dth recharge management system using vb 6 0
#1

I want a vb project based on dth shop management system invluding complete ffd ,tables,codes etc....
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#2
please visit dth recharge management system using vb 6 0

DTH System

1. BITS Pilani Hyderabad Campus Mayank Garg 2013H140040H Embedded System BITS-Pilani, Hyderabad Campus “DTH”
2. BITS Pilani, Hyderabad Campus  Introduction  History  Constituents of DTH  Basic principle of DTH  Basic Block diagram & its Operation  Cable TV Vs DTH TV  Features of DTH  DTH service providers Mayank Garg Slide 2 CONTENTS
3. BITS Pilani, Hyderabad Campus • The term DTH stands for ‘Direct To Home’. • DTH television is a wireless system for delivering television programs directly to the viewer’s house. • ‡Defined as the reception of satellite programs with a personal dish in an individual home. • ‡DTH symbols the Transmission of digital video channel to home subscribers through small dish antenna. INTRODUCTION Mayank Garg Slide 3
4. BITS Pilani, Hyderabad CampusMayank Garg Slide 4
5. BITS Pilani, Hyderabad Campus Minidish antenna LNBF Coaxial cable Connector Set top box Mayank Garg Slide 5 A DTH consists of:
6. BITS Pilani, Hyderabad Campus • LNBF is the part of a satellite antenna which is positioned in front of the dish to receive the signal and converts the signal to be carried by cable to the receiver . • Low noise block down converter is the antenna of what is commonly called the parabolic satellite dish commonly used in satellite TV reception. Mayank Garg Slide 6 LNBF
7. BITS Pilani, Hyderabad CampusMayank Garg Slide 7 SET-TOP BOX
8. BITS Pilani, Hyderabad CampusMayank Garg Slide 8 • In DTH television , the broadcast signals are transmitted from satellites orbiting the Earth to the viewer’s house. • Each satellite is located approximately 35,700km above the Earth in geosynchronous orbit. • These satellites receive the signals from the broadcast stations located on Earth and rebroadcast them to the Earth. • The viewer’s dish picks up the signal from the satellite and passes it on to the receiver located inside the viewer’s house. • The receiver processes the signal and passes it on to the television. • The DTH television is used in millions of homes across United States ,Europe and South East Asia. BASIC PRINCIPLE
9. BITS Pilani, Hyderabad CampusMayank Garg Slide 9
10. BITS Pilani, Hyderabad CampusMayank Garg Slide 10
11. BITS Pilani, Hyderabad CampusMayank Garg Slide 11 OPERATION • The block diagram of DTH TV system can be divided into two sections:  Outdoor Unit  Indoor Unit • OUTDOOR UNIT • The outdoor unit consist of : 1) The parabolic satellite antenna 2) Low noise amplifier(LNA) 3) Converter
12. BITS Pilani, Hyderabad CampusMayank Garg Slide 12 Outdoor unit cont.. • The receiver antenna is a parabolic reflector horn antenna which is directed directly to the satellite to receive the signal. • The received signal from satellite by the antenna is applied to the low noise amplifier(LNA) which is a wide band amplifier. • LNA amplifies all the frequencies received from the ant
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#3
A direct-broadcast satellite (DBS) is a type of artificial satellite which usually broadcasts satellite television signals for home reception.[1]

The type of satellite television which uses direct-broadcast satellites is known as direct-broadcast satellite television (DBSTV) or direct-to-home television (DTHTV).[2] The term "direct broadcast" is used to distinguish satellites which transmit radio or television signals directly to receivers in consumers' homes from other communications satellites which transmit signals to satellite ground stations, for example those which distribute cable television signals to cable head end facilities. Since home satellite television receivers use small dish antennas less than a meter in diameter, DBS satellites must have much higher downlink transmitter power than other communication satellites, which are received by larger dishes from 2 up to 50 meters diameter.
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