted by this program running on the personal computer to substitute for traditional method to eliminate the error due to subjective evaluation. This...
In order to increase the engine power, economy and improve the pollution emissions, a new smart ignition system is proposed. Through a programmable and controllable ignition angle technique to improve the ignition efficiency for the DC capacitive discharge ignition (CDI) system. The 8-bit single chip microcomputer is implemented to read the crankshaft speed signal and camshaft baseline signal. The...
Bio-plasmonics is proposed for the research and development of novel devices, which use biomolecules as a part of the plasmon oscillation system to actively interact with nano/micro structure. We have reported a novel design of surface plasmon resonance (SPR) device and system, which uses alternative dielectric layers to enhance the SPR signal quality and modulate its resonant position. The use of...
In recent years, the embedded system has become a common goal sought by the academic world such as computer science, electronics, electrical engineering... etc or product developers. As we enter into the post-PC era, advances in electronics, information technology, and mobile computing provide the basis for the development of embedded systems and related products. This paper documents all relevant...
To effectively improve the efficiency of energy supply, quantification is required to determine its significance in our daily lives. Building an energy management system to monitor and acquire information such as energy supply and environmental factors is a necessary task for the quantification of energy consumption. We chose to build the energy management system with LonWorks control network because...
A new architecture for network on chip (NOC) called Mesh-Tree and its deterministic algorithm has been presented. In this paper, we present an adaptive deadlock-free router. A Mesh-Tree is a multilayered, 3D, pyramidal architecture. Each layer is a mesh and trees are used to connect adjacent layers. This architecture is good for broadcasting and high speed communications. The simulation results show...
A cycle stealing technique has been presented for avoiding the delays for instruction decompression when branching and cache missing occur. However, its cost is relatively high and it can't deal with exceptions. A new cycle-stealing technique is presented to reduce the cost and deal with exception handlings. The simulation results for several benchmarks show that the average benefit, the saving of...
This paper describes how we develop a digital life service system by integrating developed separately applications. A lot of Internet appliances are implemented and integrated to evaluate this integration platform. Users can control these appliances by a web browser. We integrated seamlessly these appliances as a whole on the web platform. A home gateway is used as the integration platform. A GPRS...
For instruction decompression, many techniques have been developed. However, when branching and cache missing occur, they may either incur delays to refill buffers or sacrifice the compression ratio or slow down the clock rate. This paper presents a new technique based on cycle-stealing technique to eliminate all these defects. The simulation results for several benchmarks show that the average compression...
A new architecture for network on chip (NOC) called mesh-tree and its corresponding deterministic deadlock-free router is presented in this paper. A mesh-tree is a multilayered, 3D, pyramidal topology. Each layer is a mesh and trees are used to connect adjacent layers. This architecture is good for broadcasting and high speed communications. The simulation results show that this architecture for NOC...
A real-time address tracer is a kernel of a dynamic debugging system for any embedded system such as the ARM7TDMI. In our previous version, we have provided an effective compression method, which usually uses only 8 to 32 entries (32 bits each entry) of table, a simple counter and low cost hardware instead of using 0.5k to 4k entries of dictionary and window based on LZW-based compression methods...
For instruction decompression, techniques such as single buffering, double buffering and pipelining have been proposed. However, due to jumping penalty, these techniques incur more delays in pipeline or system has to be stopped to refill the cache buffers. A Pipeline with Back-up for Flushing (PBF) technique has been developed that incurs no delay and without stopping due to jumping. However, the...
A real-time address tracer provides designers a realtime monitoring capability which is the kernel of a dynamic debugging system for any embedded system such as the ARM7TDMI. According to the localities of programs, in our previous version, we have provided an effective compression method, which usually uses only 8 to 32 entries (32 bits each entry) of table, a simple counter and low cost hardware...
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