A PC-based broadband digital seismograph network

Digital Television Transmission and Broadband Network Technologies

Digital television (DTV) network is medium that transports moving images, in the form of digital video signal and accompanying sound, in the form of digital audio signal, from one point to another. However, the system may include data and control signals and hence may be thought of as a multimedia system. Various network technologies find use in the digital television production and transmissio...

B-ISDN (Broadband Integrated Services Digital Network)

The subject of B-ISDN came into being in the late 1980s, together with the concept of Asynchronous Transfer Mode (ATM). ATM is closely tied to high-speed packet switching by means of specialized switches implemented in hardware. Due to its high speed and packet structure, ATM technology was considered attractive to unify voice, data, and video services. A unification of these services over the ...

The Earss Digital Seismograph : System Description and Field Trials

An earthquake detection and recording system known as EARSS has been developed for permanent seismograph stations and temporary field installations. It records three components of ground motion with a dynamic range of 120 dB. A frequency-domain algorithm detects earthquakes and initiates the recording of data on magnetic tape. Alternatively, EARSS can record data continuously, for preselected p...

Automatic classification of seismic events within a regional seismograph network

Implementing Wireless Broadband Digital Network for the Railway Information System

Broadband Railway Digital Network (BRDN) integrating the emerging broadband wireless access technologies will satisfy the requirements of next generation Railway Information System (RIS). This paper proposes an overall implementation scheme for BRDN with discussion on its main components, such as the intranet on train, train-ground internetworking and infrastructure of BRDN. The paper aims at e...