We have created an experimental prototype that enhances an ordinary personal media player by adding digital library capabilities. It does not enable access to a remote digital library from a user’s PDA; rather, it runs a complete, standard digital library server environment on the device. Being optimized for multimedia information, this platform has truly vast storage capacity. It raises the po...

In this paper we propose a complete solution of authentication and key exchange for digital home environments such that mobile devices can securely access the home devices. Some digital home authentication and key exchange protocols performed between mobile devices and home gateways are assisted by the AAA servers, which are provided by telecommunication companies, but they have some security f...

This article describes a mobile interpretation of the PKI architecture used in document digital signature. The architecture relies on a three-way client-server model which communicates via a combination of Bluetooth and Wireless LAN channels. The idea of implementing such a system using an Android device as the signee is an alternative to the more traditional approach which uses desktop applica...

Digital painting is becoming increasingly popular. While the interaction design of most digital painting software or device is confined to square screens, which limit the experience of painting. Colode is a digital painting system that reallocates the interactions of painting in a tangible approach. User can pick color from nature and use the color to draw on mobile devices anywhere. By integra...

The market for digital cameras has exploded over the last few years. Including cameras fitted in devices such as mobile phones, digital cameras have become the fastest selling consumer electronic device in history. This growth in digital sales has been matched by a decline in the sales of traditional analogue cameras to the extent where Kodak has announced its decision to stop selling these pro...

In this paper, we present a framework for digital forensics that includes an investigation process model based on physical crime scene procedures. In this model, each digital device is considered a digital crime scene, which is included in the physical crime scene where it is located. The investigation includes the preservation of the system, the search for digital evidence, and the reconstruct...

This study developed a device measuring the X-ray source-detector angle (SDA) and evaluated the imaging performance for diagnosing chest images. The SDA device consisted of Arduino, an accelerometer and gyro sensor, and a Bluetooth module. The SDA values were compared with the values of a digital angle meter. The performance of the portable digital radiography (PDR) was evaluated using the sign...

UNLABELLED Over recent years there has been increasing usage of digital systems within cardiothoracic surgery to quantify air leaks and aid in clinical decision-making regarding the removal of chest drains postoperatively. The literature suggests improved agreement on timing of removal of chest drains and a reduced length of stay of patients. It could be that such devices could be useful tools ...

To capture a still photograph, digital cameras have to employ a technology converting incoming photons into digital signals. The image sensor used for this is most often a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) chip, however regardless of the technology, the effect is the same: light strikes an array of photosensors, where energy proportional to that of ...

The coordinate rotation digital computer (CORDIC) algorithm is well known iterative algorithm for performing rotations in digital signal processing applications. Hardware implementation of CORDIC results increase in Critical path delay. Pipelined architecture is used in CORDIC to increase the clock speed and to reduce the Critical path delay. In this paper a hardware efficient Digital sine and ...