Documente publicate de Axinte Cojocariu
Axinte Cojocariu
7 documente publicate în Biblioteca RegieLive
Broadcasting and Television
BALEIAJUL VERTICAL Etapele de baleiaj vertical trebuie să asigure prin bobine de diferite verticale un curent liniar variabil pe durata cursei directe şi o întoarcere rapidă a fascicolului de electroni în timpul cursei inverse pe verticală. Ţinând cont de particularităţile baleiajului vertical (frecvenţa fv=50Hz,... citește mai departe
The Programming and the Control of the Complex Works Execution
The programming and the control of the complex works execution 2.1. General presentation The co-ordination, one of the conducting attributes, is responsible with the correlation of different activities that are carried out in organisations. The co-ordination of both basic production -production programming- and... citește mai departe
MPEG 4 - Multimedia for Our Time
The standard MPEG-4, developed over five years by the Moving Picture Experts Group (MPEG) OF THE Geneva – based International Organization for Standardization (ISO), explores every possibility of the digital environment. The greatest of the advances made by MPEG-4 is that viewers and listeners need no longer be... citește mai departe
Wireless Infidelity I - War Driving
General aspects: The concept of wireless networking dates back at least as far as ALOHANET in 1970. ALOHAnet, also known as ALOHA, was a pioneering computer networking system developed at the University of Hawaii. It was first deployed in 1970, and while the network itself is no longer used, one of the core... citește mai departe
DVD functional principle
1. INTRODUCTION DVD (also known as "Digital Versatile Disc" or "Digital Video Disc") is a popular optical disc storage media format. Its main uses are video and data storage. Most DVDs are of the same dimensions as compact discs (CDs) but store more than six times as much data. Variations of the term DVD often... citește mai departe
Multiplexed Transmission Systems
Chapter 1 MULTIPLE ACCESS TECHNIQUES 1.1. THE MAIN ACCESSING TECHNIQUES USED IN MOBILE COMMUNICATIONS: PERFORMANCE AND CHARACTERISTICS 1.1.1. Duplex transmissions Duplex transmission – communication between BS and MS • The link between the base and the mobile station is called downlink in European terminology... citește mai departe
High Frequencies and Microwaves
1. Introduction 1.1. Propagation of electromagnetic waves in uniform waveguides In a hollow metallic waveguide, electromagnetic field can propagate through some different structures named modes of propagation. The study of these modes involves a specific parameter named the cutoff frequency of the mode, . The... citește mai departe